5-day weather forecast for Jefferson, Iowa

Weather changeability for Ames, Iowa

Temperature Last Month Last Year
Average change in high temperature day-to-day 8.9° 6.1°
Average change in low temperature day-to-day 13.4° 7.2°
Precipitation Last Month Last Year
Chance of dry day after a precip day 67% 57%
Chance of precip day after a dry day 7% 16%

Weather forecast accuracy for Ames, Iowa

Last Month
Weather Underground   79.17%
The Weather Channel   79.03%
Dark Sky (forecast.io)   78.76%
Foreca   78.23%
MeteoGroup   77.69%
AccuWeather   74.46%
NWS Digital Forecast   73.06%
World Weather Online   53.49%
Persistence   46.93%
Last Year
The Weather Channel   78.21%
Weather Underground   78.19%
MeteoGroup   76.81%
Foreca   76.26%
AccuWeather   75.05%
NWS Digital Forecast   70.95%
Dark Sky (forecast.io)   67.80%
World Weather Online   59.08%
Persistence   50.00%

ForecastAdvisor Fact

5.4% of The Weather Channel's high temperature forecasts for Ames were off by more than 10 degrees last month.