September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Weatherby Lake: typically 26.3°C by day, 14.4°C at night, with 103 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 3.5°C, 20° 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 | 3.5°C | -6.7°C | 29 mm | 4.4 | 9 h 41 | 5 | Strong coverage |
| February | 6.5°C | -4.4°C | 38 mm | 4.8 | 10 h 39 | 5 | Strong coverage |
| March | 13°C | 1.1°C | 60 mm | 6.8 | 11 h 50 | 32 | Strong coverage |
| April | 18.6°C | 6.7°C | 103 mm | 8.6 | 13 h 10 | 53 | Strong coverage |
| May | 23.9°C | 12.6°C | 135 mm | 9.5 | 14 h 18 | 75 | Strong coverage |
| June | 29°C | 18°C | 133 mm | 8.6 | 14 h 55 | 59 | Strong coverage |
| July | 31.3°C | 20.3°C | 116 mm | 7.1 | 14 h 40 | 51 | Strong coverage |
| August | 30.6°C | 19.2°C | 108 mm | 6.8 | 13 h 42 | 57 | Strong coverage |
| September | 26.3°C | 14.4°C | 103 mm | 7 | 12 h 24 | 78 | Strong coverage |
| October | 19.5°C | 7.8°C | 83 mm | 6.2 | 11 h 06 | 63 | Strong coverage |
| November | 12°C | 1.1°C | 51 mm | 5.2 | 9 h 58 | 31 | Strong coverage |
| December | 5.7°C | -4.3°C | 40 mm | 4.4 | 9 h 25 | 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 | 23.3°C28 Jan 2013 | -27.2°C10 Jan 1982 | 46 mm29 Jan 1982 | 71 mm2020 · driest 1 mm in 1986 | 54 |
| February | 26.1°C22 Feb 2017 | -28.3°C6 Feb 1982 | 39 mm9 Feb 2023 | 83 mm2001 · driest 1 mm in 2006 | 54 |
| March | 33.9°C21 Mar 2026 | -23.3°C4 Mar 1978 | 65 mm14 Mar 2001 | 231 mm1973 · driest 8 mm in 1994 | 54 |
| April | 33.9°C29 Apr 1987 | -11.1°C3 Apr 1975 | 114 mm23 Apr 1975 | 214 mm1999 · driest 17 mm in 2000 | 54 |
| May | 35.0°C30 May 1998 | -1.1°C3 May 1976 | 98 mm26 May 2016 | 326 mm2019 · driest 26 mm in 2012 | 54 |
| June | 40.6°C28 Jun 2012 | 5.6°C4 Jun 1990 | 101 mm19 Jun 2001 | 301 mm2001 · driest 25 mm in 2016 | 54 |
| July | 41.7°C21 Jul 1974 | 10.6°C5 Jul 1997 | 129 mm6 Jul 1986 | 393 mm1992 · driest 3 mm in 2003 | 54 |
| August | 42.8°C29 Aug 1984 | 6.1°C28 Aug 1986 | 118 mm12 Aug 1982 | 259 mm2017 · driest 13 mm in 2000 | 53 |
| September | 41.1°C2 Sep 2000 | -0.6°C22 Sep 1995 | 224 mm12 Sep 1977 | 288 mm1977 · driest 21 mm in 2022 | 53 |
| October | 35.0°C2 Oct 2006 | -8.3°C31 Oct 1993 | 114 mm7 Oct 2018 | 273 mm2018 · driest 5 mm in 1988 | 54 |
| November | 27.8°C3 Nov 1978 | -17.2°C28 Nov 1976 | 62 mm4 Nov 2022 | 130 mm1992 · driest 0 mm in 1989 | 54 |
| December | 23.3°C5 Dec 2001 | -30.6°C23 Dec 1989 | 72 mm6 Dec 1980 | 138 mm1980 · driest 1 mm in 1996 | 54 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 4 |
| February | <1 | 0 | 22 | 1 | 3 |
| March | 2 | 0 | 14 | 2 | 2 |
| April | 6 | <1 | 3 | 4 | <1 |
| May | 14 | 4 | 0 | 4 | 0 |
| June | 26 | 14 | 0 | 4 | 0 |
| July | 30 | 21 | 0 | 4 | 0 |
| August | 29 | 18 | 0 | 3 | 0 |
| September | 19 | 7 | 0 | 3 | 0 |
| October | 6 | 1 | 2 | 3 | <1 |
| November | <1 | 0 | 13 | 2 | 1 |
| December | 0 | 0 | 25 | 1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 15% | 3% | 10% | -1.1–7.3°C |
| February | 4% | 17% | 4% | 14% | 1.2–10.5°C |
| March | 17% | 23% | 8% | 24% | 9.1–16.2°C |
| April | 35% | 28% | 10% | 33% | 15.6–20.9°C |
| May | 57% | 31% | 14% | 38% | 21.4–25.7°C |
| June | 71% | 29% | 14% | 32% | 27.1–31.0°C |
| July | 78% | 22% | 11% | 19% | 29.3–33.8°C |
| August | 78% | 22% | 10% | 23% | 28.0–33.4°C |
| September | 72% | 22% | 10% | 21% | 24.0–28.8°C |
| October | 43% | 21% | 8% | 20% | 17.6–21.6°C |
| November | 11% | 18% | 6% | 15% | 7.6–15.1°C |
| December | 1% | 15% | 4% | 10% | 2.7–8.5°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