Best year time to visit Grand Detour

General weather information about Grand Detour

Average annual temperature is 11.4 °C

Absolute maximum temperature: 36.4 °C

Absolute minimum temperature: -24.3 °C

Number of sunny days: 195 days

Number of rainy days: 153 days

Number of snow days: 17 days

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

Grand Detour air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.014.120.725.732.233.334.636.434.027.918.814.7
Average daytime temperature (°C)2.34.98.016.723.528.928.528.324.916.99.56.5
Average temperature (°C)-1.6-0.52.710.017.022.423.122.819.712.44.72.9
Average night temperature (°C)-4.3-4.9-1.24.411.016.018.018.015.58.70.70.4
Absolute minimum temperature (°C)-24.3-22.3-12.0-1.61.38.013.710.99.0-2.1-11.7-8.3

Grand Detour monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.510.611.913.414.615.214.913.812.511.19.89.2
Daylight minimum duration (h)9.010.011.012.014.015.014.013.011.010.09.09.0
Sunshine mean duration (h)3.77.56.89.311.312.512.011.19.07.47.14.2
Precipitation (mm)777710099512210553125902866
Sunny days121614142219151515152117
Rainy days119151691116161515614
Snow days832000000130

Grand Detour - weather forecast by months

Grand Detour weather in januaryGrand Detour weather in februaryGrand Detour weather in marchGrand Detour weather in aprilGrand Detour weather in mayGrand Detour weather in juneGrand Detour weather in julyGrand Detour weather in augustGrand Detour weather in septemberGrand Detour weather in octoberGrand Detour weather in novemberGrand Detour weather in december

Best time to visit Grand Detour:

The best time to visit Grand Detour during the most sunny months:

  • May — 11.3(h)
  • June — 12.5(h)
  • July — 12.0(h)
  • August — 11.1(h)

The largest precipitation sum in Grand Detour is at

  • March — 100(mm)
  • April — 99(mm)
  • July — 105(mm)
  • September — 125(mm)

    • Weather forecast in the closest to Grand Detour admin centers

    Weather forecast in the closest towns to Grand Detour

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    Frequently asked questions

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