August
August · June · July
United States · 1991–2020
August leads for comfortable weather in Evergreen: typically 25.6°C by day, 14.2°C at night, with 103 mm of rain. Based on measured 1991–2020 NOAA station history.
August · June · July
July · August · June
September · May · June
The weakest month is January, scoring 5 against August’s 79 — days reach only -5°C, 29° 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 | -5°C | -13.7°C | 31 mm | 6.6 | 9 h 08 | 5 | Strong coverage |
| February | -2.4°C | -12.1°C | 27 mm | 5.2 | 10 h 21 | 5 | Strong coverage |
| March | 4.3°C | -5.9°C | 47 mm | 6.8 | 11 h 46 | 5 | Strong coverage |
| April | 12.2°C | 0.6°C | 79 mm | 9.4 | 13 h 25 | 23 | Strong coverage |
| May | 19.6°C | 7.3°C | 96 mm | 10.1 | 14 h 48 | 57 | Strong coverage |
| June | 24.7°C | 12.9°C | 119 mm | 10.3 | 15 h 34 | 76 | Strong coverage |
| July | 27°C | 15.2°C | 98 mm | 8.7 | 15 h 16 | 76 | Strong coverage |
| August | 25.6°C | 14.2°C | 103 mm | 8.5 | 14 h 04 | 79 | Strong coverage |
| September | 21.1°C | 9.6°C | 97 mm | 9.2 | 12 h 28 | 66 | Strong coverage |
| October | 13.3°C | 3.1°C | 78 mm | 7.8 | 10 h 53 | 33 | Strong coverage |
| November | 4.8°C | -3.4°C | 47 mm | 6.8 | 9 h 30 | 5 | Strong coverage |
| December | -2.2°C | -9.9°C | 39 mm | 6.8 | 8 h 48 | 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 | 12.2°C24 Jan 1942 | -40.0°C30 Jan 1951 | 38 mm18 Jan 1996 | 79 mm1967 · driest 2 mm in 1981 | 84 |
| February | 20.0°C27 Feb 2024 | -38.3°C9 Feb 1951 | 33 mm22 Feb 1981 | 103 mm2019 · driest 1 mm in 1964 | 85 |
| March | 26.1°C31 Mar 1986 | -36.1°C1 Mar 1962 | 46 mm31 Mar 2023 | 133 mm2025 · driest 1 mm in 1960 | 85 |
| April | 32.8°C28 Apr 1952 | -15.6°C4 Apr 1995 | 54 mm13 Apr 2026 | 222 mm2026 · driest 9 mm in 1946 | 85 |
| May | 34.4°C31 May 1986 | -6.7°C9 May 1947 | 78 mm16 May 1992 | 273 mm1942 · driest 27 mm in 1949 | 85 |
| June | 36.1°C14 Jun 1987 | -1.1°C30 Jun 1943 | 113 mm5 Jun 1980 | 239 mm1980 · driest 13 mm in 1976 | 85 |
| July | 38.9°C13 Jul 1995 | 3.3°C1 Jul 1948 | 85 mm28 Jul 1953 | 235 mm1978 · driest 27 mm in 1947 | 85 |
| August | 37.2°C24 Aug 1948 | 1.7°C24 Aug 1942 | 89 mm31 Aug 1945 | 352 mm1995 · driest 22 mm in 1970 | 84 |
| September | 37.2°C3 Sep 2023 | -5.0°C29 Sep 1949 | 91 mm2 Sep 1963 | 249 mm1986 · driest 5 mm in 2009 | 84 |
| October | 32.8°C1 Oct 1976 | -9.4°C23 Oct 1969 | 99 mm24 Oct 2023 | 160 mm1984 · driest 1 mm in 1952 | 83 |
| November | 23.3°C1 Nov 1944 | -26.1°C25 Nov 1950 | 52 mm1 Nov 1985 | 140 mm1991 · driest 1 mm in 1976 | 84 |
| December | 16.1°C2 Dec 1982 | -32.2°C19 Dec 1983 | 38 mm14 Dec 2015 | 126 mm2015 · driest 0 mm in 1943 | 85 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 11 |
| February | 0 | 0 | 27 | <1 | 9 |
| March | <1 | 0 | 26 | 2 | 6 |
| April | <1 | 0 | 15 | 3 | 4 |
| May | 7 | 1 | 2 | 3 | <1 |
| June | 16 | 4 | 0 | 4 | 0 |
| July | 23 | 7 | 0 | 3 | 0 |
| August | 19 | 4 | 0 | 3 | 0 |
| September | 8 | 1 | <1 | 3 | 0 |
| October | 1 | 0 | 9 | 3 | <1 |
| November | 0 | 0 | 23 | 2 | 6 |
| December | 0 | 0 | 30 | 1 | 11 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 84); on 2011–2025 it is August (82). 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 | 0% | 20% | 2% | 16% | -8.8–-2.2°C |
| February | 0% | 18% | 2% | 14% | -5.7–1.4°C |
| March | 1% | 23% | 6% | 24% | 0.5–8.0°C |
| April | 11% | 31% | 9% | 36% | 9.1–15.2°C |
| May | 36% | 32% | 10% | 41% | 16.5–22.0°C |
| June | 59% | 34% | 12% | 42% | 22.5–26.9°C |
| July | 71% | 28% | 11% | 32% | 25.0–28.9°C |
| August | 69% | 28% | 11% | 33% | 23.7–27.4°C |
| September | 43% | 31% | 10% | 39% | 18.5–22.9°C |
| October | 15% | 24% | 8% | 25% | 10.7–16.4°C |
| November | 1% | 23% | 5% | 23% | 1.0–7.9°C |
| December | 0% | 21% | 3% | 18% | -6.0–0.5°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