Best year time to visit St. Marys

General weather information about St. Marys

Average annual temperature is 21.1 °C

Absolute maximum temperature: 37.2 °C

Absolute minimum temperature: 0.9 °C

Number of sunny days: 151 days

Number of rainy days: 214 days

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* Weather data for St. Marys United States is based on climate observations for 2026 year

St. Marys air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)27.228.730.329.129.934.937.236.433.328.826.223.7
Average daytime temperature (°C)19.522.723.124.325.729.232.131.929.025.221.018.1
Average temperature (°C)14.317.618.520.822.225.227.628.125.521.617.214.5
Average night temperature (°C)10.313.915.017.619.122.224.425.222.418.514.111.5
Absolute minimum temperature (°C)0.95.54.611.912.618.022.922.518.010.43.92.9

St. Marys monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.013.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.411.112.012.913.714.113.913.212.411.410.610.2
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)8.38.89.39.710.611.011.611.310.49.66.86.9
Precipitation (mm)395563102142165164110135686597
Sunny days1921141096567181620
Rainy days12717202224262523131411
Snow days000000000000

St. Marys - weather forecast by months

St. Marys weather in januarySt. Marys weather in februarySt. Marys weather in marchSt. Marys weather in aprilSt. Marys weather in maySt. Marys weather in juneSt. Marys weather in julySt. Marys weather in augustSt. Marys weather in septemberSt. Marys weather in octoberSt. Marys weather in novemberSt. Marys weather in december

Best time to visit St. Marys:

The largest precipitation sum in St. Marys is at

  • May — 142(mm)
  • June — 165(mm)
  • July — 164(mm)
  • September — 135(mm)

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    Frequently asked questions

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