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Ames, IA weather and climate

Story County, IA · population 66,112 · about 932 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Ames's own coordinates.

The year at a glance

Sunny days
200
clear or partly cloudy, per year
Precipitation
38 in
per year
Wet days
115
rain or snow per year
Snowfall
30 in
per year
Hot days
16
above 90 °F
Freezing nights
146
at or below 32 °F
Humidity
70%
average relative
Average temperature
49 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 29 °FDaily high, Feb: 33 °FDaily high, Mar: 47 °FDaily high, Apr: 61 °FDaily high, May: 72 °FDaily high, Jun: 81 °FDaily high, Jul: 84 °FDaily high, Aug: 82 °FDaily high, Sep: 76 °FDaily high, Oct: 63 °FDaily high, Nov: 47 °FDaily high, Dec: 34 °FDaily low, Jan: 11 °FDaily low, Feb: 15 °FDaily low, Mar: 27 °FDaily low, Apr: 38 °FDaily low, May: 49 °FDaily low, Jun: 60 °FDaily low, Jul: 63 °FDaily low, Aug: 60 °FDaily low, Sep: 51 °FDaily low, Oct: 39 °FDaily low, Nov: 27 °FDaily low, Dec: 17 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high293347617281848276634734
Daily low111527384960636051392717

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovAmes, Jan: 1.2 inAmes, Feb: 1.4 inAmes, Mar: 2.5 inAmes, Apr: 4.5 inAmes, May: 5.5 inAmes, Jun: 5.1 inAmes, Jul: 3.8 inAmes, Aug: 4.0 inAmes, Sep: 3.6 inAmes, Oct: 2.9 inAmes, Nov: 2.0 inAmes, Dec: 1.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Ames1.21.42.54.55.55.13.84.03.62.92.01.6

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovAmes, Jan: 13 daysAmes, Feb: 13 daysAmes, Mar: 15 daysAmes, Apr: 14 daysAmes, May: 16 daysAmes, Jun: 17 daysAmes, Jul: 22 daysAmes, Aug: 21 daysAmes, Sep: 21 daysAmes, Oct: 19 daysAmes, Nov: 16 daysAmes, Dec: 14 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Ames131315141617222121191614

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).