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Chicago, IL vs West Slope, OR weather comparison

Chicago

IL

Chicago picks up around 32 more inches of snow each winter.

West Slope has around 80 fewer freezing nights a year. Chicago enjoys about 20 more sunny days a year than West Slope.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Chicago, IL and West Slope, OR
ChicagoMetricWest Slope
180 daysSunny daysclear or partly cloudy skies160 days
39 inPrecipitationper year48 in
132 daysWet daysrain or snow per year143 days
37 inSnowfallper year6 in
16 daysHot daysabove 90 °F14 days
102 daysFreezing nightsat or below 32 °F22 days
71%Humidityaverage relative75%
52 °FAverage temperatureyear round55 °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.

ChicagoWest Slope

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 °FWest Slope, Jan: 49 °FWest Slope, Feb: 53 °FWest Slope, Mar: 57 °FWest Slope, Apr: 63 °FWest Slope, May: 69 °FWest Slope, Jun: 74 °FWest Slope, Jul: 81 °FWest Slope, Aug: 82 °FWest Slope, Sep: 76 °FWest Slope, Oct: 64 °FWest Slope, Nov: 54 °FWest Slope, Dec: 48 °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 °FWest Slope, Jan: 38 °FWest Slope, Feb: 38 °FWest Slope, Mar: 40 °FWest Slope, Apr: 43 °FWest Slope, May: 48 °FWest Slope, Jun: 52 °FWest Slope, Jul: 56 °FWest Slope, Aug: 56 °FWest Slope, Sep: 52 °FWest Slope, Oct: 46 °FWest Slope, Nov: 41 °FWest Slope, Dec: 37 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
West Slope high495357636974818276645448
Chicago low202331415161676760473625
West Slope low383840434852565652464137

Monthly precipitation

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

ChicagoWest Slope
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 inWest Slope, Jan: 6.6 inWest Slope, Feb: 5.1 inWest Slope, Mar: 5.7 inWest Slope, Apr: 4.5 inWest Slope, May: 2.8 inWest Slope, Jun: 1.7 inWest Slope, Jul: 0.5 inWest Slope, Aug: 0.6 inWest Slope, Sep: 1.6 inWest Slope, Oct: 4.2 inWest Slope, Nov: 6.9 inWest Slope, Dec: 7.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4
West Slope6.65.15.74.52.81.70.50.61.64.26.97.6

Monthly sunny days

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

ChicagoWest Slope
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 daysWest Slope, Jan: 7 daysWest Slope, Feb: 8 daysWest Slope, Mar: 8 daysWest Slope, Apr: 9 daysWest Slope, May: 13 daysWest Slope, Jun: 15 daysWest Slope, Jul: 24 daysWest Slope, Aug: 25 daysWest Slope, Sep: 21 daysWest Slope, Oct: 15 daysWest Slope, Nov: 8 daysWest Slope, Dec: 7 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
West Slope788913152425211587

Keep comparing

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

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).