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Washington (PA) Climate by Month

The climate in Washington is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to cold in the cooler months. It receives a reasonable amount of rain/snowfall. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Washington, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 28°C in July. In February, the coolest month of the year, temperatures drop to a chilly 2°C. At night, expect cooler temperatures, averaging -8°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

On average, Washington receives a reasonable amount of rain/snowfall, with an annual precipitation of 992 mm. Washington experiences moderate seasonal variation in rainfall, with monthly averages ranging from 114 mm in June, the wettest month, and 59 mm in February, the driest month.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Washington can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.4 hours of sunlight per day.

Monthly hours of sunshine

Data from: Pittsburgh, the United States of America (36 KM, 22 Miles).

Daily hours of sunshine

Data from: Pittsburgh, the United States of America (36 KM, 22 Miles).

The best time of year to visit Washington in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Washington?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Washington?
    July has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Washington?
    The coldest month is February with an average maximum temperature of 2°C.
  • Which is the wettest month in Washington?
    June tops the wettest month list with 114 mm of rainfall.
  • Which is the driest month in Washington?
    February is the driest month with 59 mm of precipitation.
  • Which is the sunniest month in Washington?
    July is the sunniest month with an average of 255 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Washington (PA)

    Mon   Nov 25
    13°C | -1°C
    S 11 km/h
    1.6 mm
    overcast and rain

    overcast and rain

    Tue   Nov 26
    12°C | -1°C
    W 22 km/h
    2.5 mm
    almost clear and  chance of slight rain

    almost clear and chance of slight rain

    Wed   Nov 27
    6°C | -2°C
    SW 7 km/h
    1.8 mm
    broken clouds and slight rain

    broken clouds and slight rain