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Grimes, IA weather and climate

Dallas County, IA · population 15,810 · about 991 ft elevation

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

The year at a glance

Sunny days
203
clear or partly cloudy, per year
Precipitation
38 in
per year
Wet days
114
rain or snow per year
Snowfall
34 in
per year
Hot days
19
above 90 °F
Freezing nights
134
at or below 32 °F
Humidity
70%
average relative
Average temperature
50 °F
year round

Monthly temperatures

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

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 30 °FDaily high, Feb: 35 °FDaily high, Mar: 48 °FDaily high, Apr: 61 °FDaily high, May: 72 °FDaily high, Jun: 81 °FDaily high, Jul: 85 °FDaily high, Aug: 83 °FDaily high, Sep: 76 °FDaily high, Oct: 63 °FDaily high, Nov: 48 °FDaily high, Dec: 35 °FDaily low, Jan: 13 °FDaily low, Feb: 17 °FDaily low, Mar: 29 °FDaily low, Apr: 40 °FDaily low, May: 51 °FDaily low, Jun: 62 °FDaily low, Jul: 65 °FDaily low, Aug: 63 °FDaily low, Sep: 55 °FDaily low, Oct: 42 °FDaily low, Nov: 30 °FDaily low, Dec: 19 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high303548617281858376634835
Daily low131729405162656355423019

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovGrimes, Jan: 1.2 inGrimes, Feb: 1.5 inGrimes, Mar: 2.6 inGrimes, Apr: 4.3 inGrimes, May: 5.5 inGrimes, Jun: 5.0 inGrimes, Jul: 3.7 inGrimes, Aug: 3.9 inGrimes, Sep: 3.5 inGrimes, Oct: 2.9 inGrimes, Nov: 2.1 inGrimes, Dec: 1.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Grimes1.21.52.64.35.55.03.73.93.52.92.11.6

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovGrimes, Jan: 14 daysGrimes, Feb: 13 daysGrimes, Mar: 16 daysGrimes, Apr: 14 daysGrimes, May: 16 daysGrimes, Jun: 17 daysGrimes, Jul: 21 daysGrimes, Aug: 21 daysGrimes, Sep: 21 daysGrimes, Oct: 19 daysGrimes, Nov: 16 daysGrimes, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Grimes141316141617212121191615

Compare Grimes with another city

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See weather for every covered Iowa city

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).