Best year time to visit Sumter

General weather information about Sumter

Average annual temperature is 8.8 °C

Absolute maximum temperature: 37.1 °C

Absolute minimum temperature: -27.3 °C

Number of sunny days: 206 days

Number of rainy days: 127 days

Number of snow days: 32 days

Look at detailed online map of Sumter

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

Sumter air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)1.83.74.427.731.332.734.637.136.530.218.710.7
Average daytime temperature (°C)-4.6-2.80.411.123.529.028.528.325.915.08.34.6
Average temperature (°C)-7.9-8.1-4.15.617.123.122.622.620.110.53.00.4
Average night temperature (°C)-11.1-12.6-8.11.011.117.417.017.815.56.7-1.0-2.7
Absolute minimum temperature (°C)-24.9-27.3-16.8-9.70.610.413.012.17.9-5.6-12.5-9.8

Sumter 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)9.210.411.913.514.815.515.214.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)4.47.46.78.211.413.212.911.49.97.56.54.8
Precipitation (mm)505764142533782781221291267
Sunny days201717122016161816122220
Rainy days4551511141513141777
Snow days769300000214

Sumter - weather forecast by months

Sumter weather in januarySumter weather in februarySumter weather in marchSumter weather in aprilSumter weather in maySumter weather in juneSumter weather in julySumter weather in augustSumter weather in septemberSumter weather in octoberSumter weather in novemberSumter weather in december

Best time to visit Sumter:

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

  • May — 11.4(h)
  • June — 13.2(h)
  • July — 12.9(h)
  • August — 11.4(h)

Months with the longest average daylight duration in Sumter:

  • June — 15.5(h)

The largest precipitation sum in Sumter is at

  • April — 142(mm)
  • September — 122(mm)
  • October — 129(mm)

    • Weather forecast in the closest to Sumter admin centers

    Weather forecast in the closest towns to Sumter

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    Frequently asked questions

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