Best year time to visit Harriston

General weather information about Harriston

Average annual temperature is 7.8 °C

Absolute maximum temperature: 31.3 °C

Absolute minimum temperature: -28.9 °C

Number of sunny days: 129 days

Number of rainy days: 199 days

Number of snow days: 37 days

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

Harriston air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.110.711.517.627.631.329.924.728.823.014.214.3
Average daytime temperature (°C)2.80.13.010.815.419.325.322.121.215.85.73.8
Average temperature (°C)-0.5-5.0-1.05.39.614.821.018.116.611.41.70.3
Average night temperature (°C)-3.9-9.5-4.31.14.811.217.614.813.48.3-1.5-2.6
Absolute minimum temperature (°C)-9.5-28.9-10.2-5.40.86.714.711.06.61.0-7.5-14.1

Harriston 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)9.210.411.913.514.815.515.214.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.55.46.08.89.86.48.88.97.96.44.93.3
Precipitation (mm)247701095171217189197119171128144
Sunny days51111141473916111414
Rainy days18710141723282214201214
Snow days81010200000043

Harriston - weather forecast by months

Harriston weather in januaryHarriston weather in februaryHarriston weather in marchHarriston weather in aprilHarriston weather in mayHarriston weather in juneHarriston weather in julyHarriston weather in augustHarriston weather in septemberHarriston weather in octoberHarriston weather in novemberHarriston weather in december

Best time to visit Harriston:

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

  • April — 8.8(h)
  • May — 9.8(h)
  • July — 8.8(h)
  • August — 8.9(h)

Months with the longest average daylight duration in Harriston:

  • June — 15.5(h)

The largest precipitation sum in Harriston is at

  • January — 247(mm)
  • June — 217(mm)
  • July — 189(mm)
  • August — 197(mm)

    • Weather forecast in the closest to Harriston admin centers

    Weather forecast in the closest towns to Harriston

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    Frequently asked questions

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