Nassau County, FL Weather Forecast
County weather hub
Mostly Sunny then Chance Showers And Thunderstorms
Compare major city weather across Nassau County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 40%.
County Weather Overview
This county weather page brings together forecast coverage for Nassau County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Nassau County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 18 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 4:46 AM EDT
- Forecast office
- JAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Nassau County
Tuesday looks like the warmest upcoming period in Nassau County at 96 degrees F.
Saturday Night is the coolest period ahead with temperatures near 75 degrees F.
The strongest winds are forecast for Sunday at about 8 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 4:46 AM EDT
- Coverage
- 4 days
- Time zone
- America/New_York
- Forecast office
- JAX
- Radar station
- KJAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 95. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 96.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
94°F |
2 to 7 mph
SW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
75°F |
3 to 7 mph
SW
|
|
Sunday
Jul 19
|
Chance Showers And Thunderstorms
|
93°F |
8 mph
SW
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms
|
76°F |
3 to 7 mph
SW
|
|
Monday
Jul 20
|
Chance Showers And Thunderstorms
|
95°F |
7 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
77°F |
2 to 6 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms
|
96°F |
3 to 7 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Nassau County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Nassau County.
Largest mapped city population in this region: 13,290.
