Weather WorldLong Key, FL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Long Key Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT |
 |  | | | | | | | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C | Hi: 91°FHi: 33°C | Hi: 91°FHi: 33°C Lo: 81°FLo: 27°C | Hi: 91°FHi: 33°C Lo: 81°FLo: 27°C | Hi: 91°FHi: 33°C | Lo: 81°FLo: 27°C |
| POP: 40% | POP: 40% | POP: 40% | POP: 40% | POP: 30% | POP: 30% | POP: 40% | POP: 30% | POP: 40% | POP: 40% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 405 PM EDT Fri Sep 04 2026 
Long Key Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Long Key Weather Map
Long Key Quick Facts
Long Key Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1040 PM EDT Fri Sep 4 2026
Key Messages
- A moisture surge will support elevated rain and thunder chances through the Labor Day holiday weekend.
- The primary threat for any stronger thunderstorms will be dangerous lightning strikes. When thunder roars, go indoors. If on a boat, stay low, or go below.
- Heat indices will approach the mid 100s daily, with little relief in the muggy conditions overnight. Know the signs of heat stress, take frequent breaks, and stay hydrated.
Discussion
... Issued at 1021 PM EDT Fri Sep 4 2026
Signifi...