September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Bruno: typically 25.3°C by day, 11.6°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
October · September · May
The weakest month is January, scoring 5 against September’s 81 — days reach only -0.3°C, 24° 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 | -0.3°C | -10.9°C | 19 mm | 4 | 9 h 30 | 5 | Strong coverage |
| February | 2.4°C | -8.8°C | 23 mm | 4.4 | 10 h 33 | 5 | Strong coverage |
| March | 9.8°C | -3.1°C | 43 mm | 6.2 | 11 h 48 | 16 | Strong coverage |
| April | 16.5°C | 2.9°C | 79 mm | 8.2 | 13 h 15 | 43 | Strong coverage |
| May | 22.4°C | 9.3°C | 115 mm | 9.9 | 14 h 28 | 67 | Strong coverage |
| June | 27.7°C | 15.3°C | 127 mm | 9.3 | 15 h 08 | 69 | Strong coverage |
| July | 30°C | 17.9°C | 77 mm | 7.6 | 14 h 52 | 65 | Strong coverage |
| August | 28.8°C | 16.7°C | 107 mm | 8.2 | 13 h 49 | 66 | Strong coverage |
| September | 25.3°C | 11.6°C | 72 mm | 6.3 | 12 h 25 | 81 | Strong coverage |
| October | 18°C | 4.8°C | 55 mm | 5.7 | 11 h 01 | 57 | Strong coverage |
| November | 8.9°C | -2.9°C | 34 mm | 3.9 | 9 h 48 | 17 | Strong coverage |
| December | 1.7°C | -8.6°C | 28 mm | 4.2 | 9 h 13 | 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 | 21.7°C10 Jan 1928 | -34.4°C12 Jan 1912 | 51 mm2 Jan 1932 | 123 mm1932 · driest 0 mm in 1935 | 123 |
| February | 26.1°C29 Feb 1972 | -34.4°C11 Feb 1899 | 54 mm9 Feb 1966 | 87 mm1915 · driest 1 mm in 1977 | 122 |
| March | 31.7°C30 Mar 1986 | -27.2°C11 Mar 1948 | 80 mm23 Mar 1987 | 225 mm1987 · driest 0 mm in 1994 | 122 |
| April | 35.6°C28 Apr 1910 | -15.0°C3 Apr 1975 | 77 mm8 Apr 1978 | 242 mm1978 · driest 5 mm in 1990 | 122 |
| May | 40.6°C29 May 1934 | -5.6°C1 May 1909 | 149 mm31 May 1951 | 333 mm1903 · driest 5 mm in 1934 | 121 |
| June | 41.1°C10 Jun 1933 | 0.6°C9 Jun 1993 | 179 mm24 Jun 1963 | 420 mm1967 · driest 16 mm in 1974 | 122 |
| July | 45.6°C25 Jul 1936 | 6.1°C30 Jul 1971 | 81 mm29 Jul 1948 | 247 mm1915 · driest 0 mm in 1936 | 120 |
| August | 43.9°C8 Aug 1934 | 1.7°C24 Aug 1928 | 153 mm16 Aug 2017 | 280 mm1977 · driest 10 mm in 2022 | 120 |
| September | 40.0°C6 Sep 1939 | -7.8°C20 Sep 1991 | 84 mm27 Sep 1945 | 278 mm1965 · driest 6 mm in 2012 | 119 |
| October | 35.6°C4 Oct 1938 | -15.0°C28 Oct 1925 | 81 mm31 Oct 1979 | 171 mm2008 · driest 0 mm in 1958 | 120 |
| November | 29.4°C6 Nov 1934 | -25.0°C30 Nov 1964 | 54 mm14 Nov 1926 | 124 mm1931 · driest 0 mm in 1901 | 120 |
| December | 24.4°C6 Dec 1939 | -32.8°C23 Dec 1989 | 45 mm19 Dec 1968 | 89 mm1913 · driest 0 mm in 1937 | 122 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 4 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | 1 | 0 | 22 | 1 | 3 |
| April | 4 | <1 | 9 | 3 | <1 |
| May | 12 | 3 | 1 | 4 | <1 |
| June | 23 | 10 | 0 | 4 | 0 |
| July | 28 | 16 | 0 | 3 | 0 |
| August | 26 | 13 | 0 | 3 | 0 |
| September | 17 | 7 | <1 | 2 | 0 |
| October | 5 | <1 | 6 | 2 | <1 |
| November | <1 | 0 | 21 | 1 | 2 |
| December | 0 | 0 | 30 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 11% | 2% | 5% | -4.3–4.8°C |
| February | 1% | 13% | 3% | 9% | -2.3–7.6°C |
| March | 10% | 17% | 5% | 14% | 4.7–13.5°C |
| April | 30% | 24% | 8% | 26% | 13.7–19.6°C |
| May | 53% | 29% | 12% | 35% | 20.0–25.8°C |
| June | 68% | 29% | 12% | 33% | 25.2–30.7°C |
| July | 77% | 22% | 8% | 21% | 28.0–34.0°C |
| August | 76% | 23% | 9% | 23% | 27.4–32.1°C |
| September | 68% | 21% | 8% | 20% | 22.9–28.0°C |
| October | 42% | 16% | 5% | 13% | 15.6–21.6°C |
| November | 7% | 12% | 4% | 8% | 6.3–12.7°C |
| December | <1% | 11% | 2% | 7% | -1.6–5.7°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