September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Troy: typically 26.5°C by day, 12.4°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · September
The weakest month is January, scoring 5 against September’s 76 — days reach only 5.8°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.7°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 | 5.8°C | -5.7°C | 91 mm | 11.1 | 9 h 42 | 5 | Strong coverage |
| February | 7.9°C | -4.6°C | 82 mm | 10.6 | 10 h 40 | 5 | Strong coverage |
| March | 12.9°C | -1.3°C | 113 mm | 11.4 | 11 h 50 | 15 | Strong coverage |
| April | 19.8°C | 3.8°C | 96 mm | 11.5 | 13 h 10 | 50 | Strong coverage |
| May | 24.1°C | 9.5°C | 126 mm | 11.8 | 14 h 17 | 69 | Strong coverage |
| June | 28°C | 14.7°C | 118 mm | 11.1 | 14 h 53 | 67 | Strong coverage |
| July | 29.8°C | 17.2°C | 129 mm | 10.4 | 14 h 39 | 57 | Strong coverage |
| August | 29.4°C | 16.5°C | 101 mm | 8.7 | 13 h 41 | 65 | Strong coverage |
| September | 26.5°C | 12.4°C | 88 mm | 7.4 | 12 h 24 | 76 | Strong coverage |
| October | 20.5°C | 5.6°C | 82 mm | 8 | 11 h 06 | 60 | Strong coverage |
| November | 13.7°C | -0.3°C | 79 mm | 9 | 9 h 59 | 27 | Strong coverage |
| December | 7.9°C | -3.1°C | 95 mm | 11.5 | 9 h 26 | 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 | 26.7°C29 Jan 1914 | -31.7°C19 Jan 1994 | 50 mm22 Jan 1999 | 270 mm1937 · driest 22 mm in 1967 | 134 |
| February | 27.8°C21 Feb 2018 | -33.9°C10 Feb 1899 | 70 mm9 Feb 1994 | 191 mm2018 · driest 10 mm in 1968 | 132 |
| March | 32.8°C25 Mar 1929 | -24.4°C4 Mar 1996 | 74 mm1 Mar 1997 | 208 mm1917 · driest 17 mm in 2025 | 133 |
| April | 35.0°C24 Apr 1925 | -13.3°C1 Apr 1923 | 56 mm28 Apr 1902 | 222 mm1901 · driest 24 mm in 1997 | 131 |
| May | 37.2°C20 May 1911 | -5.6°C10 May 1966 | 85 mm25 May 1920 | 267 mm1938 · driest 13 mm in 1911 | 131 |
| June | 38.3°C20 Jun 1931 | -0.6°C11 Jun 1972 | 98 mm22 Jun 1937 | 275 mm1998 · driest 12 mm in 1966 | 132 |
| July | 41.7°C5 Jul 1911 | 3.3°C9 Jul 1963 | 129 mm24 Jul 1951 | 359 mm1896 · driest 25 mm in 1930 | 131 |
| August | 41.7°C6 Aug 1918 | 2.8°C12 Aug 1930 | 94 mm5 Aug 1943 | 220 mm1954 · driest 4 mm in 1995 | 131 |
| September | 40.0°C1 Sep 1932 | -1.7°C24 Sep 1963 | 74 mm13 Sep 1971 | 300 mm2018 · driest 3 mm in 2019 | 132 |
| October | 35.0°C2 Oct 2019 | -11.1°C22 Oct 1930 | 79 mm16 Oct 1954 | 226 mm1925 · driest 3 mm in 1963 | 133 |
| November | 30.0°C3 Nov 1946 | -17.8°C30 Nov 1929 | 89 mm16 Nov 1926 | 237 mm1985 · driest 12 mm in 1904 | 132 |
| December | 27.8°C24 Dec 1932 | -31.7°C30 Dec 1917 | 56 mm9 Dec 1972 | 185 mm1902 · driest 17 mm in 1965 | 133 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 24 | 3 | 6 |
| February | <1 | 0 | 23 | 3 | 4 |
| March | 2 | <1 | 19 | 4 | 2 |
| April | 7 | 1 | 8 | 3 | <1 |
| May | 15 | 4 | <1 | 4 | 0 |
| June | 24 | 10 | 0 | 4 | 0 |
| July | 28 | 16 | 0 | 5 | 0 |
| August | 28 | 15 | 0 | 3 | 0 |
| September | 19 | 7 | 0 | 3 | 0 |
| October | 8 | <1 | 5 | 3 | 0 |
| November | 1 | 0 | 17 | 3 | <1 |
| December | 0 | 0 | 22 | 3 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 39% | 11% | 55% | 2.2–10.6°C |
| February | 3% | 39% | 10% | 53% | 3.6–11.8°C |
| March | 15% | 38% | 12% | 54% | 9.5–17.1°C |
| April | 35% | 38% | 11% | 53% | 17.1–22.9°C |
| May | 55% | 38% | 13% | 48% | 22.0–27.8°C |
| June | 64% | 35% | 14% | 45% | 26.6–31.1°C |
| July | 66% | 34% | 15% | 44% | 28.0–32.8°C |
| August | 71% | 30% | 12% | 33% | 27.9–32.3°C |
| September | 70% | 26% | 10% | 27% | 24.5–30.3°C |
| October | 48% | 26% | 9% | 30% | 17.9–24.1°C |
| November | 16% | 32% | 10% | 42% | 10.7–16.7°C |
| December | 2% | 37% | 10% | 51% | 4.3–11.7°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