Weather in Grignon in December

General weather information about Grignon

Average annual temperature is 13.0 °C

Absolute maximum temperature: 32.8 °C

Absolute minimum temperature: -5.1 °C

Number of sunny days: 136 days

Number of rainy days: 228 days

Number of snow days: 1 day

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

Grignon air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.416.020.420.825.631.631.031.732.827.716.513.9
Average daytime temperature (°C)7.59.412.314.119.626.324.724.025.219.211.59.3
Average temperature (°C)5.55.08.49.914.920.920.119.819.914.68.87.2
Average night temperature (°C)3.21.54.65.610.115.215.215.914.810.45.94.9
Absolute minimum temperature (°C)-3.9-5.1-2.2-1.66.210.910.910.46.54.3-0.7-3.2

Grignon monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.015.014.013.011.09.08.0
Daylight mean duration (h)8.910.211.913.715.216.015.614.312.610.89.38.5
Daylight minimum duration (h)8.09.011.012.014.015.015.013.011.010.08.08.0
Sunshine mean duration (h)2.56.46.67.811.412.611.29.59.96.94.62.3
Precipitation (mm)7614775362795488551038562
Sunny days616910161997181439
Rainy days251222201511222412172721
Snow days000000000001

Grignon - weather forecast by months

Grignon weather in januaryGrignon weather in februaryGrignon weather in marchGrignon weather in aprilGrignon weather in mayGrignon weather in juneGrignon weather in julyGrignon weather in augustGrignon weather in septemberGrignon weather in octoberGrignon weather in novemberGrignon weather in december

Best time to visit Grignon:

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

  • May — 11.4(h)
  • June — 12.6(h)
  • July — 11.2(h)
  • September — 9.9(h)

Months with the longest average daylight duration in Grignon:

  • June — 16.0(h)
  • July — 15.6(h)

The largest precipitation sum in Grignon is at

  • August — 88(mm)
  • October — 103(mm)
  • November — 85(mm)

    • Weather forecast in the closest to Grignon admin centers

    Weather forecast in the closest towns to Grignon

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    Frequently asked questions

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