UTC Offset
UTC+02:00
Grignon, France Snapshot 2026
Where is Grignon?
Grignon, France
- Continent
- Europe
- Country
- France
- City
- Grignon
- Population
- 2K
- Coordinates
- 45.65°, 6.38°
Grignon is a city in France with a population of approximately 2K. Average temperatures range from -2°C (28°F) in January to 27°C (81°F) in August. The best time to visit is June, July, August, September, October.
Time in Grignon right now
Open full time & time zone page 07:28 28
Wednesday, July 1, 2026
IANA time zone
Europe/Paris
Daylight saving
DST in effect
CET / CEST
Next DST change
October 25
backward -1h
Live weather in Grignon
Daylight in Grignon today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 39m
Climate normals for Grignon
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April
Fair May
Wet June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / -2°C | 5°C / -6°C | 14days (176 mm) Wet | 5.7h Fair | 75% Muggy | 1.7 Low | Poor | View Details |
| February | 10°C / 0°C | 8°C / -3°C | 11days (111 mm) Wet | 7.2h Good | 75% Muggy | 2.7 Moderate | Poor | View Details |
| March | 12°C / 2°C | 11°C / 0°C | 14days (136 mm) Wet | 8.7h Good | 73% Muggy | 3.9 Moderate | Fair | View Details |
| April | 16°C / 6°C | 16°C / 3°C | 14days (116 mm) Wet | 10.5h Excellent | 72% Muggy | 5.5 High | Fair | View Details |
| May | 20°C / 9°C | 21°C / 8°C | 19days (182 mm) Wet | 10.5h Excellent | 78% Humid | 5.9 High | Wet | View Details |
| June best | 25°C / 15°C | 28°C / 15°C | 17days (135 mm) Wet | 11.8h Excellent | 77% Humid | 6.9 High | Excellent | View Details |
| July best | 27°C / 17°C | 30°C / 18°C | 13days (106 mm) Wet | 12.3h Excellent | 71% Muggy | 7 High | Excellent | View Details |
| August best | 27°C / 17°C | 30°C / 17°C | 11days (93 mm) Wet | 11.3h Excellent | 71% Muggy | 6.2 High | Excellent | View Details |
| September best | 23°C / 13°C | 24°C / 13°C | 13days (107 mm) Wet | 9.3h Good | 78% Humid | 4.8 Moderate | Excellent | View Details |
| October best | 19°C / 9°C | 19°C / 7°C | 12days (119 mm) Wet | 7.7h Good | 79% Humid | 3.2 Moderate | Good | View Details |
| November | 12°C / 3°C | 11°C / 0°C | 13days (153 mm) Wet | 6.2h Fair | 80% Humid | 2 Low | Poor | View Details |
| December | 9°C / -1°C | 7°C / -4°C | 13days (195 mm) Wet | 5.2h Fair | 76% Humid | 1.5 Low | Wet | View Details |
Monthly Temperatures
High Low
Line chart showing monthly temperatures. Jan: 7°C / -2°C . Feb: 10°C / 0°C . Mar: 12°C / 2°C . Apr: 16°C / 6°C . May: 20°C / 9°C . Jun: 25°C / 15°C . Jul: 27°C / 17°C . Aug: 27°C / 17°C . Sep: 23°C / 13°C . Oct: 19°C / 9°C . Nov: 12°C / 3°C . Dec: 9°C / -1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 176 mm. Feb: 111 mm. Mar: 136 mm. Apr: 116 mm. May: 182 mm. Jun: 135 mm. Jul: 106 mm. Aug: 93 mm. Sep: 107 mm. Oct: 119 mm. Nov: 153 mm. Dec: 195 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 75%. Feb: 75%. Mar: 73%. Apr: 72%. May: 78%. Jun: 77%. Jul: 71%. Aug: 71%. Sep: 78%. Oct: 79%. Nov: 80%. Dec: 76%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 7 km/h . Feb: 7 km/h . Mar: 7 km/h . Apr: 7 km/h . May: 7 km/h . Jun: 7 km/h . Jul: 7 km/h . Aug: 7 km/h . Sep: 6 km/h . Oct: 7 km/h . Nov: 7 km/h . Dec: 7 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 6. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 2.
Frequently Asked Questions
Grignon has a population of approximately 2K.
The best months to visit Grignon are June, July, August, September, October, when temperatures are pleasant and rainfall is lower.
Grignon receives approximately 1629mm of rainfall annually across 164 rainy days.
Grignon is located in France, in the Europe region.