Best year time to visit St. Marys River

General weather information about St. Marys River

Average annual temperature is 8.0 °C

Absolute maximum temperature: 25.9 °C

Absolute minimum temperature: -26.6 °C

Number of sunny days: 138 days

Number of rainy days: 204 days

Number of snow days: 23 days

Look at detailed online map of St. Marys River

* Weather data for St. Marys River Canada is based on climate observations for 2026 year

St. Marys River air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.811.36.012.820.025.225.923.423.222.213.813.4
Average daytime temperature (°C)4.30.82.68.111.415.921.921.420.015.37.55.0
Average temperature (°C)1.3-3.8-0.24.37.613.019.218.616.812.13.92.0
Average night temperature (°C)-1.8-7.9-2.81.24.610.717.115.914.39.40.7-0.7
Absolute minimum temperature (°C)-9.7-26.6-8.3-4.8-0.76.313.913.18.33.1-7.1-6.6

St. Marys River monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.210.411.913.514.915.615.214.012.511.09.68.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.55.36.49.39.36.87.28.47.36.74.83.9
Precipitation (mm)237956752132169277264104247163309
Sunny days711917131210715131113
Rainy days20129131818212415181917
Snow days4513000000001

St. Marys River - weather forecast by months

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

Best time to visit St. Marys River:

The best time to visit St. Marys River during the most sunny months:

  • April — 9.3(h)
  • May — 9.3(h)
  • August — 8.4(h)

Months with the longest average daylight duration in St. Marys River:

  • June — 15.6(h)

The largest precipitation sum in St. Marys River is at

  • January — 237(mm)
  • July — 277(mm)
  • August — 264(mm)
  • October — 247(mm)
  • December — 309(mm)

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    Weather forecast in the closest towns to St. Marys River

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    Frequently asked questions

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