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Chicago, IL vs San Diego, CA weather comparison

Chicago

IL

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

San Diego has around 102 fewer freezing nights a year. San Diego sees rain or snow on roughly 94 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 San Diego, CA
ChicagoMetricSan Diego
180 daysSunny daysclear or partly cloudy skies283 days
39 inPrecipitationper year12 in
132 daysWet daysrain or snow per year38 days
37 inSnowfallper year0 in
16 daysHot daysabove 90 °F15 days
102 daysFreezing nightsat or below 32 °F0 days
71%Humidityaverage relative74%
52 °FAverage temperatureyear round64 °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 Diego

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 Diego, Jan: 67 °FSan Diego, Feb: 67 °FSan Diego, Mar: 69 °FSan Diego, Apr: 71 °FSan Diego, May: 72 °FSan Diego, Jun: 75 °FSan Diego, Jul: 80 °FSan Diego, Aug: 82 °FSan Diego, Sep: 81 °FSan Diego, Oct: 78 °FSan Diego, Nov: 73 °FSan Diego, 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 Diego, Jan: 46 °FSan Diego, Feb: 47 °FSan Diego, Mar: 50 °FSan Diego, Apr: 53 °FSan Diego, May: 57 °FSan Diego, Jun: 60 °FSan Diego, Jul: 64 °FSan Diego, Aug: 65 °FSan Diego, Sep: 64 °FSan Diego, Oct: 58 °FSan Diego, Nov: 50 °FSan Diego, Dec: 45 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
San Diego high676769717275808281787367
Chicago low202331415161676760473625
San Diego low464750535760646564585045

Monthly precipitation

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

ChicagoSan Diego
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 Diego, Jan: 2.3 inSan Diego, Feb: 2.9 inSan Diego, Mar: 1.9 inSan Diego, Apr: 0.9 inSan Diego, May: 0.4 inSan Diego, Jun: 0.1 inSan Diego, Jul: 0.1 inSan Diego, Aug: 0.1 inSan Diego, Sep: 0.2 inSan Diego, Oct: 0.6 inSan Diego, Nov: 0.9 inSan Diego, Dec: 1.9 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 Diego2.32.91.90.90.40.10.10.10.20.60.91.9

Monthly sunny days

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

ChicagoSan Diego
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 Diego, Jan: 20 daysSan Diego, Feb: 17 daysSan Diego, Mar: 20 daysSan Diego, Apr: 22 daysSan Diego, May: 22 daysSan Diego, Jun: 26 daysSan Diego, Jul: 28 daysSan Diego, Aug: 30 daysSan Diego, Sep: 28 daysSan Diego, Oct: 26 daysSan Diego, Nov: 24 daysSan Diego, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
San Diego201720222226283028262421

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 Diego vs another city

See the full San Diego, 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).