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City of St. Augustine, FloridaSt. Augustine, FL Weather Forecast
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St. Augustine Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| 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 |
| Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 90°FHi: 32°C | Lo: 75°FLo: 24°C | Hi: 90°FHi: 32°C | Hi: 90°FHi: 32°C Lo: 75°FLo: 24°C | Hi: 90°FHi: 32°C Lo: 75°FLo: 24°C | Hi: 89°FHi: 32°C Lo: 75°FLo: 24°C | Hi: 89°FHi: 32°C Lo: 75°FLo: 24°C | Hi: 85°FHi: 29°C | Lo: 75°FLo: 24°C | Hi: 85°FHi: 29°C |
| POP: 70% | POP: 60% | POP: 50% | POP: 50% | POP: 40% | POP: 40% | POP: 40% | POP: 50% | POP: 50% | POP: 60% | POP: 50% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1027 AM EDT Fri Sep 11 2026 
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Issued: 233 PM EDT Fri Sep 11 2026
Key Messages
For the latest NE FL and SE GA Daily Key Messages please visit: https:/www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf- Numerous Afternoon and Evening Thunderstorms Expected through Saturday. Strong Storm Potential Along the I-95 Corridor During the Late Afternoon Hours. Stronger Storms May Produce Wind Gusts of 40-55 mph, Frequent Lightning Strikes, and Torrential Downpours that Could Result in Localized Flooding.
- Daily Peak Heat Index Values of 104-108 Degrees Expected thro...