September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Omak: typically 25.7°C by day, 8.5°C at night, with 11 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
May · September · June
The weakest month is January, scoring 5 against September’s 83 — 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 | -5.3°C | 34 mm | 6.7 | 8 h 43 | 5 | Good coverage |
| February | 4.2°C | -4.6°C | 22 mm | 5 | 10 h 06 | 5 | Good coverage |
| March | 11.4°C | -1.2°C | 29 mm | 5 | 11 h 44 | 27 | Good coverage |
| April | 17.2°C | 1.8°C | 19 mm | 3.3 | 13 h 36 | 54 | Good coverage |
| May | 22.5°C | 6.4°C | 32 mm | 5.4 | 15 h 11 | 77 | Good coverage |
| June | 26.4°C | 10°C | 24 mm | 4.1 | 16 h 05 | 82 | Good coverage |
| July | 32.4°C | 14°C | 10 mm | 2.1 | 15 h 43 | 70 | Good coverage |
| August | 31.8°C | 13.4°C | 7 mm | 1.6 | 14 h 20 | 71 | Good coverage |
| September | 25.7°C | 8.5°C | 11 mm | 2 | 12 h 31 | 83 | Good coverage |
| October | 16°C | 2.4°C | 25 mm | 4.3 | 10 h 43 | 50 | Good coverage |
| November | 6.4°C | -2.1°C | 29 mm | 6 | 9 h 08 | 8 | Good coverage |
| December | 0.4°C | -5.5°C | 45 mm | 8.1 | 8 h 20 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C13 Jan 2014 | -24.9°C13 Jan 2024 | 21 mm18 Jan 2017 | 81 mm2018 · driest 3 mm in 2007 | 28 |
| February | 16.7°C25 Feb 2024 | -18.8°C6 Feb 2014 | 20 mm15 Feb 2017 | 63 mm1999 · driest 1 mm in 2005 | 28 |
| March | 23.9°C30 Mar 2003 | -13.2°C4 Mar 2019 | 21 mm23 Mar 2024 | 69 mm2011 · driest 1 mm in 2020 | 29 |
| April | 29.4°C23 Apr 2012 | -7.2°C24 Apr 2002 | 21 mm24 Apr 2003 | 68 mm2017 · driest 2 mm in 2007 | 29 |
| May | 35.6°C18 May 2006 | -5.5°C1 May 2008 | 34 mm16 May 2019 | 78 mm2010 · driest 0 mm in 2021 | 29 |
| June | 47.2°C29 Jun 2021 | -0.6°C9 Jun 1999 | 36 mm5 Jun 2007 | 62 mm2022 · driest 1 mm in 2025 | 29 |
| July | 42.8°C31 Jul 2021 | 3.3°C3 Jul 1999 | 45 mm20 Jul 2012 | 82 mm2012 · driest 0 mm in 2018 | 29 |
| August | 42.8°C15 Aug 2023 | 3.3°C31 Aug 2006 | 15 mm10 Aug 2013 | 34 mm2013 · driest 0 mm in 2017 | 28 |
| September | 40.0°C3 Sep 2025 | -5.6°C23 Sep 2000 | 26 mm18 Sep 2019 | 74 mm2019 · driest 0 mm in 2015 | 28 |
| October | 29.4°C2 Oct 2003 | -15.0°C31 Oct 2002 | 27 mm13 Oct 2016 | 93 mm2016 · driest 1 mm in 2002 | 28 |
| November | 20.0°C2 Nov 2018 | -21.0°C24 Nov 2010 | 24 mm20 Nov 2024 | 100 mm2024 · driest 0 mm in 2004 | 28 |
| December | 23.3°C1 Dec 2021 | -22.7°C22 Dec 2022 | 27 mm14 Dec 2002 | 111 mm2002 · driest 3 mm in 2013 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 |
| February | 0 | 0 | 25 | <1 |
| March | 0 | 0 | 20 | <1 |
| April | 1 | 0 | 11 | <1 |
| May | 10 | 3 | 2 | <1 |
| June | 19 | 7 | 0 | <1 |
| July | 30 | 22 | 0 | <1 |
| August | 29 | 22 | 0 | <1 |
| September | 17 | 7 | <1 | <1 |
| October | 1 | 0 | 10 | <1 |
| November | 0 | 0 | 20 | <1 |
| December | 0 | 0 | 28 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 22% | 2% | 26% | -1.9–2.5°C |
| February | 0% | 17% | 1% | 17% | 1.7–7.7°C |
| March | 4% | 16% | 2% | 11% | 9.1–13.9°C |
| April | 28% | 12% | 1% | 9% | 15.2–19.2°C |
| May | 65% | 16% | 2% | 15% | 19.8–25.2°C |
| June | 84% | 13% | 2% | 7% | 24.4–28.8°C |
| July | 94% | 6% | <1% | 3% | 30.6–34.3°C |
| August | 94% | 6% | <1% | 2% | 30.7–32.9°C |
| September | 87% | 7% | <1% | 4% | 24.0–28.3°C |
| October | 22% | 14% | 2% | 15% | 14.2–18.3°C |
| November | <1% | 22% | 3% | 22% | 3.9–8.3°C |
| December | <1% | 26% | 3% | 30% | -2.2–3.2°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