September
September · June · August
75climate match
United States · 1991–2020
Best time to visit
Hadley.
September leads for comfortable weather in Hadley: typically 23.7°C by day, 10.2°C at night, with 118 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.7°C
Typical low10.2°C
Rain in September118 mm
July
July · August · June
65climate match
May
May · September · October
74climate match
The weakest month is January, scoring 5 against September’s 75 — days reach only 1.4°C, 23° below the 24°C the score treats as ideal, and nights drop to -10°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
51.4° / -10°
Feb
53° / -9.2°
Mar
57.6° / -4.4°
Apr
3114.8° / 1.4°
May
6221° / 7.5°
Jun
7425.7° / 12.8°
Jul
6828.6° / 15.7°
Aug
7327.7° / 14.6°
Sep
7523.7° / 10.2°
Oct
3816.8° / 3.8°
Nov
1210° / -1.6°
Dec
54.2° / -6.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1.4°C | -10°C | 84 mm | 9 | 9 h 24 | 5 | Strong coverage |
| February | 3°C | -9.2°C | 75 mm | 7.6 | 10 h 29 | 5 | Strong coverage |
| March | 7.6°C | -4.4°C | 88 mm | 7.9 | 11 h 48 | 5 | Strong coverage |
| April | 14.8°C | 1.4°C | 96 mm | 9.1 | 13 h 18 | 31 | Strong coverage |
| May | 21°C | 7.5°C | 94 mm | 10.3 | 14 h 34 | 62 | Strong coverage |
| June | 25.7°C | 12.8°C | 113 mm | 9.2 | 15 h 16 | 74 | Strong coverage |
| July | 28.6°C | 15.7°C | 105 mm | 9.5 | 14 h 59 | 68 | Strong coverage |
| August | 27.7°C | 14.6°C | 105 mm | 7.9 | 13 h 53 | 73 | Strong coverage |
| September | 23.7°C | 10.2°C | 118 mm | 7.5 | 12 h 26 | 75 | Strong coverage |
| October | 16.8°C | 3.8°C | 124 mm | 8.7 | 10 h 59 | 38 | Strong coverage |
| November | 10°C | -1.6°C | 86 mm | 7.8 | 9 h 43 | 12 | Strong coverage |
| December | 4.2°C | -6.2°C | 99 mm | 9 | 9 h 06 | 5 | Strong coverage |
What has changed
Hadley runs +0.1°C
on the 1961–1990 baseline.
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.
Jan
+0.6
Feb
+0.5
Mar
-0.1
Apr
-0.5
May
-0.4
Jun
-0.5
Jul
+0.2
Aug
0.0
Sep
+0.5
Oct
-0.2
Nov
-0.2
Dec
+1.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.1°C7 Jan 2007 | -34.4°C22 Jan 1961 | 66 mm26 Jan 1986 | 207 mm1978 · driest 13 mm in 1981 | 132 |
| February | 25.6°C22 Feb 2018 | -32.8°C2 Feb 1961 | 80 mm13 Feb 1900 | 269 mm2008 · driest 2 mm in 1987 | 133 |
| March | 29.4°C29 Mar 1945 | -27.2°C19 Mar 1967 | 82 mm7 Mar 2011 | 217 mm2024 · driest 3 mm in 1915 | 132 |
| April | 33.9°C19 Apr 1976 | -13.3°C1 Apr 1923 | 72 mm25 Apr 1945 | 228 mm1983 · driest 14 mm in 1941 | 133 |
| May | 36.7°C27 May 2010 | -4.4°C9 May 1985 | 71 mm24 May 1989 | 304 mm1984 · driest 15 mm in 1903 | 132 |
| June | 38.3°C3 Jun 1919 | -1.7°C7 Jun 1907 | 95 mm10 Jun 1961 | 261 mm1972 · driest 18 mm in 1949 | 132 |
| July | 40.0°C4 Jul 1911 | 3.9°C15 Jul 1908 | 126 mm13 Jul 1897 | 353 mm1897 · driest 0 mm in 1951 | 133 |
| August | 37.8°C7 Aug 1918 | 0.0°C30 Aug 1965 | 105 mm18 Aug 1955 | 409 mm1955 · driest 10 mm in 1894 | 132 |
| September | 37.2°C2 Sep 1953 | -3.9°C24 Sep 1963 | 154 mm16 Sep 1933 | 370 mm1938 · driest 13 mm in 1914 | 131 |
| October | 32.2°C17 Oct 1908 | -11.1°C28 Oct 1974 | 192 mm9 Oct 2005 | 436 mm2005 · driest 0 mm in 1924 | 131 |
| November | 27.8°C2 Nov 1950 | -20.0°C26 Nov 1938 | 87 mm3 Nov 1927 | 220 mm1927 · driest 8 mm in 2012 | 131 |
| December | 22.2°C8 Dec 1998 | -30.0°C30 Dec 1917 | 104 mm15 Dec 1897 | 223 mm1973 · driest 15 mm in 1943 | 132 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 3 | 6 |
| February | 0 | 0 | 27 | 3 | 5 |
| March | <1 | 0 | 25 | 3 | 3 |
| April | 2 | <1 | 13 | 3 | <1 |
| May | 8 | 2 | 2 | 3 | 0 |
| June | 18 | 6 | 0 | 4 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 25 | 9 | 0 | 3 | 0 |
| September | 13 | 3 | <1 | 3 | 0 |
| October | 2 | 0 | 9 | 4 | <1 |
| November | <1 | 0 | 20 | 3 | <1 |
| December | 0 | 0 | 27 | 4 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 28% | 10% | 31% | -1.8–3.8°C |
| February | <1% | 27% | 10% | 30% | -0.8–5.2°C |
| March | 3% | 28% | 10% | 31% | 4.3–10.8°C |
| April | 16% | 30% | 11% | 37% | 12.0–17.2°C |
| May | 47% | 31% | 11% | 39% | 18.6–23.6°C |
| June | 66% | 30% | 11% | 35% | 24.0–27.3°C |
| July | 71% | 29% | 11% | 31% | 26.7–30.0°C |
| August | 72% | 27% | 10% | 27% | 25.5–29.0°C |
| September | 61% | 25% | 10% | 26% | 21.6–25.0°C |
| October | 26% | 23% | 9% | 24% | 15.4–19.2°C |
| November | 3% | 27% | 11% | 29% | 7.5–12.3°C |
| December | <1% | 28% | 11% | 32% | -0.1–5.7°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
Nearby, measured,
and named.
- Place identity
- GeoNames 4938574
- NOAA station
- USC00190120 · AMHERST
- Station distance
- 6.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 42.34°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.