September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Aurora Springs: typically 26.5°C by day, 14.8°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
July · August · June
October · April · May
The weakest month is January, scoring 5 against September’s 78 — days reach only 4.7°C, 19° 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 | 4.7°C | -5.6°C | 53 mm | 4.7 | 9 h 46 | 5 | Strong coverage |
| February | 7.9°C | -3.4°C | 51 mm | 4.4 | 10 h 42 | 10 | Strong coverage |
| March | 13.3°C | 1.6°C | 68 mm | 7.1 | 11 h 50 | 32 | Strong coverage |
| April | 19.6°C | 7.2°C | 124 mm | 7.6 | 13 h 08 | 55 | Strong coverage |
| May | 24.2°C | 13°C | 137 mm | 9.3 | 14 h 14 | 76 | Strong coverage |
| June | 28.9°C | 18°C | 120 mm | 7.2 | 14 h 49 | 63 | Strong coverage |
| July | 31.4°C | 20.5°C | 108 mm | 6.1 | 14 h 35 | 53 | Strong coverage |
| August | 30.8°C | 19.4°C | 103 mm | 6.1 | 13 h 39 | 57 | Strong coverage |
| September | 26.5°C | 14.8°C | 110 mm | 5.9 | 12 h 23 | 78 | Strong coverage |
| October | 20.4°C | 8.4°C | 91 mm | 5.9 | 11 h 08 | 66 | Strong coverage |
| November | 12.9°C | 2.2°C | 81 mm | 5.9 | 10 h 02 | 31 | Strong coverage |
| December | 7.2°C | -2.9°C | 65 mm | 4.1 | 9 h 30 | 7 | 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 | 26.1°C24 Jan 1950 | -33.3°C11 Jan 1982 | 89 mm5 Jan 2005 | 219 mm2005 · driest 0 mm in 2025 | 116 |
| February | 27.8°C29 Feb 1972 | -33.3°C12 Feb 1899 | 63 mm23 Feb 1985 | 136 mm1951 · driest 1 mm in 1991 | 116 |
| March | 35.6°C17 Mar 1921 | -21.7°C4 Mar 1978 | 89 mm4 Mar 1963 | 251 mm1973 · driest 10 mm in 1918 | 120 |
| April | 35.0°C21 Apr 1987 | -12.2°C5 Apr 1920 | 153 mm30 Apr 2017 | 319 mm1922 · driest 13 mm in 2000 | 116 |
| May | 38.9°C30 May 1934 | -3.9°C26 May 2001 | 122 mm18 May 1995 | 324 mm1990 · driest 9 mm in 1901 | 119 |
| June | 41.1°C28 Jun 1936 | 0.0°C8 Jun 1998 | 140 mm4 Jun 1998 | 448 mm1998 · driest 0 mm in 2023 | 118 |
| July | 46.1°C14 Jul 1954 | 8.3°C9 Jul 1898 | 165 mm26 Jul 1998 | 305 mm1993 · driest 6 mm in 2005 | 119 |
| August | 44.4°C15 Aug 1936 | 3.3°C31 Aug 1915 | 124 mm28 Aug 1974 | 280 mm2005 · driest 2 mm in 2025 | 120 |
| September | 42.2°C4 Sep 1913 | -1.1°C29 Sep 1916 | 148 mm30 Sep 1925 | 366 mm1993 · driest 11 mm in 1940 | 118 |
| October | 35.6°C7 Oct 1939 | -8.3°C30 Oct 1917 | 139 mm3 Oct 1986 | 327 mm1941 · driest 0 mm in 2023 | 116 |
| November | 30.0°C1 Nov 1937 | -16.1°C17 Nov 1959 | 151 mm18 Nov 2015 | 256 mm2015 · driest 0 mm in 2023 | 117 |
| December | 25.0°C9 Dec 1991 | -31.7°C23 Dec 1989 | 160 mm14 Dec 2000 | 274 mm2000 · driest 0 mm in 2024 | 116 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 2 | <1 |
| February | <1 | 0 | 20 | 2 | <1 |
| March | 2 | 0 | 12 | 2 | <1 |
| April | 7 | 1 | 2 | 4 | 0 |
| May | 15 | 4 | <1 | 4 | 0 |
| June | 25 | 13 | 0 | 4 | 0 |
| July | 28 | 20 | 0 | 3 | 0 |
| August | 28 | 19 | 0 | 3 | 0 |
| September | 19 | 8 | 0 | 3 | 0 |
| October | 8 | 1 | 1 | 3 | 0 |
| November | 1 | 0 | 10 | 3 | <1 |
| December | 0 | 0 | 21 | 2 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 15% | 5% | 11% | 1.8–9.2°C |
| February | 6% | 18% | 6% | 14% | 4.1–11.9°C |
| March | 19% | 23% | 9% | 24% | 9.7–17.6°C |
| April | 41% | 28% | 12% | 31% | 17.2–22.9°C |
| May | 60% | 30% | 14% | 37% | 22.1–27.3°C |
| June | 72% | 27% | 12% | 30% | 27.2–31.8°C |
| July | 80% | 20% | 9% | 16% | 30.0–34.6°C |
| August | 79% | 20% | 10% | 20% | 29.0–34.4°C |
| September | 75% | 21% | 10% | 19% | 25.1–29.9°C |
| October | 54% | 20% | 9% | 20% | 18.7–24.5°C |
| November | 17% | 19% | 8% | 16% | 10.3–16.6°C |
| December | 3% | 16% | 6% | 12% | 4.3–10.1°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