Grantham, FL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grantham, FL in one place.
Sunny. High near 95, with temperatures falling to around 91 in the afternoon. Heat index values as high as 102. East northeast wind around 10 mph.
Local Weather Overview
This forecast page for Grantham, FL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 15, 2026 3:03 PM CDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Grantham, FL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 3:03 PM CDT
- Forecast office
- TAE
- Source
- NOAA / NWS
Daily Outlook
This Week in Grantham
This Afternoon looks like the warmest upcoming period in Grantham at 95 degrees F.
Thursday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Tonight at about 5 to 15 mph E.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 3:03 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- TAE
- Radar station
- KEVX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 73. East wind 5 to 15 mph. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 91. East northeast wind around 15 mph, with gusts as high as 25 mph.
Clear, with a low around 68. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 88. Northeast wind 10 to 15 mph.
Clear, with a low around 67.
Sunny, with a high near 90.
Mostly clear, with a low around 70.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 88. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
Showers and thunderstorms likely after 7am. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Sep 15
|
Sunny
|
95°F |
10 mph
ENE
|
|
Tonight
Sep 15
|
Mostly Clear
|
73°F |
5 to 15 mph
E
|
|
Wednesday
Sep 16
|
Sunny
|
91°F |
15 mph
ENE
|
|
Wednesday Night
Sep 16
|
Clear
|
68°F |
5 to 10 mph
ENE
|
|
Thursday
Sep 17
|
Sunny
|
88°F |
10 to 15 mph
NE
|
|
Thursday Night
Sep 17
|
Clear
|
67°F |
5 to 10 mph
NE
|
|
Friday
Sep 18
|
Sunny
|
90°F |
5 to 10 mph
ENE
|
|
Friday Night
Sep 18
|
Mostly Clear
|
70°F |
0 to 5 mph
NE
|
|
Saturday
Sep 19
|
Sunny then Chance Showers And Thunderstorms
|
88°F |
5 to 10 mph
E
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
0 to 5 mph
ESE
|
|
Sunday
Sep 20
|
Showers And Thunderstorms Likely
|
87°F |
5 to 10 mph
E
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
71°F |
0 to 5 mph
ESE
|
|
Monday
Sep 21
|
Showers And Thunderstorms Likely
|
87°F |
0 to 10 mph
ESE
|
|
Monday Night
Sep 21
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
71°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grantham.