Best year time to visit Joliet

General weather information about Joliet

Average annual temperature is 8.7 °C

Absolute maximum temperature: 36.5 °C

Absolute minimum temperature: -34.0 °C

Number of sunny days: 216 days

Number of rainy days: 110 days

Number of snow days: 39 days

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

Joliet air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)9.811.114.724.529.328.035.036.532.624.516.013.4
Average daytime temperature (°C)3.22.53.513.322.922.729.329.825.013.69.86.6
Average temperature (°C)-1.6-3.5-2.45.515.216.421.622.117.37.33.91.8
Average night temperature (°C)-5.0-8.2-6.6-0.88.211.113.815.210.52.8-0.6-1.7
Absolute minimum temperature (°C)-25.7-34.0-11.7-14.62.35.08.010.64.8-16.3-8.5-10.8

Joliet 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)9.210.411.913.514.915.615.314.112.510.99.58.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)6.56.97.49.811.911.513.311.310.37.67.06.3
Precipitation (mm)2240522038138814267239
Sunny days20191419125202022182423
Rainy days42551925111181055
Snow days7712600000313

Joliet - weather forecast by months

Joliet weather in januaryJoliet weather in februaryJoliet weather in marchJoliet weather in aprilJoliet weather in mayJoliet weather in juneJoliet weather in julyJoliet weather in augustJoliet weather in septemberJoliet weather in octoberJoliet weather in novemberJoliet weather in december

Best time to visit Joliet:

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

  • May — 11.9(h)
  • July — 13.3(h)

Months with the longest average daylight duration in Joliet:

  • June — 15.6(h)
  • July — 15.3(h)

The largest precipitation sum in Joliet is at

  • March — 52(mm)
  • June — 138(mm)
  • October — 72(mm)

    • Weather forecast in the closest to Joliet admin centers

    Weather forecast in the closest towns to Joliet

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    Frequently asked questions

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