September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Flinn: typically 26.5°C by day, 15.6°C at night, with 76 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
July · June · August
October · April · November
The weakest month is January, scoring 5 against September’s 82 — days reach only 4.4°C, 20° 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 | 4.4°C | -5.5°C | 22 mm | 3 | 9 h 43 | 5 | Good coverage |
| February | 6.1°C | -4.3°C | 34 mm | 4.2 | 10 h 40 | 5 | Good coverage |
| March | 13.6°C | 2.6°C | 64 mm | 6.4 | 11 h 50 | 36 | Good coverage |
| April | 18.9°C | 7.7°C | 103 mm | 9 | 13 h 10 | 55 | Good coverage |
| May | 23.8°C | 13.2°C | 150 mm | 9.5 | 14 h 17 | 74 | Good coverage |
| June | 29.4°C | 18.9°C | 124 mm | 8.5 | 14 h 53 | 58 | Good coverage |
| July | 31.4°C | 21°C | 108 mm | 6.5 | 14 h 39 | 51 | Good coverage |
| August | 30.5°C | 19.9°C | 129 mm | 7.5 | 13 h 41 | 53 | Good coverage |
| September | 26.5°C | 15.6°C | 76 mm | 6.2 | 12 h 24 | 82 | Good coverage |
| October | 19.3°C | 8.4°C | 88 mm | 7.1 | 11 h 07 | 61 | Good coverage |
| November | 12.7°C | 2.4°C | 44 mm | 4.4 | 9 h 59 | 38 | Good coverage |
| December | 6.4°C | -3.1°C | 36 mm | 3.8 | 9 h 27 | 8 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.9°C28 Jan 2013 | -22.7°C14 Jan 2024 | 41 mm29 Jan 2013 | 65 mm2005 · driest 0 mm in 2009 | 24 |
| February | 26.1°C27 Feb 2024 | -23.8°C16 Feb 2021 | 40 mm3 Feb 2012 | 70 mm2008 · driest 1 mm in 2006 | 24 |
| March | 33.3°C21 Mar 2026 | -19.9°C3 Mar 2014 | 85 mm4 Mar 2004 | 152 mm2004 · driest 20 mm in 2015 | 24 |
| April | 33.3°C25 Apr 2012 | -7.1°C4 Apr 2018 | 69 mm29 Apr 2017 | 200 mm2026 · driest 20 mm in 2018 | 25 |
| May | 34.4°C28 May 2018 | -1.1°C2 May 2005 | 116 mm19 May 2004 | 271 mm2002 · driest 27 mm in 2014 | 25 |
| June | 39.4°C28 Jun 2012 | 7.8°C1 Jun 2012 | 99 mm4 Jun 2005 | 234 mm2014 · driest 11 mm in 2018 | 25 |
| July | 41.7°C29 Jul 2012 | 11.7°C18 Jul 2009 | 93 mm21 Jul 2019 | 229 mm2020 · driest 4 mm in 2014 | 25 |
| August | 42.8°C2 Aug 2011 | 10.0°C12 Aug 2004 | 110 mm5 Aug 2017 | 288 mm2017 · driest 20 mm in 2025 | 24 |
| September | 37.8°C1 Sep 2011 | 3.3°C29 Sep 2003 | 84 mm22 Sep 2019 | 164 mm2019 · driest 13 mm in 2022 | 24 |
| October | 34.4°C3 Oct 2006 | -5.5°C19 Oct 2022 | 83 mm8 Oct 2018 | 254 mm2018 · driest 4 mm in 2011 | 24 |
| November | 27.2°C8 Nov 2006 | -12.7°C12 Nov 2019 | 63 mm4 Nov 2022 | 168 mm2015 · driest 5 mm in 2017 | 24 |
| December | 23.3°C15 Dec 2021 | -21.6°C22 Dec 2022 | 46 mm13 Dec 2015 | 89 mm2003 · driest 0 mm in 2022 | 24 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 25 | <1 |
| February | <1 | 0 | 22 | <1 |
| March | 2 | <1 | 11 | 2 |
| April | 5 | <1 | 3 | 3 |
| May | 14 | 3 | <1 | 5 |
| June | 27 | 14 | 0 | 4 |
| July | 30 | 21 | 0 | 3 |
| August | 28 | 18 | 0 | 4 |
| September | 20 | 8 | 0 | 2 |
| October | 6 | 1 | 2 | 3 |
| November | <1 | 0 | 10 | 1 |
| December | 0 | 0 | 22 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 1% | 10% | 2% | 3% | 1.7–6.8°C |
| February | 6% | 13% | 3% | 7% | 2.0–12.0°C |
| March | 20% | 21% | 6% | 20% | 11.3–18.1°C |
| April | 35% | 31% | 11% | 39% | 16.5–21.3°C |
| May | 55% | 31% | 14% | 36% | 22.2–25.7°C |
| June | 73% | 27% | 12% | 27% | 27.9–31.5°C |
| July | 78% | 22% | 10% | 15% | 29.3–32.9°C |
| August | 77% | 23% | 11% | 24% | 28.1–32.7°C |
| September | 78% | 19% | 8% | 18% | 24.2–29.2°C |
| October | 43% | 22% | 8% | 22% | 17.0–22.6°C |
| November | 14% | 15% | 5% | 9% | 10.9–14.9°C |
| December | 2% | 12% | 3% | 6% | 4.3–9.6°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