September
September · October · May
United States · 1991–2020
September leads for comfortable weather in Mulvane: typically 28.6°C by day, 14.7°C at night, with 78 mm of rain. Based on measured 1991–2020 NOAA station history.
September · October · May
July · September · August
April · October · November
The weakest month is January, scoring 6 against September’s 77 — days reach only 7.1°C, 17° below the 24°C the score treats as ideal, and nights drop to -6.3°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 | 7.1°C | -6.3°C | 18 mm | 2.4 | 9 h 50 | 6 | Good coverage |
| February | 8.3°C | -4.8°C | 39 mm | 4.3 | 10 h 45 | 11 | Good coverage |
| March | 15.2°C | 1.5°C | 67 mm | 5.1 | 11 h 50 | 40 | Good coverage |
| April | 20.5°C | 6.7°C | 74 mm | 5.9 | 13 h 06 | 65 | Good coverage |
| May | 25.2°C | 12.9°C | 171 mm | 9.3 | 14 h 10 | 68 | Good coverage |
| June | 30.9°C | 18.6°C | 152 mm | 7.4 | 14 h 44 | 50 | Good coverage |
| July | 33.2°C | 20.6°C | 93 mm | 6 | 14 h 30 | 49 | Good coverage |
| August | 32.4°C | 19.5°C | 104 mm | 6.3 | 13 h 36 | 51 | Good coverage |
| September | 28.6°C | 14.7°C | 78 mm | 4.9 | 12 h 23 | 77 | Good coverage |
| October | 21.7°C | 7.2°C | 82 mm | 5.7 | 11 h 10 | 69 | Good coverage |
| November | 14.7°C | 0.9°C | 30 mm | 2.8 | 10 h 06 | 44 | Good coverage |
| December | 7.7°C | -4.9°C | 32 mm | 3.6 | 9 h 35 | 10 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.8°C9 Jan 2002 | -24.4°C21 Jan 2025 | 55 mm5 Jan 2005 | 87 mm2005 · driest 0 mm in 2017 | 27 |
| February | 27.2°C28 Feb 2024 | -28.3°C16 Feb 2021 | 47 mm21 Feb 2013 | 102 mm2001 · driest 0 mm in 2026 | 26 |
| March | 34.4°C22 Mar 2026 | -20.0°C3 Mar 2002 | 67 mm29 Mar 2017 | 175 mm2007 · driest 4 mm in 2023 | 26 |
| April | 34.4°C14 Apr 2006 | -6.7°C7 Apr 2009 | 94 mm27 Apr 2009 | 193 mm2009 · driest 9 mm in 2018 | 27 |
| May | 38.3°C5 May 2014 | -1.1°C2 May 2014 | 127 mm8 May 2019 | 434 mm2019 · driest 60 mm in 2021 | 27 |
| June | 40.6°C26 Jun 2012 | 7.8°C1 Jun 2012 | 151 mm22 Jun 2026 | 349 mm2026 · driest 14 mm in 2018 | 27 |
| July | 42.2°C31 Jul 2012 | 11.1°C28 Jul 2005 | 82 mm2 Jul 2007 | 184 mm2016 · driest 8 mm in 2010 | 26 |
| August | 42.8°C3 Aug 2011 | 8.3°C20 Aug 2012 | 158 mm20 Aug 2016 | 303 mm2016 · driest 0 mm in 2000 | 26 |
| September | 41.7°C1 Sep 2011 | 0.0°C21 Sep 2000 | 195 mm9 Sep 2016 | 395 mm2016 · driest 11 mm in 2007 | 26 |
| October | 35.6°C2 Oct 2006 | -8.9°C31 Oct 2019 | 81 mm3 Oct 2002 | 186 mm2002 · driest 18 mm in 2010 | 26 |
| November | 30.6°C9 Nov 2006 | -17.2°C18 Nov 2014 | 93 mm3 Nov 2024 | 193 mm2024 · driest 0 mm in 2003 | 26 |
| December | 25.0°C27 Dec 2025 | -22.2°C18 Dec 2016 | 48 mm20 Dec 2011 | 95 mm2011 · driest 0 mm in 2024 | 27 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 2 |
| February | <1 | 0 | 24 | 1 | 2 |
| March | 2 | <1 | 13 | 2 | <1 |
| April | 8 | 1 | 4 | 2 | <1 |
| May | 18 | 6 | <1 | 5 | 0 |
| June | 28 | 20 | 0 | 4 | 0 |
| July | 30 | 25 | 0 | 3 | 0 |
| August | 30 | 22 | 0 | 3 | 0 |
| September | 24 | 13 | 0 | 2 | 0 |
| October | 10 | 3 | 3 | 3 | 0 |
| November | 1 | 0 | 14 | 1 | <1 |
| December | 0 | 0 | 26 | 1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 8% | 2% | 3% | 3.8–9.5°C |
| February | 9% | 13% | 3% | 6% | 4.9–14.1°C |
| March | 29% | 15% | 7% | 12% | 12.3–19.2°C |
| April | 49% | 19% | 7% | 17% | 18.0–22.8°C |
| May | 62% | 29% | 15% | 32% | 23.1–27.0°C |
| June | 74% | 26% | 14% | 25% | 29.2–32.3°C |
| July | 80% | 20% | 9% | 16% | 31.3–36.1°C |
| August | 80% | 20% | 11% | 15% | 30.0–35.6°C |
| September | 82% | 16% | 6% | 12% | 26.1–31.5°C |
| October | 58% | 18% | 9% | 14% | 19.1–24.4°C |
| November | 23% | 11% | 4% | 5% | 11.7–17.0°C |
| December | 3% | 11% | 3% | 5% | 4.8–10.9°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