Best year time to visit Winnetka

General weather information about Winnetka

Average annual temperature is 10.8 °C

Absolute maximum temperature: 37.6 °C

Absolute minimum temperature: -19.2 °C

Number of sunny days: 177 days

Number of rainy days: 171 days

Number of snow days: 17 days

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

Winnetka air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.115.220.926.028.930.132.337.634.527.819.813.0
Average daytime temperature (°C)3.15.36.715.418.823.826.726.123.016.89.76.3
Average temperature (°C)-0.40.22.49.513.718.722.222.019.412.85.33.3
Average night temperature (°C)-2.9-3.5-0.74.79.314.718.318.516.09.71.91.1
Absolute minimum temperature (°C)-19.2-18.5-11.0-2.22.68.914.814.411.3-2.2-10.1-7.4

Winnetka monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.013.015.015.015.014.013.011.010.09.0
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)3.27.97.09.210.612.111.810.78.26.37.03.7
Precipitation (mm)59937179474918189122924374
Sunny days111810142219121311122213
Rainy days129171691119181918716
Snow days814000000112

Winnetka - weather forecast by months

Winnetka weather in januaryWinnetka weather in februaryWinnetka weather in marchWinnetka weather in aprilWinnetka weather in mayWinnetka weather in juneWinnetka weather in julyWinnetka weather in augustWinnetka weather in septemberWinnetka weather in octoberWinnetka weather in novemberWinnetka weather in december

Best time to visit Winnetka:

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

  • May — 10.6(h)
  • June — 12.1(h)
  • July — 11.8(h)
  • August — 10.7(h)

The largest precipitation sum in Winnetka is at

  • July — 181(mm)
  • September — 122(mm)

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    Weather forecast in the closest towns to Winnetka

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    Frequently asked questions

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