Norwich weather in January

In January, Norwich sees average daytime highs of 37°F and overnight lows near 24°F, with 3.6 in of precipitation across 9.7 wet days and about 9.3 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 37°F through the month. The sky is clear or mostly clear about 36% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of January to 9 h 48 min by month's end. Set against the rest of the year, January is Norwich's 5th-clearest and 1st-windiest month. For the whole year in context, see Norwich's year-round climate.

Daytime high
37°
12th warmest
Overnight low
24°
1st coldest
Precipitation
3.6 in
9.7 wet days
Daylight
9 h 18 min
7:18 AM – 4:37 PM
Cloud cover
57%
5th clearest
Wind
8 mph
1st windiest
Solar energy
2.07 kWh/m²
Travel score
0.0
out of 10

Norwich is city in New London County, Connecticut, United States.

Density
524/km²
people per km²
Founded
1659

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 37°F through the month.

A typical January day in Norwich reaches about 37°F in the afternoon and slips back to 24°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 24°F and 50°F. Set against its neighbours, January runs about 5°F cooler than December and about 2°F cooler than February.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
13926
23926
33926
43926
53926
63826
73825
83825
93825
103825
113825
123724
133724
143724
153724
163724
173723
183723
193723
203623
213623
223623
233623
243623
253623
263723
273723
283723
293723
303723
313723

How January really feels in Norwich

Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
31
15 feel bitter (≤ 14°F)

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Norwich weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 24°3.69.759.30.0
Feb39° / 25°3.28.84.610.30.0
Mar46° / 32°4.410.43.911.71.4
Apr58° / 41°3.910.90.813.14.1
May67° / 50°3.210.5014.36.0
Jun76° / 60°3.810.5014.96.6
Jul82° / 66°3.510.2014.76.0
Aug80° / 65°4.210.3013.76.5
Sep73° / 58°4.08.7012.37.0
Oct63° / 47°4.29.10.110.95.6
Nov52° / 37°3.78.70.79.72.8
Dec42° / 29°4.510.63.590.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34951
44951
54852
64852
74852
84852
94753
104753
114951
124951
134951
144951
154852
164951
174951
184852
194852
204951
214951
224951
234951
244951
254951
265050
275050
285050
295050
304951
314951

Chance of precipitation in January

Any precipitationSnow

Norwich gets around 3.6 in of rain and snow over 9.7 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 31% and peaks near 34% on the wettest days, and about 5 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13314
23315
33415
43416
53416
63416
73417
83417
93417
103417
113418
123318
133318
143318
153217
163217
173217
183117
193116
203016
213016
222916
232915
242815
252815
262814
272714
282714
292814
302814
312814

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 8 mph in January, the windiest month of the year.

Across January, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 hours at the start of January to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:20 AM to 7:09 AM, and sunset from 4:23 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:204:23
29.17:204:24
39.17:204:24
49.17:204:25
59.17:204:26
69.17:204:27
79.17:204:28
89.17:204:29
99.27:204:30
109.27:204:31
119.27:204:32
129.27:204:33
139.27:194:34
149.37:194:35
159.37:194:36
169.37:184:37
179.37:184:38
189.47:184:39
199.47:174:40
209.47:174:41
219.47:164:42
229.57:154:44
239.57:154:45
249.57:144:46
259.67:144:47
269.67:134:48
279.67:124:49
289.77:114:51
299.77:114:52
309.77:104:53
319.87:094:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.07 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.18 kWh/m² in June across the year — January's 2.07 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.9Dim
91.9Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
142.0Dim
152.0Moderate
162.0Moderate
172.1Moderate
182.1Moderate
192.1Moderate
202.2Moderate
212.2Moderate
222.2Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in January

Hazard calendar for Norwich

In seasonPeak

None of Norwich's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Norwich sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Norwich?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Norwich.

What to pack for Norwich in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Norwich sees daytime highs around 37°F and nights near 24°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Norwich in January

The nearest coast averages about 43°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 mi away) is warmest in August at about 69°F and coldest in February near 39°F.

It's comfortable for a long swim from Jul 29 to Aug 30 — about 1.1 months when the water holds above 68°F.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan43Bracing
Feb39Bracing
Mar40Bracing
Apr44Bracing
May51Bracing
Jun60Cool
Jul67Cool
Aug69Refreshing
Sep67Cool
Oct62Cool
Nov55Bracing
Dec48Bracing

UV index in Norwich in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Norwich peaks around July 10 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 10UV 8Dec 23UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug5High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Norwich in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Norwich is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1515 µg/m³Nov 206 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr12Good
May14Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Norwich?

Norwich sits at 41.5°N, 72.1°W, 56 ft above sea level, in United States. The nearest listed city is Montville Center, 5.0 mi away.

Topography around Norwich

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Norwich.

Within 2 miles, the terrain around Norwich has only modest variations in elevation — a maximum elevation change of 397 ft around an average of 157 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 650 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,325 ft.

The land around Norwich is covered by trees (76%) within 2 miles, trees (84%) within 10 miles, and trees (58%) and water (34%) within 50 miles.

2 miles
397 ft
10 miles
650 ft
50 miles
1,325 ft
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Montville Center 5.0 mi · Ledyard 6.8 mi · New London 12 mi · Windham 13 mi · Waterford 13 mi · Plainfield 14 mi · Willimantic 14 mi · Westerly 16 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Norwich (41.5243°, -72.0759°, elevation 56 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).