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Chicago, IL vs San Luis, AZ weather comparison

Chicago

IL

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

San Luis has around 101 fewer freezing nights a year. San Luis endures about 169 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 Luis, AZ
ChicagoMetricSan Luis
180 daysSunny daysclear or partly cloudy skies325 days
39 inPrecipitationper year3 in
132 daysWet daysrain or snow per year16 days
37 inSnowfallper year0 in
16 daysHot daysabove 90 °F185 days
102 daysFreezing nightsat or below 32 °F1 days
71%Humidityaverage relative34%
52 °FAverage temperatureyear round76 °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 Luis

Daily highs

5075100JanMarMayJulSepNovChicago, 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 Luis, Jan: 70 °FSan Luis, Feb: 74 °FSan Luis, Mar: 81 °FSan Luis, Apr: 87 °FSan Luis, May: 95 °FSan Luis, Jun: 104 °FSan Luis, Jul: 108 °FSan Luis, Aug: 107 °FSan Luis, Sep: 102 °FSan Luis, Oct: 91 °FSan Luis, Nov: 78 °FSan Luis, Dec: 68 °F

Daily lows

20406080JanMarMayJulSepNovChicago, 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 Luis, Jan: 47 °FSan Luis, Feb: 49 °FSan Luis, Mar: 54 °FSan Luis, Apr: 59 °FSan Luis, May: 65 °FSan Luis, Jun: 73 °FSan Luis, Jul: 80 °FSan Luis, Aug: 81 °FSan Luis, Sep: 75 °FSan Luis, Oct: 63 °FSan Luis, Nov: 53 °FSan Luis, Dec: 46 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago high323646576878838175624937
San Luis high7074818795104108107102917868
Chicago low202331415161676760473625
San Luis low474954596573808175635346

Monthly precipitation

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

ChicagoSan Luis
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 Luis, Jan: 0.4 inSan Luis, Feb: 0.5 inSan Luis, Mar: 0.4 inSan Luis, Apr: 0.1 inSan Luis, May: 0.0 inSan Luis, Jun: 0.0 inSan Luis, Jul: 0.2 inSan Luis, Aug: 0.4 inSan Luis, Sep: 0.5 inSan Luis, Oct: 0.2 inSan Luis, Nov: 0.2 inSan Luis, Dec: 0.4 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 Luis0.40.50.40.10.00.00.20.40.50.20.20.4

Monthly sunny days

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

ChicagoSan Luis
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 Luis, Jan: 25 daysSan Luis, Feb: 22 daysSan Luis, Mar: 27 daysSan Luis, Apr: 28 daysSan Luis, May: 29 daysSan Luis, Jun: 29 daysSan Luis, Jul: 28 daysSan Luis, Aug: 29 daysSan Luis, Sep: 29 daysSan Luis, Oct: 29 daysSan Luis, Nov: 26 daysSan Luis, Dec: 25 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Chicago101114131516202020161411
San Luis252227282929282929292625

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 Luis vs another city

See the full San Luis, AZ climate profile

More Arizona 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).