September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Altura: typically 25.2°C by day, 5.9°C at night, with 46 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
May · October · September
The weakest month is January, scoring 5 against September’s 75 — days reach only 3.8°C, 20° below the 24°C the score treats as ideal, and nights drop to -11.6°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 | 3.8°C | -11.6°C | 25 mm | 5.4 | 9 h 52 | 5 | Good coverage |
| February | 6.7°C | -9°C | 26 mm | 4.8 | 10 h 46 | 5 | Good coverage |
| March | 12.9°C | -5.5°C | 19 mm | 3.7 | 11 h 51 | 26 | Good coverage |
| April | 17.5°C | -2.4°C | 23 mm | 3.9 | 13 h 06 | 46 | Good coverage |
| May | 22.1°C | 2.1°C | 19 mm | 3.8 | 14 h 08 | 70 | Good coverage |
| June | 28.6°C | 6.9°C | 9 mm | 1.8 | 14 h 42 | 70 | Good coverage |
| July | 30.9°C | 11.5°C | 39 mm | 7.4 | 14 h 29 | 66 | Good coverage |
| August | 29.3°C | 10.1°C | 43 mm | 7.4 | 13 h 35 | 69 | Good coverage |
| September | 25.2°C | 5.9°C | 46 mm | 6 | 12 h 22 | 75 | Good coverage |
| October | 18.5°C | -0.6°C | 32 mm | 5.4 | 11 h 10 | 52 | Good coverage |
| November | 11.4°C | -6.1°C | 23 mm | 4 | 10 h 07 | 19 | Good coverage |
| December | 4.2°C | -10.8°C | 25 mm | 5.2 | 9 h 37 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.7°C27 Jan 2015 | -29.4°C1 Jan 2011 | 28 mm6 Jan 2008 | 74 mm2005 · driest 0 mm in 2011 | 26 |
| February | 19.4°C28 Feb 2026 | -27.2°C3 Feb 2011 | 38 mm4 Feb 2008 | 77 mm2005 · driest 0 mm in 2006 | 26 |
| March | 28.9°C21 Mar 2026 | -20.0°C3 Mar 2002 | 20 mm2 Mar 2014 | 67 mm2023 · driest 0 mm in 2026 | 26 |
| April | 27.8°C24 Apr 2012 | -11.7°C6 Apr 2023 | 27 mm4 Apr 2004 | 87 mm2004 · driest 1 mm in 2020 | 26 |
| May | 35.0°C31 May 2002 | -7.8°C2 May 2011 | 26 mm2 May 2007 | 65 mm2015 · driest 0 mm in 2024 | 25 |
| June | 36.1°C17 Jun 2021 | -1.7°C12 Jun 2008 | 17 mm11 Jun 2009 | 47 mm2022 · driest 0 mm in 2013 | 25 |
| July | 36.7°C2 Jul 2002 | 2.8°C1 Jul 2020 | 37 mm31 Jul 2022 | 106 mm2022 · driest 2 mm in 2025 | 25 |
| August | 35.0°C1 Aug 2002 | 2.8°C28 Aug 2014 | 40 mm6 Aug 2012 | 82 mm2010 · driest 5 mm in 2020 | 25 |
| September | 33.9°C7 Sep 2022 | -3.3°C28 Sep 2013 | 53 mm10 Sep 2003 | 118 mm2013 · driest 15 mm in 2001 | 25 |
| October | 28.9°C1 Oct 2024 | -15.6°C31 Oct 2019 | 40 mm19 Oct 2005 | 105 mm2025 · driest 1 mm in 2019 | 25 |
| November | 22.2°C1 Nov 2008 | -19.4°C30 Nov 2010 | 34 mm28 Nov 2008 | 55 mm2016 · driest 3 mm in 2010 | 25 |
| December | 16.7°C1 Dec 2003 | -25.0°C9 Dec 2013 | 31 mm8 Dec 2007 | 91 mm2007 · driest 1 mm in 2017 | 25 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 6 |
| February | 0 | 0 | 26 | <1 | 6 |
| March | <1 | 0 | 28 | <1 | 3 |
| April | 1 | 0 | 24 | <1 | 1 |
| May | 11 | 1 | 8 | <1 | <1 |
| June | 26 | 12 | <1 | <1 | 0 |
| July | 30 | 22 | 0 | <1 | 0 |
| August | 29 | 15 | 0 | 1 | 0 |
| September | 19 | 3 | 2 | 2 | 0 |
| October | 2 | 0 | 17 | 1 | <1 |
| November | 0 | 0 | 27 | <1 | 2 |
| December | 0 | 0 | 29 | <1 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | <1% | 15% | 1.1–6.9°C |
| February | 0% | 16% | 2% | 14% | 3.6–10.0°C |
| March | 11% | 12% | 1% | 13% | 10.5–15.3°C |
| April | 36% | 12% | 2% | 7% | 16.3–19.1°C |
| May | 70% | 11% | 2% | 9% | 19.4–24.7°C |
| June | 91% | 8% | 1% | 8% | 26.5–30.2°C |
| July | 77% | 23% | 4% | 32% | 30.0–32.7°C |
| August | 77% | 24% | 3% | 23% | 27.8–31.0°C |
| September | 76% | 20% | 5% | 23% | 24.2–26.8°C |
| October | 40% | 17% | 4% | 14% | 16.3–20.8°C |
| November | 2% | 13% | 2% | 7% | 9.1–13.8°C |
| December | 0% | 16% | 2% | 15% | 2.4–7.5°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