Best year time to visit Grignon

General weather information about Grignon

Average annual temperature is 12.6 °C

Absolute maximum temperature: 34.4 °C

Absolute minimum temperature: -6.7 °C

Number of sunny days: 135 days

Number of rainy days: 225 days

Number of snow days: 5 days

Look at detailed online map of Grignon

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

Grignon air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	16.1	16.3	19.9	19.9	25.7	30.8	34.4	33.9	32.5	29.0	15.8	12.7
Average daytime temperature (°C)	6.8	9.3	12.0	13.5	19.3	26.1	25.0	24.8	25.8	19.6	10.4	8.4
Average temperature (°C)	4.7	5.0	7.8	9.2	14.7	20.8	20.1	20.0	20.1	14.6	7.8	6.2
Average night temperature (°C)	2.4	1.8	3.9	5.0	10.0	15.0	15.1	15.7	15.2	10.5	5.2	3.9
Absolute minimum temperature (°C)	-6.7	-4.3	-3.3	-1.5	6.2	11.3	10.9	9.7	6.4	5.0	-2.7	-4.5

Grignon monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	10.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	9.0	8.0
Daylight mean duration (h)	8.9	10.3	11.9	13.6	15.1	15.9	15.5	14.2	12.6	10.9	9.3	8.5
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	15.0	13.0	11.0	10.0	8.0	8.0
Sunshine mean duration (h)	2.2	5.8	6.6	7.4	10.1	13.3	11.4	10.0	10.4	6.5	3.4	2.0
Precipitation (mm)	81	15	117	85	51	56	81	69	44	133	133	124
Sunny days	9	16	9	7	10	18	11	10	20	14	4	7
Rainy days	17	12	22	23	21	12	20	21	10	17	26	24
Snow days	5	0	0	0	0	0	0	0	0	0	0	0

Grignon - weather forecast by months

Grignon weather in january Grignon weather in february Grignon weather in march Grignon weather in april Grignon weather in may Grignon weather in june Grignon weather in july Grignon weather in august Grignon weather in september Grignon weather in october Grignon weather in november Grignon weather in december

Best time to visit Grignon:

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

May — 10.1(h)
June — 13.3(h)
July — 11.4(h)
August — 10.0(h)
September — 10.4(h)

Months with the longest average daylight duration in Grignon:

June — 15.9(h)
July — 15.5(h)

The largest precipitation sum in Grignon is at

March — 117(mm)

October — 133(mm)

November — 133(mm)

December — 124(mm)

Weather forecast in the closest to Grignon admin centers