Best year time to visit Sullivan (historical)

General weather information about Sullivan (historical)

Average annual temperature is 6.7 °C

Absolute maximum temperature: 34.7 °C

Absolute minimum temperature: -35.7 °C

Number of sunny days: 197 days

Number of rainy days: 108 days

Number of snow days: 60 days

Look at detailed online map of Sullivan (historical)

* Weather data for Sullivan (historical) United States is based on climate observations for 2026 year

Sullivan (historical) air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.55.58.622.128.328.834.534.727.523.611.112.0
Average daytime temperature (°C)0.90.30.810.221.222.827.127.420.611.65.94.8
Average temperature (°C)-4.1-4.6-4.93.914.016.019.319.313.75.51.20.4
Average night temperature (°C)-7.8-8.4-9.7-1.47.410.111.812.58.11.3-2.2-3.2
Absolute minimum temperature (°C)-27.8-35.7-21.6-9.41.53.07.47.51.9-16.2-7.0-8.9

Sullivan (historical) monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.810.211.913.715.316.115.714.412.610.89.28.3
Daylight minimum duration (h)8.09.010.012.014.015.015.013.011.09.08.08.0
Sunshine mean duration (h)5.66.18.29.511.512.013.711.59.26.26.05.1
Precipitation (mm)173227355547153417362323
Sunny days201612141210172318171820
Rainy days103619201481210114
Snow days1012161000000417

Sullivan (historical) - weather forecast by months

Sullivan (historical) weather in januarySullivan (historical) weather in februarySullivan (historical) weather in marchSullivan (historical) weather in aprilSullivan (historical) weather in maySullivan (historical) weather in juneSullivan (historical) weather in julySullivan (historical) weather in augustSullivan (historical) weather in septemberSullivan (historical) weather in octoberSullivan (historical) weather in novemberSullivan (historical) weather in december

Best time to visit Sullivan (historical):

The best time to visit Sullivan (historical) during the most sunny months:

  • May — 11.5(h)
  • June — 12.0(h)
  • July — 13.7(h)
  • August — 11.5(h)

Months with the longest average daylight duration in Sullivan (historical):

  • June — 16.1(h)
  • July — 15.7(h)

The largest precipitation sum in Sullivan (historical) is at

  • May — 55(mm)
  • June — 47(mm)

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    Frequently asked questions

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