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Philadelphia, Pennsylvania Climate & Temperature

  • Philadelphia, Pennsylvania, Usa is at 3953'N, 7515'W, 9 m (30 ft). See map.
  • Philadelphia, Pennsylvania has a humid subtropical climate that is mild with no dry season, constantly moist (year-round rainfall). Summers are hot and muggy with thunderstorms. Winters are mild with precipitation from mid-latitude cyclones. Seasonality is moderate. (Kppen-Geiger classification: Cfa).
  • According to the Holdridge life zones system of bioclimatic classification Philadelphia, Pennsylvania is situated in or near the warm temperate moist forest biome.
  • The annual average temperature is 12.4 degrees Celsius (54.3 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 25.7 °C (46.3°F). This indicates that the continentality type is continental, subtype subcontinental. Philadelphia, Pennsylvania Climate Graph
  • In the winter time records indicate temperatures by day reach 4.9°C (40.8°F) on average falling to -3.8°C (25.2°F) overnight.
  • In spring time temperatures climb reaching 16.9°C (62.4°F) generally in the afternoon with overnight lows of 5.9°C (42.7°F).
  • During summer average high temperatures are 29°C (84.1°F) and average low temperatures are 18.4°C (65.2°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 19.1°C (66.3°F) during the day and lows of 8.6°C (47.5°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1051.8 mm (41.4 inches) which is equivalent to 1051.8 Litres/m (25.8 Gallons/ft).
  • On average there are 2613 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Philadelphia, Pennsylvania you would pop up nearest to the climate station at Albany, Western Australia, Australia where you would find a Mediterranean climate.

Philadelphia, Pennsylvania Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 3 (38) 5 (41) 11 (52) 17 (63) 23 (73) 28 (82) 30 (86) 29 (85) 25 (78) 19 (66) 13 (55) 6 (43) 18 (63)
 
Average Temperature °C ( °F) -1 (30) 1 (33) 6 (42) 11 (52) 17 (63) 22 (72) 25 (77) 24 (76) 20 (68) 14 (56) 8 (46) 2 (36) 12 (54)
 
Average Min Temperature °C ( °F) -5 (23) -4 (25) 1 (33) 6 (42) 12 (53) 17 (62) 20 (67) 19 (66) 15 (59) 8 (46) 3 (38) -2 (28) 7 (45)
 
Average Precipitation mm (in) 82 (3) 71 (3) 88 (3) 92 (4) 95 (4) 95 (4) 109 (4) 97 (4) 87 (3) 67 (3) 85 (3) 86 (3) 1052 (41)
Number of Wet Days (probability of rain on a day %) 12 (39) 9 (32) 12 (39) 11 (37) 11 (35) 10 (33) 10 (32) 10 (32) 9 (30) 8 (26) 9 (30) 10 (32) 121 (33)
Average Sunlight Hours/ Day 4h 44' 5h 50' 6h 46' 7h 34' 8h 25' 10h 10' 9h 36' 8h 19' 7h 44' 6h 44' 5h 14' 4h 38' 7h 09'
Average Daylight Hours/ Day 9h 40' 10h 37' 11h 52' 13h 13' 14h 21' 14h 56' 14h 40' 13h 41' 12h 24' 11h 03' 9h 55' 9h 22' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 50 (50) 56 (44) 58 (42) 58 (42) 59 (41) 69 (31) 66 (34) 61 (39) 63 (37) 62 (38) 54 (46) 50 (50) 60 (40)
Sun altitude at solar noon on the 21st day (). 30.3 39.6 50.5 62.1 70.4 73.6 70.5 62.1 50.6 39.2 30.1 26.7 50.4

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