The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Climatology Pull
Posted: 27 Mar 2025 05:30 AM, Views: 645
Yesterday's daily feature looked into the warming of soils during late March. Today's featured map looks into the warming of air temperatures by plotting the change in NCEI 1991-2020 climatology over the coming seven day period. Much of Iowa is shown in the 3-4 degree range meaning that average high temperatures on 3 April are that much warmer than average values on 27 March. Such is the strong pull of climatology this time of year as soil temperatures continue to warm, solar inputs increase daily, and frequency of snow cover decreases. The pattern shown over the contiguous US is certainly interesting with the weakest amount of warming found along the Pacific coast, which is heavily modulated by the ocean. You can also see some effect over Michigan as the chillier Great Lakes dampen the warming this time of year as well.
Previous Years' Features
CoCoRaHS Update
Posted: 29 Jan 10:29 AM
13-16 Jan Network Issue [resolved]
Posted: 15 Jan 10:13 AM
Alaska Marine Warnings
Posted: 8 Jan 9:28 AM
Wagering on ASOS Temperatures
Posted: 4 Dec 10:39 AM
25 Sep Website Issues [resolved]
Posted: 25 Sep 8:04 AM
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Soil Temperatures
Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.
Current Data
The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.
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