weather for mobile.

Mobile sits at the head of Mobile Bay where moist tropical air from the Gulf of Mexico meets the slight orographic rise of the coastal plain. The combination of persistent maritime moisture, daily sea-breeze convection, frequent tropical disturbances, and frontal passages from the north produces an average of about 67 inches of rainfall per year — roughly 30 inches more than Seattle and more than any other major continental US metro. The rain arrives in tropical bursts, often delivering several inches in an afternoon.

Mobile sits at one of the most hurricane-vulnerable points on the entire Gulf Coast. The Bay’s funnel geometry amplifies storm surge, and the city’s low elevation means even moderate hurricanes can produce destructive flooding. Both Atlantic and Gulf hurricane seasons threaten the city, with the climatological peak around September 10. Hurricane Frederic (1979), Ivan (2004), and Sally (2020) are all examples of major hurricanes that produced severe damage in or near the metro.

The combination of the warm Gulf of Mexico immediately south, the warm Mobile Bay water in the middle of the city, and the Tensaw and Mobile river deltas to the north produces a constant atmospheric moisture source that few other cities can match. Surface dewpoints routinely hold in the 75–78°F range from May through October — high enough that the heat index can reach 110°F at air temperatures in the low 90s°F. The persistent humidity is the defining feature of Mobile’s warm season.

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.