September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Burr Hill: typically 25.9°C by day, 14.8°C at night, with 112 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 79 — days reach only 6.9°C, 17° 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 | 6.9°C | -3.6°C | 69 mm | 7 | 9 h 46 | 5 | Strong coverage |
| February | 8.8°C | -2.4°C | 62 mm | 6.4 | 10 h 42 | 12 | Strong coverage |
| March | 13.1°C | 1.3°C | 85 mm | 7.4 | 11 h 50 | 29 | Strong coverage |
| April | 19.5°C | 6.9°C | 85 mm | 8.1 | 13 h 08 | 59 | Strong coverage |
| May | 23.6°C | 12.1°C | 100 mm | 9.8 | 14 h 14 | 78 | Strong coverage |
| June | 28.1°C | 17°C | 122 mm | 9 | 14 h 49 | 65 | Strong coverage |
| July | 30.3°C | 19.4°C | 113 mm | 8.8 | 14 h 35 | 55 | Strong coverage |
| August | 29.4°C | 18.5°C | 87 mm | 7.3 | 13 h 39 | 65 | Strong coverage |
| September | 25.9°C | 14.8°C | 112 mm | 7.2 | 12 h 23 | 79 | Strong coverage |
| October | 20.1°C | 8°C | 85 mm | 6.1 | 11 h 08 | 65 | Strong coverage |
| November | 14.1°C | 2.6°C | 81 mm | 6.2 | 10 h 02 | 36 | Strong coverage |
| December | 8.9°C | -1.5°C | 75 mm | 6.7 | 9 h 30 | 11 | 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 | 27.2°C31 Jan 2002 | -22.8°C21 Jan 1970 | 75 mm10 Jan 2024 | 221 mm1978 · driest 0 mm in 2025 | 80 |
| February | 27.2°C24 Feb 2023 | -23.9°C5 Feb 1996 | 59 mm8 Feb 1965 | 191 mm1998 · driest 0 mm in 2025 | 80 |
| March | 31.7°C23 Mar 2026 | -15.6°C4 Mar 2014 | 70 mm6 Mar 1962 | 213 mm1993 · driest 1 mm in 2025 | 80 |
| April | 34.4°C24 Apr 1960 | -7.8°C10 Apr 1985 | 70 mm13 Apr 2020 | 202 mm1983 · driest 7 mm in 2019 | 79 |
| May | 36.1°C19 May 2026 | -2.2°C9 May 1947 | 119 mm6 May 1989 | 262 mm1971 · driest 14 mm in 2021 | 80 |
| June | 38.9°C27 Jun 1952 | 5.0°C1 Jun 1966 | 199 mm22 Jun 1972 | 325 mm1972 · driest 11 mm in 2026 | 79 |
| July | 41.1°C1 Jul 1959 | 8.3°C1 Jul 1988 | 118 mm24 Jul 1997 | 252 mm1997 · driest 19 mm in 2023 | 79 |
| August | 39.4°C30 Aug 1953 | 6.7°C29 Aug 1986 | 122 mm28 Aug 1978 | 338 mm1955 · driest 13 mm in 1995 | 79 |
| September | 41.1°C6 Sep 1954 | 0.6°C25 Sep 1963 | 126 mm9 Sep 1987 | 283 mm1987 · driest 12 mm in 2007 | 79 |
| October | 36.7°C7 Oct 1951 | -5.6°C30 Oct 1952 | 133 mm15 Oct 1954 | 307 mm1976 · driest 0 mm in 1963 | 79 |
| November | 30.0°C1 Nov 1950 | -12.8°C29 Nov 1955 | 139 mm28 Nov 1993 | 307 mm1985 · driest 0 mm in 2023 | 80 |
| December | 26.1°C6 Dec 2001 | -20.0°C23 Dec 1989 | 113 mm21 Dec 1946 | 205 mm2009 · driest 0 mm in 2024 | 80 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 2 | 3 |
| February | <1 | 0 | 21 | 2 | 3 |
| March | 2 | <1 | 14 | 3 | 1 |
| April | 7 | 1 | 2 | 3 | 0 |
| May | 14 | 4 | <1 | 3 | 0 |
| June | 24 | 11 | 0 | 4 | 0 |
| July | 29 | 18 | 0 | 4 | 0 |
| August | 29 | 14 | 0 | 2 | 0 |
| September | 19 | 6 | 0 | 3 | 0 |
| October | 6 | <1 | 1 | 3 | 0 |
| November | <1 | 0 | 10 | 3 | <1 |
| December | <1 | 0 | 21 | 2 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 84); on 2011–2025 it is May (87). 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 | 2% | 23% | 8% | 22% | 3.8–10.3°C |
| February | 4% | 24% | 8% | 24% | 5.4–12.0°C |
| March | 15% | 25% | 10% | 27% | 10.3–16.4°C |
| April | 39% | 27% | 9% | 32% | 17.4–22.2°C |
| May | 59% | 31% | 11% | 38% | 22.1–26.4°C |
| June | 72% | 27% | 11% | 30% | 26.7–30.2°C |
| July | 71% | 29% | 12% | 33% | 28.8–32.6°C |
| August | 75% | 25% | 10% | 24% | 27.8–31.2°C |
| September | 73% | 22% | 9% | 20% | 24.5–28.5°C |
| October | 49% | 19% | 9% | 19% | 18.4–22.8°C |
| November | 16% | 23% | 9% | 19% | 11.8–16.8°C |
| December | 3% | 21% | 8% | 20% | 6.2–11.6°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