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

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)