September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Gibbon: typically 25.6°C by day, 10.6°C at night, with 47 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
August · July · June
October · September · May
The weakest month is January, scoring 5 against September’s 83 — days reach only 2.3°C, 22° below the 24°C the score treats as ideal, and nights drop to -10.2°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 | 2.3°C | -10.2°C | 13 mm | 2.4 | 9 h 33 | 5 | Strong coverage |
| February | 4.4°C | -8.6°C | 14 mm | 3.1 | 10 h 35 | 5 | Strong coverage |
| March | 10.9°C | -3.8°C | 37 mm | 4.7 | 11 h 49 | 21 | Strong coverage |
| April | 16.5°C | 2°C | 68 mm | 6.9 | 13 h 14 | 44 | Strong coverage |
| May | 22°C | 8.5°C | 112 mm | 9.3 | 14 h 26 | 65 | Strong coverage |
| June | 28°C | 14.7°C | 99 mm | 7.9 | 15 h 05 | 73 | Strong coverage |
| July | 30.4°C | 17.3°C | 85 mm | 7 | 14 h 49 | 64 | Strong coverage |
| August | 29.2°C | 16°C | 77 mm | 6.6 | 13 h 47 | 72 | Strong coverage |
| September | 25.6°C | 10.6°C | 47 mm | 5.2 | 12 h 25 | 83 | Strong coverage |
| October | 18.4°C | 3.2°C | 54 mm | 4.9 | 11 h 03 | 56 | Strong coverage |
| November | 10.3°C | -3.7°C | 25 mm | 3.1 | 9 h 51 | 21 | Strong coverage |
| December | 3.6°C | -8.6°C | 16 mm | 2.5 | 9 h 16 | 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 | 25.0°C11 Jan 1990 | -33.3°C12 Jan 1912 | 36 mm18 Jan 1996 | 49 mm1960 · driest 0 mm in 1986 | 123 |
| February | 26.1°C19 Feb 1930 | -33.3°C15 Feb 2021 | 37 mm19 Feb 1971 | 57 mm1903 · driest 0 mm in 1910 | 123 |
| March | 35.0°C22 Mar 2026 | -29.4°C3 Mar 1960 | 105 mm14 Mar 2021 | 192 mm2021 · driest 1 mm in 1994 | 125 |
| April | 37.8°C28 Apr 1910 | -17.8°C2 Apr 1936 | 102 mm17 Apr 2016 | 213 mm2016 · driest 1 mm in 1989 | 123 |
| May | 39.4°C29 May 1934 | -7.2°C1 May 1909 | 124 mm14 May 1905 | 254 mm1935 · driest 2 mm in 1964 | 125 |
| June | 42.2°C22 Jun 1988 | 1.7°C6 Jun 1935 | 151 mm25 Jun 1989 | 385 mm1967 · driest 9 mm in 1981 | 126 |
| July | 45.6°C24 Jul 1936 | 5.6°C14 Jul 1990 | 128 mm9 Jul 2019 | 252 mm1993 · driest 3 mm in 1997 | 126 |
| August | 43.9°C8 Aug 1934 | 2.8°C23 Aug 1928 | 103 mm1 Aug 1972 | 208 mm2006 · driest 3 mm in 2022 | 125 |
| September | 42.2°C2 Sep 1929 | -7.2°C29 Sep 1984 | 102 mm22 Sep 2023 | 206 mm1973 · driest 2 mm in 1984 | 125 |
| October | 35.0°C4 Oct 1938 | -14.4°C29 Oct 1913 | 79 mm7 Oct 2008 | 238 mm2008 · driest 0 mm in 1933 | 124 |
| November | 28.3°C5 Nov 1945 | -25.0°C28 Nov 1976 | 81 mm19 Nov 1930 | 102 mm1931 · driest 0 mm in 1939 | 124 |
| December | 25.0°C24 Dec 1964 | -34.4°C23 Dec 1989 | 64 mm2 Dec 1933 | 117 mm1913 · driest 0 mm in 1982 | 123 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 3 |
| February | <1 | 0 | 27 | <1 | 3 |
| March | 1 | <1 | 24 | 1 | 2 |
| April | 4 | <1 | 11 | 2 | <1 |
| May | 11 | 4 | 1 | 4 | 0 |
| June | 23 | 12 | 0 | 3 | 0 |
| July | 28 | 18 | 0 | 3 | 0 |
| August | 27 | 14 | 0 | 2 | 0 |
| September | 18 | 7 | <1 | 2 | 0 |
| October | 6 | 1 | 8 | 2 | <1 |
| November | <1 | 0 | 24 | 1 | 1 |
| December | 0 | 0 | 30 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 8% | <1% | 3% | -2.2–7.1°C |
| February | 3% | 11% | 1% | 7% | -0.7–9.5°C |
| March | 14% | 15% | 3% | 11% | 5.6–15.3°C |
| April | 33% | 22% | 7% | 22% | 13.9–20.1°C |
| May | 53% | 28% | 11% | 33% | 20.0–25.3°C |
| June | 70% | 28% | 11% | 30% | 25.6–31.4°C |
| July | 77% | 23% | 9% | 23% | 28.8–34.4°C |
| August | 79% | 21% | 7% | 17% | 28.0–33.3°C |
| September | 73% | 18% | 6% | 15% | 23.1–28.5°C |
| October | 47% | 14% | 5% | 10% | 16.2–22.1°C |
| November | 11% | 9% | 2% | 6% | 7.2–13.8°C |
| December | <1% | 9% | 1% | 4% | -0.1–7.4°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