July
July · June · August
88climate match
France · 1991–2020
Best time to visit
Chartres.
July leads for comfortable weather in Chartres: typically 25.8°C by day, 15°C at night, with 53 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high25.8°C
Typical low15°C
Rain in July53 mm
July
July · August · June
66climate match
May
May · September · October
87climate match
The weakest month is December, scoring 12 against July’s 88 — days reach only 7.7°C, 16° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
137.2° / 2°
Feb
198.5° / 2°
Mar
3612.5° / 4.1°
Apr
5216.2° / 6.4°
May
6719.8° / 9.9°
Jun
8623.2° / 13.1°
Jul
8825.8° / 15°
Aug
8625.7° / 14.6°
Sep
8021.5° / 11.5°
Oct
5616.5° / 8.7°
Nov
3010.9° / 5°
Dec
127.7° / 2.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 7.2°C | 2°C | 47 mm | 10.5 | 8 h 43 | 13 | Strong coverage |
| February | 8.5°C | 2°C | 43 mm | 9 | 10 h 06 | 19 | Strong coverage |
| March | 12.5°C | 4.1°C | 44 mm | 8.9 | 11 h 44 | 36 | Strong coverage |
| April | 16.2°C | 6.4°C | 44 mm | 8.6 | 13 h 36 | 52 | Strong coverage |
| May | 19.8°C | 9.9°C | 63 mm | 9.5 | 15 h 11 | 67 | Strong coverage |
| June | 23.2°C | 13.1°C | 56 mm | 8.4 | 16 h 05 | 86 | Strong coverage |
| July | 25.8°C | 15°C | 53 mm | 7 | 15 h 44 | 88 | Strong coverage |
| August | 25.7°C | 14.6°C | 58 mm | 7.7 | 14 h 20 | 86 | Strong coverage |
| September | 21.5°C | 11.5°C | 47 mm | 7.7 | 12 h 31 | 80 | Strong coverage |
| October | 16.5°C | 8.7°C | 53 mm | 9.3 | 10 h 43 | 56 | Strong coverage |
| November | 10.9°C | 5°C | 53 mm | 10.3 | 9 h 08 | 30 | Strong coverage |
| December | 7.7°C | 2.5°C | 60 mm | 11.6 | 8 h 20 | 12 | Strong coverage |
What has changed
Chartres runs +2.1°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.7
Feb
+1.8
Mar
+2.5
Apr
+2.6
May
+2.0
Jun
+2.7
Jul
+2.4
Aug
+2.4
Sep
+1.5
Oct
+1.5
Nov
+1.7
Dec
+2.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.5°C27 Jan 2003 | -16.8°C17 Jan 1985 | 32 mm21 Jan 1995 | 114 mm1984 · driest 4 mm in 1997 | 83 |
| February | 21.2°C25 Feb 2026 | -15.0°C2 Feb 1956 | 29 mm13 Feb 2002 | 104 mm1970 · driest 0 mm in 1959 | 83 |
| March | 25.3°C31 Mar 2021 | -9.4°C1 Mar 2005 | 28 mm20 Mar 1978 | 118 mm2001 · driest 1 mm in 1953 | 84 |
| April | 29.4°C16 Apr 1949 | -4.3°C16 Apr 1921 | 40 mm8 Apr 2022 | 117 mm1966 · driest 5 mm in 2007 | 84 |
| May | 35.0°C24 May 1922 | -1.3°C7 May 1957 | 56 mm10 May 2019 | 152 mm2016 · driest 4 mm in 2011 | 84 |
| June | 37.7°C22 Jun 2026 | 3.1°C1 Jun 2006 | 75 mm11 Jun 2018 | 144 mm1951 · driest 1 mm in 1976 | 83 |
| July | 41.9°C25 Jul 2019 | 6.7°C1 Jul 1922 | 64 mm6 Jul 2001 | 196 mm2001 · driest 3 mm in 2020 | 82 |
| August | 40.0°C12 Aug 2003 | 5.6°C31 Aug 1923 | 66 mm24 Aug 1987 | 139 mm2007 · driest 6 mm in 2012 | 82 |
| September | 35.4°C9 Sep 2023 | 1.7°C20 Sep 1952 | 41 mm13 Sep 2017 | 120 mm1993 · driest 1 mm in 1959 | 82 |
| October | 31.3°C4 Oct 1921 | -3.9°C30 Oct 1955 | 58 mm9 Oct 2024 | 146 mm1960 · driest 6 mm in 1978 | 82 |
| November | 21.8°C7 Nov 2015 | -9.6°C28 Nov 1921 | 38 mm19 Nov 1963 | 118 mm1963 · driest 8 mm in 1978 | 82 |
| December | 17.3°C16 Dec 1989 | -13.3°C29 Dec 1964 | 30 mm5 Dec 1988 | 125 mm1999 · driest 5 mm in 1963 | 82 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 10 | <1 |
| February | 0 | 0 | 9 | <1 |
| March | 0 | 0 | 4 | <1 |
| April | 1 | 0 | 1 | 1 |
| May | 4 | <1 | 0 | 2 |
| June | 10 | 2 | 0 | 2 |
| July | 17 | 5 | 0 | 2 |
| August | 16 | 5 | 0 | 2 |
| September | 5 | <1 | 0 | 1 |
| October | <1 | 0 | <1 | 1 |
| November | 0 | 0 | 3 | 1 |
| December | 0 | 0 | 9 | 1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 96); on 2011–2025 it is June (92). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 34% | 3% | 44% | 3.5–9.2°C |
| February | <1% | 34% | 3% | 45% | 5.0–11.1°C |
| March | 3% | 30% | 2% | 40% | 8.8–14.6°C |
| April | 14% | 28% | 3% | 36% | 13.0–17.5°C |
| May | 33% | 31% | 5% | 39% | 16.6–21.9°C |
| June | 55% | 28% | 5% | 33% | 20.0–25.1°C |
| July | 71% | 24% | 5% | 25% | 22.4–27.8°C |
| August | 70% | 25% | 5% | 29% | 21.9–27.3°C |
| September | 48% | 27% | 5% | 34% | 18.7–24.0°C |
| October | 13% | 28% | 5% | 36% | 14.1–18.7°C |
| November | <1% | 34% | 4% | 44% | 8.2–12.7°C |
| December | 0% | 34% | 4% | 47% | 5.0–9.4°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 3026467
- NOAA station
- FRM00007149 · ORLY
- Station distance
- 72.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 48.45°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.