September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Holly Springs: typically 25.5°C by day, 10.6°C at night, with 73 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
October · September · May
The weakest month is January, scoring 5 against September’s 79 — days reach only -1°C, 25° 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°C | -12°C | 14 mm | 3.4 | 9 h 24 | 5 | Good coverage |
| February | 2.3°C | -9.1°C | 19 mm | 3.4 | 10 h 30 | 5 | Good coverage |
| March | 9.7°C | -3.4°C | 39 mm | 4.9 | 11 h 48 | 17 | Good coverage |
| April | 17.5°C | 2.9°C | 86 mm | 7.5 | 13 h 18 | 46 | Good coverage |
| May | 23.3°C | 9.6°C | 112 mm | 8.8 | 14 h 34 | 72 | Good coverage |
| June | 28.2°C | 15.3°C | 113 mm | 8 | 15 h 15 | 70 | Good coverage |
| July | 30°C | 17.6°C | 95 mm | 7 | 14 h 59 | 63 | Good coverage |
| August | 29°C | 16.3°C | 96 mm | 6.3 | 13 h 53 | 70 | Good coverage |
| September | 25.5°C | 10.6°C | 73 mm | 5.8 | 12 h 26 | 79 | Good coverage |
| October | 18.9°C | 4.2°C | 55 mm | 4.8 | 10 h 59 | 59 | Good coverage |
| November | 9.1°C | -3.2°C | 30 mm | 3.7 | 9 h 43 | 17 | Good coverage |
| December | 1.3°C | -9.3°C | 19 mm | 2.6 | 9 h 06 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C25 Jan 1944 | -35.6°C12 Jan 1912 | 36 mm4 Jan 1949 | 97 mm1949 · driest 0 mm in 1940 | 109 |
| February | 21.7°C7 Feb 1987 | -34.4°C2 Feb 1905 | 50 mm28 Feb 1951 | 94 mm1951 · driest 0 mm in 1904 | 108 |
| March | 32.8°C29 Mar 1986 | -30.6°C5 Mar 1960 | 73 mm23 Mar 1987 | 170 mm1987 · driest 0 mm in 1920 | 109 |
| April | 36.1°C28 Apr 1910 | -15.6°C3 Apr 1975 | 81 mm22 Apr 1999 | 203 mm1999 · driest 0 mm in 1928 | 109 |
| May | 41.1°C30 May 1934 | -8.3°C3 May 2005 | 107 mm5 May 2007 | 277 mm1959 · driest 0 mm in 1925 | 111 |
| June | 41.1°C16 Jun 1946 | 2.2°C7 Jun 1935 | 123 mm7 Jun 1934 | 294 mm1967 · driest 0 mm in 1923 | 109 |
| July | 43.3°C17 Jul 1936 | 5.0°C30 Jul 1971 | 232 mm17 Jul 1996 | 276 mm1996 · driest 0 mm in 1917 | 111 |
| August | 42.2°C8 Aug 1934 | 3.3°C29 Aug 1946 | 127 mm26 Aug 1903 | 220 mm2006 · driest 0 mm in 1919 | 112 |
| September | 40.0°C6 Sep 1939 | -5.0°C29 Sep 1899 | 177 mm26 Sep 1915 | 269 mm1965 · driest 0 mm in 1940 | 111 |
| October | 36.1°C3 Oct 1938 | -18.3°C28 Oct 1925 | 83 mm30 Oct 1979 | 192 mm1984 · driest 0 mm in 1952 | 111 |
| November | 27.8°C3 Nov 2005 | -26.1°C21 Nov 1937 | 58 mm5 Nov 1905 | 104 mm1991 · driest 0 mm in 1917 | 111 |
| December | 21.1°C1 Dec 1998 | -32.8°C22 Dec 1989 | 39 mm10 Dec 1911 | 79 mm1911 · driest 0 mm in 1935 | 110 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 4 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 23 | 2 | 2 |
| April | 5 | 1 | 9 | 3 | <1 |
| May | 13 | 4 | <1 | 4 | 0 |
| June | 24 | 12 | 0 | 4 | 0 |
| July | 28 | 16 | 0 | 3 | 0 |
| August | 28 | 13 | 0 | 3 | 0 |
| September | 17 | 7 | <1 | 3 | 0 |
| October | 6 | 2 | 9 | 2 | <1 |
| November | <1 | 0 | 22 | 1 | 2 |
| December | 0 | 0 | 29 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 10% | 1% | 5% | -5.2–4.7°C |
| February | <1% | 11% | 2% | 7% | -2.1–6.4°C |
| March | 10% | 16% | 4% | 16% | 3.9–12.9°C |
| April | 34% | 23% | 8% | 26% | 13.9–20.8°C |
| May | 57% | 27% | 11% | 32% | 21.3–26.6°C |
| June | 71% | 27% | 11% | 29% | 25.9–30.9°C |
| July | 80% | 20% | 8% | 20% | 28.5–33.4°C |
| August | 80% | 20% | 8% | 21% | 27.4–32.0°C |
| September | 72% | 18% | 8% | 18% | 22.7–27.8°C |
| October | 45% | 14% | 5% | 11% | 16.1–22.4°C |
| November | 6% | 12% | 3% | 7% | 5.9–12.7°C |
| December | <1% | 10% | 2% | 6% | -2.6–5.6°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