Weather forecast for 10 daysBig Coppitt Key, FL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 84°F
- 79°F
Scattered Thunderstorms / Wind
- Precip. probability: 36%
- Precipitation: 0.2"
- Wind: 21mphNE 48°
- Humidity: 80%
- UV index: 6
- Sunrise: 7:26 am EDT
- Sunset: 6:57 pm EDT
- details ▼
Today, in Big Coppitt Key, scattered thunderstorms will bring gusty winds and possible lightning.
The likelihood of rain is low, and light precipitation is predicted. Temperature shifts will be minor, ranging from a high of a moderately hot 84.2°F to a low of a temperate 78.8°F.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is evaluated at a sweltering 95°F. Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Forecasts show that today the temperature will align with October's standard maximum of 82°F.
Sunrise will be at 7:26 am and sunset at 6:57 pm; the daylight will last for 11h and 31min.
The likelihood of rain is low, and light precipitation is predicted. Temperature shifts will be minor, ranging from a high of a moderately hot 84.2°F to a low of a temperate 78.8°F.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is evaluated at a sweltering 95°F. Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Forecasts show that today the temperature will align with October's standard maximum of 82°F.
Sunrise will be at 7:26 am and sunset at 6:57 pm; the daylight will last for 11h and 31min.
10-day overview
Daily temperatures
Warmest day: tomorrow 86°C.
Coldest period: Wednesday - Tuesday 82°C.
Coldest period: Wednesday - Tuesday 82°C.
Chance of precipitation
Highest chance: today 36%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 84°F
- 79°F
Scattered Thunderstorms / Wind
- Precip. probability: 36%
- Precipitation: 0.2"
- Wind: 21mphNE 48°
- Humidity: 80%
- UV index: 6
- Sunrise: 7:26 am EDT
- Sunset: 6:57 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 86°F
- 77°F
Partly Cloudy / Wind
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 22mphENE 59°
- Humidity: 69%
- UV index: 8
- Sunrise: 7:26 am EDT
- Sunset: 6:56 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 84°F
- 75°F
Mostly Sunny / Wind
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 21mphNE 44°
- Humidity: 68%
- UV index: 9
- Sunrise: 7:27 am EDT
- Sunset: 6:55 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 82°F
- 77°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 16mphNNE 32°
- Humidity: 64%
- UV index: 9
- Sunrise: 7:27 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 82°F
- 77°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 14mphNE 38°
- Humidity: 64%
- UV index: 8
- Sunrise: 7:28 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 82°F
- 75°F
AM Showers
- Precip. probability: 31%
- Precipitation: 0.04"
- Wind: 16mphNE 44°
- Humidity: 67%
- UV index: 8
- Sunrise: 7:28 am EDT
- Sunset: 6:53 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 82°F
- 75°F
PM Showers
- Precip. probability: 34%
- Precipitation: 0.2"
- Wind: 19mphNE 34°
- Humidity: 67%
- UV index: 8
- Sunrise: 7:29 am EDT
- Sunset: 6:52 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 82°F
- 75°F
Partly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 22mphNE 34°
- Humidity: 70%
- UV index: 8
- Sunrise: 7:29 am EDT
- Sunset: 6:51 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 82°F
- 75°F
Partly Cloudy / Wind
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 21mphNNE 24°
- Humidity: 68%
- UV index: 8
- Sunrise: 7:30 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 82°F
- 77°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 17mphNNE 22°
- Humidity: 68%
- UV index: 8
- Sunrise: 7:30 am EDT
- Sunset: 6:50 pm EDT
- details ▼
Weather fluctuations are likely over the next ten days, and a mix of overcast, rainy, storm-filled and bright weather is forecasted.
Rain is predicted for Sunday, Friday and Saturday. The days with the most rainfall will be Sunday and Saturday, with light precipitation of 0.2".
The high temperatures are expected to remain largely stable in the coming days. Highs will range from 82.4°F to 86°F, while changes in the overnight low will be also barely noticeable, as the overnight low will fall between 75.2°F and 78.8°F.
With the highest temperature of 86°F, Monday will be the hottest day; for the majority of the other days, the maximum temperature will remain steady at 82.4°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between a hot 86°F and a very hot 95°F.
Rain is predicted for Sunday, Friday and Saturday. The days with the most rainfall will be Sunday and Saturday, with light precipitation of 0.2".
The high temperatures are expected to remain largely stable in the coming days. Highs will range from 82.4°F to 86°F, while changes in the overnight low will be also barely noticeable, as the overnight low will fall between 75.2°F and 78.8°F.
With the highest temperature of 86°F, Monday will be the hottest day; for the majority of the other days, the maximum temperature will remain steady at 82.4°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between a hot 86°F and a very hot 95°F.
Updated: Oct 18, 2026 @ 08:07:44 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
On Sunday, scattered thunderstorms will bring intense winds and heavy rain at times.
Light precipitation of 0.2" is anticipated. The chance of rainfall is 36%.
Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 78.8°F. The maximum heat index, which modifies the air temperature to account for humidity, is appraised at 95°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
On Sunday, in Big Coppitt Key, sunrise will be at 7:26 am and sunset at 6:57 pm (EDT).
Today, the daylight will last for 11h and 31min.





