Best year time to visit Saint Clair County

General weather information about Saint Clair County

Average annual temperature is 17.4 °C

Absolute maximum temperature: 36.7 °C

Absolute minimum temperature: -4.3 °C

Number of sunny days: 181 days

Number of rainy days: 184 days

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

Saint Clair County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)20.725.425.929.031.335.835.536.732.828.525.421.5
Average daytime temperature (°C)15.018.019.622.526.130.932.732.629.423.518.014.1
Average temperature (°C)9.812.113.216.120.024.226.026.122.917.711.88.5
Average night temperature (°C)5.98.07.811.015.118.721.221.518.113.07.34.3
Absolute minimum temperature (°C)-3.5-3.3-4.35.47.115.217.516.413.86.2-3.3-2.3

Saint Clair 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)10.211.012.013.013.914.414.113.412.411.310.410.0
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)5.86.98.89.710.511.611.010.610.78.87.37.0
Precipitation (mm)1491341661681239313013680288191
Sunny days14102116111261016222122
Rainy days171810142018252114999
Snow days000000000000

Saint Clair County - weather forecast by months

Saint Clair County weather in januarySaint Clair County weather in februarySaint Clair County weather in marchSaint Clair County weather in aprilSaint Clair County weather in maySaint Clair County weather in juneSaint Clair County weather in julySaint Clair County weather in augustSaint Clair County weather in septemberSaint Clair County weather in octoberSaint Clair County weather in novemberSaint Clair County weather in december

Best time to visit Saint Clair County:

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

  • June — 11.6(h)

The largest precipitation sum in Saint Clair County is at

  • January — 149(mm)
  • March — 166(mm)
  • April — 168(mm)

    • Weather forecast in the closest to Saint Clair County admin centers

    Weather forecast in the closest towns to Saint Clair County

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    Frequently asked questions

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