September
September · May · August
United States · 1991–2020
September leads for comfortable weather in Church Rock: typically 26.3°C by day, 8.7°C at night, with 29 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · August
August · July · June
October · May · April
The weakest month is January, scoring 5 against September’s 80 — days reach only 6.8°C, 17° below the 24°C the score treats as ideal, and nights drop to -8.5°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 | 6.8°C | -8.5°C | 23 mm | 4.4 | 10 h | 5 | Good coverage |
| February | 9.2°C | -6.2°C | 22 mm | 3.9 | 10 h 50 | 12 | Good coverage |
| March | 14.2°C | -3°C | 17 mm | 3.1 | 11 h 52 | 35 | Good coverage |
| April | 18.3°C | 0.2°C | 16 mm | 3.1 | 13 h 02 | 54 | Good coverage |
| May | 22.9°C | 4.8°C | 18 mm | 2.7 | 14 h 01 | 78 | Good coverage |
| June | 30°C | 10.2°C | 6 mm | 1.2 | 14 h 33 | 72 | Good coverage |
| July | 31.1°C | 14.5°C | 50 mm | 7.7 | 14 h 20 | 69 | Good coverage |
| August | 29.4°C | 13.2°C | 48 mm | 7.3 | 13 h 30 | 73 | Good coverage |
| September | 26.3°C | 8.7°C | 29 mm | 4.8 | 12 h 21 | 80 | Good coverage |
| October | 20.1°C | 1.9°C | 22 mm | 4.2 | 11 h 13 | 63 | Good coverage |
| November | 13.5°C | -3.9°C | 17 mm | 3.2 | 10 h 14 | 31 | Good coverage |
| December | 7.1°C | -8.2°C | 24 mm | 4.2 | 9 h 46 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.7°C4 Jan 2025 | -27.2°C1 Jan 2011 | 32 mm25 Jan 2010 | 58 mm2008 · driest 0 mm in 2014 | 23 |
| February | 21.7°C4 Feb 2025 | -30.0°C3 Feb 2011 | 19 mm19 Feb 2005 | 61 mm2005 · driest 0 mm in 2006 | 22 |
| March | 29.4°C21 Mar 2026 | -20.0°C11 Mar 2022 | 29 mm2 Mar 2014 | 43 mm2023 · driest 1 mm in 2026 | 23 |
| April | 28.9°C24 Apr 2012 | -10.0°C5 Apr 2023 | 20 mm7 Apr 2011 | 36 mm2016 · driest 0 mm in 2022 | 23 |
| May | 33.3°C23 May 2005 | -6.1°C2 May 2008 | 28 mm1 May 2016 | 51 mm2016 · driest 0 mm in 2004 | 23 |
| June | 37.2°C21 Jun 2016 | 0.0°C9 Jun 2020 | 41 mm22 Jun 2024 | 66 mm2024 · driest 0 mm in 2016 | 23 |
| July | 37.8°C18 Jul 2023 | 7.2°C1 Jul 2004 | 35 mm12 Jul 2008 | 95 mm2007 · driest 4 mm in 2023 | 22 |
| August | 35.6°C7 Aug 2025 | 5.6°C29 Aug 2016 | 34 mm7 Aug 2007 | 92 mm2010 · driest 7 mm in 2009 | 22 |
| September | 34.4°C4 Sep 2021 | -2.2°C28 Sep 2013 | 28 mm28 Sep 2017 | 54 mm2025 · driest 0 mm in 2003 | 23 |
| October | 30.6°C2 Oct 2003 | -14.4°C31 Oct 2019 | 30 mm1 Oct 2021 | 87 mm2006 · driest 0 mm in 2012 | 23 |
| November | 24.4°C3 Nov 2025 | -20.0°C30 Nov 2006 | 32 mm13 Nov 2003 | 40 mm2013 · driest 1 mm in 2017 | 23 |
| December | 18.9°C23 Dec 2025 | -22.8°C10 Dec 2013 | 25 mm17 Dec 2008 | 64 mm2008 · driest 0 mm in 2024 | 23 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 3 |
| February | 0 | 0 | 27 | <1 | 3 |
| March | <1 | 0 | 26 | <1 | 1 |
| April | 2 | 0 | 16 | <1 | <1 |
| May | 13 | 1 | 3 | <1 | <1 |
| June | 28 | 18 | <1 | <1 | 0 |
| July | 30 | 22 | 0 | 1 | 0 |
| August | 29 | 15 | 0 | 2 | 0 |
| September | 21 | 4 | <1 | <1 | 0 |
| October | 4 | <1 | 10 | <1 | <1 |
| November | 0 | 0 | 25 | <1 | 1 |
| December | 0 | 0 | 30 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 13% | 1% | 8% | 4.3–9.6°C |
| February | 1% | 14% | 2% | 10% | 6.5–12.8°C |
| March | 14% | 11% | 2% | 6% | 11.7–16.5°C |
| April | 44% | 9% | <1% | 5% | 17.2–20.0°C |
| May | 77% | 8% | 1% | 6% | 20.5–25.5°C |
| June | 94% | 5% | <1% | 2% | 28.3–31.5°C |
| July | 76% | 24% | 4% | 27% | 30.0–32.9°C |
| August | 76% | 24% | 5% | 24% | 27.6–31.2°C |
| September | 81% | 16% | 3% | 11% | 25.3–27.7°C |
| October | 56% | 13% | 3% | 11% | 17.7–22.8°C |
| November | 11% | 11% | 2% | 6% | 11.3–16.0°C |
| December | 0% | 13% | 2% | 7% | 5.7–11.3°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