United States · 1991–2020

Best time to visit
Middletown.

September leads for comfortable weather in Middletown: typically 25.9°C by day, 12.1°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.9°C

Typical low12.1°C

Rain in September71 mm

Comfort

September

September · May · August

81climate match

Beach

August

August · July · June

77climate match

Outdoors

October

October · September · May

77climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only 3.5°C, 20° 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

53.5° / -6.4°

Feb

56.2° / -4.6°

Mar

1811.4° / -0.4°

Apr

4518.2° / 4.7°

May

7323.4° / 10.8°

Jun

6927.8° / 15.7°

Jul

6330° / 17.6°

Aug

7229.3° / 16.5°

Sep

8125.9° / 12.1°

Oct

5719.1° / 5.3°

Nov

2411.8° / 0.2°

Dec

55.8° / -3.7°

Monthly climate evidence for Middletown — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.5°C	-6.4°C	73 mm	7.6	9 h 40	5	Strong coverage
February	6.2°C	-4.6°C	60 mm	6.4	10 h 39	5	Strong coverage
March	11.4°C	-0.4°C	87 mm	8.9	11 h 49	18	Strong coverage
April	18.2°C	4.7°C	110 mm	9.9	13 h 11	45	Strong coverage
May	23.4°C	10.8°C	109 mm	10.4	14 h 19	73	Strong coverage
June	27.8°C	15.7°C	119 mm	9.1	14 h 56	69	Strong coverage
July	30°C	17.6°C	94 mm	7.9	14 h 42	63	Strong coverage
August	29.3°C	16.5°C	70 mm	5.7	13 h 43	72	Strong coverage
September	25.9°C	12.1°C	71 mm	5.9	12 h 24	81	Strong coverage
October	19.1°C	5.3°C	79 mm	7	11 h 05	57	Strong coverage
November	11.8°C	0.2°C	74 mm	7.6	9 h 57	24	Strong coverage
December	5.8°C	-3.7°C	83 mm	7.4	9 h 23	5	Strong coverage

What has changed

Middletown runs +1.0°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

+0.9

Feb

+2.6

Mar

+1.7

Apr

+0.5

May

+0.6

Jun

+0.3

Jul

+0.8

Aug

+0.3

Sep

+0.9

Oct

+0.7

Nov

0.0

Dec

+2.3

September daytime highs, 2011–2025. Last recorded: 27.8°C.

Records at FRANKLIN, 1953–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C24 Jan 1967	-31.7°C29 Jan 1963	76 mm7 Jan 2010	182 mm1959 · driest 6 mm in 1981	71
February	25.6°C28 Feb 2000	-24.4°C3 Feb 1985	58 mm2 Feb 1988	169 mm2019 · driest 0 mm in 2010	69
March	30.0°C23 Mar 2026	-21.7°C3 Mar 1980	73 mm5 Mar 1963	246 mm1964 · driest 20 mm in 1960	70
April	31.1°C25 Apr 1960	-7.8°C5 Apr 1995	71 mm29 Apr 1996	275 mm2011 · driest 17 mm in 1962	72
May	35.0°C19 May 1962	-2.8°C1 May 1963	105 mm19 May 2020	308 mm1968 · driest 5 mm in 2007	72
June	37.8°C26 Jun 1988	3.3°C10 Jun 1988	101 mm19 Jun 2021	274 mm2015 · driest 11 mm in 1962	70
July	40.0°C5 Jul 2002	5.6°C1 Jul 1988	130 mm21 Jul 1973	253 mm1958 · driest 13 mm in 1974	73
August	38.3°C4 Aug 1964	3.9°C30 Aug 1986	79 mm29 Aug 1994	182 mm1974 · driest 3 mm in 2003	70
September	38.3°C2 Sep 1953	-1.7°C30 Sep 1963	111 mm14 Sep 1979	185 mm1971 · driest 5 mm in 1963	69
October	34.4°C3 Oct 2019	-8.9°C27 Oct 1962	67 mm20 Oct 1993	184 mm1983 · driest 4 mm in 1963	69
November	27.2°C1 Nov 2016	-22.8°C30 Nov 1958	71 mm5 Nov 2017	222 mm1985 · driest 14 mm in 1991	69
December	23.3°C3 Dec 1982	-29.4°C22 Dec 1989	68 mm22 Dec 1998	214 mm1990 · driest 10 mm in 1976	67

Typical days per month at FRANKLIN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	24	2	<1
February	<1	0	22	2	<1
March	<1	0	17	3	<1
April	4	<1	6	4	0
May	13	3	<1	4	0
June	23	10	0	4	0
July	27	16	0	3	0
August	26	13	0	2	0
September	18	6	0	2	0
October	5	<1	4	2	0
November	<1	0	15	3	<1
December	0	0	22	3	<1

How often, not how much — every day in FRANKLIN’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	<1%	27%	8%	32%	-0.7–6.1°C
February	1%	27%	8%	29%	1.2–8.9°C
March	9%	30%	10%	36%	7.6–14.7°C
April	25%	33%	12%	44%	15.0–20.1°C
May	51%	34%	12%	44%	20.5–26.4°C
June	69%	30%	13%	35%	25.7–29.4°C
July	73%	27%	11%	29%	28.6–31.6°C
August	78%	23%	9%	20%	27.6–30.8°C
September	72%	22%	9%	19%	23.8–28.2°C
October	38%	22%	8%	22%	16.8–21.5°C
November	9%	28%	9%	30%	8.4–14.8°C
December	<1%	27%	9%	31%	1.8–9.0°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.

1954Each stripe is one year’s mean temperature against the 53-year average. Warmest: 2016. Coolest: 1978.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4518264
NOAA station: USC00332928 · FRANKLIN
Station distance: 8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 39.52°, 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.

These places read the same station, so their numbers are identical — distance from FRANKLIN is what differs

Lebanon→Monroe→Franklin→Germantown→Carlisle→Mayfield→

Or put two places side by side: Middletown vs Lebanon

Best time to visitMiddletown.