The following tables present IEM computed monthly data summaries based on
daily data provided by or computed for the IEM. A download interface
exists for the daily summary information. The climatology is provided by the
nearest NCEI climate station () within the current 1991-2020
dataset.
To load shown data into Microsoft Excel,
highlight the table information with your mouse and then copy/paste into Excel.
Precipitation Totals [inch]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1974
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1975
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1976
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1977
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1978
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1979
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1980
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1981
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1982
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1983
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1984
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1985
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1986
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1987
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1988
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1989
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1990
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1991
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1992
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1993
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1994
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1995
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1996
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1997
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1998
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1999
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2001
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.47
0.00
0.00
2002
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
8.07
0.00
0.00
0.00
2003
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2004
M
M
M
M
M
M
M
M
M
M
M
M
2005
M
M
M
M
M
M
M
M
M
M
M
M
2006
M
M
M
M
M
M
M
M
M
M
M
M
2007
M
0.00
M
M
M
M
M
M
M
M
M
M
2008
M
M
M
M
M
M
M
M
M
M
M
M
2009
M
M
M
M
M
M
M
M
M
M
M
M
2010
M
M
M
M
M
M
M
M
M
M
M
M
2011
M
M
M
M
M
M
M
0.00
0.00
0.00
0.00
0.00
2012
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2013
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
M
M
M
2014
M
M
M
M
M
M
M
M
M
M
M
M
2015
M
M
M
M
M
M
M
M
M
M
M
M
2016
M
M
M
M
M
0.00
0.00
M
M
M
M
M
2017
M
M
M
M
M
M
0.00
M
M
M
M
M
2018
M
M
M
M
M
M
M
M
M
M
M
M
2019
M
M
M
M
M
M
M
M
M
M
M
M
2020
M
M
M
M
M
M
M
M
M
M
M
M
2021
M
M
M
M
M
M
M
M
M
M
M
M
2022
M
M
M
M
M
M
M
M
M
M
M
M
2023
M
M
M
M
M
M
M
M
M
M
M
M
2024
M
M
M
M
M
M
M
M
M
M
M
M
Average Wind Speed [MPH]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
9.4
9.2
9.5
9.0
9.7
8.4
9.5
8.2
6.2
7.4
8.0
7.8
1974
8.9
8.4
10.2
10.5
7.9
9.1
8.3
8.1
6.5
6.4
6.5
7.7
1975
9.4
10.4
10.4
10.5
8.8
10.3
9.3
7.3
7.2
5.9
6.6
6.0
1976
8.3
7.5
7.8
5.3
6.5
6.4
5.3
5.1
4.2
3.2
4.3
4.9
1977
5.5
5.7
7.2
7.2
5.8
6.4
5.5
5.4
4.6
4.2
3.8
5.3
1978
5.2
5.8
5.3
4.3
5.1
5.1
5.2
3.9
4.0
3.8
4.3
4.6
1979
4.4
6.3
5.9
5.6
5.1
4.1
4.3
5.0
4.0
4.0
3.5
3.9
1980
4.7
5.4
5.9
5.8
5.4
5.9
5.5
4.9
4.6
4.2
5.1
3.9
1981
4.5
5.2
4.5
3.9
3.4
3.8
3.6
3.7
3.1
3.4
3.6
4.2
1982
2.7
2.6
2.7
2.6
3.0
4.2
4.4
4.3
5.6
8.2
7.9
8.6
1983
4.4
4.7
4.9
5.1
3.7
4.5
4.2
4.3
4.1
3.5
3.7
3.6
1984
4.0
4.6
4.7
4.1
4.7
4.5
3.6
3.2
3.2
3.2
3.1
3.6
1985
3.5
4.4
4.9
4.0
4.2
3.9
3.3
3.1
3.0
3.1
2.4
3.2
1986
3.5
3.7
4.2
3.4
3.2
3.6
3.6
3.6
2.9
2.6
2.3
2.8
1987
3.0
3.5
3.3
3.7
3.0
3.0
3.1
2.9
2.9
2.5
2.5
2.8
1988
2.7
3.5
3.7
2.8
3.4
3.0
2.8
2.6
2.5
2.3
2.1
2.2
1989
2.8
2.7
3.1
3.0
3.0
3.0
2.6
2.7
2.5
2.4
2.4
2.6
1990
3.2
2.4
2.7
2.5
2.5
2.9
3.0
2.6
2.8
2.3
2.4
2.6
1991
3.3
2.8
3.1
3.4
3.6
3.3
3.3
3.2
2.9
2.7
2.5
2.9
1992
2.9
3.4
3.1
3.1
3.3
3.1
2.8
3.1
2.8
2.5
2.2
2.5
1993
3.0
3.0
3.3
3.4
2.9
2.9
2.6
2.6
2.7
2.8
2.6
2.8
1994
3.0
2.8
3.3
3.2
3.2
3.3
2.7
3.0
2.9
2.8
2.8
2.6
1995
2.9
3.3
3.0
3.3
3.2
3.0
3.1
2.8
2.9
2.6
2.6
2.5
1996
2.8
2.9
3.0
3.1
2.6
2.5
2.3
2.5
2.4
2.0
2.0
1.9
1997
2.0
2.8
2.6
3.0
2.8
3.0
2.7
2.7
2.4
2.4
2.1
2.3
1998
2.5
2.6
2.7
2.7
2.8
2.8
2.6
2.6
2.5
2.4
2.1
2.1
1999
2.3
2.3
2.6
2.7
2.7
2.6
2.4
2.4
2.4
2.2
2.6
1.8
2000
2.0
2.1
2.2
2.5
2.4
2.5
2.3
2.4
2.7
2.3
1.9
2.3
2001
2.1
2.0
2.2
2.6
3.1
3.4
3.4
3.0
2.8
3.0
2.5
2.4
2002
2.6
2.3
2.4
2.5
2.8
2.6
2.4
2.5
2.7
2.6
1.8
1.9
2003
1.9
2.1
2.3
2.3
2.5
2.2
2.0
2.1
2.2
2.0
1.6
1.9
2004
1.9
2.3
2.5
2.2
2.1
1.7
1.7
1.5
2.1
1.3
1.9
1.6
2005
1.9
1.9
1.9
2.3
2.1
2.5
2.6
2.7
2.3
2.3
1.8
1.5
2006
2.0
3.7
3.7
2.9
2.8
3.4
3.0
2.8
2.4
2.0
1.7
1.7
2007
1.9
2.2
2.0
2.6
2.9
2.8
2.5
2.7
2.9
2.5
2.6
2.4
2008
2.3
3.0
3.0
3.5
2.9
2.9
2.8
2.7
2.9
2.1
2.1
2.2
2009
M
M
M
M
M
M
M
M
M
M
M
M
2010
M
M
M
M
M
M
M
M
M
M
M
M
2011
M
M
M
M
M
M
2.8
1.9
2.1
2.2
1.5
1.5
2012
1.6
2.0
1.8
2.1
1.9
2.1
2.1
1.8
2.4
2.3
1.6
1.8
2013
1.7
2.1
2.7
2.0
2.2
3.8
4.5
2.1
2.2
2.1
1.8
1.8
2014
2.1
2.2
2.5
2.5
3.8
2.3
2.3
2.5
3.0
2.0
2.5
3.4
2015
2.4
2.7
4.0
3.1
3.3
3.9
2.7
2.7
2.6
2.3
2.2
2.2
2016
1.1
2.3
2.6
2.2
2.3
2.4
2.4
2.3
2.5
2.7
1.7
2.3
2017
2.4
2.7
3.0
2.3
2.9
2.6
2.8
2.8
7.5
1.9
2.3
5.5
2018
5.7
4.0
4.3
3.6
3.8
3.8
3.8
4.9
1.5
1.5
3.4
3.7
2019
2.9
3.5
4.2
5.2
3.6
3.7
3.6
3.6
4.3
3.7
4.5
4.8
2020
4.4
5.2
6.1
5.6
4.7
4.7
6.0
4.5
5.1
4.6
7.0
4.1
2021
5.0
3.1
3.7
5.1
4.0
10.5
4.0
4.2
5.8
5.1
4.3
6.0
2022
3.9
7.1
5.5
5.1
4.2
4.2
4.4
4.3
4.2
3.9
2.9
3.2
2023
4.4
4.2
5.5
4.3
6.4
5.8
7.1
4.1
3.6
3.8
4.7
3.9
2024
4.0
3.8
3.9
4.1
4.1
6.8
5.5
4.1
4.1
3.6
6.0
4.6
Average Daily High Temperature [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
84.39
83.50
82.52
83.37
84.39
84.53
84.19
86.40
87.07
86.90
82.17
80.45
1974
79.29
80.30
80.87
80.18
82.68
82.63
82.90
83.81
87.37
86.32
85.93
82.61
1975
81.88
80.82
82.19
81.93
83.70
84.40
84.06
86.13
87.03
86.06
85.63
82.10
1976
80.61
81.69
80.77
82.77
83.61
83.10
83.90
86.77
86.33
86.71
86.00
83.77
1977
83.74
82.00
81.94
84.00
87.35
83.40
85.45
86.70
87.30
87.10
87.27
83.94
1978
83.48
84.29
84.55
85.07
86.19
85.77
85.23
87.06
88.10
88.03
87.57
84.34
1979
84.00
84.93
84.63
84.60
86.97
86.93
86.71
86.70
88.60
88.90
90.03
86.94
1980
84.71
83.62
83.29
85.77
87.68
88.00
87.58
87.62
87.83
86.90
86.00
84.77
1981
84.81
83.48
84.17
83.10
87.42
85.80
87.23
87.74
88.50
89.61
87.60
86.23
1982
82.35
81.79
81.77
82.47
85.23
85.10
83.81
86.03
88.53
86.45
85.50
83.03
1983
83.19
83.25
85.65
86.33
86.23
89.20
88.97
89.16
89.63
87.61
86.63
84.39
1984
84.06
83.38
82.84
84.03
84.52
84.93
84.03
85.29
86.17
86.84
85.33
83.13
1985
82.68
82.25
82.71
83.63
85.77
84.60
85.23
85.84
86.67
85.61
86.57
83.74
1986
82.65
83.29
84.32
85.83
86.97
87.93
88.16
88.48
88.40
88.55
87.43
85.39
1987
83.71
84.00
84.68
86.17
87.35
88.07
86.10
89.52
90.93
90.45
89.40
88.81
1988
84.81
84.21
84.77
86.63
88.42
89.37
88.90
89.06
90.13
89.13
87.57
83.97
1989
81.45
82.17
84.00
84.70
84.55
85.57
88.03
90.29
90.30
89.06
87.90
86.03
1990
82.94
82.61
83.23
85.27
86.65
88.97
88.32
89.26
91.53
90.71
90.43
87.58
1991
85.61
83.82
84.23
85.50
87.29
87.13
87.06
89.06
89.23
89.77
87.50
83.52
1992
84.28
84.69
85.06
86.93
89.45
89.67
90.00
91.77
91.43
91.90
89.67
87.71
1993
86.58
86.32
86.74
88.37
90.16
88.97
88.10
88.29
88.77
88.39
85.50
83.71
1994
82.00
80.71
82.58
85.50
86.39
85.83
84.13
86.45
88.47
88.81
88.50
85.94
1995
85.32
83.64
83.61
84.47
86.03
83.93
81.87
82.68
85.53
88.77
88.66
87.39
1996
85.84
85.79
85.74
86.63
85.84
87.07
87.39
88.55
89.77
89.16
87.03
85.13
1997
85.03
82.68
82.90
85.93
88.13
87.80
88.26
88.13
90.03
90.55
88.70
87.65
1998
86.29
86.64
85.45
87.23
90.03
89.27
87.81
89.39
88.80
86.94
86.80
87.29
1999
83.71
82.14
84.39
83.60
86.77
86.47
86.39
89.06
89.73
89.03
88.83
83.58
2000
83.06
82.66
83.84
85.03
87.45
87.03
87.77
90.68
89.30
90.47
86.93
85.80
2001
85.64
84.32
85.94
87.67
89.42
88.50
90.92
92.97
92.43
91.03
89.61
87.61
2002
86.45
85.32
85.52
87.83
87.52
89.50
89.23
92.10
92.67
91.52
90.13
88.35
2003
89.00
87.90
89.16
89.63
88.63
89.48
88.85
89.94
90.91
91.74
90.15
87.92
2004
M
M
M
M
M
M
M
M
M
M
M
M
2005
M
M
M
M
M
M
M
M
M
M
M
M
2006
M
M
M
M
M
M
M
M
M
M
M
M
2007
M
83.03
M
M
M
M
M
M
M
M
M
M
2008
M
M
M
M
M
M
M
M
M
M
M
M
2009
M
77.00
M
87.80
M
M
M
M
M
M
78.80
M
2010
75.20
M
M
M
87.80
M
M
91.28
90.44
91.34
86.72
87.05
2011
84.45
81.29
80.77
82.46
82.70
85.23
85.03
85.85
89.90
88.61
88.70
85.48
2012
84.14
84.63
84.43
87.50
89.25
89.00
89.77
90.12
93.26
91.28
90.14
86.99
2013
84.90
85.55
85.59
86.12
87.63
89.24
89.43
89.66
91.40
90.70
87.38
86.58
2014
85.07
85.87
87.22
86.66
86.64
87.98
87.22
89.02
89.36
88.73
88.28
86.87
2015
88.32
90.05
88.03
88.34
87.74
87.80
87.63
88.55
89.85
89.54
87.68
87.28
2016
85.71
85.69
87.39
87.32
89.25
89.36
88.55
88.32
89.18
89.43
85.02
88.03
2017
83.51
87.03
87.05
87.92
88.44
88.22
89.83
90.18
90.26
89.83
87.44
87.10
2018
86.23
84.65
84.90
86.30
87.10
86.55
87.37
86.81
87.38
87.16
86.66
85.83
2019
84.72
82.67
81.80
82.52
83.33
83.73
86.58
88.55
87.50
87.86
87.86
87.80
2020
87.39
87.86
87.68
87.68
87.74
88.04
89.02
89.37
90.62
90.59
88.28
86.70
2021
85.77
86.19
86.52
87.44
87.63
87.08
88.61
89.14
89.48
89.89
88.58
88.32
2022
89.31
88.64
87.74
88.64
89.54
87.56
88.67
88.90
89.18
89.08
88.58
88.90
2023
89.95
89.60
89.83
90.44
92.56
93.74
93.03
92.79
94.40
92.45
93.02
91.92
2024
93.90
88.98
91.57
89.96
89.60
90.50
91.92
91.69
92.18
91.52
89.66
89.42
Average Daily Low Temperature [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
73.23
72.61
73.10
73.77
74.39
74.87
74.52
76.00
75.53
76.10
73.17
70.81
1974
70.00
70.78
71.45
72.07
73.81
73.83
73.39
74.26
75.53
74.19
74.80
71.84
1975
71.27
71.39
72.19
72.27
73.83
75.60
74.10
75.13
75.87
75.26
74.03
72.16
1976
70.42
71.59
71.65
73.60
75.32
75.07
74.58
76.58
76.87
77.52
75.53
73.03
1977
72.45
72.14
71.84
72.90
76.58
75.33
75.10
76.33
77.13
76.48
76.73
72.65
1978
71.87
72.54
73.35
76.20
76.81
76.27
75.26
76.61
77.60
77.71
76.57
73.28
1979
72.42
73.93
74.60
75.53
77.13
77.20
75.45
75.63
77.93
78.58
80.48
78.23
1980
75.00
73.52
73.29
75.90
79.10
79.66
78.32
78.97
78.03
77.06
74.63
73.90
1981
74.13
74.41
74.53
75.30
77.19
75.37
75.19
74.94
74.90
77.90
77.93
75.32
1982
73.45
73.57
73.35
75.03
76.55
75.60
75.45
76.84
77.70
76.58
75.90
74.97
1983
73.61
73.32
75.45
76.30
78.19
80.50
79.58
79.68
79.70
76.29
75.17
73.52
1984
72.06
72.00
71.94
73.50
74.06
75.33
73.26
74.45
74.83
74.55
74.67
72.39
1985
70.42
70.82
72.52
72.90
75.19
74.70
73.26
73.35
74.37
74.58
74.63
72.26
1986
71.23
71.25
72.32
74.63
75.58
76.87
76.06
76.48
76.23
76.58
75.53
73.16
1987
71.13
72.68
73.77
75.47
76.94
77.27
75.29
77.06
78.43
77.61
76.60
75.65
1988
72.06
72.10
72.10
74.60
76.35
76.60
76.00
76.32
76.20
75.48
75.03
72.13
1989
69.52
70.38
71.74
73.03
73.61
74.07
74.77
76.16
76.60
75.84
75.33
72.74
1990
72.26
71.57
72.39
74.80
75.35
76.37
75.77
75.45
77.07
77.43
76.40
73.71
1991
72.71
70.93
72.81
73.63
75.71
75.37
74.65
76.06
75.63
76.03
74.13
71.90
1992
71.31
72.24
72.52
75.38
76.74
77.00
76.61
77.45
78.07
77.77
74.83
73.74
1993
72.58
72.43
73.06
75.73
77.74
76.43
74.97
74.94
75.23
74.23
72.13
69.23
1994
67.90
67.00
69.55
72.50
73.81
73.37
72.39
73.00
75.07
75.26
75.03
72.35
1995
71.32
69.64
71.35
72.43
73.23
72.10
68.84
69.39
72.33
76.10
75.45
74.19
1996
72.32
73.24
72.84
73.97
75.23
75.50
74.87
76.03
77.57
76.61
75.43
73.61
1997
71.90
72.04
70.94
73.97
76.03
76.23
75.61
75.97
76.40
77.55
75.40
72.68
1998
72.90
74.07
73.55
76.20
78.10
77.33
75.42
76.39
75.50
74.87
73.50
74.03
1999
70.68
69.54
71.61
72.23
73.45
73.20
73.45
75.35
76.13
75.06
75.63
73.63
2000
71.84
71.45
72.52
73.07
75.71
75.20
75.74
77.42
77.40
78.40
74.97
74.63
2001
73.50
72.96
73.81
76.67
80.23
78.53
79.93
79.77
79.03
77.94
76.36
75.77
2002
73.03
72.48
73.87
75.43
77.03
77.30
76.97
78.87
79.60
79.39
77.70
75.74
2003
74.81
74.83
75.45
76.59
77.23
76.59
76.91
77.61
77.33
78.01
77.14
75.30
2004
M
M
M
M
M
M
M
M
M
M
M
M
2005
M
M
M
M
M
M
M
M
M
M
M
M
2006
M
M
M
M
M
M
M
M
M
M
M
M
2007
M
74.80
M
M
M
M
M
M
M
M
M
M
2008
M
M
M
M
M
M
M
M
M
M
M
M
2009
M
77.00
M
87.80
M
M
M
M
M
M
78.80
M
2010
75.20
M
M
M
87.80
M
M
79.11
77.36
78.68
76.82
75.20
2011
73.09
74.37
73.63
76.42
78.27
80.00
78.66
80.00
77.42
74.91
76.10
72.99
2012
72.47
72.16
74.21
76.22
77.75
76.88
77.35
76.30
78.44
77.75
77.90
74.97
2013
72.76
72.76
72.82
74.18
75.66
77.06
76.77
78.22
77.66
76.71
75.56
74.39
2014
72.76
72.44
75.14
73.16
75.55
77.30
75.95
77.06
77.42
76.94
77.12
74.79
2015
76.42
76.74
75.32
75.62
76.77
75.32
76.48
76.71
77.31
77.46
76.58
75.49
2016
73.28
73.77
75.08
75.98
77.17
79.22
77.70
76.25
77.36
79.66
81.09
78.51
2017
78.80
76.23
77.46
79.82
80.54
79.76
81.18
78.97
78.08
77.64
76.10
74.56
2018
72.76
72.76
73.05
73.22
75.14
75.82
75.32
76.25
76.04
75.84
75.32
74.79
2019
73.34
73.40
73.70
73.58
74.39
75.93
75.26
76.77
76.64
76.19
75.80
75.26
2020
73.98
45.84
74.97
75.56
75.20
71.48
71.95
75.43
74.66
75.95
75.14
74.74
2021
73.46
73.53
72.99
70.88
73.52
74.00
73.69
73.57
73.88
72.76
74.00
71.77
2022
73.34
72.89
72.65
71.36
73.11
72.50
72.99
74.56
75.20
72.53
74.42
74.15
2023
74.45
74.24
72.59
73.64
73.57
73.34
74.27
75.14
76.04
74.74
75.32
71.89
2024
72.53
72.34
73.63
74.12
76.65
74.72
75.32
75.49
73.40
76.19
75.68
73.67
Average Daily Temperature (high+low)/2 [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
78.81
78.05
77.81
78.57
79.39
79.70
79.35
81.20
81.30
81.50
77.67
75.63
1974
74.65
75.54
76.16
76.12
78.24
78.23
78.15
79.03
81.45
80.26
80.37
77.23
1975
76.58
76.11
77.19
77.10
78.77
80.00
79.08
80.63
81.45
80.66
79.83
77.13
1976
75.52
76.64
76.21
78.18
79.47
79.08
79.24
81.68
81.60
82.11
80.77
78.40
1977
78.10
77.07
76.89
78.45
81.97
79.37
80.27
81.52
82.22
81.79
82.00
78.29
1978
77.68
78.41
78.95
80.63
81.50
81.02
80.24
81.84
82.85
82.87
82.07
78.81
1979
78.21
79.43
79.62
80.07
82.05
82.07
81.08
81.17
83.27
83.74
85.26
82.58
1980
79.85
78.57
78.29
80.83
83.39
83.83
82.95
83.29
82.93
81.98
80.32
79.34
1981
79.47
78.94
79.35
79.20
82.31
80.58
81.21
81.34
81.70
83.76
82.77
80.77
1982
77.90
77.68
77.56
78.75
80.89
80.35
79.63
81.44
83.12
81.52
80.70
79.00
1983
78.40
78.29
80.55
81.32
82.21
84.85
84.27
84.42
84.67
81.95
80.90
78.95
1984
78.06
77.69
77.39
78.77
79.29
80.13
78.65
79.87
80.50
80.69
80.00
77.76
1985
76.55
76.54
77.61
78.27
80.48
79.65
79.24
79.60
80.52
80.10
80.60
78.00
1986
76.94
77.27
78.32
80.23
81.27
82.40
82.11
82.48
82.32
82.56
81.48
79.27
1987
77.42
78.34
79.23
80.82
82.15
82.67
80.69
83.29
84.68
84.03
83.00
82.23
1988
78.44
78.16
78.44
80.62
82.39
82.98
82.45
82.69
83.17
82.31
81.30
78.05
1989
75.48
76.27
77.87
78.87
79.08
79.82
81.40
83.23
83.45
82.45
81.62
79.39
1990
77.60
77.09
77.81
80.03
81.00
82.67
82.05
82.35
84.30
84.07
83.42
80.65
1991
79.16
77.38
78.52
79.57
81.50
81.25
80.85
82.56
82.43
82.90
80.82
77.71
1992
77.79
78.47
78.79
81.16
83.10
83.33
83.31
84.61
84.75
84.84
82.25
80.73
1993
79.58
79.38
79.90
82.05
83.95
82.70
81.53
81.61
82.00
81.31
78.82
76.47
1994
74.95
73.86
76.06
79.00
80.10
79.60
78.26
79.73
81.77
82.03
81.77
79.15
1995
78.32
76.64
77.48
78.45
79.63
78.02
75.35
76.03
78.93
82.44
82.05
80.79
1996
79.08
79.52
79.29
80.30
80.53
81.28
81.13
82.29
83.67
82.89
81.23
79.37
1997
78.47
77.36
76.92
79.95
82.08
82.02
81.94
82.05
83.22
84.05
82.05
80.16
1998
79.60
80.36
79.50
81.72
84.06
83.30
81.61
82.89
82.15
80.90
80.15
80.66
1999
77.19
75.84
78.00
77.92
80.11
79.83
79.92
82.21
82.93
82.05
82.23
78.61
2000
77.45
77.05
78.18
79.05
81.58
81.12
81.76
84.05
83.35
84.43
80.95
80.22
2001
79.57
78.64
79.87
82.17
84.82
83.52
85.42
86.37
85.73
84.48
82.99
81.69
2002
79.74
78.90
79.69
81.63
82.27
83.40
83.10
85.48
86.13
85.45
83.92
82.04
2003
81.91
81.36
82.31
83.11
82.93
83.03
82.88
83.77
84.12
84.88
83.64
81.61
2004
M
M
M
M
M
M
M
M
M
M
M
M
2005
M
M
M
M
M
M
M
M
M
M
M
M
2006
M
M
M
M
M
M
M
M
M
M
M
M
2007
M
78.91
M
M
M
M
M
M
M
M
M
M
2008
M
M
M
M
M
M
M
M
M
M
M
M
2009
M
77.00
M
87.80
M
M
M
M
M
M
78.80
M
2010
75.20
M
M
M
87.80
M
M
85.19
83.90
85.01
81.77
81.12
2011
78.77
77.83
77.20
79.44
80.49
82.61
81.85
82.92
83.66
81.76
82.40
79.24
2012
78.31
78.40
79.32
81.86
83.50
82.94
83.56
83.21
85.85
84.52
84.02
80.98
2013
78.83
79.15
79.21
80.15
81.65
83.15
83.10
83.94
84.53
83.71
81.47
80.48
2014
78.92
79.15
81.18
79.91
81.09
82.64
81.59
83.04
83.39
82.84
82.70
80.83
2015
82.37
83.40
81.67
81.98
82.25
81.56
82.05
82.63
83.58
83.50
82.13
81.38
2016
79.50
79.73
81.24
81.65
83.21
84.29
83.13
82.28
83.27
84.54
83.05
83.27
2017
81.15
81.63
82.25
83.87
84.49
83.99
85.51
84.58
84.17
83.74
81.77
80.83
2018
79.50
78.70
78.97
79.76
81.12
81.19
81.34
81.53
81.71
81.50
80.99
80.31
2019
79.03
78.03
77.75
78.05
78.86
79.83
80.92
82.66
82.07
82.02
81.83
81.53
2020
80.69
66.85
81.33
81.62
81.47
79.76
80.48
82.40
82.64
83.27
81.71
80.72
2021
79.61
79.86
79.76
79.16
80.57
80.54
81.15
81.35
81.68
81.33
81.29
80.05
2022
81.33
80.76
80.19
80.00
81.33
80.03
80.83
81.73
82.19
80.80
81.50
81.53
2023
82.20
81.92
81.21
82.04
83.07
83.54
83.65
83.97
85.22
83.59
84.17
81.91
2024
83.21
80.66
82.60
82.04
83.13
82.61
83.62
83.59
82.79
83.85
82.67
81.55
Average Relative Humidity [%]
This value is computed via a simple average of available observations weighted
by the duration between observations.
