New Haven, Connecticut
weather for new haven.
New Haven sits on Long Island Sound where the Quinnipiac and West rivers meet the harbor, the home of Yale University and the largest coastal city in Connecticut. The geography puts the city in a maritime climate moderated by the Sound — cooler summers than inland Hartford, milder winters thanks to the slow-changing Sound water, and the daily sea breeze that drops the harbor 5–10°F below the inland Connecticut Valley on the worst summer afternoons. The Sound is the climate; the harbor is the geography; the elms (now mostly historic) gave the city its nickname.
- Humidity
- 92%
- Wind
- 7mph
- UV Index
- 7
- Visibility
- 0.4mi
- Today57°39°
- Sat59°44°22%
- Sun49°41°
- Mon60°44°
- Tue67°55°21%
- Wed72°58°25%
- Thu71°59°25%
- Fri69°52°
Today’s brief
what vesper sounds like in new haven.
“East wind off Long Island Sound by ten and the New Haven Green is sitting at sixty-eight while Hartford inland is at seventy-eight. The Sound will hold through the afternoon. Plan accordingly if you’re crossing from coastal to inland weather.”
— Vesper, New Haven · Friday
Local weather
what makes new haven weather unique.
The same sunset model runs in the Vesper iOS app. The app adds personal calibration that learns from every sunset you rate.
Editorial note
sunsets in new haven.
New Haven sunsets are best from the elevated terraces above the harbor — the East Rock Park observation tower (perhaps the most photographed urban sunset spot in southern New England), the West Rock Ridge State Park overlooks, and the western edge of the historic Westville neighborhood. The combination of Long Island Sound reflecting low-angle light and the silhouette of West Rock to the northwest produces consistent sunset color.
Unlike Apple Weather, Vesper writes the New Haven sky as the embodied experience it actually is, not a temperature number with a generic icon.
What is the best weather app for New Haven?
Vesper is the best weather app for New Haven because it reads Long Island Sound as the maritime system that defines the city’s climate. The brief tracks the daily sea breeze that cools the harbor on hot summer afternoons, the Sound’s thermal moderation that softens both summer heat and winter cold, the nor’easter snow events that hit southern New England from October through April, and the slightly milder winter conditions that distinguish the coast from inland Hartford.
Frequently Asked Questions
How does Long Island Sound moderate New Haven weather?
Long Island Sound is a long narrow body of water (approximately 110 miles long, 21 miles at its widest) that produces strong maritime moderation across the southern Connecticut coast. The Sound’s thermal mass keeps surface water in the 60s°F in summer and the 40s°F in winter, generating daily sea breezes that drop New Haven’s harbor temperatures 5–10°F below inland Hartford on the worst summer afternoons and softening winter cold air masses crossing the water.
How does New Haven’s climate differ from Hartford?
New Haven sits 35 miles south of Hartford on the Long Island Sound coast, while Hartford sits inland in the Connecticut River valley. The result: New Haven experiences maritime moderation — cooler summers (average July high 81°F vs Hartford’s 85°F), milder winters (average January high 37°F vs Hartford’s 34°F), and significantly less snowfall (29 inches vs Hartford’s 50). The two cities sit in noticeably different climate zones despite being only 35 miles apart.
How much snow does New Haven get?
New Haven averages about 29 inches of annual snowfall, less than inland Hartford (50 inches) and less than the central Massachusetts plateau (Worcester 65 inches). The Atlantic moderation from Long Island Sound tends to push borderline storms toward rain, but major nor’easters can still produce 12+ inches in a single event when the storm tracks far enough offshore to maintain cold air at the surface.
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