June
June · August · September
United States · 1991–2020
June leads for comfortable weather in Willsboro: typically 25°C by day, 13.4°C at night, with 108 mm of rain. Based on measured 1991–2020 NOAA station history.
June · August · September
July · August · June
May · September · June
The weakest month is January, scoring 5 against June’s 77 — days reach only -2.1°C, 26° 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 | -2.1°C | -11.2°C | 54 mm | 8.8 | 9 h 11 | 5 | Strong coverage |
| February | -0.6°C | -10.5°C | 45 mm | 7.5 | 10 h 22 | 5 | Strong coverage |
| March | 4.6°C | -5.3°C | 57 mm | 8.9 | 11 h 46 | 5 | Strong coverage |
| April | 12.6°C | 1.5°C | 78 mm | 10.2 | 13 h 23 | 26 | Strong coverage |
| May | 20.2°C | 8.1°C | 96 mm | 10.9 | 14 h 45 | 60 | Strong coverage |
| June | 25°C | 13.4°C | 108 mm | 10.6 | 15 h 30 | 77 | Strong coverage |
| July | 27.6°C | 16.3°C | 103 mm | 10.6 | 15 h 13 | 69 | Strong coverage |
| August | 26.7°C | 15.3°C | 90 mm | 9 | 14 h 02 | 77 | Strong coverage |
| September | 22.2°C | 11°C | 93 mm | 8.5 | 12 h 27 | 74 | Strong coverage |
| October | 14.6°C | 4.9°C | 97 mm | 10.1 | 10 h 54 | 36 | Strong coverage |
| November | 7.7°C | -0.5°C | 69 mm | 9.6 | 9 h 32 | 8 | Strong coverage |
| December | 1.3°C | -6.5°C | 64 mm | 10.2 | 8 h 52 | 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 | 18.9°C15 Jan 1995 | -34.4°C15 Jan 1957 | 54 mm8 Jan 1998 | 131 mm1998 · driest 11 mm in 1989 | 86 |
| February | 22.2°C25 Feb 2017 | -34.4°C12 Feb 1979 | 49 mm14 Feb 2007 | 137 mm1981 · driest 5 mm in 1978 | 86 |
| March | 28.9°C31 Mar 1998 | -28.9°C6 Mar 1948 | 36 mm4 Mar 1971 | 105 mm2001 · driest 10 mm in 1965 | 86 |
| April | 32.8°C18 Apr 1976 | -16.7°C7 Apr 1972 | 70 mm26 Apr 2011 | 200 mm2011 · driest 19 mm in 1999 | 86 |
| May | 35.0°C27 May 2020 | -4.4°C3 May 1966 | 57 mm23 May 2013 | 222 mm2013 · driest 8 mm in 1977 | 86 |
| June | 37.8°C19 Jun 1995 | 0.6°C3 Jun 1986 | 101 mm14 Jun 1942 | 251 mm2013 · driest 21 mm in 1995 | 86 |
| July | 37.8°C14 Jul 1995 | 3.9°C6 Jul 1962 | 68 mm15 Jul 1985 | 237 mm1998 · driest 20 mm in 2001 | 86 |
| August | 38.3°C11 Aug 1944 | 1.7°C31 Aug 1976 | 92 mm11 Aug 1998 | 293 mm1955 · driest 18 mm in 1957 | 85 |
| September | 36.7°C9 Sep 2002 | -3.9°C24 Sep 1963 | 79 mm21 Sep 1983 | 261 mm1999 · driest 22 mm in 1948 | 85 |
| October | 30.0°C4 Oct 2023 | -9.4°C20 Oct 1972 | 84 mm31 Oct 2019 | 216 mm2019 · driest 13 mm in 1963 | 85 |
| November | 24.4°C6 Nov 2022 | -18.9°C30 Nov 1958 | 63 mm10 Nov 1990 | 174 mm1983 · driest 16 mm in 1952 | 85 |
| December | 20.0°C24 Dec 2015 | -32.2°C26 Dec 1980 | 66 mm4 Dec 1950 | 152 mm1973 · driest 10 mm in 1998 | 86 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 1 | 14 |
| February | 0 | 0 | 26 | 1 | 12 |
| March | <1 | 0 | 26 | 2 | 9 |
| April | 1 | <1 | 13 | 3 | 3 |
| May | 7 | 2 | <1 | 3 | <1 |
| June | 16 | 5 | 0 | 4 | 0 |
| July | 25 | 9 | 0 | 3 | 0 |
| August | 22 | 6 | 0 | 3 | 0 |
| September | 9 | 2 | <1 | 3 | 0 |
| October | 1 | 0 | 6 | 3 | <1 |
| November | 0 | 0 | 17 | 2 | 5 |
| December | 0 | 0 | 27 | 2 | 12 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 87); on 2011–2025 it is September (84). 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% | 28% | 4% | 31% | -6.8–0.8°C |
| February | 0% | 27% | 4% | 29% | -4.8–2.1°C |
| March | 1% | 29% | 5% | 38% | 0.9–7.9°C |
| April | 10% | 33% | 8% | 43% | 9.8–15.0°C |
| May | 36% | 35% | 9% | 47% | 16.8–22.4°C |
| June | 58% | 34% | 11% | 44% | 23.4–26.8°C |
| July | 67% | 32% | 10% | 40% | 25.5–29.5°C |
| August | 66% | 31% | 10% | 37% | 24.2–28.2°C |
| September | 47% | 29% | 9% | 36% | 19.1–23.7°C |
| October | 15% | 30% | 9% | 39% | 12.4–17.2°C |
| November | 1% | 33% | 8% | 42% | 4.4–10.3°C |
| December | 0% | 31% | 6% | 40% | -3.3–3.5°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