April
April · October · May
United States · 1991–2020
April leads for comfortable weather in Dry Valley: typically 23.7°C by day, 9.8°C at night, with 77 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · May
September · July · August
March · November · April
The weakest month is January, scoring 31 against April’s 82 — days reach only 12.3°C, 12° below the 24°C the score treats as ideal, and nights drop to -1°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 | 12.3°C | -1°C | 41 mm | 4 | 10 h 09 | 31 | Strong coverage |
| February | 14.7°C | 1°C | 59 mm | 4.4 | 10 h 56 | 40 | Strong coverage |
| March | 19.5°C | 5.4°C | 74 mm | 5 | 11 h 53 | 61 | Strong coverage |
| April | 23.7°C | 9.8°C | 77 mm | 4.9 | 12 h 58 | 82 | Strong coverage |
| May | 27.3°C | 15.3°C | 132 mm | 7.2 | 13 h 53 | 71 | Strong coverage |
| June | 31.7°C | 19.9°C | 103 mm | 5.9 | 14 h 22 | 54 | Strong coverage |
| July | 34.2°C | 22.2°C | 64 mm | 4 | 14 h 10 | 48 | Strong coverage |
| August | 34.4°C | 21.9°C | 63 mm | 4.3 | 13 h 24 | 48 | Strong coverage |
| September | 30.3°C | 17.6°C | 84 mm | 4.8 | 12 h 20 | 66 | Strong coverage |
| October | 24.6°C | 11.1°C | 93 mm | 5.3 | 11 h 17 | 81 | Strong coverage |
| November | 18.4°C | 4.6°C | 48 mm | 4.1 | 10 h 23 | 60 | Strong coverage |
| December | 13°C | -0.2°C | 52 mm | 3.9 | 9 h 56 | 33 | 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 | 33.3°C31 Jan 1911 | -18.9°C12 Jan 1912 | 87 mm21 Jan 1916 | 137 mm1916 · driest 0 mm in 1912 | 100 |
| February | 34.4°C24 Feb 1996 | -21.7°C16 Feb 2021 | 83 mm21 Feb 2018 | 216 mm2001 · driest 0 mm in 1926 | 101 |
| March | 37.8°C31 Mar 1974 | -12.8°C4 Mar 2014 | 102 mm27 Mar 1977 | 220 mm2007 · driest 0 mm in 1925 | 100 |
| April | 40.6°C18 Apr 1925 | -5.6°C13 Apr 1997 | 160 mm20 Apr 2025 | 299 mm2025 · driest 4 mm in 1903 | 101 |
| May | 41.7°C29 May 1927 | 0.6°C3 May 2013 | 260 mm16 May 1989 | 550 mm2015 · driest 9 mm in 1996 | 101 |
| June | 46.1°C28 Jun 1980 | 7.2°C1 Jun 1903 | 138 mm18 Jun 2015 | 257 mm1989 · driest 2 mm in 1901 | 99 |
| July | 45.0°C15 Jul 1978 | 11.7°C10 Jul 1905 | 148 mm30 Jul 1973 | 214 mm2016 · driest 0 mm in 1993 | 100 |
| August | 43.9°C6 Aug 1956 | 11.1°C31 Aug 1915 | 122 mm13 Aug 1909 | 201 mm2022 · driest 0 mm in 2000 | 99 |
| September | 42.8°C9 Sep 2023 | 2.8°C24 Sep 1989 | 153 mm21 Sep 1900 | 307 mm1900 · driest 0 mm in 1956 | 99 |
| October | 39.4°C4 Oct 1898 | -7.8°C30 Oct 1917 | 152 mm13 Oct 1981 | 382 mm1981 · driest 0 mm in 1921 | 99 |
| November | 32.8°C3 Nov 2017 | -10.6°C18 Nov 1903 | 114 mm18 Nov 1964 | 263 mm2024 · driest 0 mm in 1955 | 98 |
| December | 31.1°C24 Dec 1955 | -23.9°C23 Dec 1989 | 69 mm19 Dec 1956 | 155 mm1926 · driest 0 mm in 1996 | 98 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 19 | 2 |
| February | 2 | <1 | 13 | 2 |
| March | 7 | 1 | 5 | 2 |
| April | 15 | 3 | <1 | 2 |
| May | 24 | 9 | 0 | 4 |
| June | 29 | 23 | 0 | 3 |
| July | 30 | 28 | 0 | 2 |
| August | 30 | 28 | 0 | 2 |
| September | 27 | 18 | 0 | 2 |
| October | 16 | 5 | <1 | 3 |
| November | 4 | <1 | 7 | 2 |
| December | <1 | 0 | 17 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 17% | 12% | 4% | 9% | 9.2–15.9°C |
| February | 28% | 16% | 6% | 11% | 11.2–19.0°C |
| March | 50% | 16% | 7% | 13% | 16.8–24.4°C |
| April | 69% | 20% | 9% | 19% | 22.2–26.8°C |
| May | 75% | 23% | 12% | 24% | 25.7–30.4°C |
| June | 82% | 18% | 9% | 15% | 30.3–35.2°C |
| July | 87% | 13% | 6% | 9% | 32.8–38.2°C |
| August | 85% | 15% | 6% | 13% | 32.7–37.9°C |
| September | 83% | 17% | 8% | 14% | 28.4–33.9°C |
| October | 75% | 16% | 8% | 13% | 23.1–28.1°C |
| November | 46% | 14% | 5% | 10% | 16.1–21.6°C |
| December | 18% | 12% | 5% | 7% | 10.4–16.7°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