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Chicago, IL vs Summit, WA weather comparison

Chicago

IL

Summit has around 60 fewer freezing nights a year.

Chicago picks up around 19 more inches of snow each winter. Chicago enjoys about 32 more sunny days a year than Summit.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Chicago, IL and Summit, WA
ChicagoMetricSummit
180 daysSunny daysclear or partly cloudy skies148 days
39 inPrecipitationper year54 in
132 daysWet daysrain or snow per year156 days
37 inSnowfallper year18 in
16 daysHot daysabove 90 °F2 days
102 daysFreezing nightsat or below 32 °F42 days
71%Humidityaverage relative79%
52 °FAverage temperatureyear round52 °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.

ChicagoSummit

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 °FSummit, Jan: 47 °FSummit, Feb: 49 °FSummit, Mar: 53 °FSummit, Apr: 58 °FSummit, May: 65 °FSummit, Jun: 70 °FSummit, Jul: 76 °FSummit, Aug: 77 °FSummit, Sep: 70 °FSummit, Oct: 60 °FSummit, Nov: 51 °FSummit, Dec: 46 °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 °FSummit, Jan: 35 °FSummit, Feb: 35 °FSummit, Mar: 38 °FSummit, Apr: 41 °FSummit, May: 47 °FSummit, Jun: 51 °FSummit, Jul: 55 °FSummit, Aug: 55 °FSummit, Sep: 51 °FSummit, Oct: 44 °FSummit, Nov: 38 °FSummit, Dec: 35 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
Summit high474953586570767770605146
Chicago low202331415161676760473625
Summit low353538414751555551443835

Monthly precipitation

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

ChicagoSummit
0.02.55.07.5JanMarMayJulSepNovChicago, 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 inSummit, Jan: 7.5 inSummit, Feb: 5.3 inSummit, Mar: 6.0 inSummit, Apr: 4.6 inSummit, May: 3.1 inSummit, Jun: 2.3 inSummit, Jul: 0.8 inSummit, Aug: 1.1 inSummit, Sep: 2.5 inSummit, Oct: 5.2 inSummit, Nov: 8.1 inSummit, Dec: 7.7 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4
Summit7.55.36.04.63.12.30.81.12.55.28.17.7

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

ChicagoSummit
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 daysSummit, Jan: 7 daysSummit, Feb: 9 daysSummit, Mar: 8 daysSummit, Apr: 10 daysSummit, May: 12 daysSummit, Jun: 14 daysSummit, Jul: 21 daysSummit, Aug: 22 daysSummit, Sep: 18 daysSummit, Oct: 12 daysSummit, Nov: 7 daysSummit, Dec: 7 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
Summit7981012142122181277

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

Summit vs another city

See the full Summit, WA climate profile

More Washington 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).