October
October · May · April
United States · 1991–2020
October leads for comfortable weather in Derma: typically 24.6°C by day, 10°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.
October · May · April
September · August · July
October · November · March
The weakest month is January, scoring 18 against October’s 79 — days reach only 12.1°C, 12° below the 24°C the score treats as ideal, and nights drop to 0.3°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 | 12.1°C | 0.3°C | 121 mm | 7.6 | 10 h 08 | 18 | Strong coverage |
| February | 14.9°C | 1.9°C | 132 mm | 7.4 | 10 h 55 | 29 | Strong coverage |
| March | 19.5°C | 5.7°C | 134 mm | 8.8 | 11 h 52 | 49 | Strong coverage |
| April | 23.7°C | 9.9°C | 157 mm | 7.4 | 12 h 59 | 69 | Strong coverage |
| May | 27.5°C | 15°C | 134 mm | 7.6 | 13 h 54 | 70 | Strong coverage |
| June | 30.8°C | 19.3°C | 145 mm | 7.6 | 14 h 23 | 50 | Strong coverage |
| July | 32.7°C | 21.4°C | 99 mm | 7 | 14 h 12 | 47 | Strong coverage |
| August | 32.4°C | 20.7°C | 98 mm | 6.5 | 13 h 25 | 50 | Strong coverage |
| September | 29.9°C | 16.8°C | 84 mm | 4.6 | 12 h 20 | 69 | Strong coverage |
| October | 24.6°C | 10°C | 91 mm | 5 | 11 h 17 | 79 | Strong coverage |
| November | 18.4°C | 4.5°C | 101 mm | 6.3 | 10 h 21 | 51 | Strong coverage |
| December | 13.5°C | 1.1°C | 148 mm | 7.9 | 9 h 55 | 20 | 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 | -25.6°C30 Jan 1966 | 147 mm19 Jan 2001 | 365 mm1979 · driest 3 mm in 1992 | 69 |
| February | 30.0°C23 Feb 1996 | -16.1°C4 Feb 1996 | 125 mm22 Feb 2019 | 305 mm1991 · driest 0 mm in 1994 | 73 |
| March | 32.8°C27 Mar 2020 | -12.2°C3 Mar 1980 | 151 mm16 Mar 1973 | 376 mm1980 · driest 5 mm in 1918 | 71 |
| April | 33.9°C29 Apr 1915 | -3.3°C3 Apr 1962 | 146 mm2 Apr 2000 | 476 mm1991 · driest 12 mm in 2024 | 71 |
| May | 35.6°C3 May 1955 | 0.6°C4 May 1976 | 148 mm3 May 1997 | 371 mm1997 · driest 19 mm in 1988 | 72 |
| June | 40.6°C17 Jun 1918 | 5.6°C1 Jun 1966 | 131 mm5 Jun 1989 | 376 mm1994 · driest 4 mm in 1988 | 73 |
| July | 40.0°C16 Jul 1980 | 10.0°C15 Jul 1967 | 98 mm14 Jul 1963 | 393 mm1979 · driest 14 mm in 1986 | 72 |
| August | 41.1°C30 Aug 2000 | 8.3°C23 Aug 1956 | 123 mm30 Aug 2005 | 202 mm2017 · driest 2 mm in 1980 | 71 |
| September | 40.0°C1 Sep 2000 | 1.1°C30 Sep 1967 | 128 mm27 Sep 2002 | 258 mm2002 · driest 0 mm in 2019 | 70 |
| October | 36.7°C4 Oct 2019 | -4.4°C28 Oct 1957 | 103 mm16 Oct 2006 | 298 mm2009 · driest 0 mm in 2024 | 71 |
| November | 32.2°C1 Nov 2016 | -11.7°C18 Nov 1959 | 117 mm14 Nov 1957 | 362 mm1957 · driest 22 mm in 1965 | 67 |
| December | 27.2°C11 Dec 2021 | -22.2°C24 Dec 1989 | 194 mm3 Dec 1983 | 428 mm1982 · driest 13 mm in 1980 | 66 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 16 | 4 |
| February | 1 | 0 | 13 | 4 |
| March | 7 | <1 | 6 | 4 |
| April | 15 | 2 | 1 | 4 |
| May | 23 | 10 | 0 | 4 |
| June | 28 | 20 | 0 | 5 |
| July | 29 | 26 | 0 | 3 |
| August | 30 | 25 | 0 | 3 |
| September | 26 | 16 | 0 | 2 |
| October | 15 | 4 | 1 | 3 |
| November | 4 | <1 | 8 | 3 |
| December | <1 | 0 | 16 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 10% | 27% | 14% | 30% | 8.9–15.2°C |
| February | 20% | 27% | 14% | 30% | 10.9–18.2°C |
| March | 40% | 27% | 14% | 27% | 16.4–22.3°C |
| April | 63% | 25% | 14% | 25% | 21.8–26.1°C |
| May | 75% | 24% | 12% | 23% | 25.9–29.7°C |
| June | 76% | 23% | 12% | 24% | 29.5–32.9°C |
| July | 77% | 24% | 11% | 23% | 31.3–34.5°C |
| August | 80% | 20% | 9% | 19% | 31.0–34.2°C |
| September | 82% | 18% | 8% | 13% | 27.8–32.5°C |
| October | 75% | 15% | 8% | 12% | 22.9–27.1°C |
| November | 39% | 22% | 12% | 20% | 16.2–21.6°C |
| December | 14% | 25% | 14% | 27% | 11.2–16.9°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