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Boulder Hill, IL vs Philadelphia, PA weather comparison

Boulder Hill

IL

Philadelphia endures about 21 more days above 90 °F each year.

Philadelphia has around 55 fewer freezing nights a year. Boulder Hill picks up around 12 more inches of snow each winter.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Boulder Hill, IL and Philadelphia, PA
Boulder HillMetricPhiladelphia
182 daysSunny daysclear or partly cloudy skies203 days
38 inPrecipitationper year43 in
125 daysWet daysrain or snow per year120 days
30 inSnowfallper year18 in
16 daysHot daysabove 90 °F36 days
131 daysFreezing nightsat or below 32 °F76 days
71%Humidityaverage relative68%
50 °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.

Boulder HillPhiladelphia

Daily highs

406080JanMarMayJulSepNovBoulder Hill, Jan: 31 °FBoulder Hill, Feb: 35 °FBoulder Hill, Mar: 47 °FBoulder Hill, Apr: 60 °FBoulder Hill, May: 71 °FBoulder Hill, Jun: 81 °FBoulder Hill, Jul: 84 °FBoulder Hill, Aug: 82 °FBoulder Hill, Sep: 76 °FBoulder Hill, Oct: 63 °FBoulder Hill, Nov: 48 °FBoulder Hill, Dec: 36 °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

204060JanMarMayJulSepNovBoulder Hill, Jan: 16 °FBoulder Hill, Feb: 19 °FBoulder Hill, Mar: 29 °FBoulder Hill, Apr: 39 °FBoulder Hill, May: 50 °FBoulder Hill, Jun: 60 °FBoulder Hill, Jul: 64 °FBoulder Hill, Aug: 62 °FBoulder Hill, Sep: 54 °FBoulder Hill, Oct: 42 °FBoulder Hill, Nov: 31 °FBoulder Hill, Dec: 22 °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
Boulder Hill high313547607181848276634836
Philadelphia high414453657584898680675646
Boulder Hill low161929395060646254423122
Philadelphia low272935455565706861504032

Monthly precipitation

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

Boulder HillPhiladelphia
0.02.04.0JanMarMayJulSepNovBoulder Hill, Jan: 2.1 inBoulder Hill, Feb: 2.0 inBoulder Hill, Mar: 2.7 inBoulder Hill, Apr: 4.4 inBoulder Hill, May: 4.6 inBoulder Hill, Jun: 4.3 inBoulder Hill, Jul: 3.7 inBoulder Hill, Aug: 3.6 inBoulder Hill, Sep: 3.0 inBoulder Hill, Oct: 3.1 inBoulder Hill, Nov: 2.5 inBoulder Hill, Dec: 2.2 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
Boulder Hill2.12.02.74.44.64.33.73.63.03.12.52.2
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.

Boulder HillPhiladelphia
01020JanMarMayJulSepNovBoulder Hill, Jan: 11 daysBoulder Hill, Feb: 11 daysBoulder Hill, Mar: 14 daysBoulder Hill, Apr: 13 daysBoulder Hill, May: 15 daysBoulder Hill, Jun: 16 daysBoulder Hill, Jul: 20 daysBoulder Hill, Aug: 20 daysBoulder Hill, Sep: 20 daysBoulder Hill, Oct: 17 daysBoulder Hill, Nov: 14 daysBoulder Hill, Dec: 11 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
Boulder Hill111114131516202020171411
Philadelphia161616151616181918191716

Keep comparing

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

Boulder Hill vs another city

See the full Boulder Hill, 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).