September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Hiline Trailer Park: typically 23.6°C by day, 7.7°C at night, with 36 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
September · May · June
The weakest month is January, scoring 5 against September’s 83 — days reach only -1.7°C, 26° below the 24°C the score treats as ideal, and nights drop to -13.6°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 | -1.7°C | -13.6°C | 11 mm | 3.5 | 8 h 44 | 5 | Good coverage |
| February | -0.1°C | -12°C | 11 mm | 3.1 | 10 h 07 | 5 | Good coverage |
| March | 7°C | -6.2°C | 13 mm | 3.5 | 11 h 44 | 5 | Good coverage |
| April | 14.9°C | 0.3°C | 35 mm | 5.3 | 13 h 35 | 41 | Good coverage |
| May | 20.5°C | 5.9°C | 64 mm | 8.4 | 15 h 11 | 63 | Good coverage |
| June | 24.9°C | 10.9°C | 66 mm | 9.7 | 16 h 04 | 79 | Good coverage |
| July | 30.7°C | 14.4°C | 40 mm | 5.1 | 15 h 43 | 74 | Strong coverage |
| August | 30.3°C | 13.3°C | 32 mm | 4.2 | 14 h 20 | 75 | Good coverage |
| September | 23.6°C | 7.7°C | 36 mm | 5.3 | 12 h 31 | 83 | Good coverage |
| October | 15.2°C | 0.7°C | 29 mm | 4.1 | 10 h 43 | 44 | Strong coverage |
| November | 6.5°C | -6.3°C | 15 mm | 3.1 | 9 h 08 | 5 | Strong coverage |
| December | -0.6°C | -12.2°C | 12 mm | 3 | 8 h 20 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.7°C7 Jan 2002 | -40.6°C14 Jan 2024 | 15 mm11 Jan 2013 | 27 mm2011 · driest 1 mm in 2023 | 30 |
| February | 17.8°C22 Feb 2002 | -38.9°C1 Feb 2011 | 13 mm17 Feb 2011 | 33 mm2018 · driest 0 mm in 2005 | 30 |
| March | 24.4°C31 Mar 2004 | -31.7°C2 Mar 2019 | 17 mm25 Mar 2019 | 33 mm2024 · driest 1 mm in 2004 | 30 |
| April | 30.6°C30 Apr 2001 | -18.9°C1 Apr 2018 | 64 mm14 Apr 2000 | 98 mm2016 · driest 5 mm in 2008 | 30 |
| May | 35.0°C27 May 2026 | -7.2°C1 May 2013 | 54 mm18 May 2019 | 150 mm2011 · driest 12 mm in 1998 | 29 |
| June | 41.1°C15 Jun 2021 | 1.7°C1 Jun 2000 | 68 mm27 Jun 1998 | 185 mm1998 · driest 15 mm in 2025 | 30 |
| July | 41.7°C12 Jul 2026 | 6.1°C16 Jul 1999 | 48 mm11 Jul 2016 | 105 mm2016 · driest 2 mm in 1996 | 31 |
| August | 41.1°C12 Aug 2018 | 1.7°C23 Aug 2015 | 86 mm24 Aug 2014 | 179 mm2014 · driest 1 mm in 2000 | 28 |
| September | 37.8°C8 Sep 2022 | -2.8°C30 Sep 2003 | 85 mm10 Sep 2005 | 94 mm2005 · driest 2 mm in 2012 | 30 |
| October | 32.2°C1 Oct 2011 | -17.2°C23 Oct 2020 | 67 mm3 Oct 2016 | 169 mm2016 · driest 2 mm in 2013 | 30 |
| November | 25.6°C12 Nov 1999 | -30.6°C26 Nov 2006 | 18 mm9 Nov 2020 | 43 mm1998 · driest 0 mm in 2009 | 30 |
| December | 18.9°C1 Dec 2021 | -37.8°C8 Dec 2013 | 17 mm27 Dec 2003 | 41 mm1998 · driest 0 mm in 2004 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | 0 | 3 |
| February | 0 | 0 | 27 | <1 | 3 |
| March | 0 | 0 | 26 | <1 | 2 |
| April | 2 | <1 | 14 | <1 | <1 |
| May | 7 | 1 | 3 | 2 | 0 |
| June | 15 | 4 | 0 | 2 | 0 |
| July | 27 | 17 | 0 | 1 | 0 |
| August | 26 | 17 | 0 | <1 | 0 |
| September | 12 | 5 | 1 | 1 | 0 |
| October | 2 | <1 | 14 | <1 | <1 |
| November | 0 | 0 | 25 | <1 | 2 |
| December | 0 | 0 | 29 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 9% | <1% | 3% | -5.5–2.1°C |
| February | 0% | 10% | <1% | 6% | -5.9–5.9°C |
| March | 5% | 11% | <1% | 7% | -0.1–12.8°C |
| April | 21% | 17% | 3% | 13% | 11.4–17.5°C |
| May | 46% | 26% | 6% | 29% | 18.3–23.5°C |
| June | 66% | 30% | 7% | 33% | 22.8–27.1°C |
| July | 82% | 17% | 4% | 12% | 28.8–33.7°C |
| August | 85% | 15% | 3% | 11% | 28.3–31.9°C |
| September | 68% | 17% | 3% | 18% | 21.3–27.7°C |
| October | 26% | 13% | 2% | 6% | 11.8–18.4°C |
| November | 4% | 10% | 1% | 5% | 1.4–11.4°C |
| December | 0% | 10% | <1% | 5% | -6.1–4.1°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