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Chicago, IL vs San Dimas, CA weather comparison

Chicago

IL

Chicago picks up around 37 more inches of snow each winter.

San Dimas has around 99 fewer freezing nights a year. San Dimas endures about 56 more days above 90 °F each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Chicago, IL and San Dimas, CA
ChicagoMetricSan Dimas
180 daysSunny daysclear or partly cloudy skies290 days
39 inPrecipitationper year16 in
132 daysWet daysrain or snow per year38 days
37 inSnowfallper year0 in
16 daysHot daysabove 90 °F72 days
102 daysFreezing nightsat or below 32 °F3 days
71%Humidityaverage relative60%
52 °FAverage temperatureyear round65 °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.

ChicagoSan Dimas

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 °FSan Dimas, Jan: 68 °FSan Dimas, Feb: 67 °FSan Dimas, Mar: 72 °FSan Dimas, Apr: 76 °FSan Dimas, May: 79 °FSan Dimas, Jun: 85 °FSan Dimas, Jul: 91 °FSan Dimas, Aug: 93 °FSan Dimas, Sep: 89 °FSan Dimas, Oct: 81 °FSan Dimas, Nov: 74 °FSan Dimas, Dec: 67 °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 °FSan Dimas, Jan: 43 °FSan Dimas, Feb: 44 °FSan Dimas, Mar: 47 °FSan Dimas, Apr: 50 °FSan Dimas, May: 54 °FSan Dimas, Jun: 57 °FSan Dimas, Jul: 62 °FSan Dimas, Aug: 63 °FSan Dimas, Sep: 61 °FSan Dimas, Oct: 54 °FSan Dimas, Nov: 47 °FSan Dimas, Dec: 42 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
San Dimas high686772767985919389817467
Chicago low202331415161676760473625
San Dimas low434447505457626361544742

Monthly precipitation

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

ChicagoSan Dimas
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 inSan Dimas, Jan: 3.6 inSan Dimas, Feb: 4.0 inSan Dimas, Mar: 2.4 inSan Dimas, Apr: 1.0 inSan Dimas, May: 0.4 inSan Dimas, Jun: 0.1 inSan Dimas, Jul: 0.1 inSan Dimas, Aug: 0.0 inSan Dimas, Sep: 0.2 inSan Dimas, Oct: 0.7 inSan Dimas, Nov: 1.0 inSan Dimas, Dec: 2.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4
San Dimas3.64.02.41.00.40.10.10.00.20.71.02.4

Monthly sunny days

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

ChicagoSan Dimas
0102030JanMarMayJulSepNovChicago, 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 daysSan Dimas, Jan: 19 daysSan Dimas, Feb: 17 daysSan Dimas, Mar: 20 daysSan Dimas, Apr: 23 daysSan Dimas, May: 25 daysSan Dimas, Jun: 28 daysSan Dimas, Jul: 29 daysSan Dimas, Aug: 30 daysSan Dimas, Sep: 29 daysSan Dimas, Oct: 27 daysSan Dimas, Nov: 24 daysSan Dimas, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
San Dimas191720232528293029272421

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

San Dimas vs another city

See the full San Dimas, CA climate profile

More California 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).