June
June · September · August
United States · 1991–2020
June leads for comfortable weather in Geneva: typically 23.4°C by day, 4.2°C at night, with 16 mm of rain. Based on measured 1991–2020 NOAA station history.
June · September · August
August · July · June
May · June · September
The weakest month is January, scoring 5 against June’s 78 — days reach only 5.1°C, 19° 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 | 5.1°C | -5.7°C | 50 mm | 6.4 | 9 h 11 | 5 | Strong coverage |
| February | 6.8°C | -5°C | 27 mm | 4.5 | 10 h 22 | 6 | Strong coverage |
| March | 10.5°C | -3.3°C | 25 mm | 4.9 | 11 h 46 | 21 | Strong coverage |
| April | 14.1°C | -1.5°C | 22 mm | 4.4 | 13 h 24 | 36 | Strong coverage |
| May | 19.3°C | 1.8°C | 26 mm | 4.9 | 14 h 46 | 59 | Strong coverage |
| June | 23.4°C | 4.2°C | 16 mm | 3.2 | 15 h 31 | 78 | Strong coverage |
| July | 30°C | 6.8°C | 8 mm | 1.3 | 15 h 13 | 66 | Strong coverage |
| August | 29.3°C | 6.3°C | 11 mm | 1.8 | 14 h 02 | 67 | Strong coverage |
| September | 24.5°C | 2.6°C | 9 mm | 1.6 | 12 h 28 | 76 | Strong coverage |
| October | 16.5°C | -1.3°C | 23 mm | 3.4 | 10 h 54 | 45 | Strong coverage |
| November | 8.7°C | -3.7°C | 41 mm | 5.1 | 9 h 32 | 13 | Strong coverage |
| December | 4.2°C | -6.2°C | 62 mm | 7.2 | 8 h 51 | 5 | Good coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C29 Jan 1971 | -33.3°C22 Jan 1962 | 51 mm10 Jan 1989 | 133 mm1970 · driest 0 mm in 2022 | 62 |
| February | 22.2°C24 Feb 1995 | -30.0°C5 Feb 1989 | 58 mm18 Feb 1986 | 161 mm2014 · driest 0 mm in 2022 | 61 |
| March | 25.6°C29 Mar 1966 | -22.8°C1 Mar 2019 | 51 mm6 Mar 2019 | 78 mm1983 · driest 0 mm in 2004 | 62 |
| April | 30.6°C28 Apr 1987 | -12.8°C13 Apr 1968 | 39 mm28 Apr 1990 | 79 mm2019 · driest 0 mm in 2024 | 61 |
| May | 36.7°C31 May 1986 | -11.7°C25 May 1975 | 28 mm19 May 1981 | 90 mm1998 · driest 1 mm in 2017 | 59 |
| June | 42.8°C30 Jun 2021 | -8.9°C13 Jun 2008 | 34 mm12 Jun 1982 | 65 mm2009 · driest 0 mm in 1987 | 61 |
| July | 42.8°C2 Jul 2021 | -4.4°C5 Jul 1977 | 32 mm18 Jul 1987 | 62 mm1987 · driest 0 mm in 2018 | 62 |
| August | 41.1°C7 Aug 1972 | -3.9°C24 Aug 1992 | 31 mm31 Aug 2004 | 59 mm1999 · driest 0 mm in 1988 | 62 |
| September | 39.4°C2 Sep 1998 | -9.4°C30 Sep 1985 | 35 mm20 Sep 1982 | 52 mm1982 · driest 0 mm in 1999 | 62 |
| October | 33.3°C4 Oct 1980 | -20.0°C31 Oct 2002 | 76 mm19 Oct 1984 | 121 mm1984 · driest 0 mm in 1987 | 63 |
| November | 22.8°C2 Nov 1959 | -26.7°C24 Nov 1993 | 59 mm22 Nov 1961 | 158 mm1984 · driest 4 mm in 1979 | 63 |
| December | 18.9°C1 Dec 2021 | -33.3°C21 Dec 1990 | 86 mm7 Dec 2005 | 311 mm1964 · driest 2 mm in 2017 | 63 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 1 | 3 |
| February | 0 | 0 | 23 | <1 | 3 |
| March | <1 | 0 | 24 | <1 | 1 |
| April | 1 | 0 | 20 | <1 | <1 |
| May | 6 | 1 | 11 | <1 | 0 |
| June | 13 | 4 | 5 | <1 | 0 |
| July | 26 | 18 | 1 | <1 | 0 |
| August | 26 | 16 | 1 | <1 | 0 |
| September | 15 | 6 | 8 | <1 | 0 |
| October | 2 | <1 | 20 | <1 | <1 |
| November | 0 | 0 | 23 | 1 | <1 |
| December | 0 | 0 | 26 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 23% | 6% | 26% | 2.6–7.3°C |
| February | <1% | 20% | 3% | 20% | 4.6–10.5°C |
| March | 4% | 19% | 2% | 17% | 8.5–13.5°C |
| April | 17% | 15% | 1% | 12% | 11.1–17.1°C |
| May | 42% | 14% | 2% | 9% | 15.9–21.7°C |
| June | 69% | 10% | 1% | 4% | 21.2–26.9°C |
| July | 93% | 5% | <1% | 2% | 27.0–31.8°C |
| August | 90% | 7% | <1% | 5% | 26.0–30.8°C |
| September | 73% | 7% | <1% | 3% | 21.0–27.0°C |
| October | 33% | 12% | 2% | 11% | 14.6–19.5°C |
| November | 1% | 24% | 4% | 29% | 5.9–11.3°C |
| December | 0% | 26% | 6% | 24% | 2.2–7.0°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