Big Coppitt Key, FL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Big Coppitt Key, FL in one place.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 91. East wind 5 to 10 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Big Coppitt Key, 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: Jul 14, 2026 7:19 PM EDT.
The active forecast window currently covers Jul 16 to Jul 20, 2026 for Big Coppitt Key, FL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 16 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 7:19 PM EDT
- Forecast office
- KEY
- Source
- NOAA / NWS
Daily Outlook
This Week in Big Coppitt Key
Thursday looks like the warmest upcoming period in Big Coppitt Key at 91 degrees F.
Thursday Night is the coolest period ahead with temperatures near 83 degrees F.
The strongest winds are forecast for Thursday at about 5 to 10 mph E.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 7:19 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- KEY
- Radar station
- KBYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 91.
A slight chance of rain showers after 8pm. Partly cloudy, with a low around 84.
A slight chance of rain showers before 8am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83. Chance of precipitation is 20%.
Mostly sunny, with a high near 90.
Partly cloudy, with a low around 84.
Sunny, with a high near 90.
A slight chance of rain showers after 8pm. Mostly clear, with a low around 84.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Slight Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
E
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms
|
83°F |
5 mph
E
|
|
Friday
Jul 17
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
91°F |
5 mph
E
|
|
Friday Night
Jul 17
|
Slight Chance Rain Showers
|
84°F |
5 mph
E
|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms
|
90°F |
5 mph
E
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
83°F |
5 to 10 mph
SE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
90°F |
5 to 10 mph
S
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
84°F |
5 mph
SE
|
|
Monday
Jul 20
|
Sunny
|
90°F |
5 mph
S
|
|
Monday Night
Jul 20
|
Slight Chance Rain Showers
|
84°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Big Coppitt Key.