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Old Greenwich, CT vs Philadelphia, PA weather comparison

Old Greenwich

CT

Philadelphia endures about 23 more days above 90 °F each year.

Old Greenwich picks up around 14 more inches of snow each winter.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Old Greenwich, CT and Philadelphia, PA
Old GreenwichMetricPhiladelphia
202 daysSunny daysclear or partly cloudy skies203 days
44 inPrecipitationper year43 in
122 daysWet daysrain or snow per year120 days
33 inSnowfallper year18 in
14 daysHot daysabove 90 °F36 days
105 daysFreezing nightsat or below 32 °F76 days
73%Humidityaverage relative68%
53 °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.

Old GreenwichPhiladelphia

Daily highs

406080JanMarMayJulSepNovOld Greenwich, Jan: 38 °FOld Greenwich, Feb: 41 °FOld Greenwich, Mar: 48 °FOld Greenwich, Apr: 61 °FOld Greenwich, May: 71 °FOld Greenwich, Jun: 79 °FOld Greenwich, Jul: 84 °FOld Greenwich, Aug: 82 °FOld Greenwich, Sep: 75 °FOld Greenwich, Oct: 64 °FOld Greenwich, Nov: 53 °FOld Greenwich, Dec: 43 °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

204060JanMarMayJulSepNovOld Greenwich, Jan: 23 °FOld Greenwich, Feb: 24 °FOld Greenwich, Mar: 31 °FOld Greenwich, Apr: 40 °FOld Greenwich, May: 50 °FOld Greenwich, Jun: 59 °FOld Greenwich, Jul: 65 °FOld Greenwich, Aug: 64 °FOld Greenwich, Sep: 57 °FOld Greenwich, Oct: 46 °FOld Greenwich, Nov: 36 °FOld Greenwich, Dec: 28 °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
Old Greenwich high384148617179848275645343
Philadelphia high414453657584898680675646
Old Greenwich low232431405059656457463628
Philadelphia low272935455565706861504032

Monthly precipitation

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

Old GreenwichPhiladelphia
0.02.04.0JanMarMayJulSepNovOld Greenwich, Jan: 3.3 inOld Greenwich, Feb: 3.1 inOld Greenwich, Mar: 4.1 inOld Greenwich, Apr: 3.6 inOld Greenwich, May: 3.4 inOld Greenwich, Jun: 3.7 inOld Greenwich, Jul: 3.6 inOld Greenwich, Aug: 4.1 inOld Greenwich, Sep: 3.7 inOld Greenwich, Oct: 4.0 inOld Greenwich, Nov: 3.2 inOld Greenwich, Dec: 4.1 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
Old Greenwich3.33.14.13.63.43.73.64.13.74.03.24.1
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.

Old GreenwichPhiladelphia
01020JanMarMayJulSepNovOld Greenwich, Jan: 17 daysOld Greenwich, Feb: 16 daysOld Greenwich, Mar: 17 daysOld Greenwich, Apr: 15 daysOld Greenwich, May: 15 daysOld Greenwich, Jun: 15 daysOld Greenwich, Jul: 19 daysOld Greenwich, Aug: 18 daysOld Greenwich, Sep: 18 daysOld Greenwich, Oct: 19 daysOld Greenwich, Nov: 17 daysOld Greenwich, Dec: 17 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
Old Greenwich171617151515191818191717
Philadelphia161616151616181918191716

Keep comparing

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

Old Greenwich vs another city

See the full Old Greenwich, CT climate profile

More Connecticut 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).