Weather forecast for 10 daysBig Pine Key, FL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 84°F
- 77°F
PM Thunderstorms
- Precip. probability: 43%
- Precipitation: 0.63"
- Wind: 20mphNE 45°
- Humidity: 79%
- UV index: 7
- Sunrise: 7:24 am EDT
- Sunset: 6:56 pm EDT
- details ▼
Tomorrow, in Big Pine Key, rain with scattered lightning is expected during the afternoon.
The likelihood of rainfall is low. However, anticipated precipitation will be moderate. Day and night temperatures will present a subtle variation, fluctuating between a moderately hot 84.2°F and a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is appraised at a fiery hot 95°F. Note that heat index values are valued for light wind and location in the shade. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The highest temperature is forecasted to reflect October's average of 82.2°F.
Sunrise will be at 7:24 am and sunset at 6:56 pm; tomorrow's daylight will last for 11h and 31min.
The likelihood of rainfall is low. However, anticipated precipitation will be moderate. Day and night temperatures will present a subtle variation, fluctuating between a moderately hot 84.2°F and a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is appraised at a fiery hot 95°F. Note that heat index values are valued for light wind and location in the shade. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The highest temperature is forecasted to reflect October's average of 82.2°F.
Sunrise will be at 7:24 am and sunset at 6:56 pm; tomorrow's daylight will last for 11h and 31min.
10-day overview
Daily temperatures
Warmest period: Monday - Tuesday 86°C.
Coldest period: Wednesday - Monday 82°C.
Coldest period: Wednesday - Monday 82°C.
Chance of precipitation
Highest chance: tomorrow 43%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 77°F
Isolated Thunderstorms
- Precip. probability: 32%
- Precipitation: 0.04"
- Wind: 17mphNNE 30°
- Humidity: 88%
- UV index: 0
- Sunrise: 7:24 am EDT
- Sunset: 6:56 pm EDT
- details ▼
- Sunday
- Oct 18, 2026
- 84°F
- 77°F
PM Thunderstorms
- Precip. probability: 43%
- Precipitation: 0.63"
- Wind: 20mphNE 45°
- Humidity: 79%
- UV index: 7
- Sunrise: 7:24 am EDT
- Sunset: 6:56 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 86°F
- 77°F
Partly Cloudy / Wind
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 21mphNE 55°
- Humidity: 68%
- UV index: 7
- Sunrise: 7:25 am EDT
- Sunset: 6:55 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 86°F
- 75°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 19mphNE 42°
- Humidity: 69%
- UV index: 9
- Sunrise: 7:25 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 82°F
- 77°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 16mphNE 36°
- Humidity: 66%
- UV index: 8
- Sunrise: 7:26 am EDT
- Sunset: 6:53 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 15mphNNE 32°
- Humidity: 64%
- UV index: 8
- Sunrise: 7:26 am EDT
- Sunset: 6:52 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 15mphNE 37°
- Humidity: 66%
- UV index: 8
- Sunrise: 7:27 am EDT
- Sunset: 6:51 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0.08"
- Wind: 17mphNNE 33°
- Humidity: 69%
- UV index: 8
- Sunrise: 7:28 am EDT
- Sunset: 6:51 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 82°F
- 75°F
Partly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 20mphNNE 32°
- Humidity: 73%
- UV index: 8
- Sunrise: 7:28 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 17mphNNE 23°
- Humidity: 71%
- UV index: 8
- Sunrise: 7:29 am EDT
- Sunset: 6:49 pm EDT
- details ▼
Models point to a combination of primarily gloomy and occasionally turbulent and sunny weather is forecasted.
Rainfall is predicted for Saturday, Sunday and next Saturday.
The variation in maximum temperature will be negligible in the coming days. Highs will range from 82.4°F to 86°F, while fluctuations in the night’s lowest temperature will be also minimal, as the overnight low will fall between 75.2°F and 77°F.
Monday and Tuesday, with the highest temperature of 86°F, will be the hottest days in Big Pine Key; the coldest days will be Wednesday through next Monday, with a maximum of 82.4°F.
Combining with the humidity, the maximum feel-like temperature may increase and vary between a tropical 86°F and a sweltering 95°F.
Rainfall is predicted for Saturday, Sunday and next Saturday.
The variation in maximum temperature will be negligible in the coming days. Highs will range from 82.4°F to 86°F, while fluctuations in the night’s lowest temperature will be also minimal, as the overnight low will fall between 75.2°F and 77°F.
Monday and Tuesday, with the highest temperature of 86°F, will be the hottest days in Big Pine Key; the coldest days will be Wednesday through next Monday, with a maximum of 82.4°F.
Combining with the humidity, the maximum feel-like temperature may increase and vary between a tropical 86°F and a sweltering 95°F.
Updated: Oct 18, 2026 @ 03:21:30 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, stormy weather with frequent thunder and rain bursts is expected.
Moderate precipitation of 0.63" is predicted. The chance of rainfall is 43%.
Tomorrow, the highest temperature will be 84.2°F, while the lowest temperature will be 77°F. The maximum heat index, which adjusts the air temperature based on humidity, is calculated to be 95°F.
The highest temperature will be in line with the average maximum of 82.2°F in October. The lowest temperature will be also in line with the average low of 79.3°F.
The highest temperature will be in line with the average maximum of 82.2°F in October. The lowest temperature will be also in line with the average low of 79.3°F.
On Sunday, in Big Pine Key, sunrise will be at 7:24 am and sunset at 6:56 pm (EDT).
Tomorrow, the daylight will last for 11h and 31min.





