Philadelphia weather in January

Check the Philadelphia, Pennsylvania weather in January before you book your next holiday. This gives the best indication of the weather in January and includes figures for temperature, sunshine and rainfall.

  • 37°F maximum daytime temperature in January in Philadelphia37
    37°F max day temperature
  • 5 hours of sunshine per day (52% of daylight hours) in January in Philadelphia5
    5 hours of sunshine per day
  • 11 days with some rainfall in January in Philadelphia11
    11 days with some rainfall
  • 23°F minimum night-time temperature in January in Philadelphia23
    23°F min night temperature
  • 10 hours of daylight per day in January in Philadelphia10
    10 hours of daylight per day
  • No heat & humidity in January in Philadelphia0
    No heat & humidity
  • 3.3 inches monthly rainfall in January in Philadelphia3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Philadelphia2
    2 (Low) UV index

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Metric (°C)  |  Imperial (°F)

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Philadelphia weather by month

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