Best year time to visit Saint Marys

General weather information about Saint Marys

Average annual temperature is 12.0 °C

Absolute maximum temperature: 37.3 °C

Absolute minimum temperature: -21.3 °C

Number of sunny days: 207 days

Number of rainy days: 138 days

Number of snow days: 20 days

Look at detailed online map of Saint Marys

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

Saint Marys air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.014.422.627.531.132.735.637.335.232.519.614.8
Average daytime temperature (°C)1.05.68.617.924.928.929.229.427.318.811.37.1
Average temperature (°C)-2.9-0.82.510.818.523.223.724.221.313.75.92.8
Average night temperature (°C)-6.0-5.4-1.85.312.317.418.719.616.09.31.4-0.5
Absolute minimum temperature (°C)-21.3-21.3-12.5-4.62.29.612.913.810.4-3.9-10.8-6.3

Saint Marys monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.610.611.913.314.515.114.813.812.511.19.99.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.87.47.29.611.612.312.111.510.57.77.14.8
Precipitation (mm)4552554162721489436701058
Sunny days181717172016141718162215
Rainy days681112111417141214712
Snow days733100000114

Saint Marys - weather forecast by months

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

Best time to visit Saint Marys:

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

  • May — 11.6(h)
  • June — 12.3(h)
  • July — 12.1(h)
  • August — 11.5(h)

The largest precipitation sum in Saint Marys is at

  • July — 148(mm)
  • August — 94(mm)

    • Weather forecast in the closest to Saint Marys admin centers

    Weather forecast in the closest towns to Saint Marys

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    MapTrains schedule
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    Frequently asked questions

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