New Canaan weather in July

In July, New Canaan sees average daytime highs of 83°F and overnight lows near 67°F, with 3.7 in of rain across 10.9 wet days and about 14.7 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 29% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 18 min by month's end. Set against the rest of the year, July is New Canaan's 5th-clearest and 11th-windiest month. For the whole year in context, see New Canaan's year-round climate.

Daytime high
83°
1st warmest
Overnight low
67°
12th coldest
Rainfall
3.7 in
10.9 wet days
Daylight
14 h 42 min
4:39 AM – 7:20 PM
Cloud cover
59%
5th clearest
Wind
6 mph
11th windiest
Solar energy
6.04 kWh/m²
Travel score
5.7
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 July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 83°F through the month.

A typical July day in New Canaan reaches about 83°F in the afternoon and slips back to 67°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 91°F. Set against its neighbours, July runs about 5°F warmer than June and about 2°F warmer than August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18266
28266
38266
48267
58267
68367
78367
88367
98367
108367
118367
128367
138368
148368
158368
168368
178368
188368
198368
208368
218368
228368
238368
248368
258368
268368
278368
288368
298368
308368
318368

How July really feels in New Canaan

Once humidity and wind are folded in, July 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

July 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 July compares with the rest of the year at a glance. July is the 1st-warmest and 8th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 23% of July, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55149
65248
75347
85347
95347
105446
115446
125446
135446
145446
155446
165446
175347
185347
195149
205149
215149
225050
235050
244951
254951
265050
274951
284951
295050
305050
315050

Chance of precipitation in July

Any precipitation

New Canaan gets around 3.7 in of rain over 10.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
333
433
533
633
733
833
933
1033
1133
1234
1334
1434
1535
1635
1736
1836
1937
2037
2138
2238
2338
2438
2538
2638
2738
2838
2938
3037
3137

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1142327269
21423272610
31422272610
41422272611
51522272611
61521272611
71521272611
81421272612
91420272712
101420272712
111420272812
121319272912
131319263012
141219263112
151219263112
161218263212
171118263212
181118253312
191018253413
201018253413
21918263513
22917263513
23917263513
24817263513
25816273513
26816273513
27916273413
28916283414
29916283414
301016283314
311016283214

Wind in July

Winds average 6 mph in July.

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

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:29 AM to 4:52 AM, and sunset from 7:25 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:297:25
214.94:307:25
314.94:307:25
414.94:317:25
514.94:317:25
614.94:327:24
714.94:337:24
814.84:337:24
914.84:347:24
1014.84:347:23
1114.84:357:23
1214.84:367:22
1314.84:377:22
1414.74:377:21
1514.74:387:21
1614.74:397:20
1714.74:407:20
1814.64:407:19
1914.64:417:18
2014.64:427:18
2114.64:437:17
2214.54:447:16
2314.54:457:15
2414.54:467:15
2514.54:477:14
2614.44:477:13
2714.44:487:12
2814.44:497:11
2914.34:507:10
3014.34:517:09
3114.34:527:08

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.04 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 — July's 6.04 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.1Intense
156.1Intense
166.1Intense
176.0Intense
186.0Intense
196.0Bright
206.0Bright
215.9Bright
225.9Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in July

Hazard calendar for New Canaan

In seasonPeak

In July, 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 July a good time to visit New Canaan?

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

5.7
Sightseeing
5th-best month of the year
6.7
Beach & pool
1st-best month of the year

July is a reasonable time to visit New Canaan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for New Canaan in July

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

In July, New Canaan sees daytime highs around 83°F and nights near 67°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

Sea temperature near New Canaan in July

The nearest coast averages about 72°F in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — 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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).