September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Bay View: typically 23.2°C by day, 14.6°C at night, with 73 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · October · September
The weakest month is January, scoring 5 against September’s 88 — days reach only 1°C, 23° 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 1°C | -6°C | 48 mm | 6.5 | 1.1°C | 9 h 29 | 5 | Strong coverage |
| February | 2.3°C | -5.2°C | 45 mm | 6 | 0.7°C | 10 h 32 | 5 | Strong coverage |
| March | 6.9°C | -0.9°C | 62 mm | 8.5 | 1.8°C | 11 h 48 | 6 | Strong coverage |
| April | 13.7°C | 4.9°C | 97 mm | 10.2 | 6.1°C | 13 h 16 | 33 | Strong coverage |
| May | 19.9°C | 11.4°C | 86 mm | 10 | 12.7°C | 14 h 29 | 67 | Strong coverage |
| June | 25.3°C | 17.1°C | 103 mm | 9.4 | 19.6°C | 15 h 09 | 77 | Strong coverage |
| July | 27.6°C | 19.2°C | 93 mm | 7.8 | 23.8°C | 14 h 54 | 68 | Strong coverage |
| August | 26.7°C | 18.6°C | 78 mm | 6.7 | 24.1°C | 13 h 50 | 75 | Strong coverage |
| September | 23.2°C | 14.6°C | 73 mm | 6.6 | 21.4°C | 12 h 25 | 88 | Strong coverage |
| October | 16.9°C | 8.4°C | 67 mm | 7.9 | 15.0°C | 11 h 01 | 56 | Strong coverage |
| November | 9.8°C | 2.4°C | 65 mm | 7.6 | 8.2°C | 9 h 47 | 22 | Strong coverage |
| December | 3.7°C | -2.7°C | 52 mm | 7.4 | 3.5°C | 9 h 11 | 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 | 22.8°C25 Jan 1950 | -28.9°C19 Jan 1994 | 52 mm21 Jan 1959 | 167 mm1937 · driest 4 mm in 2026 | 91 |
| February | 23.9°C24 Feb 2017 | -22.2°C20 Feb 2015 | 53 mm27 Feb 1997 | 115 mm1950 · driest 1 mm in 1987 | 90 |
| March | 28.9°C22 Mar 1938 | -21.7°C2 Mar 1978 | 66 mm1 Mar 2018 | 138 mm1985 · driest 16 mm in 2006 | 90 |
| April | 32.2°C30 Apr 1942 | -8.9°C8 Apr 1982 | 67 mm14 Apr 1979 | 255 mm2011 · driest 19 mm in 1946 | 90 |
| May | 33.9°C22 May 1977 | -1.1°C10 May 1966 | 97 mm19 May 1938 | 230 mm1943 · driest 17 mm in 1998 | 90 |
| June | 39.4°C26 Jun 1988 | 5.6°C4 Jun 1947 | 143 mm25 Jun 1937 | 318 mm1937 · driest 17 mm in 1988 | 91 |
| July | 40.6°C14 Jul 1936 | 5.0°C21 Jul 1970 | 153 mm12 Jul 1966 | 320 mm1966 · driest 13 mm in 2020 | 86 |
| August | 38.9°C22 Aug 1936 | 7.2°C30 Aug 1946 | 99 mm30 Aug 2005 | 252 mm1975 · driest 5 mm in 2010 | 86 |
| September | 37.2°C1 Sep 1953 | 1.1°C21 Sep 1956 | 88 mm1 Sep 1961 | 216 mm2011 · driest 0 mm in 2004 | 88 |
| October | 33.9°C3 Oct 1953 | -4.4°C31 Oct 1988 | 113 mm30 Oct 2012 | 273 mm2012 · driest 0 mm in 2021 | 89 |
| November | 27.8°C1 Nov 1950 | -16.1°C30 Nov 1958 | 68 mm5 Nov 2017 | 166 mm1982 · driest 6 mm in 1976 | 89 |
| December | 22.8°C4 Dec 1982 | -26.7°C23 Dec 1989 | 64 mm21 Dec 2013 | 163 mm1990 · driest 12 mm in 2010 | 89 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 1 | 3 |
| February | 0 | 0 | 24 | 1 | 2 |
| March | <1 | 0 | 18 | 2 | 1 |
| April | 2 | 0 | 3 | 3 | <1 |
| May | 7 | 2 | 0 | 3 | 0 |
| June | 16 | 5 | 0 | 3 | 0 |
| July | 24 | 8 | 0 | 3 | 0 |
| August | 21 | 6 | 0 | 2 | 0 |
| September | 11 | 2 | 0 | 2 | 0 |
| October | 3 | <1 | <1 | 2 | 0 |
| November | <1 | 0 | 10 | 2 | <1 |
| December | 0 | 0 | 22 | 2 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 24% | 5% | 26% | -2.5–4.3°C |
| February | <1% | 24% | 5% | 26% | -0.8–5.4°C |
| March | 4% | 29% | 7% | 37% | 4.1–11.2°C |
| April | 14% | 34% | 10% | 45% | 11.4–16.6°C |
| May | 34% | 32% | 9% | 42% | 17.9–22.8°C |
| June | 62% | 30% | 11% | 34% | 23.8–27.4°C |
| July | 75% | 25% | 9% | 24% | 26.5–29.5°C |
| August | 77% | 23% | 9% | 23% | 25.7–28.9°C |
| September | 60% | 23% | 8% | 23% | 21.9–25.3°C |
| October | 26% | 24% | 6% | 25% | 14.7–19.9°C |
| November | 4% | 27% | 7% | 32% | 7.0–12.5°C |
| December | <1% | 27% | 5% | 31% | 0.0–6.5°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