April
April · October · March
United States · 1991–2020
April leads for comfortable weather in Sloan: typically 25.9°C by day, 11.9°C at night, with 8 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · March
May · September · October
November · March · February
The weakest month is July, scoring 24 against April’s 88 — days average 40.7°C, 17° above 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 | 14.8°C | 2.8°C | 14 mm | 2.1 | 9 h 58 | 48 | Good coverage |
| February | 16.9°C | 4.5°C | 22 mm | 2.9 | 10 h 49 | 58 | Good coverage |
| March | 22°C | 8.5°C | 7 mm | 1.5 | 11 h 51 | 82 | Good coverage |
| April | 25.9°C | 11.9°C | 8 mm | 1.2 | 13 h 03 | 88 | Good coverage |
| May | 31.7°C | 17.2°C | 2 mm | 0.3 | 14 h 03 | 70 | Good coverage |
| June | 38.1°C | 23°C | 2 mm | 0.3 | 14 h 35 | 39 | Good coverage |
| July | 40.7°C | 26.5°C | 12 mm | 1.9 | 14 h 22 | 24 | Good coverage |
| August | 39.7°C | 25.4°C | 11 mm | 1.6 | 13 h 31 | 30 | Good coverage |
| September | 35.1°C | 20.5°C | 11 mm | 1.4 | 12 h 22 | 53 | Strong coverage |
| October | 27.2°C | 13.2°C | 10 mm | 1.7 | 11 h 13 | 86 | Strong coverage |
| November | 19.7°C | 6.7°C | 8 mm | 1.1 | 10 h 13 | 71 | Strong coverage |
| December | 13.7°C | 2.3°C | 11 mm | 1.7 | 9 h 44 | 43 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C17 Jan 2011 | -7.2°C14 Jan 2007 | 35 mm9 Jan 2018 | 56 mm2005 · driest 0 mm in 2000 | 30 |
| February | 27.8°C29 Feb 2016 | -4.4°C2 Feb 2011 | 29 mm14 Feb 2019 | 70 mm1998 · driest 0 mm in 2022 | 30 |
| March | 36.1°C25 Mar 2026 | -3.3°C3 Mar 2002 | 22 mm12 Mar 2020 | 48 mm2020 · driest 0 mm in 2026 | 30 |
| April | 38.3°C29 Apr 2020 | 0.6°C2 Apr 1999 | 24 mm30 Apr 2016 | 59 mm2016 · driest 0 mm in 2021 | 30 |
| May | 42.8°C27 May 2020 | 6.1°C14 May 1998 | 13 mm9 May 2019 | 27 mm2025 · driest 0 mm in 2010 | 30 |
| June | 48.3°C16 Jun 2021 | 8.9°C4 Jun 1999 | 17 mm30 Jun 2016 | 18 mm2016 · driest 0 mm in 2001 | 30 |
| July | 48.3°C9 Jul 2021 | 15.0°C1 Jul 1997 | 51 mm8 Jul 1999 | 69 mm1999 · driest 0 mm in 2026 | 30 |
| August | 47.2°C19 Aug 2020 | 16.7°C30 Aug 2010 | 53 mm22 Aug 2012 | 67 mm2012 · driest 0 mm in 2002 | 29 |
| September | 46.7°C6 Sep 2020 | 10.0°C24 Sep 2017 | 34 mm1 Sep 1997 | 72 mm1997 · driest 0 mm in 2006 | 30 |
| October | 39.4°C4 Oct 2024 | -0.6°C31 Oct 2019 | 30 mm10 Oct 2025 | 42 mm2005 · driest 0 mm in 2022 | 30 |
| November | 30.6°C3 Nov 2020 | -3.9°C26 Nov 2010 | 21 mm21 Nov 2013 | 40 mm2004 · driest 0 mm in 2017 | 30 |
| December | 25.6°C1 Dec 2021 | -8.3°C22 Dec 1998 | 31 mm29 Dec 2004 | 57 mm2004 · driest 0 mm in 2017 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 6 | <1 |
| February | 1 | 0 | 3 | <1 |
| March | 11 | 2 | <1 | <1 |
| April | 18 | 8 | 0 | <1 |
| May | 28 | 21 | 0 | 0 |
| June | 30 | 29 | 0 | 0 |
| July | 31 | 31 | 0 | <1 |
| August | 31 | 31 | 0 | <1 |
| September | 29 | 27 | 0 | <1 |
| October | 22 | 10 | 0 | <1 |
| November | 5 | <1 | 1 | <1 |
| December | 0 | 0 | 8 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 7% | 7% | 1% | 5% | 12.8–16.5°C |
| February | 30% | 9% | 3% | 8% | 14.9–19.8°C |
| March | 63% | 5% | <1% | 1% | 19.5–25.5°C |
| April | 86% | 3% | <1% | 2% | 23.2–28.1°C |
| May | 98% | 1% | <1% | <1% | 28.6–34.2°C |
| June | 99% | 1% | <1% | 0% | 35.3–41.0°C |
| July | 93% | 7% | <1% | 2% | 39.3–42.6°C |
| August | 95% | 5% | <1% | 1% | 37.9–41.5°C |
| September | 95% | 5% | 1% | 2% | 33.3–37.6°C |
| October | 89% | 5% | 1% | 3% | 25.0–30.4°C |
| November | 46% | 4% | 1% | <1% | 16.6–21.5°C |
| December | 6% | 5% | <1% | 2% | 12.5–16.2°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