September
September · June · May
United States · 1991–2020
September leads for comfortable weather in French Corner: typically 26.5°C by day, 9.1°C at night, with 11 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
May · October · September
The weakest month is January, scoring 5 against September’s 81 — days reach only 3.5°C, 20° 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 | 3.5°C | -4.7°C | 44 mm | 9.1 | 9 h 13 | 5 | Strong coverage |
| February | 7.8°C | -2.9°C | 32 mm | 7.1 | 10 h 23 | 11 | Strong coverage |
| March | 13.3°C | 0°C | 40 mm | 8.2 | 11 h 47 | 32 | Strong coverage |
| April | 17.1°C | 2.2°C | 31 mm | 6.7 | 13 h 23 | 51 | Strong coverage |
| May | 22.4°C | 6.5°C | 38 mm | 6.8 | 14 h 44 | 76 | Strong coverage |
| June | 27.1°C | 10.2°C | 21 mm | 4 | 15 h 28 | 80 | Strong coverage |
| July | 33.2°C | 14.3°C | 6 mm | 1.5 | 15 h 11 | 68 | Strong coverage |
| August | 32.4°C | 13.7°C | 4 mm | 1.1 | 14 h 00 | 70 | Strong coverage |
| September | 26.5°C | 9.1°C | 11 mm | 2.5 | 12 h 27 | 81 | Strong coverage |
| October | 18.5°C | 3.4°C | 20 mm | 4.6 | 10 h 55 | 60 | Strong coverage |
| November | 9.5°C | -1.5°C | 34 mm | 6.8 | 9 h 34 | 19 | Strong coverage |
| December | 3.8°C | -4.6°C | 54 mm | 9.6 | 8 h 54 | 5 | Strong 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 | 17.2°C16 Jan 1909 | -32.8°C21 Jan 1930 | 34 mm15 Jan 1956 | 139 mm1970 · driest 5 mm in 2007 | 120 |
| February | 21.7°C28 Feb 1940 | -26.7°C2 Feb 1979 | 41 mm16 Feb 1976 | 129 mm2019 · driest 1 mm in 1955 | 119 |
| March | 28.3°C21 Mar 2026 | -14.4°C18 Mar 1965 | 28 mm25 Mar 1948 | 107 mm1993 · driest 1 mm in 1994 | 119 |
| April | 34.4°C25 Apr 1910 | -11.1°C9 Apr 1933 | 34 mm5 Apr 2024 | 120 mm2026 · driest 0 mm in 1977 | 119 |
| May | 37.8°C25 May 1928 | -5.0°C5 May 1982 | 40 mm29 May 1990 | 119 mm1998 · driest 0 mm in 1974 | 118 |
| June | 43.3°C19 Jun 1940 | -1.1°C4 Jun 1962 | 43 mm3 Jun 1948 | 90 mm2020 · driest 0 mm in 1974 | 119 |
| July | 43.9°C16 Jul 1925 | 1.7°C2 Jul 1955 | 31 mm25 Jul 1913 | 59 mm1913 · driest 0 mm in 1953 | 120 |
| August | 42.8°C4 Aug 1961 | -0.6°C28 Aug 1960 | 26 mm9 Aug 1930 | 76 mm1968 · driest 0 mm in 1940 | 117 |
| September | 39.4°C3 Sep 1931 | -6.1°C26 Sep 1908 | 63 mm14 Sep 1959 | 125 mm1959 · driest 0 mm in 1974 | 118 |
| October | 35.0°C2 Oct 1992 | -11.1°C30 Oct 2019 | 28 mm6 Oct 1925 | 91 mm1956 · driest 0 mm in 1987 | 118 |
| November | 24.4°C2 Nov 1924 | -25.0°C15 Nov 1955 | 28 mm2 Nov 2014 | 103 mm1926 · driest 0 mm in 1956 | 118 |
| December | 23.3°C11 Dec 1939 | -32.8°C25 Dec 1924 | 45 mm16 Dec 2009 | 133 mm2010 · driest 0 mm in 1976 | 120 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 2 |
| February | 0 | 0 | 23 | <1 | 1 |
| March | <1 | 0 | 17 | <1 | <1 |
| April | 2 | <1 | 10 | <1 | <1 |
| May | 11 | 3 | 2 | <1 | 0 |
| June | 19 | 10 | 0 | <1 | 0 |
| July | 29 | 25 | 0 | <1 | 0 |
| August | 29 | 24 | 0 | <1 | 0 |
| September | 19 | 9 | <1 | <1 | 0 |
| October | 4 | <1 | 6 | <1 | 0 |
| November | 0 | 0 | 20 | <1 | <1 |
| December | 0 | 0 | 26 | 1 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 81); on 2011–2025 it is September (80). 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% | 25% | 3% | 28% | -0.6–6.6°C |
| February | <1% | 23% | 3% | 24% | 4.1–10.8°C |
| March | 9% | 22% | 3% | 24% | 10.5–16.2°C |
| April | 34% | 19% | 2% | 16% | 15.6–21.4°C |
| May | 66% | 17% | 3% | 17% | 20.6–26.3°C |
| June | 83% | 14% | 2% | 10% | 25.3–30.7°C |
| July | 96% | 4% | <1% | 1% | 31.5–35.9°C |
| August | 96% | 4% | <1% | 2% | 30.2–34.6°C |
| September | 85% | 8% | 2% | 7% | 24.6–29.4°C |
| October | 44% | 14% | 2% | 11% | 17.0–22.0°C |
| November | 2% | 23% | 4% | 26% | 7.3–12.9°C |
| December | 0% | 26% | 4% | 30% | 1.1–7.1°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