Best year time to visit Illois

General weather information about Illois

Average annual temperature is 11.5 °C

Absolute maximum temperature: 31.7 °C

Absolute minimum temperature: -4.1 °C

Number of sunny days: 119 days

Number of rainy days: 244 days

Number of snow days: 2 days

Look at detailed online map of Illois

* Weather data for Illois France is based on climate observations for 2026 year

Illois air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.611.517.516.322.529.928.727.631.725.215.112.7
Average daytime temperature (°C)7.18.310.412.016.823.821.721.523.217.010.18.8
Average temperature (°C)4.95.27.38.212.418.617.617.518.513.37.96.7
Average night temperature (°C)2.72.34.34.58.113.313.713.814.310.15.84.9
Absolute minimum temperature (°C)-3.6-3.0-2.6-0.64.38.510.611.27.93.20.6-4.1

Illois monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.710.111.913.815.416.215.814.412.610.89.18.2
Daylight minimum duration (h)8.09.010.012.014.016.015.013.011.09.08.08.0
Sunshine mean duration (h)3.15.45.48.310.912.510.910.49.56.83.82.8
Precipitation (mm)75710785475812376468912063
Sunny days1113691519210141316
Rainy days201425211611292116182924
Snow days010000000001

Illois - weather forecast by months

Illois weather in januaryIllois weather in februaryIllois weather in marchIllois weather in aprilIllois weather in mayIllois weather in juneIllois weather in julyIllois weather in augustIllois weather in septemberIllois weather in octoberIllois weather in novemberIllois weather in december

Best time to visit Illois:

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

  • May — 10.9(h)
  • June — 12.5(h)
  • July — 10.9(h)
  • August — 10.4(h)
  • September — 9.5(h)

Months with the longest average daylight duration in Illois:

  • May — 15.4(h)
  • June — 16.2(h)
  • July — 15.8(h)

The largest precipitation sum in Illois is at

  • March — 107(mm)
  • July — 123(mm)
  • November — 120(mm)

    • Weather forecast in the closest to Illois admin centers

    Weather forecast in the closest towns to Illois

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    Frequently asked questions

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