Weather in Johnstown in December

General weather information about Johnstown

Average annual temperature is 9.7 °C

Absolute maximum temperature: 30.7 °C

Absolute minimum temperature: -28.4 °C

Number of sunny days: 156 days

Number of rainy days: 182 days

Number of snow days: 27 days

Look at detailed online map of Johnstown

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

Johnstown air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)6.611.110.226.827.229.930.727.030.627.614.910.1
Average daytime temperature (°C)1.52.54.414.219.023.726.724.423.116.07.24.7
Average temperature (°C)-1.7-2.70.28.613.419.222.220.018.112.43.51.8
Average night temperature (°C)-4.8-7.3-3.33.98.114.918.016.213.89.2-0.2-0.8
Absolute minimum temperature (°C)-14.4-28.4-10.9-6.32.710.113.510.78.0-1.4-5.9-8.6

Johnstown 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)9.310.511.913.514.815.415.114.012.511.09.78.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.35.56.19.111.711.011.611.010.15.45.92.9
Precipitation (mm)100779210748811055018534798
Sunny days81015122210111021121411
Rainy days1410101792020219191419
Snow days986100000021

Johnstown - weather forecast by months

Johnstown weather in januaryJohnstown weather in februaryJohnstown weather in marchJohnstown weather in aprilJohnstown weather in mayJohnstown weather in juneJohnstown weather in julyJohnstown weather in augustJohnstown weather in septemberJohnstown weather in octoberJohnstown weather in novemberJohnstown weather in december

Best time to visit Johnstown:

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

  • May — 11.7(h)
  • June — 11.0(h)
  • July — 11.6(h)
  • August — 11.0(h)
  • September — 10.1(h)

Months with the longest average daylight duration in Johnstown:

  • June — 15.4(h)

The largest precipitation sum in Johnstown is at

  • January — 100(mm)
  • March — 92(mm)
  • April — 107(mm)
  • July — 105(mm)
  • December — 98(mm)

    • Weather forecast in the closest to Johnstown admin centers

    Weather forecast in the closest towns to Johnstown

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    Frequently asked questions

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