September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Avondale: typically 27.2°C by day, 14.9°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · June · July
October · April · May
The weakest month is January, scoring 5 against September’s 79 — days reach only 8.2°C, 16° below the 24°C the score treats as ideal, and nights drop to -2.4°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 | 8.2°C | -2.4°C | 106 mm | 9.3 | 9 h 56 | 5 | Strong coverage |
| February | 10.8°C | -1°C | 116 mm | 10 | 10 h 48 | 10 | Strong coverage |
| March | 15.7°C | 2.5°C | 124 mm | 10.4 | 11 h 51 | 31 | Strong coverage |
| April | 21°C | 7.3°C | 114 mm | 9.5 | 13 h 04 | 59 | Strong coverage |
| May | 25.1°C | 12.4°C | 98 mm | 9.9 | 14 h 04 | 77 | Strong coverage |
| June | 28.7°C | 17.1°C | 116 mm | 9.7 | 14 h 37 | 63 | Strong coverage |
| July | 30.3°C | 19.3°C | 127 mm | 10.5 | 14 h 24 | 52 | Strong coverage |
| August | 29.9°C | 18.5°C | 83 mm | 7.9 | 13 h 32 | 63 | Strong coverage |
| September | 27.2°C | 14.9°C | 81 mm | 7.1 | 12 h 22 | 79 | Strong coverage |
| October | 21.5°C | 8.2°C | 71 mm | 7.2 | 11 h 12 | 71 | Strong coverage |
| November | 15°C | 2.2°C | 85 mm | 7.6 | 10 h 11 | 36 | Strong coverage |
| December | 9.7°C | -0.6°C | 119 mm | 10 | 9 h 42 | 7 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C12 Jan 2020 | -28.3°C21 Jan 1985 | 84 mm16 Jan 2013 | 290 mm2013 · driest 28 mm in 1986 | 44 |
| February | 26.7°C21 Feb 2018 | -25.0°C5 Feb 1996 | 84 mm6 Feb 2020 | 336 mm2019 · driest 36 mm in 2007 | 44 |
| March | 28.9°C23 Mar 2026 | -17.8°C15 Mar 1993 | 83 mm30 Mar 2003 | 247 mm1994 · driest 43 mm in 2016 | 44 |
| April | 32.2°C30 Apr 2017 | -6.1°C1 Apr 1987 | 79 mm13 Apr 2020 | 267 mm1998 · driest 27 mm in 2021 | 44 |
| May | 33.3°C19 May 2026 | -0.6°C8 May 1989 | 88 mm7 May 1984 | 211 mm1984 · driest 17 mm in 2007 | 44 |
| June | 39.4°C30 Jun 2012 | 5.0°C1 Jun 1984 | 83 mm28 Jun 2026 | 237 mm2011 · driest 13 mm in 2022 | 44 |
| July | 39.4°C1 Jul 2012 | 9.4°C2 Jul 1988 | 89 mm31 Jul 1982 | 259 mm2014 · driest 38 mm in 1995 | 45 |
| August | 37.8°C23 Aug 2007 | 7.8°C29 Aug 1986 | 96 mm18 Aug 2021 | 216 mm2021 · driest 6 mm in 2007 | 44 |
| September | 35.6°C3 Sep 2024 | 1.7°C22 Sep 1983 | 91 mm27 Sep 2009 | 216 mm2024 · driest 3 mm in 2019 | 44 |
| October | 35.0°C4 Oct 2019 | -4.4°C22 Oct 1987 | 65 mm29 Oct 2020 | 191 mm2014 · driest 2 mm in 2000 | 44 |
| November | 28.9°C2 Nov 2016 | -10.0°C22 Nov 2008 | 62 mm11 Nov 2009 | 161 mm2003 · driest 2 mm in 2023 | 44 |
| December | 25.6°C3 Dec 1982 | -20.0°C25 Dec 1983 | 75 mm4 Dec 1993 | 218 mm1991 · driest 40 mm in 2006 | 44 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 15 | 3 | 2 |
| February | <1 | 0 | 13 | 4 | 2 |
| March | 2 | 0 | 9 | 4 | <1 |
| April | 8 | <1 | 2 | 4 | <1 |
| May | 18 | 3 | 0 | 3 | 0 |
| June | 26 | 12 | 0 | 4 | 0 |
| July | 29 | 19 | 0 | 4 | 0 |
| August | 29 | 17 | 0 | 2 | 0 |
| September | 21 | 8 | 0 | 3 | 0 |
| October | 8 | <1 | 2 | 2 | 0 |
| November | <1 | 0 | 9 | 3 | <1 |
| December | 0 | 0 | 13 | 4 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 30% | 11% | 37% | 4.7–10.9°C |
| February | 5% | 36% | 14% | 49% | 8.5–14.0°C |
| March | 25% | 33% | 13% | 44% | 13.0–18.6°C |
| April | 47% | 32% | 11% | 39% | 19.0–22.8°C |
| May | 60% | 32% | 12% | 37% | 23.0–27.1°C |
| June | 70% | 30% | 11% | 39% | 27.1–30.6°C |
| July | 67% | 33% | 13% | 40% | 28.7–32.2°C |
| August | 73% | 27% | 9% | 28% | 28.7–31.4°C |
| September | 74% | 24% | 9% | 22% | 25.3–29.3°C |
| October | 54% | 23% | 7% | 25% | 19.7–23.7°C |
| November | 19% | 27% | 10% | 32% | 11.8–18.5°C |
| December | 3% | 32% | 13% | 39% | 7.1–12.7°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