Best year time to visit Charlestown

General weather information about Charlestown

Average annual temperature is 13.7 °C

Absolute maximum temperature: 43.0 °C

Absolute minimum temperature: -9.8 °C

Number of sunny days: 236 days

Number of rainy days: 122 days

Number of snow days: 7 days

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

Charlestown air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.812.816.732.837.937.740.043.034.527.217.215.8
Average daytime temperature (°C)7.48.612.618.629.031.236.034.426.819.29.67.0
Average temperature (°C)2.62.96.311.420.923.627.926.619.512.85.23.4
Average night temperature (°C)-0.7-1.21.45.613.716.319.619.613.57.51.91.0
Absolute minimum temperature (°C)-9.8-9.3-3.2-0.67.59.316.013.07.3-2.6-4.0-3.5

Charlestown monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.110.411.913.514.915.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)5.26.58.39.212.713.314.011.29.48.45.62.8
Precipitation (mm)171424336201317264852
Sunny days14169142427302721211716
Rainy days1410211673149101314
Snow days321000000001

Charlestown - weather forecast by months

Charlestown weather in januaryCharlestown weather in februaryCharlestown weather in marchCharlestown weather in aprilCharlestown weather in mayCharlestown weather in juneCharlestown weather in julyCharlestown weather in augustCharlestown weather in septemberCharlestown weather in octoberCharlestown weather in novemberCharlestown weather in december

Best time to visit Charlestown:

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

  • May — 12.7(h)
  • June — 13.3(h)
  • July — 14.0(h)
  • August — 11.2(h)

Months with the longest average daylight duration in Charlestown:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Charlestown is at

  • April — 33(mm)
  • November — 48(mm)
  • December — 52(mm)

    • Weather forecast in the closest to Charlestown admin centers

    Weather forecast in the closest towns to Charlestown

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    Frequently asked questions

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