United States · 1991–2020

Best time to visit
Uncasville.

September leads for comfortable weather in Uncasville: typically 24.5°C by day, 12.2°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.5°C

Typical low12.2°C

Rain in September116 mm

Comfort

September

September · June · May

78climate match

Beach

July

July · August · June

75climate match

Outdoors

May

May · October · September

76climate match

The weakest month is January, scoring 5 against September’s 78 — 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° / -6.5°

Feb

55° / -5.4°

Mar

59.1° / -1.9°

Apr

3515.5° / 3.4°

May

6721.5° / 8.9°

Jun

7626.2° / 14.2°

Jul

6629.2° / 17.7°

Aug

6728.4° / 16.7°

Sep

7824.5° / 12.2°

Oct

4718° / 6°

Nov

2111.9° / 0.7°

Dec

56.4° / -3.2°

Monthly climate evidence for Uncasville — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 34 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	3.5°C	-6.5°C	100 mm	8.9	5.6°C	9 h 29	5	Strong coverage
February	5°C	-5.4°C	90 mm	7.9	3.8°C	10 h 32	5	Strong coverage
March	9.1°C	-1.9°C	129 mm	8.5	4.1°C	11 h 48	5	Strong coverage
April	15.5°C	3.4°C	114 mm	8.9	6.7°C	13 h 16	35	Strong coverage
May	21.5°C	8.9°C	94 mm	9.4	11.0°C	14 h 29	67	Strong coverage
June	26.2°C	14.2°C	113 mm	8.2	16.1°C	15 h 09	76	Strong coverage
July	29.2°C	17.7°C	90 mm	7.8	20.3°C	14 h 53	66	Strong coverage
August	28.4°C	16.7°C	116 mm	7.1	21.4°C	13 h 50	67	Strong coverage
September	24.5°C	12.2°C	116 mm	7.2	20.1°C	12 h 25	78	Strong coverage
October	18°C	6°C	126 mm	8.1	17.0°C	11 h 01	47	Strong coverage
November	11.9°C	0.7°C	103 mm	7.5	12.8°C	9 h 48	21	Strong coverage
December	6.4°C	-3.2°C	121 mm	8.7	9.0°C	9 h 12	5	Strong coverage

What has changed

Uncasville runs +0.7°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

+0.5

Feb

+1.3

Mar

+0.2

Apr

+0.1

May

+0.3

Jun

+0.3

Jul

+1.2

Aug

+1.0

Sep

+1.1

Oct

+0.6

Nov

+0.4

Dec

+1.8

September daytime highs, 2011–2025. Last recorded: 24.8°C.

Records at NORWICH PUBLIC UTILITY PLT, 1956–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C13 Jan 2020	-29.4°C21 Jan 1994	96 mm10 Jan 2024	357 mm1979 · driest 11 mm in 1970	69
February	22.2°C18 Feb 1981	-27.2°C5 Feb 1996	73 mm14 Feb 2008	223 mm2008 · driest 12 mm in 1987	68
March	29.4°C31 Mar 1998	-18.3°C3 Mar 1962	141 mm30 Mar 2010	464 mm2010 · driest 18 mm in 2006	69
April	34.4°C18 Apr 2002	-8.3°C21 Apr 1981	109 mm14 Apr 2004	329 mm1983 · driest 9 mm in 1957	67
May	36.7°C20 May 1996	-2.8°C9 May 1985	110 mm13 May 2006	225 mm1984 · driest 8 mm in 2015	68
June	38.3°C25 Jun 2025	0.6°C10 Jun 1983	155 mm5 Jun 1982	373 mm1998 · driest 2 mm in 1999	65
July	38.3°C15 Jul 1995	6.1°C1 Jul 1988	122 mm2 Jul 2009	350 mm2009 · driest 25 mm in 2022	67
August	38.9°C10 Aug 2001	4.4°C30 Aug 1986	132 mm19 Aug 1991	313 mm1991 · driest 12 mm in 2015	66
September	36.1°C11 Sep 1983	-1.7°C29 Sep 1957	161 mm2 Sep 2021	307 mm2018 · driest 17 mm in 1962	68
October	31.1°C16 Oct 1956	-7.8°C30 Oct 1980	157 mm15 Oct 2005	387 mm2005 · driest 12 mm in 2013	68
November	26.7°C8 Nov 2022	-14.4°C24 Nov 1989	82 mm24 Nov 2006	273 mm1983 · driest 1 mm in 2012	69
December	25.0°C7 Dec 1998	-25.0°C26 Dec 1980	115 mm11 Dec 2023	244 mm1969 · driest 29 mm in 1980	69

Typical days per month at NORWICH PUBLIC UTILITY PLT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	4
February	0	0	22	3	3
March	<1	0	20	4	2
April	2	<1	7	3	<1
May	8	2	<1	3	0
June	19	6	0	3	0
July	28	14	0	2	0
August	27	11	0	3	0
September	14	2	<1	3	0
October	2	<1	4	4	0
November	<1	0	14	3	<1
December	0	0	23	4	2

How often, not how much — every day in NORWICH PUBLIC UTILITY PLT’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%	11%	29%	0.5–6.4°C
February	<1%	26%	10%	28%	2.0–7.7°C
March	3%	28%	12%	33%	6.5–11.4°C
April	17%	29%	11%	35%	13.6–17.2°C
May	49%	30%	11%	38%	19.1–23.5°C
June	71%	26%	10%	27%	24.3–27.4°C
July	75%	24%	9%	23%	27.2–30.1°C
August	77%	23%	10%	23%	26.5–29.6°C
September	68%	23%	11%	24%	22.8–25.4°C
October	29%	23%	11%	24%	16.5–19.9°C
November	4%	26%	12%	29%	9.9–14.1°C
December	<1%	29%	13%	34%	3.5–8.9°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.

1957Each stripe is one year’s mean temperature against the 51-year average. Warmest: 2012. Coolest: 1958.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4844602
NOAA station: USC00065910 · NORWICH PUBLIC UTILITY PLT
Station distance: 10.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 41.43°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 34 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 NORWICH PUBLIC UTILITY PLT is what differs

Norwich→Montville Center→Preston City→Lisbon→Salem→Jewett City→

Or put two places side by side: Uncasville vs Norwich

Best time to visitUncasville.

September

July

May

The whole year,without the guesswork.

Uncasville runs +0.7°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Uncasville.

The whole year,
without the guesswork.

Uncasville runs +0.7°C
on the 1961–1990 baseline.

Nearby, measured,
and named.