September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Julien Hill: typically 27.3°C by day, 13.1°C at night, with 79 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · September
The weakest month is January, scoring 5 against September’s 77 — days reach only 5.5°C, 18° 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 | 5.5°C | -5°C | 102 mm | 8.2 | 9 h 50 | 5 | Strong coverage |
| February | 8.3°C | -3.6°C | 94 mm | 7.8 | 10 h 45 | 5 | Strong coverage |
| March | 13.9°C | 1°C | 129 mm | 10 | 11 h 50 | 22 | Strong coverage |
| April | 20.2°C | 6.2°C | 153 mm | 10.3 | 13 h 06 | 48 | Strong coverage |
| May | 24.3°C | 11.5°C | 135 mm | 9.8 | 14 h 10 | 73 | Strong coverage |
| June | 28.7°C | 16.7°C | 113 mm | 8.1 | 14 h 44 | 66 | Strong coverage |
| July | 30.6°C | 18.7°C | 110 mm | 8 | 14 h 30 | 57 | Strong coverage |
| August | 30.4°C | 17.4°C | 83 mm | 6.5 | 13 h 36 | 65 | Strong coverage |
| September | 27.3°C | 13.1°C | 79 mm | 5.7 | 12 h 23 | 77 | Strong coverage |
| October | 21.2°C | 6.3°C | 92 mm | 6.8 | 11 h 10 | 64 | Strong coverage |
| November | 13.6°C | 1°C | 107 mm | 7.6 | 10 h 06 | 26 | Strong coverage |
| December | 7.7°C | -2.9°C | 112 mm | 8.9 | 9 h 35 | 5 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.2°C24 Jan 1972 | -30.0°C19 Jan 1994 | 115 mm13 Jan 2013 | 233 mm1969 · driest 20 mm in 1984 | 53 |
| February | 25.0°C29 Feb 1972 | -24.4°C4 Feb 1996 | 84 mm15 Feb 1990 | 265 mm1989 · driest 22 mm in 1983 | 55 |
| March | 29.4°C26 Mar 2007 | -20.6°C6 Mar 2015 | 149 mm19 Mar 2008 | 327 mm2008 · driest 46 mm in 1971 | 55 |
| April | 32.2°C27 Apr 1989 | -8.9°C3 Apr 1987 | 119 mm15 Apr 1972 | 463 mm2011 · driest 13 mm in 2012 | 55 |
| May | 33.3°C29 May 1969 | -4.4°C26 May 1988 | 106 mm2 May 2011 | 314 mm1990 · driest 32 mm in 1994 | 54 |
| June | 41.7°C30 Jun 2012 | 3.9°C5 Jun 1990 | 128 mm23 Jun 1969 | 323 mm1969 · driest 14 mm in 1972 | 55 |
| July | 41.1°C1 Jul 2012 | 5.6°C1 Jul 2010 | 112 mm2 Jul 1989 | 329 mm2016 · driest 30 mm in 2003 | 55 |
| August | 40.0°C5 Aug 2010 | 2.2°C29 Aug 1986 | 156 mm24 Aug 1985 | 346 mm1985 · driest 5 mm in 2007 | 55 |
| September | 37.8°C6 Sep 1999 | 0.0°C26 Sep 2001 | 115 mm2 Sep 2012 | 251 mm2006 · driest 0 mm in 2004 | 54 |
| October | 34.4°C3 Oct 2019 | -7.8°C8 Oct 1987 | 99 mm7 Oct 1998 | 196 mm1985 · driest 8 mm in 2000 | 54 |
| November | 28.9°C2 Nov 2000 | -16.1°C13 Nov 1986 | 84 mm1 Nov 2018 | 242 mm2011 · driest 16 mm in 1989 | 54 |
| December | 24.4°C2 Dec 1982 | -27.2°C22 Dec 1989 | 126 mm3 Dec 1982 | 273 mm1982 · driest 17 mm in 1980 | 54 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 3 | <1 |
| February | 0 | 0 | 21 | 3 | <1 |
| March | 2 | 0 | 15 | 4 | <1 |
| April | 7 | <1 | 5 | 4 | 0 |
| May | 16 | 3 | <1 | 4 | 0 |
| June | 26 | 13 | 0 | 4 | 0 |
| July | 29 | 20 | 0 | 3 | 0 |
| August | 29 | 18 | 0 | 3 | 0 |
| September | 22 | 10 | <1 | 3 | 0 |
| October | 10 | 1 | 5 | 3 | 0 |
| November | <1 | 0 | 15 | 4 | 0 |
| December | 0 | 0 | 22 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 25% | 10% | 26% | 2.3–8.2°C |
| February | 3% | 28% | 12% | 29% | 4.3–12.0°C |
| March | 15% | 32% | 14% | 40% | 10.9–17.4°C |
| April | 39% | 32% | 14% | 38% | 17.9–22.9°C |
| May | 60% | 32% | 14% | 39% | 22.5–27.2°C |
| June | 73% | 27% | 13% | 30% | 27.3–30.5°C |
| July | 75% | 25% | 10% | 23% | 29.1–32.8°C |
| August | 80% | 20% | 9% | 19% | 28.5–33.2°C |
| September | 76% | 20% | 10% | 17% | 25.0–29.5°C |
| October | 50% | 22% | 10% | 23% | 18.9–23.1°C |
| November | 15% | 27% | 12% | 27% | 10.4–16.6°C |
| December | 1% | 28% | 13% | 31% | 5.0–10.6°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