Weather in Castleton in December

General weather information about Castleton

Average annual temperature is 12.8 °C

Absolute maximum temperature: 34.4 °C

Absolute minimum temperature: -10.9 °C

Number of sunny days: 181 days

Number of rainy days: 175 days

Number of snow days: 9 days

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* Weather data for Castleton United States is based on climate observations for 2026 year

Castleton air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)17.519.921.027.530.432.134.433.731.729.124.615.4
Average daytime temperature (°C)6.110.211.018.323.527.929.527.925.419.112.38.5
Average temperature (°C)2.54.05.111.417.321.724.022.819.913.96.64.4
Average night temperature (°C)-0.4-0.20.75.911.516.019.118.014.99.82.41.2
Absolute minimum temperature (°C)-10.0-10.9-7.6-1.22.510.715.212.29.9-3.1-8.7-6.9

Castleton monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.415.014.713.712.511.210.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.77.36.78.710.611.112.310.79.77.27.84.3
Precipitation (mm)139801878858481078144892849
Sunny days9161716161671518152412
Rainy days16111314151424161216618
Snow days611000000001

Castleton - weather forecast by months

Castleton weather in januaryCastleton weather in februaryCastleton weather in marchCastleton weather in aprilCastleton weather in mayCastleton weather in juneCastleton weather in julyCastleton weather in augustCastleton weather in septemberCastleton weather in octoberCastleton weather in novemberCastleton weather in december

Best time to visit Castleton:

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

  • May — 10.6(h)
  • June — 11.1(h)
  • July — 12.3(h)
  • August — 10.7(h)

The largest precipitation sum in Castleton is at

  • January — 139(mm)
  • March — 187(mm)
  • July — 107(mm)

    • Weather forecast in the closest to Castleton admin centers

    Weather forecast in the closest towns to Castleton

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    Frequently asked questions

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