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Chicago, IL vs Willow Grove, PA weather comparison

Chicago

IL

Chicago picks up around 17 more inches of snow each winter.

Willow Grove enjoys about 19 more sunny days a year than Chicago.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Chicago, IL and Willow Grove, PA
ChicagoMetricWillow Grove
180 daysSunny daysclear or partly cloudy skies199 days
39 inPrecipitationper year45 in
132 daysWet daysrain or snow per year124 days
37 inSnowfallper year20 in
16 daysHot daysabove 90 °F24 days
102 daysFreezing nightsat or below 32 °F96 days
71%Humidityaverage relative69%
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.

ChicagoWillow Grove

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 °FWillow Grove, Jan: 40 °FWillow Grove, Feb: 43 °FWillow Grove, Mar: 51 °FWillow Grove, Apr: 63 °FWillow Grove, May: 73 °FWillow Grove, Jun: 82 °FWillow Grove, Jul: 86 °FWillow Grove, Aug: 84 °FWillow Grove, Sep: 77 °FWillow Grove, Oct: 65 °FWillow Grove, Nov: 55 °FWillow Grove, Dec: 44 °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 °FWillow Grove, Jan: 24 °FWillow Grove, Feb: 26 °FWillow Grove, Mar: 32 °FWillow Grove, Apr: 42 °FWillow Grove, May: 52 °FWillow Grove, Jun: 62 °FWillow Grove, Jul: 67 °FWillow Grove, Aug: 65 °FWillow Grove, Sep: 58 °FWillow Grove, Oct: 47 °FWillow Grove, Nov: 37 °FWillow Grove, Dec: 29 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
Willow Grove high404351637382868477655544
Chicago low202331415161676760473625
Willow Grove low242632425262676558473729

Monthly precipitation

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

ChicagoWillow Grove
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 inWillow Grove, Jan: 3.3 inWillow Grove, Feb: 3.0 inWillow Grove, Mar: 4.2 inWillow Grove, Apr: 3.7 inWillow Grove, May: 3.6 inWillow Grove, Jun: 4.2 inWillow Grove, Jul: 4.3 inWillow Grove, Aug: 4.1 inWillow Grove, Sep: 4.2 inWillow Grove, Oct: 3.7 inWillow Grove, Nov: 3.0 inWillow Grove, Dec: 4.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4
Willow Grove3.33.04.23.73.64.24.34.14.23.73.04.1

Monthly sunny days

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

ChicagoWillow Grove
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 daysWillow Grove, Jan: 16 daysWillow Grove, Feb: 15 daysWillow Grove, Mar: 16 daysWillow Grove, Apr: 15 daysWillow Grove, May: 16 daysWillow Grove, Jun: 16 daysWillow Grove, Jul: 18 daysWillow Grove, Aug: 18 daysWillow Grove, Sep: 18 daysWillow Grove, Oct: 19 daysWillow Grove, Nov: 17 daysWillow Grove, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
Willow Grove161516151616181818191716

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).