September 10 in Grignon, through the years

Typical high: 23.7°. Hottest: 34.2° (2023). Coldest night: 10.6° (2025).

YEAR	HIGH	LOW	RAIN
2025	20.5°	10.6°	2.9 mm
2024	17.4°	11.3°	0 mm
2023	34.2°	19.4°	0 mm
2022	20.3°	14.6°	1 mm
2021	23.9°	18.2°	1.9 mm
2020	26.1°	15.2°	0.1 mm

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