August
August · June · July
United States · 1991–2020
August leads for comfortable weather in West Salem: typically 25.5°C by day, 15.7°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.
August · June · July
July · August · June
September · May · October
The weakest month is January, scoring 5 against August’s 79 — days reach only -4.3°C, 28° 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 | -4.3°C | -12.1°C | 26 mm | 5.9 | 9 h 14 | 5 | Good coverage |
| February | -2.6°C | -11.2°C | 31 mm | 5.7 | 10 h 24 | 5 | Good coverage |
| March | 5°C | -4°C | 51 mm | 7.6 | 11 h 47 | 5 | Good coverage |
| April | 12.9°C | 2.5°C | 97 mm | 9.5 | 13 h 22 | 26 | Good coverage |
| May | 19.2°C | 8.8°C | 132 mm | 12 | 14 h 43 | 51 | Good coverage |
| June | 24.1°C | 14.4°C | 150 mm | 11.3 | 15 h 27 | 75 | Good coverage |
| July | 26.6°C | 16.9°C | 106 mm | 7.4 | 15 h 09 | 74 | Good coverage |
| August | 25.5°C | 15.7°C | 110 mm | 8 | 14 h | 79 | Good coverage |
| September | 21.6°C | 11.5°C | 106 mm | 8.3 | 12 h 27 | 71 | Good coverage |
| October | 13.8°C | 4.5°C | 78 mm | 7.6 | 10 h 55 | 37 | Good coverage |
| November | 6°C | -1.8°C | 43 mm | 6.2 | 9 h 35 | 6 | Good coverage |
| December | -2.2°C | -9.3°C | 43 mm | 7.1 | 8 h 55 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C30 Jan 2025 | -35.0°C30 Jan 2019 | 31 mm8 Jan 2026 | 67 mm2017 · driest 2 mm in 2025 | 26 |
| February | 18.9°C27 Feb 2024 | -28.3°C7 Feb 2021 | 27 mm27 Feb 2023 | 70 mm2019 · driest 7 mm in 2024 | 27 |
| March | 27.2°C17 Mar 2012 | -26.1°C4 Mar 2019 | 48 mm31 Mar 2023 | 121 mm2016 · driest 17 mm in 2015 | 27 |
| April | 30.6°C16 Apr 2002 | -12.8°C7 Apr 2018 | 49 mm9 Apr 2013 | 196 mm2008 · driest 30 mm in 2021 | 27 |
| May | 33.9°C27 May 2018 | -3.9°C3 May 2013 | 65 mm18 May 2000 | 269 mm2004 · driest 35 mm in 2026 | 27 |
| June | 33.9°C24 Jun 2009 | 3.9°C1 Jun 2015 | 79 mm26 Jun 2021 | 265 mm2025 · driest 48 mm in 2005 | 27 |
| July | 35.6°C6 Jul 2012 | 7.8°C28 Jul 2013 | 83 mm19 Jul 2017 | 240 mm2017 · driest 24 mm in 2013 | 27 |
| August | 36.1°C23 Aug 2023 | 6.7°C21 Aug 2004 | 193 mm19 Aug 2007 | 432 mm2007 · driest 26 mm in 2003 | 26 |
| September | 33.9°C3 Sep 2023 | 0.6°C16 Sep 2011 | 77 mm23 Sep 2010 | 281 mm2016 · driest 25 mm in 2009 | 26 |
| October | 30.6°C1 Oct 2023 | -7.8°C27 Oct 2020 | 70 mm6 Oct 2017 | 221 mm2017 · driest 18 mm in 2005 | 25 |
| November | 22.8°C2 Nov 2022 | -16.7°C12 Nov 2019 | 39 mm3 Nov 2024 | 98 mm2024 · driest 6 mm in 2007 | 24 |
| December | 18.3°C15 Dec 2021 | -27.2°C18 Dec 2016 | 48 mm13 Dec 2015 | 137 mm2015 · driest 11 mm in 2002 | 26 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 10 |
| February | 0 | 0 | 27 | <1 | 9 |
| March | <1 | 0 | 24 | 2 | 5 |
| April | 1 | <1 | 11 | 3 | 3 |
| May | 5 | <1 | <1 | 5 | <1 |
| June | 14 | 2 | 0 | 5 | 0 |
| July | 23 | 5 | 0 | 3 | 0 |
| August | 19 | 3 | 0 | 3 | 0 |
| September | 9 | 1 | 0 | 4 | 0 |
| October | 2 | 0 | 6 | 2 | 1 |
| November | 0 | 0 | 20 | 1 | 4 |
| December | 0 | 0 | 30 | 1 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | 2% | 18% | -7.2–-1.7°C |
| February | 0% | 19% | 3% | 15% | -7.1–2.2°C |
| March | 3% | 24% | 6% | 31% | 1.8–9.5°C |
| April | 13% | 32% | 11% | 44% | 10.1–15.2°C |
| May | 34% | 37% | 13% | 49% | 17.5–21.8°C |
| June | 58% | 37% | 16% | 51% | 22.8–26.4°C |
| July | 73% | 25% | 11% | 27% | 25.0–28.0°C |
| August | 72% | 25% | 10% | 27% | 24.3–26.8°C |
| September | 52% | 26% | 11% | 28% | 19.3–23.8°C |
| October | 17% | 24% | 7% | 24% | 11.0–16.6°C |
| November | 3% | 21% | 4% | 22% | 1.8–9.4°C |
| December | 0% | 23% | 3% | 22% | -5.3–1.4°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