Skip to content
VSWeather

Alton, TX vs Chicago, IL weather comparison

Alton

TX

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

Alton has around 99 fewer freezing nights a year. Alton endures about 159 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 Alton, TX and Chicago, IL
AltonMetricChicago
238 daysSunny daysclear or partly cloudy skies180 days
20 inPrecipitationper year39 in
41 daysWet daysrain or snow per year132 days
0 inSnowfallper year37 in
175 daysHot daysabove 90 °F16 days
2 daysFreezing nightsat or below 32 °F102 days
68%Humidityaverage relative71%
74 °FAverage temperatureyear round52 °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.

AltonChicago

Daily highs

406080100JanMarMayJulSepNovAlton, Jan: 70 °FAlton, Feb: 74 °FAlton, Mar: 80 °FAlton, Apr: 85 °FAlton, May: 90 °FAlton, Jun: 95 °FAlton, Jul: 96 °FAlton, Aug: 97 °FAlton, Sep: 92 °FAlton, Oct: 87 °FAlton, Nov: 78 °FAlton, Dec: 71 °FChicago, 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 °F

Daily lows

20406080JanMarMayJulSepNovAlton, Jan: 47 °FAlton, Feb: 52 °FAlton, Mar: 58 °FAlton, Apr: 63 °FAlton, May: 70 °FAlton, Jun: 75 °FAlton, Jul: 75 °FAlton, Aug: 76 °FAlton, Sep: 72 °FAlton, Oct: 64 °FAlton, Nov: 56 °FAlton, Dec: 49 °FChicago, 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 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Alton high707480859095969792877871
Chicago high323646576878838175624937
Alton low475258637075757672645649
Chicago low202331415161676760473625

Monthly precipitation

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

AltonChicago
0.02.04.0JanMarMayJulSepNovAlton, Jan: 1.0 inAlton, Feb: 0.9 inAlton, Mar: 1.3 inAlton, Apr: 1.6 inAlton, May: 2.0 inAlton, Jun: 1.9 inAlton, Jul: 2.0 inAlton, Aug: 1.5 inAlton, Sep: 3.3 inAlton, Oct: 2.2 inAlton, Nov: 1.3 inAlton, Dec: 1.1 inChicago, 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 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Alton1.00.91.31.62.01.92.01.53.32.21.31.1
Chicago2.42.12.84.54.44.03.63.83.03.32.82.4

Monthly sunny days

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

AltonChicago
01020JanMarMayJulSepNovAlton, Jan: 16 daysAlton, Feb: 15 daysAlton, Mar: 18 daysAlton, Apr: 18 daysAlton, May: 21 daysAlton, Jun: 23 daysAlton, Jul: 23 daysAlton, Aug: 23 daysAlton, Sep: 20 daysAlton, Oct: 24 daysAlton, Nov: 20 daysAlton, Dec: 17 daysChicago, 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 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Alton161518182123232320242017
Chicago101114131516202020161411

Keep comparing

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

Alton vs another city

See the full Alton, TX climate profile

More Texas cities

Chicago vs another city

See the full Chicago, IL climate profile

More Illinois 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).