September
September · June · July
United States · 1991–2020
September leads for comfortable weather in Hettinger: typically 23.7°C by day, 5.8°C at night, with 48 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · July
July · August · June
September · May · June
The weakest month is January, scoring 5 against September’s 79 — days reach only -1.5°C, 25° below the 24°C the score treats as ideal, and nights drop to -14.9°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 | -1.5°C | -14.9°C | 7 mm | 2.1 | 9 h 01 | 5 | Good coverage |
| February | -0.9°C | -14.7°C | 12 mm | 3.2 | 10 h 16 | 5 | Good coverage |
| March | 6.2°C | -8.3°C | 24 mm | 4 | 11 h 45 | 5 | Good coverage |
| April | 13.2°C | -2.8°C | 39 mm | 6.2 | 13 h 28 | 29 | Good coverage |
| May | 18.8°C | 3.4°C | 75 mm | 9.2 | 14 h 55 | 51 | Good coverage |
| June | 25.2°C | 9.2°C | 72 mm | 9 | 15 h 44 | 75 | Good coverage |
| July | 30.1°C | 12.7°C | 46 mm | 5.9 | 15 h 24 | 72 | Good coverage |
| August | 29°C | 10.6°C | 54 mm | 6 | 14 h 09 | 70 | Good coverage |
| September | 23.7°C | 5.8°C | 48 mm | 5.4 | 12 h 29 | 79 | Good coverage |
| October | 14.1°C | -1.7°C | 41 mm | 5.2 | 10 h 50 | 35 | Good coverage |
| November | 8°C | -7.6°C | 11 mm | 2 | 9 h 23 | 6 | Good coverage |
| December | 0.3°C | -13.2°C | 12 mm | 3.2 | 8 h 40 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C9 Jan 2002 | -41.7°C1 Jan 2018 | 11 mm2 Jan 2006 | 29 mm2011 · driest 0 mm in 2007 | 25 |
| February | 21.1°C28 Feb 2016 | -41.7°C19 Feb 2025 | 18 mm10 Feb 2009 | 45 mm2009 · driest 0 mm in 2022 | 24 |
| March | 27.8°C19 Mar 2012 | -28.9°C1 Mar 2009 | 64 mm18 Mar 2003 | 80 mm2003 · driest 0 mm in 2026 | 25 |
| April | 32.8°C25 Apr 2012 | -21.1°C2 Apr 2014 | 36 mm28 Apr 2012 | 90 mm2016 · driest 4 mm in 2004 | 25 |
| May | 34.4°C13 May 2025 | -10.6°C3 May 2005 | 86 mm12 May 2023 | 198 mm2013 · driest 17 mm in 2020 | 25 |
| June | 42.8°C30 Jun 2002 | -2.8°C18 Jun 2004 | 60 mm27 Jun 2019 | 144 mm2023 · driest 4 mm in 2017 | 24 |
| July | 42.8°C13 Jul 2026 | 2.8°C15 Jul 2014 | 53 mm6 Jul 2012 | 113 mm2001 · driest 1 mm in 2014 | 26 |
| August | 40.0°C8 Aug 2001 | -2.2°C24 Aug 2015 | 60 mm12 Aug 2019 | 97 mm2023 · driest 3 mm in 2001 | 25 |
| September | 38.9°C3 Sep 2024 | -5.0°C30 Sep 2003 | 81 mm11 Sep 2003 | 132 mm2003 · driest 4 mm in 2021 | 23 |
| October | 33.9°C2 Oct 2005 | -20.6°C31 Oct 2023 | 62 mm5 Oct 2013 | 154 mm2013 · driest 1 mm in 2017 | 24 |
| November | 25.0°C6 Nov 2020 | -31.1°C14 Nov 2014 | 59 mm6 Nov 2008 | 66 mm2008 · driest 0 mm in 2006 | 24 |
| December | 20.6°C2 Dec 2021 | -37.2°C31 Dec 2017 | 27 mm26 Dec 2009 | 50 mm2009 · driest 0 mm in 2023 | 22 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 4 |
| February | 0 | 0 | 25 | <1 | 4 |
| March | <1 | 0 | 27 | <1 | 3 |
| April | 1 | <1 | 19 | <1 | 2 |
| May | 5 | <1 | 7 | 2 | <1 |
| June | 16 | 5 | <1 | 2 | 0 |
| July | 25 | 15 | 0 | 2 | 0 |
| August | 22 | 13 | <1 | 2 | 0 |
| September | 13 | 6 | 3 | 1 | 0 |
| October | 3 | <1 | 19 | 1 | 1 |
| November | <1 | 0 | 27 | <1 | 2 |
| December | 0 | 0 | 29 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 8% | <1% | 2% | -5.1–2.0°C |
| February | <1% | 10% | <1% | 4% | -7.2–5.7°C |
| March | 7% | 12% | 1% | 7% | -0.4–11.9°C |
| April | 17% | 21% | 3% | 20% | 10.3–16.4°C |
| May | 41% | 28% | 8% | 37% | 16.5–22.1°C |
| June | 65% | 29% | 8% | 34% | 22.9–28.4°C |
| July | 77% | 22% | 5% | 18% | 27.5–33.6°C |
| August | 79% | 19% | 6% | 10% | 26.6–31.2°C |
| September | 69% | 17% | 4% | 17% | 22.3–26.6°C |
| October | 28% | 16% | 4% | 11% | 9.5–18.2°C |
| November | 7% | 6% | <1% | 3% | 4.7–11.8°C |
| December | <1% | 10% | <1% | 4% | -5.3–4.3°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