September
September · June · May
76climate match
United States · 1991–2020
Best time to visit
Clinton.
September leads for comfortable weather in Clinton: typically 25.2°C by day, 12.2°C at night, with 113 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.2°C
Typical low12.2°C
Rain in September113 mm
August
August · July · June
67climate match
May
May · October · September
69climate match
The weakest month is January, scoring 5 against September’s 76 — days reach only 3.2°C, 21° below the 24°C the score treats as ideal.
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
53.2° / -6.3°
Feb
54.9° / -5.7°
Mar
79.8° / -1.7°
Apr
4116.9° / 3.7°
May
6722.5° / 9.3°
Jun
7127.1° / 14.3°
Jul
5730° / 17.4°
Aug
6529° / 16.3°
Sep
7625.2° / 12.2°
Oct
5018.3° / 5.7°
Nov
2311.9° / 0.7°
Dec
56° / -3.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 3.2°C | -6.3°C | 99 mm | 8.7 | 9 h 34 | 5 | Strong coverage |
| February | 4.9°C | -5.7°C | 78 mm | 7.6 | 10 h 35 | 5 | Strong coverage |
| March | 9.8°C | -1.7°C | 113 mm | 9.1 | 11 h 49 | 7 | Strong coverage |
| April | 16.9°C | 3.7°C | 105 mm | 9.3 | 13 h 14 | 41 | Strong coverage |
| May | 22.5°C | 9.3°C | 109 mm | 10.6 | 14 h 25 | 67 | Strong coverage |
| June | 27.1°C | 14.3°C | 121 mm | 9.5 | 15 h 04 | 71 | Strong coverage |
| July | 30°C | 17.4°C | 130 mm | 9.4 | 14 h 49 | 57 | Strong coverage |
| August | 29°C | 16.3°C | 113 mm | 8.6 | 13 h 47 | 65 | Strong coverage |
| September | 25.2°C | 12.2°C | 113 mm | 7.2 | 12 h 25 | 76 | Strong coverage |
| October | 18.3°C | 5.7°C | 112 mm | 7.7 | 11 h 03 | 50 | Strong coverage |
| November | 11.9°C | 0.7°C | 87 mm | 7.1 | 9 h 52 | 23 | Strong coverage |
| December | 6°C | -3.2°C | 119 mm | 9.3 | 9 h 17 | 5 | Strong coverage |
What has changed
Clinton runs +0.6°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
+0.8
Feb
+1.2
Mar
+0.4
Apr
+0.7
May
+0.4
Jun
0.0
Jul
+0.7
Aug
+0.2
Sep
+0.8
Oct
+0.4
Nov
-0.1
Dec
+1.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.3°C14 Jan 1932 | -27.8°C14 Jan 1912 | 78 mm10 Jan 2024 | 288 mm1979 · driest 20 mm in 1981 | 125 |
| February | 25.6°C22 Feb 2018 | -26.7°C9 Feb 1934 | 68 mm1 Feb 1915 | 165 mm2008 · driest 18 mm in 1968 | 125 |
| March | 31.1°C31 Mar 1998 | -21.1°C10 Mar 1984 | 98 mm14 Mar 2010 | 259 mm2010 · driest 25 mm in 2006 | 126 |
| April | 35.0°C25 Apr 1915 | -12.2°C1 Apr 1923 | 145 mm16 Apr 2007 | 290 mm2007 · driest 19 mm in 1963 | 127 |
| May | 37.2°C31 May 1939 | -3.9°C11 May 1966 | 95 mm3 May 1985 | 240 mm1989 · driest 11 mm in 1903 | 128 |
| June | 38.9°C29 Jun 1934 | 1.1°C15 Jun 1978 | 101 mm2 Jun 1946 | 304 mm2006 · driest 5 mm in 1949 | 128 |
| July | 41.1°C10 Jul 1936 | 5.0°C3 Jul 1957 | 114 mm19 Jul 1921 | 322 mm1919 · driest 5 mm in 1955 | 127 |
| August | 42.2°C7 Aug 1918 | 2.8°C31 Aug 1965 | 191 mm28 Aug 2011 | 427 mm2011 · driest 4 mm in 1964 | 126 |
| September | 40.6°C2 Sep 1953 | -2.8°C28 Sep 1957 | 216 mm17 Sep 1999 | 330 mm2011 · driest 7 mm in 1941 | 126 |
| October | 36.1°C5 Oct 1941 | -7.8°C26 Oct 1952 | 109 mm1 Oct 2010 | 350 mm2005 · driest 1 mm in 2024 | 128 |
| November | 28.9°C1 Nov 1950 | -16.7°C26 Nov 1938 | 85 mm7 Nov 1932 | 252 mm1932 · driest 8 mm in 2021 | 127 |
| December | 23.9°C30 Dec 1984 | -25.6°C27 Dec 1948 | 85 mm18 Dec 2023 | 252 mm2023 · driest 7 mm in 1989 | 126 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 4 | 4 |
| February | 0 | 0 | 24 | 3 | 4 |
| March | <1 | 0 | 21 | 4 | 3 |
| April | 3 | <1 | 7 | 3 | <1 |
| May | 11 | 3 | <1 | 4 | 0 |
| June | 21 | 9 | 0 | 4 | 0 |
| July | 28 | 16 | 0 | 4 | 0 |
| August | 27 | 14 | 0 | 4 | 0 |
| September | 16 | 5 | 0 | 3 | 0 |
| October | 3 | <1 | 4 | 3 | <1 |
| November | <1 | 0 | 15 | 3 | <1 |
| December | 0 | 0 | 24 | 4 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 29% | 10% | 33% | 0.1–6.5°C |
| February | <1% | 29% | 10% | 34% | 1.8–8.3°C |
| March | 7% | 31% | 12% | 38% | 7.3–13.5°C |
| April | 25% | 31% | 11% | 39% | 14.6–19.1°C |
| May | 55% | 31% | 12% | 38% | 20.6–25.5°C |
| June | 68% | 30% | 11% | 36% | 25.4–29.5°C |
| July | 70% | 30% | 13% | 36% | 28.6–31.9°C |
| August | 72% | 28% | 11% | 31% | 27.2–31.1°C |
| September | 70% | 24% | 10% | 24% | 23.6–27.4°C |
| October | 38% | 23% | 9% | 23% | 17.4–21.6°C |
| November | 7% | 25% | 10% | 26% | 9.9–14.7°C |
| December | <1% | 29% | 11% | 34% | 2.6–8.3°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 5096709
- NOAA station
- USC00283029 · FLEMINGTON 5 NNW
- Station distance
- 7.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 40.64°, 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.