Skip to content
VSWeather

Des Plaines, IL vs Mount Prospect, IL weather comparison

Des Plaines

IL

Des Plaines and Mount Prospect have remarkably similar climates.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Des Plaines, IL and Mount Prospect, IL
Des PlainesMetricMount Prospect
182 daysSunny daysclear or partly cloudy skies182 days
37 inPrecipitationper year37 in
127 daysWet daysrain or snow per year127 days
38 inSnowfallper year37 in
16 daysHot daysabove 90 °F16 days
119 daysFreezing nightsat or below 32 °F119 days
71%Humidityaverage relative71%
51 °FAverage temperatureyear round51 °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.

Des PlainesMount Prospect

Daily highs

406080JanMarMayJulSepNovDes Plaines, Jan: 32 °FDes Plaines, Feb: 36 °FDes Plaines, Mar: 47 °FDes Plaines, Apr: 58 °FDes Plaines, May: 70 °FDes Plaines, Jun: 80 °FDes Plaines, Jul: 84 °FDes Plaines, Aug: 82 °FDes Plaines, Sep: 75 °FDes Plaines, Oct: 63 °FDes Plaines, Nov: 49 °FDes Plaines, Dec: 37 °FMount Prospect, Jan: 32 °FMount Prospect, Feb: 36 °FMount Prospect, Mar: 47 °FMount Prospect, Apr: 58 °FMount Prospect, May: 70 °FMount Prospect, Jun: 80 °FMount Prospect, Jul: 84 °FMount Prospect, Aug: 82 °FMount Prospect, Sep: 75 °FMount Prospect, Oct: 63 °FMount Prospect, Nov: 49 °FMount Prospect, Dec: 37 °F

Daily lows

204060JanMarMayJulSepNovDes Plaines, Jan: 18 °FDes Plaines, Feb: 21 °FDes Plaines, Mar: 30 °FDes Plaines, Apr: 40 °FDes Plaines, May: 50 °FDes Plaines, Jun: 60 °FDes Plaines, Jul: 66 °FDes Plaines, Aug: 65 °FDes Plaines, Sep: 56 °FDes Plaines, Oct: 45 °FDes Plaines, Nov: 34 °FDes Plaines, Dec: 24 °FMount Prospect, Jan: 18 °FMount Prospect, Feb: 21 °FMount Prospect, Mar: 30 °FMount Prospect, Apr: 39 °FMount Prospect, May: 50 °FMount Prospect, Jun: 60 °FMount Prospect, Jul: 66 °FMount Prospect, Aug: 64 °FMount Prospect, Sep: 56 °FMount Prospect, Oct: 44 °FMount Prospect, Nov: 33 °FMount Prospect, Dec: 24 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Plaines high323647587080848275634937
Mount Prospect high323647587080848275634937
Des Plaines low182130405060666556453424
Mount Prospect low182130395060666456443324

Monthly precipitation

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

Des PlainesMount Prospect
0.02.04.0JanMarMayJulSepNovDes Plaines, Jan: 2.1 inDes Plaines, Feb: 1.9 inDes Plaines, Mar: 2.5 inDes Plaines, Apr: 4.3 inDes Plaines, May: 4.4 inDes Plaines, Jun: 3.9 inDes Plaines, Jul: 3.6 inDes Plaines, Aug: 3.7 inDes Plaines, Sep: 2.9 inDes Plaines, Oct: 3.1 inDes Plaines, Nov: 2.4 inDes Plaines, Dec: 2.1 inMount Prospect, Jan: 2.1 inMount Prospect, Feb: 1.9 inMount Prospect, Mar: 2.5 inMount Prospect, Apr: 4.3 inMount Prospect, May: 4.4 inMount Prospect, Jun: 3.9 inMount Prospect, Jul: 3.6 inMount Prospect, Aug: 3.7 inMount Prospect, Sep: 2.9 inMount Prospect, Oct: 3.1 inMount Prospect, Nov: 2.4 inMount Prospect, Dec: 2.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Plaines2.11.92.54.34.43.93.63.72.93.12.42.1
Mount Prospect2.11.92.54.34.43.93.63.72.93.12.42.1

Monthly sunny days

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

Des PlainesMount Prospect
01020JanMarMayJulSepNovDes Plaines, Jan: 11 daysDes Plaines, Feb: 11 daysDes Plaines, Mar: 14 daysDes Plaines, Apr: 14 daysDes Plaines, May: 15 daysDes Plaines, Jun: 16 daysDes Plaines, Jul: 20 daysDes Plaines, Aug: 20 daysDes Plaines, Sep: 20 daysDes Plaines, Oct: 16 daysDes Plaines, Nov: 14 daysDes Plaines, Dec: 12 daysMount Prospect, Jan: 11 daysMount Prospect, Feb: 11 daysMount Prospect, Mar: 14 daysMount Prospect, Apr: 14 daysMount Prospect, May: 15 daysMount Prospect, Jun: 16 daysMount Prospect, Jul: 20 daysMount Prospect, Aug: 20 daysMount Prospect, Sep: 20 daysMount Prospect, Oct: 16 daysMount Prospect, Nov: 14 daysMount Prospect, Dec: 12 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Plaines111114141516202020161412
Mount Prospect111114141516202020161412

Keep comparing

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

Des Plaines vs another city

See the full Des Plaines, IL climate profile

More Illinois cities

Mount Prospect vs another city

See the full Mount Prospect, 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).