Weather in Grenville in August

General weather information about Grenville

Average annual temperature is 7.6 °C

Absolute maximum temperature: 33.7 °C

Absolute minimum temperature: -31.0 °C

Number of sunny days: 131 days

Number of rainy days: 184 days

Number of snow days: 50 days

Look at detailed online map of Grenville

* Weather data for Grenville Canada is based on climate observations for 2026 year

Grenville air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.79.67.724.531.533.731.826.731.027.714.38.1
Average daytime temperature (°C)-1.6-2.13.112.519.423.926.223.522.715.74.71.5
Average temperature (°C)-5.5-7.4-1.35.712.718.221.418.817.511.60.6-1.8
Average night temperature (°C)-9.4-11.9-5.20.46.413.117.515.013.48.5-2.5-4.7
Absolute minimum temperature (°C)-20.8-31.0-11.8-9.3-0.37.913.010.47.7-1.6-9.4-19.1

Grenville monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.210.411.913.514.915.615.314.112.510.99.58.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.25.16.17.910.810.111.19.99.85.25.02.8
Precipitation (mm)1087869106811011591595613756107
Sunny days849142074102191213
Rainy days891416112327219221113
Snow days15158000000075

Grenville - weather forecast by months

Grenville weather in januaryGrenville weather in februaryGrenville weather in marchGrenville weather in aprilGrenville weather in mayGrenville weather in juneGrenville weather in julyGrenville weather in augustGrenville weather in septemberGrenville weather in octoberGrenville weather in novemberGrenville weather in december

Best time to visit Grenville:

The best time to visit Grenville during the most sunny months:

  • May — 10.8(h)
  • June — 10.1(h)
  • July — 11.1(h)
  • August — 9.9(h)
  • September — 9.8(h)

Months with the longest average daylight duration in Grenville:

  • June — 15.6(h)
  • July — 15.3(h)

The largest precipitation sum in Grenville is at

  • July — 159(mm)
  • August — 159(mm)
  • October — 137(mm)

    • Weather forecast in the closest to Grenville admin centers

    Weather forecast in the closest towns to Grenville

    Explore Grenville

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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