Saint Johns County, FL Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Saint Johns County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms likely after 8am. Partly sunny, with a high near 90. Chance of precipitation is 70%.
County Weather Overview
This county weather page brings together forecast coverage for Saint Johns County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Saint Johns County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 29 to May 30, 2026
- Latest sync
- May 24, 2026 4:39 AM EDT
- Forecast office
- JAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Johns County
Friday looks like the warmest upcoming period in Saint Johns County at 90 degrees F.
Friday Night is the coolest period ahead with temperatures near 74 degrees F.
The strongest winds are forecast for Saturday at about 6 to 10 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 4:39 AM EDT
- Coverage
- 2 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
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 70%.
A chance of rain showers before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 29
|
Showers And Thunderstorms Likely
|
90°F |
3 to 8 mph
SW
|
|
Friday Night
May 29
|
Showers And Thunderstorms Likely
|
74°F |
3 to 7 mph
SW
|
|
Saturday
May 30
|
Showers And Thunderstorms
|
88°F |
6 to 10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Saint Johns County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Saint Johns County.
Largest mapped city population in this region: 20,019.
