September
September · August · May
85climate match
United States · 1991–2020
Best time to visit
Middletown.
September leads for comfortable weather in Middletown: typically 24.7°C by day, 12.9°C at night, with 79 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.7°C
Typical low12.9°C
Rain in September79 mm
July
July · August · June
72climate match
October
October · September · May
74climate match
The weakest month is January, scoring 5 against September’s 85 — days reach only 1.5°C, 22° 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
51.5° / -6.8°
Feb
54.2° / -4.8°
Mar
1410° / -0.1°
Apr
4417.1° / 5.3°
May
7122.7° / 11.2°
Jun
6727.2° / 16.2°
Jul
6428.8° / 17.9°
Aug
7228° / 17°
Sep
8524.7° / 12.9°
Oct
5418.1° / 6.9°
Nov
1810.5° / 1.3°
Dec
54° / -3.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1.5°C | -6.8°C | 75 mm | 8.1 | 9 h 37 | 5 | Strong coverage |
| February | 4.2°C | -4.8°C | 64 mm | 6.5 | 10 h 37 | 5 | Strong coverage |
| March | 10°C | -0.1°C | 88 mm | 8.3 | 11 h 49 | 14 | Strong coverage |
| April | 17.1°C | 5.3°C | 104 mm | 10 | 13 h 12 | 44 | Strong coverage |
| May | 22.7°C | 11.2°C | 115 mm | 10.4 | 14 h 22 | 71 | Strong coverage |
| June | 27.2°C | 16.2°C | 133 mm | 10 | 15 h | 67 | Strong coverage |
| July | 28.8°C | 17.9°C | 110 mm | 8.1 | 14 h 45 | 64 | Strong coverage |
| August | 28°C | 17°C | 86 mm | 7.1 | 13 h 45 | 72 | Strong coverage |
| September | 24.7°C | 12.9°C | 79 mm | 6 | 12 h 24 | 85 | Strong coverage |
| October | 18.1°C | 6.9°C | 86 mm | 7.8 | 11 h 04 | 54 | Strong coverage |
| November | 10.5°C | 1.3°C | 93 mm | 8 | 9 h 54 | 18 | Strong coverage |
| December | 4°C | -3.8°C | 77 mm | 8.4 | 9 h 20 | 5 | Strong coverage |
What has changed
Middletown runs +1.1°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
+1.2
Feb
+1.7
Mar
+1.9
Apr
+1.2
May
+1.2
Jun
+0.8
Jul
+0.4
Aug
+0.3
Sep
+0.8
Oct
+1.0
Nov
+0.8
Dec
+2.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C20 Jan 1906 | -31.1°C20 Jan 1985 | 76 mm4 Jan 2005 | 291 mm2005 · driest 4 mm in 1944 | 126 |
| February | 23.9°C20 Feb 2018 | -28.3°C9 Feb 1899 | 60 mm5 Feb 2008 | 147 mm2008 · driest 3 mm in 1935 | 126 |
| March | 29.4°C23 Mar 2026 | -21.7°C2 Mar 1980 | 84 mm23 Mar 2007 | 216 mm1913 · driest 0 mm in 1910 | 129 |
| April | 32.2°C30 Apr 1942 | -8.9°C1 Apr 1969 | 77 mm17 Apr 1922 | 249 mm1922 · driest 19 mm in 1915 | 127 |
| May | 35.6°C28 May 1911 | -5.0°C8 May 2010 | 113 mm30 May 2015 | 257 mm1943 · driest 5 mm in 1895 | 129 |
| June | 41.1°C28 Jun 2012 | 2.2°C23 Jun 1992 | 111 mm28 Jun 1957 | 308 mm1924 · driest 11 mm in 1933 | 130 |
| July | 40.6°C4 Jul 1911 | 5.6°C31 Jul 1895 | 95 mm10 Jul 1925 | 275 mm1925 · driest 6 mm in 1974 | 129 |
| August | 38.9°C5 Aug 1918 | 3.9°C31 Aug 1915 | 94 mm1 Aug 1926 | 219 mm1990 · driest 10 mm in 1996 | 127 |
| September | 39.4°C2 Sep 1953 | -3.3°C30 Sep 1899 | 107 mm1 Sep 2003 | 299 mm1926 · driest 0 mm in 2020 | 128 |
| October | 36.7°C2 Oct 1897 | -9.4°C30 Oct 1895 | 73 mm12 Oct 1901 | 209 mm1919 · driest 0 mm in 1934 | 127 |
| November | 27.2°C1 Nov 1950 | -20.0°C30 Nov 1958 | 87 mm14 Nov 1993 | 216 mm2017 · driest 2 mm in 1917 | 128 |
| December | 23.9°C2 Dec 1982 | -30.0°C22 Dec 1989 | 69 mm23 Dec 1924 | 181 mm2007 · driest 6 mm in 1919 | 128 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 2 | 5 |
| February | 0 | 0 | 21 | 2 | 3 |
| March | <1 | 0 | 17 | 3 | 1 |
| April | 3 | 0 | 5 | 4 | <1 |
| May | 12 | 3 | <1 | 4 | 0 |
| June | 22 | 9 | 0 | 4 | 0 |
| July | 27 | 12 | 0 | 4 | 0 |
| August | 26 | 9 | 0 | 3 | 0 |
| September | 16 | 4 | <1 | 3 | 0 |
| October | 4 | <1 | 3 | 3 | <1 |
| November | <1 | 0 | 13 | 3 | <1 |
| December | 0 | 0 | 23 | 3 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 25% | 7% | 27% | -2.0–6.0°C |
| February | <1% | 23% | 7% | 24% | -0.3–7.6°C |
| March | 8% | 29% | 10% | 34% | 6.0–13.7°C |
| April | 24% | 32% | 11% | 41% | 14.2–19.3°C |
| May | 50% | 32% | 12% | 41% | 19.7–26.0°C |
| June | 68% | 30% | 13% | 32% | 25.2–29.7°C |
| July | 75% | 25% | 12% | 25% | 27.5–31.6°C |
| August | 77% | 23% | 10% | 22% | 26.5–30.4°C |
| September | 68% | 22% | 9% | 20% | 22.8–27.6°C |
| October | 38% | 22% | 8% | 23% | 15.8–22.2°C |
| November | 6% | 27% | 9% | 29% | 7.5–13.7°C |
| December | <1% | 26% | 8% | 29% | 0.1–7.1°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 4923559
- NOAA station
- USC00120177 · ANDERSON 1 N
- Station distance
- 13.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 40.06°, 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.