New Canaan weather in October

In October, New Canaan sees average daytime highs of 62°F and overnight lows near 48°F, with 4.1 in of precipitation across 8.8 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 67°F in the first days to 57°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 New Canaan's 1st-clearest and 7th-windiest month. For the whole year in context, see New Canaan's year-round climate.

Daytime high
62°
6th warmest
Overnight low
48°
7th coldest
Precipitation
4.1 in
8.8 wet days
Daylight
10 h 54 min
6:13 AM – 5:05 PM
Cloud cover
54%
1st clearest
Wind
7 mph
7th windiest
Solar energy
3.06 kWh/m²
Travel score
5.5
out of 10

New Canaan is town in Fairfield County, Connecticut, United States.

Density
339/km²
people per km²
Founded
1731

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 57°F by the end.

A typical October day in New Canaan reaches about 62°F in the afternoon and slips back to 48°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 72°F. Set against its neighbours, October runs about 11°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16854
26853
36753
46753
56752
66652
76651
86551
96551
106550
116450
126450
136449
146349
156349
166248
176248
186247
196147
206147
216046
226046
236046
245946
255945
265845
275844
285844
295744
305743
315743

How October really feels in New Canaan

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.

New Canaan weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 24°3.49.35.39.40.0
Feb39° / 25°3.18.84.410.40.0
Mar47° / 32°4.210.53.711.71.4
Apr58° / 42°3.810.80.613.14.2
May68° / 52°3.511.3014.36.0
Jun78° / 62°3.911.1014.96.5
Jul83° / 67°3.710.9014.75.7
Aug81° / 66°4.110.4013.66.4
Sep74° / 59°3.99.4012.36.9
Oct62° / 48°4.18.80.110.95.5
Nov51° / 38°3.38.50.79.72.7
Dec42° / 30°4.210.13.59.10.3

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 (%)
15347
25347
35347
45446
55446
65446
75446
85446
95446
105446
115446
125446
135446
145347
155347
165248
175248
185248
195248
205248
215149
225050
235050
245050
255050
265050
274951
284951
295050
305050
315050

Chance of precipitation in October

Any precipitation

New Canaan gets around 4.1 in of rain and snow over 8.8 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 29% and peaks near 30% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
629
729
829
929
1029
1129
1229
1330
1430
1530
1630
1730
1830
1929
2029
2129
2229
2329
2429
2529
2628
2728
2828
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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16318136
26418126
36518125
46618115
56818104
6701794
7711793
8721783
9741673
10751573
11771562
12781462
13801352
14811342
15821242
16841141
17851041
1886941
1988831
2088831
2189731
2289731
2389731
2491630
2591630
2691630
2791630
2892620
2992620
3092620
3192620

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
147light breeze
157light 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 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 5:56 AM to 6:30 AM, and sunset from 5:30 PM to 4:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:565:30
211.55:575:28
311.55:585:27
411.45:595:25
511.46:005:23
611.36:015:21
711.36:035:20
811.26:045:18
911.26:055:16
1011.16:065:15
1111.16:075:13
1211.16:085:12
1311.06:095:10
1411.06:105:08
1510.96:125:07
1610.96:135:05
1710.86:145:04
1810.86:155:02
1910.76:165:01
2010.76:174:59
2110.76:184:58
2210.66:204:57
2310.66:214:55
2410.56:224:54
2510.56:234:52
2610.46:244:51
2710.46:264:50
2810.46:274:48
2910.36:284:47
3010.36:294:46
3110.26:304:45

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.06 kWh/m².

For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 6.05 kWh/m² in June across the year — October's 3.06 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
133.2Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.0Moderate
183.0Moderate
193.0Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in October

Hazard calendar for New Canaan

In seasonPeak

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

New Canaan 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 New Canaan?

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

5.5
Sightseeing
6th-best month of the year
1.5
Beach & pool
6th-best month of the year

October is a reasonable time to visit New Canaan for sightseeing.

What to pack for New Canaan in October

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

In October, New Canaan sees daytime highs around 62°F and nights near 48°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near New Canaan 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 offshore is warmest in August at about 74°F and coldest in February near 35°F.

It's comfortable for a long swim from Jun 30 to Sep 30 — about 3.1 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
May55Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec46Bracing

UV index in New Canaan 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 New Canaan 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
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in New Canaan 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 New Canaan 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 New Canaan?

New Canaan sits at 41.1°N, 73.5°W, 318 ft above sea level, in United States. The nearest listed city is North Stamford, 2.5 mi away.

Topography around New Canaan

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

Within 2 miles, the terrain around New Canaan has only modest variations in elevation — a maximum elevation change of 423 ft around an average of 318 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 909 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,913 ft.

The land around New Canaan is covered by trees (86%) within 2 miles, trees (75%) within 10 miles, and trees (58%) and water (26%) within 50 miles.

2 miles
423 ft
10 miles
909 ft
50 miles
1,913 ft
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: North Stamford 2.5 mi · Wilton 4.3 mi · Darien 5.0 mi · Norwalk 5.0 mi · East Norwalk 5.6 mi · Stamford 6.8 mi · Westport 6.8 mi · Fairfield 12 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 New Canaan (41.1468°, -73.4948°, elevation 318 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).