September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Grosse Pointe Woods: typically 23.2°C by day, 13°C at night, with 87 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 82 — days reach only 0°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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 0°C | -7.3°C | 60 mm | 8.9 | 1.1°C | 9 h 23 | 5 | Strong coverage |
| February | 1.5°C | -6.7°C | 52 mm | 7 | 0.4°C | 10 h 29 | 5 | Strong coverage |
| March | 6.5°C | -2.7°C | 59 mm | 7 | 1.3°C | 11 h 48 | 5 | Strong coverage |
| April | 13.5°C | 2.9°C | 82 mm | 9.9 | 5.0°C | 13 h 18 | 31 | Strong coverage |
| May | 20.1°C | 9.3°C | 101 mm | 10.3 | 11.3°C | 14 h 35 | 61 | Strong coverage |
| June | 25.4°C | 14.7°C | 91 mm | 9 | 17.7°C | 15 h 16 | 81 | Strong coverage |
| July | 28.2°C | 17.4°C | 85 mm | 8.7 | 22.1°C | 15 h | 70 | Strong coverage |
| August | 27°C | 16.9°C | 90 mm | 8 | 22.9°C | 13 h 54 | 75 | Strong coverage |
| September | 23.2°C | 13°C | 87 mm | 8.1 | 20.1°C | 12 h 26 | 82 | Strong coverage |
| October | 16.3°C | 6.9°C | 71 mm | 8.7 | 13.9°C | 10 h 59 | 50 | Strong coverage |
| November | 8.9°C | 1°C | 69 mm | 8.2 | 8.4°C | 9 h 42 | 16 | Strong coverage |
| December | 2.9°C | -3.8°C | 61 mm | 8.7 | 4.1°C | 9 h 05 | 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 | 17.2°C12 Jan 2017 | -27.2°C31 Jan 2019 | 57 mm12 Jan 2020 | 129 mm2024 · driest 3 mm in 1961 | 75 |
| February | 21.7°C28 Feb 2024 | -27.2°C1 Feb 2019 | 61 mm16 Feb 1954 | 131 mm1990 · driest 4 mm in 1987 | 74 |
| March | 27.2°C30 Mar 1986 | -21.1°C3 Mar 2003 | 53 mm31 Mar 2017 | 142 mm1985 · driest 11 mm in 2013 | 76 |
| April | 32.2°C26 Apr 1990 | -11.7°C2 Apr 2019 | 55 mm3 Apr 2025 | 149 mm2023 · driest 17 mm in 1962 | 74 |
| May | 33.9°C31 May 1988 | -2.8°C8 May 1976 | 84 mm26 May 2011 | 201 mm2011 · driest 20 mm in 1988 | 76 |
| June | 40.6°C26 Jun 1988 | 3.3°C1 Jun 1966 | 165 mm26 Jun 2021 | 247 mm2021 · driest 19 mm in 2016 | 75 |
| July | 38.9°C15 Jul 1995 | 6.7°C2 Jul 2007 | 130 mm29 Jul 1976 | 213 mm1969 · driest 19 mm in 1991 | 74 |
| August | 38.3°C8 Aug 2001 | 4.4°C10 Aug 2008 | 91 mm17 Aug 1968 | 265 mm1985 · driest 8 mm in 2008 | 73 |
| September | 36.7°C1 Sep 1953 | 0.0°C22 Sep 2000 | 88 mm7 Sep 1990 | 190 mm2011 · driest 13 mm in 2024 | 73 |
| October | 32.2°C6 Oct 1963 | -6.1°C22 Oct 2008 | 109 mm1 Oct 1981 | 217 mm1981 · driest 8 mm in 1963 | 74 |
| November | 26.1°C2 Nov 1950 | -15.6°C30 Nov 1976 | 58 mm7 Nov 1951 | 177 mm2011 · driest 16 mm in 1953 | 76 |
| December | 20.6°C6 Dec 1998 | -23.3°C26 Dec 1977 | 62 mm25 Dec 1965 | 136 mm1967 · driest 8 mm in 1960 | 76 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 5 |
| February | 0 | 0 | 25 | 2 | 4 |
| March | <1 | 0 | 22 | 2 | 2 |
| April | 1 | <1 | 7 | 3 | <1 |
| May | 7 | 2 | <1 | 3 | 0 |
| June | 17 | 6 | 0 | 3 | 0 |
| July | 25 | 10 | 0 | 2 | 0 |
| August | 22 | 6 | 0 | 3 | 0 |
| September | 11 | 2 | 0 | 2 | 0 |
| October | 2 | <1 | 2 | 2 | 0 |
| November | 0 | 0 | 13 | 2 | <1 |
| December | 0 | 0 | 23 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 26% | 4% | 28% | -3.3–3.1°C |
| February | 0% | 24% | 5% | 22% | -1.3–4.5°C |
| March | 3% | 25% | 7% | 29% | 3.8–10.0°C |
| April | 14% | 32% | 8% | 42% | 11.5–16.7°C |
| May | 38% | 31% | 8% | 39% | 18.0–23.4°C |
| June | 65% | 30% | 10% | 35% | 24.0–28.0°C |
| July | 74% | 26% | 9% | 26% | 26.6–30.4°C |
| August | 73% | 26% | 10% | 27% | 25.7–28.8°C |
| September | 59% | 26% | 9% | 30% | 21.9–25.2°C |
| October | 24% | 26% | 6% | 30% | 14.6–19.0°C |
| November | 3% | 28% | 7% | 31% | 6.4–11.7°C |
| December | 0% | 28% | 7% | 33% | -0.3–5.8°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