September
September · August · May
United States · 1991–2020
September leads for comfortable weather in Middlebourne: typically 25.3°C by day, 11.4°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · May
August · July · June
October · September · April
The weakest month is January, scoring 5 against September’s 77 — days reach only 4°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 | 4°C | -6.7°C | 94 mm | 11.7 | 9 h 40 | 5 | Strong coverage |
| February | 6°C | -5.7°C | 83 mm | 10.2 | 10 h 39 | 5 | Strong coverage |
| March | 11.4°C | -2.1°C | 102 mm | 10.6 | 11 h 49 | 11 | Strong coverage |
| April | 18.6°C | 3°C | 100 mm | 10.8 | 13 h 11 | 45 | Strong coverage |
| May | 23.3°C | 8.9°C | 114 mm | 11.8 | 14 h 19 | 68 | Strong coverage |
| June | 27.2°C | 13.8°C | 123 mm | 10.9 | 14 h 56 | 68 | Strong coverage |
| July | 29°C | 16.4°C | 130 mm | 10.3 | 14 h 42 | 61 | Strong coverage |
| August | 28.5°C | 15.5°C | 102 mm | 8.6 | 13 h 43 | 70 | Strong coverage |
| September | 25.3°C | 11.4°C | 94 mm | 7.4 | 12 h 24 | 77 | Strong coverage |
| October | 18.9°C | 4.6°C | 83 mm | 8.7 | 11 h 05 | 53 | Strong coverage |
| November | 12.1°C | -0.8°C | 78 mm | 9.1 | 9 h 57 | 21 | Strong coverage |
| December | 6.4°C | -3.8°C | 95 mm | 11.1 | 9 h 24 | 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 | 26.1°C26 Jan 1950 | -36.7°C19 Jan 1994 | 52 mm12 Jan 2018 | 207 mm1950 · driest 19 mm in 1967 | 84 |
| February | 26.7°C21 Feb 2018 | -27.8°C6 Feb 1996 | 74 mm19 Feb 2000 | 197 mm2018 · driest 19 mm in 1968 | 84 |
| March | 31.1°C23 Mar 2026 | -25.6°C4 Mar 1943 | 65 mm2 Mar 1997 | 226 mm1997 · driest 25 mm in 2003 | 85 |
| April | 33.3°C26 Apr 1942 | -12.2°C1 Apr 1964 | 63 mm16 Apr 2018 | 219 mm1948 · driest 31 mm in 1960 | 84 |
| May | 35.6°C1 May 1942 | -5.6°C10 May 1966 | 59 mm12 May 1974 | 223 mm1968 · driest 29 mm in 2007 | 84 |
| June | 36.7°C30 Jun 1952 | -0.6°C2 Jun 1966 | 93 mm21 Jun 1974 | 298 mm1998 · driest 27 mm in 1966 | 84 |
| July | 39.4°C16 Jul 1988 | 2.8°C1 Jul 1988 | 74 mm1 Jul 2005 | 252 mm2017 · driest 30 mm in 1946 | 84 |
| August | 38.3°C5 Aug 1955 | 3.3°C29 Aug 1982 | 95 mm6 Aug 1995 | 284 mm1954 · driest 21 mm in 1981 | 83 |
| September | 39.4°C4 Sep 1953 | -2.2°C29 Sep 1942 | 99 mm9 Sep 2004 | 284 mm1945 · driest 14 mm in 1959 | 84 |
| October | 33.9°C1 Oct 1953 | -9.4°C21 Oct 1952 | 74 mm16 Oct 1954 | 168 mm1976 · driest 5 mm in 1963 | 84 |
| November | 29.4°C3 Nov 1961 | -18.3°C30 Nov 1958 | 86 mm5 Nov 1985 | 279 mm1985 · driest 9 mm in 2012 | 84 |
| December | 25.6°C3 Dec 1982 | -29.4°C22 Dec 1989 | 70 mm30 Dec 1942 | 190 mm1978 · driest 18 mm in 1955 | 84 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 3 | 7 |
| February | <1 | 0 | 24 | 3 | 5 |
| March | 1 | 0 | 21 | 4 | 2 |
| April | 6 | <1 | 10 | 4 | <1 |
| May | 13 | 3 | 1 | 4 | 0 |
| June | 22 | 8 | 0 | 4 | 0 |
| July | 28 | 12 | 0 | 4 | 0 |
| August | 28 | 11 | 0 | 3 | 0 |
| September | 18 | 5 | 0 | 3 | 0 |
| October | 6 | <1 | 7 | 3 | <1 |
| November | <1 | 0 | 19 | 3 | <1 |
| December | 0 | 0 | 24 | 3 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 37% | 9% | 51% | 0.9–8.1°C |
| February | 2% | 35% | 9% | 48% | 2.6–9.6°C |
| March | 12% | 35% | 11% | 49% | 8.5–15.6°C |
| April | 31% | 37% | 11% | 49% | 15.8–21.1°C |
| May | 50% | 39% | 13% | 54% | 21.1–26.5°C |
| June | 64% | 34% | 13% | 43% | 25.7–29.4°C |
| July | 66% | 33% | 14% | 43% | 27.8–31.3°C |
| August | 70% | 30% | 12% | 35% | 27.0–30.6°C |
| September | 68% | 26% | 9% | 28% | 23.6–28.0°C |
| October | 40% | 28% | 9% | 31% | 17.3–22.1°C |
| November | 11% | 31% | 9% | 39% | 9.4–15.2°C |
| December | 1% | 35% | 9% | 48% | 2.7–10.1°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