Weather in St-Onge in September

General weather information about St-Onge

Average annual temperature is 8.0 °C

Absolute maximum temperature: 33.8 °C

Absolute minimum temperature: -32.1 °C

Number of sunny days: 116 days

Number of rainy days: 198 days

Number of snow days: 51 days

Look at detailed online map of St-Onge

* Weather data for St-Onge Canada is based on climate observations for 2026 year

St-Onge air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.011.38.226.831.833.831.826.931.628.014.89.4
Average daytime temperature (°C)-1.3-0.23.013.719.624.926.623.822.815.75.42.2
Average temperature (°C)-5.2-6.3-1.47.012.918.921.518.817.111.71.2-1.0
Average night temperature (°C)-8.9-11.4-5.51.46.213.217.214.412.28.4-2.3-3.5
Absolute minimum temperature (°C)-22.1-32.1-12.8-9.1-1.77.611.69.45.7-3.6-7.9-14.9

St-Onge 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)9.210.411.913.514.915.615.214.112.511.09.68.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)2.95.36.47.711.010.111.310.09.85.45.12.6
Precipitation (mm)1127982101811031771283011754103
Sunny days6291322936208108
Rainy days9141217921282510231317
Snow days161210000000076

St-Onge - weather forecast by months

St-Onge weather in januarySt-Onge weather in februarySt-Onge weather in marchSt-Onge weather in aprilSt-Onge weather in maySt-Onge weather in juneSt-Onge weather in julySt-Onge weather in augustSt-Onge weather in septemberSt-Onge weather in octoberSt-Onge weather in novemberSt-Onge weather in december

Best time to visit St-Onge:

The best time to visit St-Onge during the most sunny months:

  • May — 11.0(h)
  • June — 10.1(h)
  • July — 11.3(h)
  • August — 10.0(h)
  • September — 9.8(h)

Months with the longest average daylight duration in St-Onge:

  • June — 15.6(h)

The largest precipitation sum in St-Onge is at

  • July — 177(mm)
  • August — 128(mm)

    • Weather forecast in the closest to St-Onge admin centers

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    Frequently asked questions

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