Grand Island, FL Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Island, FL in one place.
A slight chance of rain showers between 8am and 10am. Mostly sunny. High near 90, with temperatures falling to around 85 in the afternoon. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Grand Island, 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 4:03 PM EDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Grand Island, FL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 4:03 PM EDT
- Forecast office
- MLB
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Island
Wednesday looks like the warmest upcoming period in Grand Island at 90 degrees F.
Thursday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph NE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 4:03 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- MLB
- Radar station
- KMLB
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 72. Northeast wind 5 to 15 mph, with gusts as high as 30 mph.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 89. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 71. Northeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Showers and thunderstorms likely after 2pm. Sunny, with a high near 90. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 71. East northeast wind 0 to 5 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 90. East wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 72. East wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 90. Southeast wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 72. Southeast wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely after 8am. Mostly sunny, with a high near 89. South southeast wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 72. Southeast wind 0 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Slight Chance Rain Showers then Mostly Sunny
|
90°F |
10 to 15 mph
NE
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
72°F |
5 to 15 mph
NE
|
|
Thursday
Sep 17
|
Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
5 to 15 mph
NE
|
|
Thursday Night
Sep 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
5 to 10 mph
NE
|
|
Friday
Sep 18
|
Sunny then Showers And Thunderstorms Likely
|
90°F |
5 to 10 mph
NE
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms Likely then Partly Cloudy
|
71°F |
0 to 5 mph
ENE
|
|
Saturday
Sep 19
|
Mostly Sunny then Showers And Thunderstorms Likely
|
90°F |
0 to 5 mph
E
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms Likely
|
72°F |
0 to 5 mph
E
|
|
Sunday
Sep 20
|
Mostly Sunny then Showers And Thunderstorms Likely
|
90°F |
0 to 5 mph
SE
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely
|
72°F |
0 to 5 mph
SE
|
|
Monday
Sep 21
|
Showers And Thunderstorms Likely
|
89°F |
0 to 5 mph
SSE
|
|
Monday Night
Sep 21
|
Showers And Thunderstorms Likely
|
72°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Island.