Best year time to visit Sweet Grass

General weather information about Sweet Grass

Average annual temperature is 6.5 °C

Absolute maximum temperature: 35.1 °C

Absolute minimum temperature: -31.7 °C

Number of sunny days: 219 days

Number of rainy days: 96 days

Number of snow days: 50 days

Look at detailed online map of Sweet Grass

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

Sweet Grass air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.65.23.721.227.628.933.635.129.023.013.313.6
Average daytime temperature (°C)-1.3-1.2-2.410.020.422.127.427.121.311.16.75.5
Average temperature (°C)-5.0-5.5-6.93.213.816.119.819.514.55.61.60.6
Average night temperature (°C)-8.0-8.9-10.7-2.37.710.612.813.39.11.7-1.9-2.5
Absolute minimum temperature (°C)-23.4-31.7-16.7-14.92.02.99.27.73.4-11.5-8.1-8.1

Sweet Grass 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)8.810.211.913.715.316.115.714.312.610.89.28.3
Daylight minimum duration (h)8.09.010.012.014.015.015.013.011.09.08.08.0
Sunshine mean duration (h)5.56.77.59.911.612.614.112.010.06.46.35.8
Precipitation (mm)122123145362162842412113
Sunny days191715211415192218161924
Rainy days20251715129121192
Snow days101114400000425

Sweet Grass - weather forecast by months

Sweet Grass weather in januarySweet Grass weather in februarySweet Grass weather in marchSweet Grass weather in aprilSweet Grass weather in maySweet Grass weather in juneSweet Grass weather in julySweet Grass weather in augustSweet Grass weather in septemberSweet Grass weather in octoberSweet Grass weather in novemberSweet Grass weather in december

Best time to visit Sweet Grass:

The best time to visit Sweet Grass during the most sunny months:

  • May — 11.6(h)
  • June — 12.6(h)
  • July — 14.1(h)
  • August — 12.0(h)

Months with the longest average daylight duration in Sweet Grass:

  • June — 16.1(h)
  • July — 15.7(h)

The largest precipitation sum in Sweet Grass is at

  • May — 53(mm)
  • June — 62(mm)
  • September — 42(mm)
  • October — 41(mm)

    • Weather forecast in the closest to Sweet Grass admin centers

    Weather forecast in the closest towns to Sweet Grass

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    Frequently asked questions

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