United States · 1991–2020

Best time to visit
Naugatuck.

September leads for comfortable weather in Naugatuck: typically 24.3°C by day, 12.7°C at night, with 121 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.3°C

Typical low12.7°C

Rain in September121 mm

Comfort

September

September · June · August

78climate match

Beach

July

July · August · June

74climate match

Outdoors

May

May · October · September

75climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only 3.1°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

53.1° / -7.1°

Feb

54.7° / -6°

Mar

58.8° / -2.1°

Apr

3315.5° / 3.6°

May

6521.3° / 9°

Jun

7426° / 14.3°

Jul

6629° / 17.5°

Aug

6828.2° / 16.8°

Sep

7824.3° / 12.7°

Oct

4517.7° / 5.8°

Nov

2111.6° / 1°

Dec

55.8° / -3.7°

Monthly climate evidence for Naugatuck — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 41 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	3.1°C	-7.1°C	92 mm	8.3	3.8°C	9 h 29	5	Strong coverage
February	4.7°C	-6°C	83 mm	7.2	1.9°C	10 h 32	5	Strong coverage
March	8.8°C	-2.1°C	111 mm	8.3	2.8°C	11 h 48	5	Strong coverage
April	15.5°C	3.6°C	126 mm	9.4	6.8°C	13 h 16	33	Strong coverage
May	21.3°C	9°C	98 mm	10.2	12.4°C	14 h 29	65	Strong coverage
June	26°C	14.3°C	123 mm	9.5	18.1°C	15 h 10	74	Strong coverage
July	29°C	17.5°C	97 mm	8.2	22.1°C	14 h 54	66	Strong coverage
August	28.2°C	16.8°C	107 mm	8.2	23.1°C	13 h 50	68	Strong coverage
September	24.3°C	12.7°C	121 mm	8.2	21.8°C	12 h 25	78	Strong coverage
October	17.7°C	5.8°C	127 mm	8.4	18.0°C	11 h 01	45	Strong coverage
November	11.6°C	1°C	99 mm	7.3	12.7°C	9 h 47	21	Strong coverage
December	5.8°C	-3.7°C	112 mm	8.6	7.8°C	9 h 11	5	Strong coverage

What has changed

Naugatuck runs +0.9°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

+1.3

Feb

+1.6

Mar

+0.4

Apr

+0.2

May

+0.4

Jun

+0.3

Jul

+1.0

Aug

+0.8

Sep

+1.4

Oct

+0.7

Nov

+0.3

Dec

+2.2

September daytime highs, 2011–2021. Last recorded: 24.7°C.

Records at MT CARMEL, 1936–2021
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C7 Jan 2007	-27.2°C22 Jan 1961	103 mm21 Jan 1979	354 mm1979 · driest 9 mm in 1970	81
February	20.6°C24 Feb 1985	-31.1°C16 Feb 1943	73 mm3 Feb 1999	187 mm1981 · driest 15 mm in 1987	83
March	28.9°C29 Mar 1945	-23.9°C6 Mar 1948	96 mm31 Mar 1987	346 mm1953 · driest 0 mm in 2000	84
April	33.9°C28 Apr 1990	-11.7°C4 Apr 1954	151 mm16 Apr 1996	392 mm1983 · driest 23 mm in 1942	82
May	35.0°C20 May 1996	-5.0°C7 May 2001	133 mm31 May 1940	296 mm1984 · driest 15 mm in 2015	83
June	36.7°C26 Jun 1952	0.0°C1 Jun 1945	149 mm6 Jun 1992	427 mm1982 · driest 8 mm in 1949	81
July	40.0°C4 Jul 1949	3.3°C12 Jul 1945	114 mm29 Jul 1980	406 mm1975 · driest 17 mm in 1968	82
August	38.3°C26 Aug 1948	2.2°C25 Aug 1940	136 mm19 Aug 1991	290 mm1990 · driest 11 mm in 1984	81
September	36.7°C2 Sep 1953	-3.3°C27 Sep 1947	170 mm12 Sep 1960	451 mm1975 · driest 1 mm in 1941	82
October	32.2°C17 Oct 1938	-8.9°C28 Oct 1936	127 mm9 Oct 2005	388 mm2005 · driest 6 mm in 1963	83
November	26.1°C2 Nov 1950	-17.2°C26 Nov 1938	97 mm29 Nov 1937	246 mm1986 · driest 8 mm in 1976	84
December	24.4°C8 Dec 1998	-27.8°C21 Dec 1942	116 mm31 Dec 1948	231 mm1973 · driest 17 mm in 1955	85

Typical days per month at MT CARMEL, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	3	4
February	0	0	25	3	3
March	<1	0	21	3	2
April	2	<1	7	4	<1
May	8	2	<1	3	0
June	19	6	0	4	0
July	28	12	0	3	0
August	27	10	0	3	0
September	15	2	<1	4	0
October	2	<1	4	4	0
November	<1	0	14	3	<1
December	0	0	25	4	2

How often, not how much — every day in MT CARMEL’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%	10%	29%	-0.5–5.8°C
February	<1%	27%	10%	28%	1.2–7.3°C
March	3%	29%	11%	35%	6.1–11.5°C
April	16%	29%	12%	36%	12.5–17.0°C
May	48%	31%	11%	39%	18.5–23.6°C
June	69%	28%	11%	30%	23.9–27.4°C
July	75%	26%	10%	28%	27.0–30.2°C
August	75%	25%	11%	24%	26.5–29.4°C
September	66%	24%	11%	27%	22.3–25.6°C
October	29%	23%	10%	23%	16.3–19.9°C
November	3%	27%	13%	27%	9.1–13.4°C
December	<1%	28%	12%	32%	2.4–7.7°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.

1937Each stripe is one year’s mean temperature against the 72-year average. Warmest: 2020. Coolest: 1947.2021

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4839222
NOAA station: USC00065077 · MT CARMEL
Station distance: 15.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 41.49°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 41 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 MT CARMEL is what differs

Hamden→North Haven→Ansonia→Seymour→Oxford→Prospect→

Or put two places side by side: Naugatuck vs Hamden

Best time to visitNaugatuck.

September

July

May

The whole year,without the guesswork.

Naugatuck runs +0.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Naugatuck.

The whole year,
without the guesswork.

Naugatuck runs +0.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.