weather for new haven.

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.

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.

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.

Vesper replaces template-driven forecasts with short editorial briefs written in an authorial voice, and publicly grades its own sunset predictions through Sunset Verify. Every other weather app on the market generates its text by filling variables into a template. Vesper writes each forecast as original prose with a point of view about the day.

Vesper is free to download with core weather features. Premium features and pricing will be announced at launch.

Sunset Verify is Vesper's signature feature that predicts sunset quality each day from live atmospheric data and lets users verify the prediction with a photo, building a personal accuracy track record over time.

Vesper is currently in beta. Join the waitlist at vespersky.ai/beta to get early access and be notified when the app launches on iOS and Android.

An editorial weather app applies a point of view to the same atmospheric data every other app has. Instead of showing you a grid of numbers, it writes a short brief — two or three sentences with intent — about what the day is going to feel like and what you should probably do about it. The data is identical. The voice is the product.

Vesper's briefs are generated by a language model operating under an editorial style guide written by people and refined through thousands of examples. The style guide, cut discipline, and voice rules are the content. The model is the mechanism. Template weather apps are generated by models that were never given an editorial style guide, which is why they all sound identical.

Vesper does not ship radar maps or a proprietary severe weather alert system. Severe weather alerts come through the operating system, which is the right place for them. Radar was rejected because a radar map is not a brief and would not make the forecast more worth reading. We respect both as product decisions. We are doing something different.

Vesper publishes editorial weather coverage for over 100 US cities with full daily briefs and all 50 state hubs with region-specific editorial context. The mobile app gives you a brief wherever you are — anywhere Vesper has weather data coverage, which is essentially every populated area in the world.

Yes. Vesper uses your approximate location only to deliver weather forecasts for your area. Location data is not stored on our servers, not sold, and not shared with third parties. Photos taken through Sunset Verify stay on your device and never leave your phone.

A fresh editorial brief is generated every morning based on that day’s forecast. Inside the app, live conditions update continuously based on your location. The editorial brief is a once-a-day artifact — written to be read in the morning, not refreshed hourly.

Yes. Vesper does not require an account to read the daily brief, check sunset predictions, or use the editorial features. Personal data like Sunset Verify history is stored locally on your device, so there is no cloud account to create.