Best year time to visit Grafton

General weather information about Grafton

Average annual temperature is 9.6 °C

Absolute maximum temperature: 28.7 °C

Absolute minimum temperature: -24.0 °C

Number of sunny days: 152 days

Number of rainy days: 185 days

Number of snow days: 28 days

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

Grafton air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.910.57.920.022.626.527.825.528.724.713.710.9
Average daytime temperature (°C)1.72.53.611.616.321.625.023.221.515.37.34.9
Average temperature (°C)-0.9-2.00.47.212.218.421.619.918.012.64.32.5
Average night temperature (°C)-3.5-5.9-2.53.48.115.118.116.714.810.01.20.3
Absolute minimum temperature (°C)-12.0-24.0-8.5-6.12.611.814.512.09.8-0.1-4.9-7.3

Grafton 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)9.310.511.913.514.715.415.114.012.511.09.79.0
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.35.76.59.111.811.211.811.110.26.16.02.8
Precipitation (mm)9485104106538010745156257105
Sunny days9111413211271119111311
Rainy days1599161018242011201518
Snow days788100000022

Grafton - weather forecast by months

Grafton weather in januaryGrafton weather in februaryGrafton weather in marchGrafton weather in aprilGrafton weather in mayGrafton weather in juneGrafton weather in julyGrafton weather in augustGrafton weather in septemberGrafton weather in octoberGrafton weather in novemberGrafton weather in december

Best time to visit Grafton:

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

  • May — 11.8(h)
  • June — 11.2(h)
  • July — 11.8(h)
  • August — 11.1(h)
  • September — 10.2(h)

Months with the longest average daylight duration in Grafton:

  • June — 15.4(h)

The largest precipitation sum in Grafton is at

  • March — 104(mm)
  • April — 106(mm)
  • July — 107(mm)
  • December — 105(mm)

    • Weather forecast in the closest to Grafton admin centers

    Weather forecast in the closest towns to Grafton

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    Frequently asked questions

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