September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Copeland: typically 26.3°C by day, 14.3°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 77 — days reach only 4.5°C, 19° 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 | 4.5°C | -6.2°C | 50 mm | 5.1 | 9 h 47 | 5 | Strong coverage |
| February | 7.5°C | -4.1°C | 41 mm | 4.3 | 10 h 43 | 9 | Strong coverage |
| March | 13.4°C | 1°C | 79 mm | 7.6 | 11 h 50 | 29 | Strong coverage |
| April | 18.9°C | 6.4°C | 117 mm | 8.7 | 13 h 08 | 51 | Strong coverage |
| May | 23.7°C | 12.4°C | 149 mm | 10.2 | 14 h 13 | 72 | Strong coverage |
| June | 28.7°C | 17.7°C | 118 mm | 8.5 | 14 h 48 | 63 | Strong coverage |
| July | 31.2°C | 20°C | 114 mm | 6.9 | 14 h 34 | 52 | Strong coverage |
| August | 30.7°C | 19°C | 106 mm | 6.7 | 13 h 38 | 57 | Strong coverage |
| September | 26.3°C | 14.3°C | 110 mm | 6.6 | 12 h 23 | 77 | Strong coverage |
| October | 20.1°C | 7.6°C | 85 mm | 7.1 | 11 h 08 | 63 | Strong coverage |
| November | 12.8°C | 1.3°C | 81 mm | 5.6 | 10 h 03 | 30 | Strong coverage |
| December | 6.7°C | -3.8°C | 58 mm | 5.2 | 9 h 31 | 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 | 25.0°C24 Jan 1950 | -30.0°C18 Jan 1930 | 114 mm11 Jan 2011 | 180 mm1907 · driest 0 mm in 2014 | 133 |
| February | 28.3°C1 Feb 1911 | -33.9°C13 Feb 1905 | 65 mm21 Feb 1997 | 139 mm1985 · driest 0 mm in 2006 | 129 |
| March | 34.4°C22 Mar 2026 | -21.7°C12 Mar 1948 | 95 mm5 Mar 2004 | 259 mm1973 · driest 12 mm in 1966 | 131 |
| April | 34.4°C20 Apr 1902 | -10.6°C5 Apr 1920 | 122 mm28 Apr 1994 | 390 mm1994 · driest 12 mm in 1989 | 131 |
| May | 37.8°C30 May 1934 | -3.3°C4 May 1907 | 140 mm18 May 1943 | 409 mm1943 · driest 16 mm in 1911 | 128 |
| June | 42.2°C29 Jun 1952 | 5.0°C6 Jun 1897 | 114 mm4 Jun 1943 | 355 mm1981 · driest 12 mm in 1933 | 131 |
| July | 46.7°C14 Jul 1954 | 7.8°C6 Jul 1972 | 149 mm1 Jul 2007 | 354 mm1993 · driest 0 mm in 1936 | 131 |
| August | 44.4°C9 Aug 1936 | 6.7°C29 Aug 1988 | 232 mm13 Aug 1946 | 282 mm1902 · driest 0 mm in 1913 | 130 |
| September | 41.7°C6 Sep 1913 | -1.7°C27 Sep 1942 | 162 mm14 Sep 1998 | 359 mm1986 · driest 6 mm in 1939 | 131 |
| October | 37.8°C13 Oct 1899 | -7.8°C30 Oct 1917 | 231 mm3 Oct 1986 | 334 mm1986 · driest 1 mm in 1952 | 129 |
| November | 32.2°C6 Nov 1915 | -17.2°C15 Nov 1940 | 86 mm8 Nov 2011 | 356 mm1992 · driest 0 mm in 1965 | 132 |
| December | 25.6°C26 Dec 2025 | -30.0°C23 Dec 1989 | 81 mm2 Dec 1982 | 215 mm1895 · driest 2 mm in 2025 | 131 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 1 | 2 |
| February | <1 | 0 | 22 | 2 | 1 |
| March | 2 | <1 | 15 | 3 | <1 |
| April | 6 | <1 | 4 | 4 | 0 |
| May | 15 | 3 | 0 | 5 | 0 |
| June | 26 | 14 | 0 | 4 | 0 |
| July | 30 | 21 | 0 | 4 | 0 |
| August | 29 | 19 | 0 | 3 | 0 |
| September | 19 | 8 | <1 | 3 | 0 |
| October | 8 | 1 | 3 | 3 | 0 |
| November | <1 | 0 | 13 | 2 | <1 |
| December | 0 | 0 | 24 | 2 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 78); on 2011–2025 it is September (80). 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% | 15% | 4% | 11% | 1.8–8.5°C |
| February | 5% | 17% | 5% | 13% | 3.0–11.6°C |
| March | 21% | 22% | 8% | 21% | 10.4–17.9°C |
| April | 41% | 27% | 12% | 32% | 17.2–22.7°C |
| May | 61% | 30% | 14% | 36% | 22.3–27.4°C |
| June | 71% | 28% | 14% | 32% | 27.5–32.1°C |
| July | 79% | 21% | 10% | 18% | 30.1–34.6°C |
| August | 80% | 20% | 9% | 19% | 29.6–35.1°C |
| September | 74% | 22% | 11% | 20% | 25.1–30.7°C |
| October | 54% | 21% | 9% | 19% | 19.0–24.8°C |
| November | 18% | 17% | 7% | 13% | 10.6–16.7°C |
| December | 2% | 16% | 5% | 11% | 4.1–9.9°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