July
July · August · September
United States · 1991–2020
July leads for comfortable weather in Evergreen: typically 27.9°C by day, 8.9°C at night, with 29 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · September
July · August · September
September · May · June
The weakest month is January, scoring 5 against July’s 74 — days reach only -0.4°C, 24° 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 | -0.4°C | -8.5°C | 36 mm | 9 | 8 h 45 | 5 | Strong coverage |
| February | 2°C | -7.7°C | 24 mm | 7.2 | 10 h 07 | 5 | Strong coverage |
| March | 7.4°C | -4.1°C | 28 mm | 7.4 | 11 h 44 | 7 | Strong coverage |
| April | 12.9°C | -0.6°C | 34 mm | 7.7 | 13 h 35 | 31 | Strong coverage |
| May | 18.6°C | 3.7°C | 47 mm | 8.5 | 15 h 10 | 55 | Strong coverage |
| June | 21.9°C | 7°C | 72 mm | 9.7 | 16 h 03 | 67 | Strong coverage |
| July | 27.9°C | 8.9°C | 29 mm | 4.9 | 15 h 42 | 74 | Strong coverage |
| August | 27.7°C | 7.9°C | 19 mm | 4 | 14 h 19 | 74 | Strong coverage |
| September | 21.5°C | 3.8°C | 30 mm | 5.5 | 12 h 31 | 69 | Strong coverage |
| October | 12.6°C | -1.3°C | 34 mm | 7.5 | 10 h 44 | 29 | Strong coverage |
| November | 4.4°C | -4.4°C | 34 mm | 8 | 9 h 09 | 5 | Strong coverage |
| December | -0.5°C | -7.9°C | 38 mm | 9.3 | 8 h 22 | 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 | 13.3°C27 Jan 1934 | -38.9°C31 Jan 1950 | 26 mm23 Jan 1982 | 86 mm1943 · driest 5 mm in 1985 | 129 |
| February | 17.8°C24 Feb 1995 | -37.8°C1 Feb 1950 | 25 mm11 Feb 1897 | 71 mm2017 · driest 1 mm in 2005 | 128 |
| March | 22.8°C30 Mar 2004 | -33.9°C3 Mar 1960 | 25 mm27 Mar 1936 | 75 mm1987 · driest 2 mm in 1994 | 129 |
| April | 29.4°C18 Apr 1936 | -22.2°C1 Apr 1936 | 40 mm30 Apr 1951 | 60 mm1978 · driest 0 mm in 1924 | 129 |
| May | 35.0°C30 May 1936 | -8.3°C1 May 1899 | 35 mm22 May 1948 | 121 mm1990 · driest 6 mm in 2015 | 129 |
| June | 38.9°C28 Jun 2015 | -3.3°C7 Jun 1999 | 69 mm29 Jun 1982 | 158 mm2012 · driest 9 mm in 1896 | 130 |
| July | 40.0°C19 Jul 1960 | -1.1°C3 Jul 1999 | 53 mm22 Jul 1987 | 153 mm1993 · driest 1 mm in 1953 | 131 |
| August | 40.6°C4 Aug 1961 | -1.1°C25 Aug 1910 | 48 mm22 Aug 1947 | 96 mm1976 · driest 0 mm in 1955 | 130 |
| September | 37.2°C1 Sep 1967 | -13.9°C24 Sep 1926 | 52 mm1 Sep 1896 | 101 mm1985 · driest 0 mm in 1990 | 130 |
| October | 30.0°C2 Oct 1992 | -20.0°C31 Oct 1935 | 33 mm4 Oct 1914 | 123 mm2016 · driest 0 mm in 1907 | 129 |
| November | 20.6°C12 Nov 1999 | -33.3°C16 Nov 1959 | 51 mm19 Nov 1900 | 131 mm1897 · driest 4 mm in 1929 | 129 |
| December | 16.7°C1 Dec 2021 | -37.2°C29 Dec 1990 | 34 mm22 Dec 1964 | 122 mm1917 · driest 7 mm in 1897 | 130 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 10 |
| February | 0 | 0 | 27 | <1 | 8 |
| March | 0 | 0 | 27 | <1 | 4 |
| April | <1 | 0 | 18 | <1 | 2 |
| May | 5 | <1 | 6 | 1 | <1 |
| June | 9 | 2 | <1 | 2 | <1 |
| July | 24 | 12 | <1 | <1 | 0 |
| August | 23 | 12 | <1 | <1 | 0 |
| September | 9 | 2 | 5 | <1 | 0 |
| October | <1 | 0 | 20 | <1 | <1 |
| November | 0 | 0 | 25 | <1 | 6 |
| December | 0 | 0 | 30 | <1 | 11 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 29% | 2% | 34% | -5.4–1.7°C |
| February | 0% | 25% | 1% | 26% | -2.0–4.8°C |
| March | <1% | 22% | <1% | 22% | 3.4–9.8°C |
| April | 11% | 21% | 2% | 19% | 9.7–15.4°C |
| May | 34% | 26% | 3% | 30% | 15.3–20.8°C |
| June | 54% | 30% | 6% | 36% | 19.3–24.7°C |
| July | 82% | 16% | 2% | 13% | 24.8–30.1°C |
| August | 80% | 15% | 2% | 14% | 23.7–29.4°C |
| September | 51% | 19% | 3% | 18% | 17.1–23.9°C |
| October | 10% | 20% | 2% | 21% | 10.1–15.5°C |
| November | 0% | 27% | 2% | 31% | 1.6–6.7°C |
| December | 0% | 30% | 2% | 37% | -3.9–2.2°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