Weather
Weather and climate are critical factors in Iowa's crop production. Find more information on weather-related tools, weather/climate outlooks, and resources for managing through weather events like flooding, windstorms, hail, and drought.
Weather Maps
Daily Soil Temperatures
YTD Accumulated Precipitation in Ames
Departure from normal precipitation from last 7 days across Iowa
Iowa Seasonal Snowfall Accumulation
What in the Weather?
Wish you could understand the weather better? Join Dan Fillius, Iowa State University Extension Horticulture Field Specialist, Madelynn Wuestenberg, ISU Extension Ag. Climatology Specialist, and Dr. Justin Glisan, Iowa’s State Climatologist, as they discuss what is happening in the world of Iowa weather.
Timely Insights on Weather
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March 6, 2025Content Author
Optimum nitrogen fertilizer rates for corn can vary by more than 100% from field-to-field and year-to-year. This variability is a product of near limitless interactions among crop genetics, management, and environment factors (weather & soil type). Among them, the amount of soil inorganic nitrogen in the soil is one of the most important (Baum et al., 2024).
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March 5, 2025Content Author
As we look ahead to spring, many wonder what conditions to anticipate and how this spring may compare to last. This article provides a brief climate outlook and information about current soil moisture conditions across the state.
Climate outlook
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December 2, 2024Content Author
Iowa State University Extension and Outreach Field Agronomists have completed their fall survey of subsoil moisture in northwest Iowa. Subsoil moisture sampling in Iowa dates back to February 1954 when ten sites were chosen for soil moisture sampling. In 1959, the sampling increased to 22 locations, and in 1971, 61 locations were sampled. Today, 18 locations are sampled in northwest Iowa.