Best year time to visit Washington County

General weather information about Washington County

Average annual temperature is 18.6 °C

Absolute maximum temperature: 37.7 °C

Absolute minimum temperature: -2.9 °C

Number of sunny days: 186 days

Number of rainy days: 179 days

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* Weather data for Washington County United States is based on climate observations for 2026 year

Washington County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)22.927.728.529.932.634.537.437.733.428.625.523.3
Average daytime temperature (°C)16.119.721.524.626.530.534.434.228.623.918.615.0
Average temperature (°C)10.714.215.218.320.824.528.127.822.918.112.89.8
Average night temperature (°C)6.510.09.912.916.119.523.022.818.013.18.25.7
Absolute minimum temperature (°C)-2.9-0.4-1.66.09.216.821.120.013.87.0-2.6-1.8

Washington County monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.311.012.013.013.914.314.113.312.411.410.510.0
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.27.58.69.59.910.711.311.510.29.07.26.5
Precipitation (mm)16892125118561165216347734695
Sunny days1513201314991017251922
Rainy days1615111717212221136119
Snow days000000000000

Washington County - weather forecast by months

Washington County weather in januaryWashington County weather in februaryWashington County weather in marchWashington County weather in aprilWashington County weather in mayWashington County weather in juneWashington County weather in julyWashington County weather in augustWashington County weather in septemberWashington County weather in octoberWashington County weather in novemberWashington County weather in december

Best time to visit Washington County:

The best time to visit Washington County during the most sunny months:

  • July — 11.3(h)
  • August — 11.5(h)

The largest precipitation sum in Washington County is at

  • January — 168(mm)
  • March — 125(mm)
  • August — 163(mm)

    • Weather forecast in the closest to Washington County admin centers

    Weather forecast in the closest towns to Washington County

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    MapTrains schedule
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    Frequently asked questions

    When is the best time to visit Washington County?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Washington County.
    What is the weather like in Washington County?
    See average temperature, rainfall and daylight hours for Washington County by month in the table above.
    How many sunny days does Washington County have?
    The monthly weather statistics above show sunshine and rainfall patterns for Washington County throughout the year.