Weather forecast for 10 daysDuck Key, FL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 82°F
- 79°F
Scattered Thunderstorms / Wind
- Precip. probability: 55%
- Precipitation: 0.94"
- Wind: 22mphNE 40°
- Humidity: 83%
- UV index: 6
- Sunrise: 7:23 am EDT
- Sunset: 6:54 pm EDT
- details ▼
Tomorrow, in Duck Key, scattered thunderstorms are expected, with gusty winds making conditions a bit rough.
Substantial precipitation is forecasted. A mild temperature range, peaking at a temperate 82.4°F and bottoming out at a moderately hot 78.8°F, is anticipated.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is assessed at a hot 91.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Expect temperatures to reach October's average high of 82.2°F.
Sunrise will be at 7:23 am and sunset at 6:54 pm; tomorrow's daylight will last for 11h and 31min.
Substantial precipitation is forecasted. A mild temperature range, peaking at a temperate 82.4°F and bottoming out at a moderately hot 78.8°F, is anticipated.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is assessed at a hot 91.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Expect temperatures to reach October's average high of 82.2°F.
Sunrise will be at 7:23 am and sunset at 6:54 pm; tomorrow's daylight will last for 11h and 31min.
10-day overview
Daily temperatures
Warmest period: Monday - Tuesday 84°C.
Coldest day: Sunday 25.10. 81°C.
Coldest day: Sunday 25.10. 81°C.
Chance of precipitation
Highest chance: today 83%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 77°F
Rain
- Precip. probability: 83%
- Precipitation: 0.08"
- Wind: 18mphNNE 21°
- Humidity: 89%
- UV index: 0
- Sunrise: 7:22 am EDT
- Sunset: 6:55 pm EDT
- details ▼
- Sunday
- Oct 18, 2026
- 82°F
- 79°F
Scattered Thunderstorms / Wind
- Precip. probability: 55%
- Precipitation: 0.94"
- Wind: 22mphNE 40°
- Humidity: 83%
- UV index: 6
- Sunrise: 7:23 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 84°F
- 77°F
Partly Cloudy / Wind
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 22mphNE 52°
- Humidity: 70%
- UV index: 9
- Sunrise: 7:23 am EDT
- Sunset: 6:53 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 84°F
- 75°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 19mphNE 42°
- Humidity: 71%
- UV index: 9
- Sunrise: 7:24 am EDT
- Sunset: 6:52 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 16mphNE 35°
- Humidity: 67%
- UV index: 8
- Sunrise: 7:24 am EDT
- Sunset: 6:51 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 14mphNNE 33°
- Humidity: 66%
- UV index: 8
- Sunrise: 7:25 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 14mphNE 36°
- Humidity: 67%
- UV index: 8
- Sunrise: 7:25 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 82°F
- 75°F
PM Showers
- Precip. probability: 38%
- Precipitation: 0.24"
- Wind: 16mphNNE 32°
- Humidity: 70%
- UV index: 8
- Sunrise: 7:26 am EDT
- Sunset: 6:49 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 75°F
Showers
- Precip. probability: 39%
- Precipitation: 0.35"
- Wind: 19mphNNE 32°
- Humidity: 75%
- UV index: 8
- Sunrise: 7:26 am EDT
- Sunset: 6:48 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 82°F
- 75°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 16mphNNE 21°
- Humidity: 72%
- UV index: 8
- Sunrise: 7:27 am EDT
- Sunset: 6:47 pm EDT
- details ▼
For the next ten days, a combination of dull, showery and stormy weather is predicted.
Rainfall is expected on Saturday, Sunday, next Saturday and Sunday.
The maximum temperature will be very similar during the next few days. Expected highs will hover between 80.6°F and 84.2°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.
The hottest days in Duck Key will be Monday and Tuesday, with a maximum of 84.2°F; the coldest day will be next Sunday, with a maximum of 80.6°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and vary between 84.2°F and a tropical 91.4°F.
Rainfall is expected on Saturday, Sunday, next Saturday and Sunday.
The maximum temperature will be very similar during the next few days. Expected highs will hover between 80.6°F and 84.2°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.
The hottest days in Duck Key will be Monday and Tuesday, with a maximum of 84.2°F; the coldest day will be next Sunday, with a maximum of 80.6°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and vary between 84.2°F and a tropical 91.4°F.
Updated: Oct 18, 2026 @ 03:20:54 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, scattered thunderstorms will bring intense winds and heavy rain at times.
Increased precipitation of 0.94" is predicted with a high probability.
Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which combines air temperature and relative humidity, is appraised at 91.4°F.
The highest temperature will be in line with the average maximum of 82.2°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
The highest temperature will be in line with the average maximum of 82.2°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
On Sunday, in Duck Key, sunrise will be at 7:23 am and sunset at 6:54 pm (EDT).
In Duck Key, the length of the day tomorrow will be 11h and 31min.





