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Mount Prospect, IL vs Philadelphia, PA weather comparison

Mount Prospect

IL

Mount Prospect picks up around 18 more inches of snow each winter.

Philadelphia has around 44 fewer freezing nights a year. Philadelphia enjoys about 21 more sunny days a year than Mount Prospect.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Mount Prospect, IL and Philadelphia, PA
Mount ProspectMetricPhiladelphia
182 daysSunny daysclear or partly cloudy skies203 days
37 inPrecipitationper year43 in
127 daysWet daysrain or snow per year120 days
37 inSnowfallper year18 in
16 daysHot daysabove 90 °F36 days
119 daysFreezing nightsat or below 32 °F76 days
71%Humidityaverage relative68%
51 °FAverage temperatureyear round57 °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.

Mount ProspectPhiladelphia

Daily highs

406080JanMarMayJulSepNovMount 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 °FPhiladelphia, Jan: 41 °FPhiladelphia, Feb: 44 °FPhiladelphia, Mar: 53 °FPhiladelphia, Apr: 65 °FPhiladelphia, May: 75 °FPhiladelphia, Jun: 84 °FPhiladelphia, Jul: 89 °FPhiladelphia, Aug: 86 °FPhiladelphia, Sep: 80 °FPhiladelphia, Oct: 67 °FPhiladelphia, Nov: 56 °FPhiladelphia, Dec: 46 °F

Daily lows

204060JanMarMayJulSepNovMount 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 °FPhiladelphia, Jan: 27 °FPhiladelphia, Feb: 29 °FPhiladelphia, Mar: 35 °FPhiladelphia, Apr: 45 °FPhiladelphia, May: 55 °FPhiladelphia, Jun: 65 °FPhiladelphia, Jul: 70 °FPhiladelphia, Aug: 68 °FPhiladelphia, Sep: 61 °FPhiladelphia, Oct: 50 °FPhiladelphia, Nov: 40 °FPhiladelphia, Dec: 32 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Mount Prospect high323647587080848275634937
Philadelphia high414453657584898680675646
Mount Prospect low182130395060666456443324
Philadelphia low272935455565706861504032

Monthly precipitation

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

Mount ProspectPhiladelphia
0.02.04.0JanMarMayJulSepNovMount 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 inPhiladelphia, Jan: 3.2 inPhiladelphia, Feb: 3.0 inPhiladelphia, Mar: 4.1 inPhiladelphia, Apr: 3.6 inPhiladelphia, May: 3.5 inPhiladelphia, Jun: 3.8 inPhiladelphia, Jul: 3.9 inPhiladelphia, Aug: 3.7 inPhiladelphia, Sep: 4.1 inPhiladelphia, Oct: 3.6 inPhiladelphia, Nov: 2.9 inPhiladelphia, Dec: 4.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Mount Prospect2.11.92.54.34.43.93.63.72.93.12.42.1
Philadelphia3.23.04.13.63.53.83.93.74.13.62.94.0

Monthly sunny days

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

Mount ProspectPhiladelphia
01020JanMarMayJulSepNovMount 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 daysPhiladelphia, Jan: 16 daysPhiladelphia, Feb: 16 daysPhiladelphia, Mar: 16 daysPhiladelphia, Apr: 15 daysPhiladelphia, May: 16 daysPhiladelphia, Jun: 16 daysPhiladelphia, Jul: 18 daysPhiladelphia, Aug: 19 daysPhiladelphia, Sep: 18 daysPhiladelphia, Oct: 19 daysPhiladelphia, Nov: 17 daysPhiladelphia, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Mount Prospect111114141516202020161412
Philadelphia161616151616181918191716

Keep comparing

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

Mount Prospect vs another city

See the full Mount Prospect, IL climate profile

More Illinois cities

Philadelphia vs another city

See the full Philadelphia, PA climate profile

More Pennsylvania 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).