Montville Center weather in September

In September, Montville Center sees average daytime highs of 74°F and overnight lows near 57°F, with 4.1 in of rain across 8.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 69°F by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Montville Center's 2nd-clearest and 9th-windiest month. For the whole year in context, see Montville Center's year-round climate.

Daytime high
74°
4th warmest
Overnight low
57°
9th coldest
Rainfall
4.1 in
8.8 wet days
Daylight
12 h 18 min
5:35 AM – 5:51 PM
Cloud cover
55%
2nd clearest
Wind
7 mph
9th windiest
Solar energy
4.31 kWh/m²
Travel score
7.0
out of 10

Montville Center is town in New London County, Connecticut, United States.

Density
176/km²
people per km²
Founded
1786

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 78°F in the first days to 69°F by the end.

A typical September day in Montville Center reaches about 74°F in the afternoon and slips back to 57°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 81°F. Set against its neighbours, September runs about 7°F cooler than August and about 11°F warmer than October.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17862
27861
37861
47761
57761
67760
77660
87660
97659
107659
117559
127558
137458
147458
157457
167357
177357
187356
197356
207256
217255
227155
237155
247155
257054
267054
276953
286953
296953
306852

How September really feels in Montville Center

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 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
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Montville Center weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.69.75.19.30.0
Feb39° / 24°3.18.84.710.30.0
Mar47° / 31°4.310.43.811.71.4
Apr58° / 41°3.8110.713.14.1
May67° / 50°3.311.2014.36.0
Jun77° / 60°3.911.1014.96.5
Jul83° / 66°3.610.8014.75.8
Aug81° / 64°4.310.7013.76.4
Sep74° / 57°4.18.8012.37.0
Oct62° / 47°4.29.40.110.95.5
Nov52° / 37°3.68.60.79.72.8
Dec42° / 29°4.410.53.79.10.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25248
35248
45248
55248
65248
75248
85248
95248
105347
115347
125347
135347
145248
155248
165248
175248
185248
195149
205149
215050
225050
234951
245149
255050
265050
275149
285149
295149
305149

Chance of precipitation in September

Any precipitation

Montville Center gets around 4.1 in of rain over 8.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
327
427
527
627
727
827
927
1027
1128
1228
1328
1428
1528
1628
1728
1828
1929
2029
2129
2230
2330
2431
2531
2631
2731
2832
2932
3032

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1272622197
2272622187
3282621187
4292521177
5302521177
6312521166
7322521166
8332421166
9342421165
10362321165
11372320155
12382220154
13402220154
14412220153
15422119143
16442119142
17452118142
18462118142
19472117132
20482117131
21502016131
22522015121
23522015121
24542014111
25551914111
26561914101
2757191491
2860181381
2960181381
3063171370

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 5:19 AM to 5:50 AM, and sunset from 6:18 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:196:18
212.95:206:16
312.95:216:14
412.85:226:12
512.85:236:11
612.75:246:09
712.75:256:07
812.75:266:05
912.65:276:04
1012.65:286:02
1112.55:296:00
1212.55:315:58
1312.45:325:57
1412.45:335:55
1512.35:345:53
1612.35:355:51
1712.25:365:49
1812.25:375:48
1912.15:385:46
2012.15:395:44
2112.05:405:42
2212.05:415:40
2311.95:425:39
2411.95:435:37
2511.85:445:35
2611.85:455:33
2711.85:465:31
2811.75:475:30
2911.75:495:28
3011.65:505:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.31 kWh/m².

For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 6.18 kWh/m² in June across the year — September's 4.31 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.8Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Montville Center

In seasonPeak

In September, Montville Center sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Montville Center 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 September a good time to visit Montville Center?

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

7.0
Sightseeing
1st-best month of the year
5.4
Beach & pool
4th-best month of the year

September is one of the better times to visit Montville Center for general sightseeing.

What to pack for Montville Center in September

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

In September, Montville Center sees daytime highs around 74°F and nights near 57°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Montville Center in September

The nearest coast averages about 68°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 mi away) is warmest in August at about 71°F and coldest in February near 39°F.

It's comfortable for a long swim from Jul 15 to Sep 15 — about 2.1 months when the water holds above 68°F.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan42Bracing
Feb39Bracing
Mar39Bracing
Apr44Bracing
May52Bracing
Jun61Cool
Jul69Refreshing
Aug71Refreshing
Sep68Refreshing
Oct63Cool
Nov55Bracing
Dec48Bracing

UV index in Montville Center in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Montville Center 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 Montville Center in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Montville Center 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 Montville Center?

Montville Center sits at 41.5°N, 72.2°W, 374 ft above sea level, in United States. The nearest listed city is Norwich, 5.0 mi away.

Topography around Montville Center

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

Within 2 miles, the terrain around Montville Center has only modest variations in elevation — a maximum elevation change of 551 ft around an average of 371 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 669 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,325 ft.

The land around Montville Center is covered by trees (89%) within 2 miles, trees (84%) within 10 miles, and trees (56%) and water (36%) within 50 miles.

2 miles
551 ft
10 miles
669 ft
50 miles
1,325 ft
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Norwich 5.0 mi · Ledyard 7.5 mi · New London 8.7 mi · Waterford 9.3 mi · Windham 16 mi · Willimantic 16 mi · Westerly 18 mi · Plainfield 18 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 Montville Center (41.479°, -72.1512°, elevation 374 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).