Southbury weather in October

In October, Southbury sees average daytime highs of 62°F and overnight lows near 46°F, with 4.2 in of precipitation across 9.1 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 67°F in the first days to 56°F by the end. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 12 min by month's end. Set against the rest of the year, October is Southbury's 1st-clearest and 7th-windiest month. For the whole year in context, see Southbury's year-round climate.

Daytime high
62°
6th warmest
Overnight low
46°
7th coldest
Precipitation
4.2 in
9.1 wet days
Daylight
10 h 54 min
6:12 AM – 5:04 PM
Cloud cover
54%
1st clearest
Wind
7 mph
7th windiest
Solar energy
3.03 kWh/m²
Travel score
5.3
out of 10

Southbury is town in New Haven County, Connecticut, United States.

Density
191/km²
people per km²
Founded
1787

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 67°F in the first days to 56°F by the end.

A typical October day in Southbury reaches about 62°F in the afternoon and slips back to 46°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 72°F. Set against its neighbours, October runs about 12°F cooler than September and about 11°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16751
26751
36751
46650
56650
66549
76549
86549
96448
106448
116448
126347
136347
146247
156246
166246
176146
186145
196045
206044
216044
225944
235944
245843
255843
265842
275742
285742
295642
305641
315641

How October really feels in Southbury

Once humidity and wind are folded in, October 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

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

Southbury weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan36° / 22°3.59.45.79.30.0
Feb38° / 23°3.18.85.110.30.0
Mar46° / 31°4.211.24.111.71.2
Apr58° / 41°3.811.3113.14.0
May67° / 50°3.612.1014.35.9
Jun77° / 60°4.112014.96.4
Jul82° / 65°3.911.1014.75.9
Aug80° / 64°4.310.6013.76.4
Sep73° / 57°4.19.2012.36.9
Oct62° / 46°4.29.10.210.95.3
Nov50° / 36°3.58.819.72.4
Dec40° / 28°4.210.34.39.10.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25347
35347
45446
55446
65446
75446
85545
95545
105545
115545
125545
135446
145446
155347
165347
175347
185248
195248
205149
215149
225149
235050
244951
254951
265050
274951
284951
295050
304951
314951

Chance of precipitation in October

Any precipitation

Southbury gets around 4.2 in of rain and snow over 9.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
331
431
531
630
730
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2030
2130
2230
2330
2430
2529
2629
2729
2829
2928
3028
3128

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16716125
26915115
37015105
4721594
5721594
6751483
7761473
8771373
9791362
10801262
11811252
12821152
13841042
14841042
1587931
1688831
1788831
1889731
1989731
2090631
2190631
2290631
2390631
2491630
2592620
2692620
2792620
2892620
2993520
3093520
3194510

Wind in October

Winds average 7 mph in October.

Across October, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157light breeze
167light 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 October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 5:55 AM to 6:30 AM, and sunset from 5:29 PM to 4:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:555:29
211.55:565:27
311.55:575:25
411.45:585:23
511.45:595:22
611.36:015:20
711.36:025:18
811.26:035:17
911.26:045:15
1011.16:055:13
1111.16:065:12
1211.06:075:10
1311.06:085:09
1411.06:105:07
1510.96:115:05
1610.96:125:04
1710.86:135:02
1810.86:145:01
1910.76:154:59
2010.76:174:58
2110.66:184:56
2210.66:194:55
2310.66:204:53
2410.56:214:52
2510.56:234:51
2610.46:244:49
2710.46:254:48
2810.36:264:47
2910.36:274:45
3010.36:294:44
3110.26:304:43

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.03 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.06 kWh/m² in June across the year — October's 3.03 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.4Moderate
63.4Moderate
73.4Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.2Moderate
123.2Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.0Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Hazard calendar for Southbury

In seasonPeak

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

Southbury 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 October a good time to visit Southbury?

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

5.3
Sightseeing
6th-best month of the year
1.2
Beach & pool
6th-best month of the year

October is a reasonable time to visit Southbury for sightseeing.

What to pack for Southbury in October

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

In October, Southbury sees daytime highs around 62°F and nights near 46°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Southbury in October

The nearest coast averages about 64°F in October — 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 74°F and coldest in February near 35°F.

It's comfortable for a long swim from Jul 1 to Sep 30 — about 3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb35Bracing
Mar37Bracing
Apr44Bracing
May54Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec46Bracing

UV index in Southbury in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Southbury peaks around July 11 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 11UV 8Dec 23UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun7Very high
Jul8Very high
Aug5High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Southbury in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Southbury is worst in July — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (November, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateJul 1220 µg/m³Nov 1612 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar17Moderate
Apr17Moderate
May18Moderate
Jun19Moderate
Jul20Moderate
Aug17Moderate
Sep16Moderate
Oct13Moderate
Nov11Good
Dec13Moderate
Location & terrain

Where is Southbury?

Southbury sits at 41.5°N, 73.2°W, 249 ft above sea level, in United States. The nearest listed city is Naugatuck, 8.7 mi away.

Topography around Southbury

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

Within 2 miles, the terrain around Southbury has only modest variations in elevation — a maximum elevation change of 633 ft around an average of 407 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,050 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,815 ft.

The land around Southbury is covered by trees (86%) within 2 miles, trees (85%) within 10 miles, and trees (74%) within 50 miles.

2 miles
633 ft
10 miles
1,050 ft
50 miles
2,815 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Naugatuck 8.7 mi · Seymour 9.3 mi · Waterbury 9.9 mi · Ansonia 12 mi · Shelton 13 mi · Danbury 14 mi · Wolcott 14 mi · Cheshire 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 Southbury (41.4815°, -73.2132°, elevation 249 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).