Best year time to visit Glen Ullin

General weather information about Glen Ullin

Average annual temperature is 6.8 °C

Absolute maximum temperature: 35.9 °C

Absolute minimum temperature: -33.3 °C

Number of sunny days: 227 days

Number of rainy days: 97 days

Number of snow days: 41 days

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

Glen Ullin air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.77.02.824.228.831.935.235.934.728.413.412.9
Average daytime temperature (°C)-3.2-1.5-4.48.422.626.628.327.823.612.36.13.5
Average temperature (°C)-7.6-7.1-9.12.115.820.921.521.317.26.90.7-1.4
Average night temperature (°C)-10.8-11.9-12.6-2.69.414.915.515.912.02.9-3.4-4.9
Absolute minimum temperature (°C)-26.3-33.3-22.0-16.5-0.89.78.611.27.6-16.8-13.8-10.8

Glen Ullin 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)9.010.311.913.615.015.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.97.27.79.911.312.613.310.89.97.37.45.6
Precipitation (mm)101743157796264511256327
Sunny days241715211613202017162523
Rainy days121715171111131234
Snow days6915200000324

Glen Ullin - weather forecast by months

Glen Ullin weather in januaryGlen Ullin weather in februaryGlen Ullin weather in marchGlen Ullin weather in aprilGlen Ullin weather in mayGlen Ullin weather in juneGlen Ullin weather in julyGlen Ullin weather in augustGlen Ullin weather in septemberGlen Ullin weather in octoberGlen Ullin weather in novemberGlen Ullin weather in december

Best time to visit Glen Ullin:

The best time to visit Glen Ullin during the most sunny months:

  • May — 11.3(h)
  • June — 12.6(h)
  • July — 13.3(h)

Months with the longest average daylight duration in Glen Ullin:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in Glen Ullin is at

  • May — 77(mm)
  • June — 96(mm)
  • September — 112(mm)
  • October — 56(mm)

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    Frequently asked questions

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