September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Paris: typically 26.8°C by day, 12.9°C at night, with 92 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 76 — days reach only 5.5°C, 18° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 5.5°C | -4.9°C | 85 mm | 8.2 | 9 h 47 | 5 | Strong coverage |
| February | 7.9°C | -3.8°C | 85 mm | 7.2 | 10 h 43 | 5 | Strong coverage |
| March | 12.8°C | -0.1°C | 114 mm | 9.6 | 11 h 50 | 19 | Strong coverage |
| April | 19.5°C | 5.3°C | 119 mm | 10.2 | 13 h 08 | 50 | Strong coverage |
| May | 24.3°C | 11.3°C | 128 mm | 10.4 | 14 h 13 | 73 | Strong coverage |
| June | 28.5°C | 15.8°C | 119 mm | 9.7 | 14 h 48 | 66 | Strong coverage |
| July | 30.5°C | 18.5°C | 125 mm | 8.5 | 14 h 35 | 55 | Strong coverage |
| August | 30.1°C | 17.2°C | 79 mm | 7.1 | 13 h 39 | 66 | Strong coverage |
| September | 26.8°C | 12.9°C | 92 mm | 6.3 | 12 h 23 | 76 | Strong coverage |
| October | 20.6°C | 6.4°C | 89 mm | 6.6 | 11 h 08 | 62 | Strong coverage |
| November | 13.3°C | 0.8°C | 87 mm | 7.8 | 10 h 03 | 27 | Good coverage |
| December | 7.8°C | -2.5°C | 101 mm | 8.7 | 9 h 31 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.3°C23 Jan 1999 | -36.1°C19 Jan 1994 | 62 mm3 Jan 2023 | 147 mm1999 · driest 8 mm in 2003 | 43 |
| February | 26.1°C21 Feb 2018 | -30.6°C21 Feb 2015 | 112 mm18 Feb 2000 | 244 mm2018 · driest 18 mm in 2002 | 44 |
| March | 29.4°C21 Mar 2012 | -21.7°C7 Mar 2015 | 60 mm1 Mar 2017 | 203 mm2002 · driest 33 mm in 1983 | 44 |
| April | 32.8°C26 Apr 1986 | -10.0°C1 Apr 1987 | 81 mm29 Apr 2014 | 364 mm2011 · driest 23 mm in 1985 | 44 |
| May | 33.9°C28 May 2012 | -5.0°C8 May 1989 | 104 mm19 May 2020 | 257 mm2004 · driest 17 mm in 1987 | 44 |
| June | 38.9°C30 Jun 2012 | 2.8°C20 Jun 2003 | 69 mm25 Jun 2002 | 220 mm2019 · driest 17 mm in 1988 | 45 |
| July | 40.6°C7 Jul 2012 | 7.8°C15 Jul 2000 | 87 mm4 Jul 2019 | 295 mm2015 · driest 20 mm in 1983 | 46 |
| August | 41.1°C21 Aug 1983 | 3.3°C29 Aug 1986 | 62 mm30 Aug 2005 | 192 mm1979 · driest 14 mm in 2002 | 45 |
| September | 37.8°C11 Sep 1983 | 0.6°C23 Sep 1982 | 102 mm22 Sep 1979 | 341 mm2018 · driest 17 mm in 1995 | 45 |
| October | 35.0°C4 Oct 2019 | -7.8°C29 Oct 2005 | 87 mm23 Oct 2007 | 199 mm1983 · driest 4 mm in 2024 | 45 |
| November | 28.3°C3 Nov 2016 | -12.2°C13 Nov 2019 | 64 mm6 Nov 2018 | 184 mm2018 · driest 12 mm in 1991 | 43 |
| December | 25.0°C3 Dec 1982 | -29.4°C23 Dec 1989 | 61 mm16 Dec 2000 | 264 mm1990 · driest 32 mm in 1985 | 44 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 3 | <1 |
| February | <1 | 0 | 22 | 3 | <1 |
| March | 1 | 0 | 17 | 4 | <1 |
| April | 6 | <1 | 5 | 4 | 0 |
| May | 16 | 4 | <1 | 4 | 0 |
| June | 26 | 12 | 0 | 4 | 0 |
| July | 30 | 19 | 0 | 4 | 0 |
| August | 29 | 17 | 0 | 3 | 0 |
| September | 20 | 9 | 0 | 3 | 0 |
| October | 8 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 14 | 3 | 0 |
| December | 0 | 0 | 21 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 10% | 31% | 1.8–8.8°C |
| February | 3% | 29% | 10% | 34% | 3.6–11.6°C |
| March | 13% | 32% | 12% | 39% | 10.0–16.0°C |
| April | 32% | 32% | 12% | 40% | 16.9–21.9°C |
| May | 55% | 31% | 12% | 39% | 21.9–26.6°C |
| June | 69% | 28% | 12% | 33% | 27.2–30.1°C |
| July | 72% | 27% | 12% | 30% | 28.7–32.6°C |
| August | 76% | 23% | 10% | 23% | 28.7–32.3°C |
| September | 74% | 21% | 9% | 20% | 25.0–29.6°C |
| October | 46% | 20% | 7% | 20% | 18.8–22.6°C |
| November | 13% | 27% | 10% | 29% | 10.2–16.2°C |
| December | 1% | 28% | 11% | 33% | 4.2–11.2°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