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Denison, IA weather and climate

Crawford County, IA · population 8,247 · about 1,273 ft elevation

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

The year at a glance

Sunny days
207
clear or partly cloudy, per year
Precipitation
36 in
per year
Wet days
110
rain or snow per year
Snowfall
34 in
per year
Hot days
14
above 90 °F
Freezing nights
149
at or below 32 °F
Humidity
70%
average relative
Average temperature
47 °F
year round

Monthly temperatures

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

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 27 °FDaily high, Feb: 32 °FDaily high, Mar: 45 °FDaily high, Apr: 58 °FDaily high, May: 69 °FDaily high, Jun: 80 °FDaily high, Jul: 83 °FDaily high, Aug: 81 °FDaily high, Sep: 75 °FDaily high, Oct: 62 °FDaily high, Nov: 46 °FDaily high, Dec: 32 °FDaily low, Jan: 10 °FDaily low, Feb: 14 °FDaily low, Mar: 25 °FDaily low, Apr: 36 °FDaily low, May: 49 °FDaily low, Jun: 59 °FDaily low, Jul: 63 °FDaily low, Aug: 61 °FDaily low, Sep: 52 °FDaily low, Oct: 39 °FDaily low, Nov: 26 °FDaily low, Dec: 16 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high273245586980838175624632
Daily low101425364959636152392616

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovDenison, Jan: 1.0 inDenison, Feb: 1.3 inDenison, Mar: 2.3 inDenison, Apr: 4.3 inDenison, May: 5.4 inDenison, Jun: 5.2 inDenison, Jul: 3.4 inDenison, Aug: 3.8 inDenison, Sep: 3.1 inDenison, Oct: 2.7 inDenison, Nov: 1.7 inDenison, Dec: 1.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Denison1.01.32.34.35.45.23.43.83.12.71.71.4

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovDenison, Jan: 15 daysDenison, Feb: 14 daysDenison, Mar: 16 daysDenison, Apr: 15 daysDenison, May: 16 daysDenison, Jun: 17 daysDenison, Jul: 22 daysDenison, Aug: 21 daysDenison, Sep: 21 daysDenison, Oct: 20 daysDenison, Nov: 17 daysDenison, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Denison151416151617222121201715

Compare Denison 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).