September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Hamtramck: typically 23.7°C by day, 13.7°C at night, with 81 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 86 — days reach only 0.5°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 | 0.5°C | -6.4°C | 36 mm | 6.4 | 1.1°C | 9 h 23 | 5 | Good coverage |
| February | 2°C | -5.6°C | 38 mm | 5.7 | 0.4°C | 10 h 29 | 5 | Good coverage |
| March | 7.5°C | -1.5°C | 54 mm | 7.5 | 1.3°C | 11 h 48 | 9 | Good coverage |
| April | 14.4°C | 4°C | 68 mm | 8.9 | 5.0°C | 13 h 18 | 39 | Good coverage |
| May | 21.1°C | 10.2°C | 97 mm | 10.9 | 11.3°C | 14 h 34 | 66 | Good coverage |
| June | 26.5°C | 15.9°C | 68 mm | 7.7 | 17.7°C | 15 h 16 | 81 | Good coverage |
| July | 28.9°C | 18.7°C | 81 mm | 8.4 | 22.1°C | 14 h 59 | 66 | Good coverage |
| August | 27.6°C | 18°C | 80 mm | 7.3 | 22.9°C | 13 h 54 | 73 | Good coverage |
| September | 23.7°C | 13.7°C | 81 mm | 7.3 | 20.1°C | 12 h 26 | 86 | Good coverage |
| October | 16.5°C | 7.3°C | 59 mm | 8.4 | 13.9°C | 10 h 59 | 53 | Good coverage |
| November | 9.3°C | 1.8°C | 60 mm | 7.6 | 8.4°C | 9 h 43 | 20 | Good coverage |
| December | 3.1°C | -3.1°C | 47 mm | 6.7 | 4.1°C | 9 h 05 | 5 | Good 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 | 19.4°C25 Jan 1950 | -27.2°C19 Jan 1994 | 51 mm11 Jan 2020 | 111 mm1950 · driest 3 mm in 2022 | 77 |
| February | 23.3°C27 Feb 2024 | -23.2°C20 Feb 2015 | 49 mm14 Feb 1950 | 123 mm1950 · driest 3 mm in 1969 | 78 |
| March | 28.3°C21 Mar 2012 | -19.4°C3 Mar 2003 | 44 mm30 Mar 2017 | 116 mm2016 · driest 12 mm in 2013 | 78 |
| April | 31.7°C25 Apr 1990 | -10.0°C3 Apr 1954 | 55 mm2 Apr 2025 | 134 mm2013 · driest 0 mm in 1975 | 78 |
| May | 33.9°C31 May 1988 | -1.1°C1 May 1978 | 77 mm25 May 2011 | 178 mm2004 · driest 0 mm in 1975 | 78 |
| June | 39.4°C25 Jun 1988 | 3.3°C9 Jun 1969 | 90 mm25 Jun 1968 | 171 mm2021 · driest 0 mm in 1975 | 77 |
| July | 39.4°C14 Jul 1995 | 5.6°C5 Jul 1972 | 74 mm8 Jul 2016 | 179 mm1969 · driest 0 mm in 1975 | 77 |
| August | 38.9°C7 Aug 2001 | 7.2°C29 Aug 1965 | 93 mm4 Aug 1956 | 202 mm2016 · driest 0 mm in 1966 | 76 |
| September | 37.8°C3 Sep 1953 | 0.6°C24 Sep 2000 | 103 mm29 Sep 2016 | 192 mm2016 · driest 0 mm in 1966 | 76 |
| October | 33.3°C7 Oct 1963 | -4.4°C31 Oct 1988 | 84 mm3 Oct 1954 | 198 mm1954 · driest 0 mm in 1975 | 76 |
| November | 27.2°C1 Nov 1950 | -15.0°C30 Nov 1958 | 50 mm29 Nov 2011 | 139 mm2011 · driest 0 mm in 1975 | 76 |
| December | 21.1°C6 Dec 1998 | -20.6°C23 Dec 1960 | 54 mm21 Dec 1967 | 117 mm1957 · driest 0 mm in 1975 | 76 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 |
| February | 0 | 0 | 25 | 1 |
| March | <1 | 0 | 20 | 2 |
| April | 2 | 0 | 6 | 3 |
| May | 8 | 2 | <1 | 3 |
| June | 20 | 8 | 0 | 2 |
| July | 28 | 12 | 0 | 3 |
| August | 25 | 9 | 0 | 2 |
| September | 13 | 3 | 0 | 3 |
| October | 2 | <1 | <1 | 2 |
| November | 0 | 0 | 11 | 2 |
| December | 0 | 0 | 23 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 23% | 4% | 21% | -3.4–3.3°C |
| February | <1% | 23% | 4% | 24% | -1.1–4.6°C |
| March | 3% | 27% | 6% | 33% | 4.0–10.3°C |
| April | 14% | 30% | 8% | 37% | 11.9–16.8°C |
| May | 41% | 29% | 8% | 38% | 18.6–24.0°C |
| June | 70% | 27% | 8% | 29% | 24.6–28.3°C |
| July | 75% | 25% | 8% | 26% | 27.0–30.2°C |
| August | 77% | 23% | 8% | 22% | 25.7–29.3°C |
| September | 62% | 22% | 7% | 23% | 21.7–25.4°C |
| October | 27% | 22% | 5% | 22% | 14.4–19.5°C |
| November | 3% | 25% | 6% | 27% | 6.4–11.7°C |
| December | 0% | 26% | 6% | 26% | -0.6–5.6°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