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Darien, IL vs Philadelphia, PA weather comparison

Darien

IL

Darien picks up around 15 more inches of snow each winter.

Philadelphia has around 58 fewer freezing nights a year. Philadelphia enjoys about 21 more sunny days a year than Darien.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Darien, IL and Philadelphia, PA
DarienMetricPhiladelphia
182 daysSunny daysclear or partly cloudy skies203 days
38 inPrecipitationper year43 in
127 daysWet daysrain or snow per year120 days
34 inSnowfallper year18 in
31 daysHot daysabove 90 °F36 days
133 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.

DarienPhiladelphia

Daily highs

406080JanMarMayJulSepNovDarien, Jan: 33 °FDarien, Feb: 37 °FDarien, Mar: 48 °FDarien, Apr: 61 °FDarien, May: 73 °FDarien, Jun: 83 °FDarien, Jul: 87 °FDarien, Aug: 85 °FDarien, Sep: 78 °FDarien, Oct: 64 °FDarien, Nov: 49 °FDarien, Dec: 38 °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

204060JanMarMayJulSepNovDarien, Jan: 15 °FDarien, Feb: 18 °FDarien, Mar: 28 °FDarien, Apr: 38 °FDarien, May: 49 °FDarien, Jun: 59 °FDarien, Jul: 63 °FDarien, Aug: 62 °FDarien, Sep: 54 °FDarien, Oct: 42 °FDarien, Nov: 31 °FDarien, Dec: 21 °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
Darien high333748617383878578644938
Philadelphia high414453657584898680675646
Darien low151828384959636254423121
Philadelphia low272935455565706861504032

Monthly precipitation

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

DarienPhiladelphia
0.02.04.0JanMarMayJulSepNovDarien, Jan: 2.1 inDarien, Feb: 2.0 inDarien, Mar: 2.7 inDarien, Apr: 4.4 inDarien, May: 4.5 inDarien, Jun: 4.2 inDarien, Jul: 3.7 inDarien, Aug: 3.7 inDarien, Sep: 2.9 inDarien, Oct: 3.1 inDarien, Nov: 2.5 inDarien, 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
Darien2.12.02.74.44.54.23.73.72.93.12.52.1
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.

DarienPhiladelphia
01020JanMarMayJulSepNovDarien, Jan: 11 daysDarien, Feb: 11 daysDarien, Mar: 14 daysDarien, Apr: 13 daysDarien, May: 15 daysDarien, Jun: 16 daysDarien, Jul: 20 daysDarien, Aug: 20 daysDarien, Sep: 20 daysDarien, Oct: 17 daysDarien, Nov: 14 daysDarien, 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
Darien111114131516202020171412
Philadelphia161616151616181918191716

Keep comparing

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

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).