May
May · October · April
United States · 1991–2020
May leads for comfortable weather in Knightdale: typically 26.3°C by day, 13.7°C at night, with 97 mm of rain. Based on measured 1991–2020 NOAA station history.
May · October · April
June · August · July
October · April · November
The weakest month is January, scoring 13 against May’s 76 — days reach only 11°C, 13° below the 24°C the score treats as ideal, and nights drop to -1.5°C.
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 | 11°C | -1.5°C | 99 mm | 8.9 | 9 h 59 | 13 | Strong coverage |
| February | 13.4°C | -0.5°C | 78 mm | 8 | 10 h 50 | 27 | Strong coverage |
| March | 17.3°C | 3°C | 111 mm | 9 | 11 h 51 | 40 | Strong coverage |
| April | 22.6°C | 8.2°C | 95 mm | 7.9 | 13 h 03 | 70 | Strong coverage |
| May | 26.3°C | 13.7°C | 97 mm | 8.4 | 14 h 02 | 76 | Strong coverage |
| June | 30°C | 18.3°C | 119 mm | 9.4 | 14 h 34 | 57 | Strong coverage |
| July | 31.8°C | 20.6°C | 152 mm | 10.1 | 14 h 22 | 41 | Strong coverage |
| August | 30.9°C | 20°C | 146 mm | 9 | 13 h 31 | 47 | Strong coverage |
| September | 27.8°C | 16.6°C | 156 mm | 7.7 | 12 h 22 | 63 | Strong coverage |
| October | 22.7°C | 9.6°C | 84 mm | 6.3 | 11 h 13 | 76 | Strong coverage |
| November | 17.4°C | 3.3°C | 89 mm | 7 | 10 h 13 | 46 | Strong coverage |
| December | 13.1°C | 0.3°C | 104 mm | 9.1 | 9 h 45 | 23 | 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°C2 Jan 2022 | -23.3°C21 Jan 1985 | 67 mm11 Jan 2014 | 223 mm1987 · driest 22 mm in 2004 | 67 |
| February | 28.3°C23 Feb 2023 | -15.6°C10 Feb 1979 | 91 mm7 Feb 2020 | 225 mm2021 · driest 9 mm in 1991 | 65 |
| March | 32.8°C12 Mar 1990 | -11.7°C6 Mar 1960 | 104 mm17 Mar 2025 | 201 mm2003 · driest 34 mm in 2006 | 68 |
| April | 36.1°C27 Apr 1990 | -4.4°C8 Apr 2007 | 146 mm25 Apr 2017 | 263 mm2017 · driest 8 mm in 1976 | 69 |
| May | 35.6°C20 May 1996 | 0.6°C10 May 1977 | 132 mm20 May 1983 | 233 mm1958 · driest 22 mm in 1999 | 67 |
| June | 39.4°C30 Jun 1959 | 6.7°C8 Jun 1977 | 141 mm18 Jun 1967 | 330 mm2013 · driest 11 mm in 1993 | 67 |
| July | 39.4°C9 Jul 1977 | 11.1°C2 Jul 1975 | 136 mm28 Jul 1965 | 382 mm1959 · driest 31 mm in 1976 | 66 |
| August | 41.7°C18 Aug 1988 | 8.9°C29 Aug 1986 | 252 mm28 Aug 1995 | 340 mm2004 · driest 16 mm in 1975 | 67 |
| September | 36.7°C1 Sep 1993 | 4.4°C30 Sep 1993 | 241 mm16 Sep 1999 | 524 mm1999 · driest 10 mm in 1990 | 68 |
| October | 35.6°C4 Oct 2019 | -6.7°C27 Oct 1962 | 192 mm9 Oct 2016 | 309 mm1959 · driest 0 mm in 2000 | 68 |
| November | 30.0°C8 Nov 2022 | -11.1°C24 Nov 1970 | 110 mm6 Nov 1963 | 220 mm2006 · driest 6 mm in 1958 | 66 |
| December | 27.2°C9 Dec 1998 | -15.0°C24 Dec 1983 | 76 mm9 Dec 2018 | 235 mm2018 · driest 1 mm in 1965 | 69 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 19 | 3 | 1 |
| February | <1 | 0 | 16 | 3 | <1 |
| March | 4 | <1 | 11 | 4 | <1 |
| April | 12 | 2 | 1 | 4 | 0 |
| May | 20 | 7 | 0 | 3 | 0 |
| June | 26 | 16 | 0 | 4 | 0 |
| July | 28 | 23 | 0 | 4 | 0 |
| August | 28 | 20 | 0 | 4 | 0 |
| September | 22 | 10 | 0 | 4 | 0 |
| October | 11 | 1 | <1 | 2 | 0 |
| November | 2 | 0 | 9 | 3 | <1 |
| December | <1 | 0 | 17 | 4 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was October (scoring 82); on 2011–2025 it is May (81). 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 | 7% | 27% | 10% | 31% | 8.5–14.1°C |
| February | 13% | 31% | 13% | 38% | 9.7–16.1°C |
| March | 29% | 29% | 12% | 31% | 14.8–20.5°C |
| April | 58% | 25% | 11% | 25% | 20.8–25.1°C |
| May | 67% | 29% | 11% | 35% | 24.9–28.5°C |
| June | 71% | 29% | 11% | 36% | 28.6–32.0°C |
| July | 68% | 33% | 15% | 42% | 30.0–33.6°C |
| August | 71% | 29% | 13% | 32% | 29.1–32.3°C |
| September | 75% | 24% | 11% | 25% | 26.3–30.0°C |
| October | 62% | 20% | 8% | 20% | 21.2–24.6°C |
| November | 33% | 22% | 9% | 21% | 15.1–20.7°C |
| December | 10% | 27% | 10% | 31% | 10.4–16.0°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