Weather in Decorah in August

General weather information about Decorah

Average annual temperature is 10.4 °C

Absolute maximum temperature: 38.2 °C

Absolute minimum temperature: -25.4 °C

Number of sunny days: 191 days

Number of rainy days: 142 days

Number of snow days: 32 days

Look at detailed online map of Decorah

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

Decorah air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)6.48.716.825.931.632.634.038.234.129.817.412.1
Average daytime temperature (°C)-0.62.56.115.023.628.328.528.425.216.08.85.5
Average temperature (°C)-4.4-3.01.08.717.022.422.823.019.711.74.01.5
Average night temperature (°C)-7.6-7.3-3.03.811.016.717.518.315.38.10.4-1.1
Absolute minimum temperature (°C)-25.4-24.8-13.6-6.51.79.011.712.78.3-5.0-13.1-7.5

Decorah 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)9.410.511.913.414.715.315.013.912.511.09.79.0
Daylight minimum duration (h)9.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)4.06.96.88.811.812.312.211.59.67.07.14.2
Precipitation (mm)48426781563683388798730
Sunny days171513162116121214152317
Rainy days58101410141919161368
Snow days958000000316

Decorah - weather forecast by months

Decorah weather in januaryDecorah weather in februaryDecorah weather in marchDecorah weather in aprilDecorah weather in mayDecorah weather in juneDecorah weather in julyDecorah weather in augustDecorah weather in septemberDecorah weather in octoberDecorah weather in novemberDecorah weather in december

Best time to visit Decorah:

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

  • May — 11.8(h)
  • June — 12.3(h)
  • July — 12.2(h)
  • August — 11.5(h)

Months with the longest average daylight duration in Decorah:

  • June — 15.3(h)

The largest precipitation sum in Decorah is at

  • April — 81(mm)
  • July — 83(mm)
  • September — 87(mm)
  • October — 98(mm)

    • Weather forecast in the closest to Decorah admin centers

    Weather forecast in the closest towns to Decorah

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    Frequently asked questions

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