Expires:202512211045;;936814 FPUS52 KJAX 202137 ZFPJAX Zone Forecast Product for Northeast Florida and Southeast Georgia National Weather Service Jacksonville FL 437 PM EST Sat Dec 20 2025 FLZ124-211045- Coastal Nassau- Including the cities of Amelia City, Fernandina Beach, and Yulee 437 PM EST Sat Dec 20 2025 .TONIGHT...Clear this evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 40s. Northeast winds 5 to 10 mph, becoming north after midnight. .SUNDAY...Areas of fog in the morning. Sunny. Highs in the upper 60s. Northwest winds 5 to 10 mph, becoming northeast in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows around 50. Northeast winds 10 to 15 mph. Gusts up to 30 mph after midnight. .MONDAY...Sunny. Highs in the mid 60s. Northeast winds 15 to 20 mph with gusts up to 35 mph. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph. Gusts up to 25 mph in the evening. .TUESDAY...Sunny. Highs in the lower 70s. .TUESDAY NIGHT...Clear. Lows in the lower 50s. .WEDNESDAY...Sunny. Highs in the lower 70s. .WEDNESDAY NIGHT AND CHRISTMAS DAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 70s. .THURSDAY NIGHT...Clear. Lows in the lower 50s. .FRIDAY...Sunny. Highs in the lower 70s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 70s. $$