September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Blue Ridge: typically 25.4°C by day, 12.5°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
August · July · June
October · September · May
The weakest month is January, scoring 5 against September’s 79 — days reach only 1.1°C, 23° 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 | 1.1°C | -9.5°C | 23 mm | 3.9 | 9 h 36 | 5 | Strong coverage |
| February | 3.9°C | -7.3°C | 40 mm | 4.9 | 10 h 36 | 5 | Strong coverage |
| March | 10.9°C | -1.7°C | 60 mm | 6.5 | 11 h 49 | 20 | Strong coverage |
| April | 17°C | 4.4°C | 113 mm | 10 | 13 h 13 | 41 | Strong coverage |
| May | 22.6°C | 10.6°C | 153 mm | 11.1 | 14 h 23 | 64 | Strong coverage |
| June | 27.9°C | 16.4°C | 136 mm | 9.2 | 15 h 01 | 65 | Strong coverage |
| July | 30.3°C | 18.8°C | 132 mm | 7.9 | 14 h 46 | 54 | Strong coverage |
| August | 29.6°C | 17.5°C | 105 mm | 7.7 | 13 h 45 | 63 | Strong coverage |
| September | 25.4°C | 12.5°C | 96 mm | 6.3 | 12 h 24 | 79 | Strong coverage |
| October | 18.5°C | 5.8°C | 77 mm | 6.6 | 11 h 04 | 56 | Strong coverage |
| November | 10.4°C | -1°C | 50 mm | 5.6 | 9 h 54 | 22 | Strong coverage |
| December | 3.5°C | -6.5°C | 44 mm | 4.6 | 9 h 19 | 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 | 20.6°C23 Jan 1964 | -36.1°C27 Jan 1902 | 61 mm28 Jan 1909 | 152 mm1898 · driest 0 mm in 1912 | 128 |
| February | 27.2°C15 Feb 1921 | -32.8°C13 Feb 1905 | 51 mm21 Feb 1997 | 129 mm1911 · driest 0 mm in 1938 | 128 |
| March | 31.1°C29 Mar 1895 | -29.4°C5 Mar 1960 | 66 mm15 Mar 1919 | 186 mm1973 · driest 0 mm in 1910 | 128 |
| April | 33.9°C10 Apr 1930 | -15.0°C5 Apr 1920 | 91 mm10 Apr 1978 | 218 mm1927 · driest 13 mm in 1962 | 128 |
| May | 38.9°C30 May 1934 | -8.3°C4 May 1907 | 140 mm29 May 2019 | 374 mm2019 · driest 20 mm in 1992 | 130 |
| June | 39.4°C19 Jun 1936 | 3.3°C3 Jun 1969 | 208 mm29 Jun 2017 | 454 mm1947 · driest 3 mm in 1936 | 127 |
| July | 43.3°C15 Jul 1936 | 5.6°C31 Jul 1971 | 207 mm13 Jul 1992 | 576 mm1993 · driest 0 mm in 1983 | 127 |
| August | 44.4°C9 Aug 1934 | 3.3°C20 Aug 1950 | 131 mm5 Aug 2023 | 314 mm2023 · driest 0 mm in 1909 | 126 |
| September | 40.6°C3 Sep 1939 | -5.0°C29 Sep 1899 | 150 mm23 Sep 1959 | 359 mm1926 · driest 6 mm in 1979 | 124 |
| October | 35.6°C4 Oct 1938 | -10.6°C29 Oct 1952 | 155 mm11 Oct 1973 | 220 mm1967 · driest 0 mm in 1952 | 124 |
| November | 28.9°C1 Nov 1938 | -23.3°C30 Nov 1964 | 78 mm18 Nov 1958 | 210 mm1931 · driest 0 mm in 1921 | 124 |
| December | 22.8°C16 Dec 2021 | -33.9°C20 Dec 1901 | 66 mm8 Dec 1980 | 135 mm1982 · driest 0 mm in 1908 | 124 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 3 |
| February | 0 | 0 | 23 | 2 | 3 |
| March | <1 | 0 | 19 | 2 | <1 |
| April | 3 | <1 | 6 | 4 | <1 |
| May | 12 | 2 | <1 | 4 | 0 |
| June | 24 | 10 | 0 | 4 | 0 |
| July | 29 | 17 | 0 | 4 | 0 |
| August | 28 | 16 | 0 | 3 | 0 |
| September | 17 | 6 | <1 | 3 | 0 |
| October | 6 | <1 | 5 | 2 | <1 |
| November | <1 | 0 | 16 | 2 | <1 |
| December | 0 | 0 | 26 | 2 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 82); on 2011–2025 it is September (83). 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 | <1% | 14% | 3% | 8% | -2.5–5.3°C |
| February | 1% | 16% | 4% | 10% | -0.7–8.3°C |
| March | 12% | 20% | 7% | 20% | 6.8–14.7°C |
| April | 32% | 27% | 10% | 31% | 15.1–20.7°C |
| May | 56% | 31% | 13% | 37% | 20.9–26.2°C |
| June | 70% | 29% | 13% | 34% | 26.1–31.1°C |
| July | 77% | 23% | 11% | 21% | 28.8–33.8°C |
| August | 75% | 24% | 11% | 26% | 28.0–33.1°C |
| September | 71% | 23% | 11% | 24% | 23.8–28.7°C |
| October | 45% | 19% | 7% | 17% | 16.8–22.6°C |
| November | 10% | 16% | 5% | 12% | 7.7–14.1°C |
| December | <1% | 14% | 4% | 9% | 0.1–6.9°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