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Chicago, IL vs Denison, IA weather comparison

Chicago

IL

Chicago has around 48 fewer freezing nights a year.

Denison enjoys about 27 more sunny days a year than Chicago. Denison sees rain or snow on roughly 22 fewer days each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Chicago, IL and Denison, IA
ChicagoMetricDenison
180 daysSunny daysclear or partly cloudy skies207 days
39 inPrecipitationper year36 in
132 daysWet daysrain or snow per year110 days
37 inSnowfallper year34 in
16 daysHot daysabove 90 °F14 days
102 daysFreezing nightsat or below 32 °F149 days
71%Humidityaverage relative70%
52 °FAverage temperatureyear round47 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

ChicagoDenison

Daily highs

406080JanMarMayJulSepNovChicago, Jan: 32 °FChicago, Feb: 36 °FChicago, Mar: 46 °FChicago, Apr: 57 °FChicago, May: 68 °FChicago, Jun: 78 °FChicago, Jul: 83 °FChicago, Aug: 81 °FChicago, Sep: 75 °FChicago, Oct: 62 °FChicago, Nov: 49 °FChicago, Dec: 37 °FDenison, Jan: 27 °FDenison, Feb: 32 °FDenison, Mar: 45 °FDenison, Apr: 58 °FDenison, May: 69 °FDenison, Jun: 80 °FDenison, Jul: 83 °FDenison, Aug: 81 °FDenison, Sep: 75 °FDenison, Oct: 62 °FDenison, Nov: 46 °FDenison, Dec: 32 °F

Daily lows

204060JanMarMayJulSepNovChicago, Jan: 20 °FChicago, Feb: 23 °FChicago, Mar: 31 °FChicago, Apr: 41 °FChicago, May: 51 °FChicago, Jun: 61 °FChicago, Jul: 67 °FChicago, Aug: 67 °FChicago, Sep: 60 °FChicago, Oct: 47 °FChicago, Nov: 36 °FChicago, Dec: 25 °FDenison, Jan: 10 °FDenison, Feb: 14 °FDenison, Mar: 25 °FDenison, Apr: 36 °FDenison, May: 49 °FDenison, Jun: 59 °FDenison, Jul: 63 °FDenison, Aug: 61 °FDenison, Sep: 52 °FDenison, Oct: 39 °FDenison, Nov: 26 °FDenison, Dec: 16 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
Denison high273245586980838175624632
Chicago low202331415161676760473625
Denison low101425364959636152392616

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

ChicagoDenison
0.02.04.0JanMarMayJulSepNovChicago, Jan: 2.4 inChicago, Feb: 2.1 inChicago, Mar: 2.8 inChicago, Apr: 4.5 inChicago, May: 4.4 inChicago, Jun: 4.0 inChicago, Jul: 3.6 inChicago, Aug: 3.8 inChicago, Sep: 3.0 inChicago, Oct: 3.3 inChicago, Nov: 2.8 inChicago, Dec: 2.4 inDenison, 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
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4
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, so compare the same month between cities.

ChicagoDenison
01020JanMarMayJulSepNovChicago, Jan: 10 daysChicago, Feb: 11 daysChicago, Mar: 14 daysChicago, Apr: 13 daysChicago, May: 15 daysChicago, Jun: 16 daysChicago, Jul: 20 daysChicago, Aug: 20 daysChicago, Sep: 20 daysChicago, Oct: 16 daysChicago, Nov: 14 daysChicago, Dec: 11 daysDenison, 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
Chicago101114131516202020161411
Denison151416151617222121201715

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Chicago vs another city

See the full Chicago, IL climate profile

More Illinois cities

Denison vs another city

See the full Denison, IA climate profile

More Iowa cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. 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).