Weather forecast for tomorrowDuck Key, FL
Weather forecast for tomorrow
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 it feel colder.
Increased precipitation is predicted. A slight fluctuation in temperature is anticipated, achieving a maximum of a moderately hot 82.4°F and dipping to a minimum of a warm 78.8°F.
The maximum heat index, which measures the combined effect of heat and moisture, is calculated to be a hot 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow's temperature is anticipated to match October's standard peak 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.
Increased precipitation is predicted. A slight fluctuation in temperature is anticipated, achieving a maximum of a moderately hot 82.4°F and dipping to a minimum of a warm 78.8°F.
The maximum heat index, which measures the combined effect of heat and moisture, is calculated to be a hot 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow's temperature is anticipated to match October's standard peak 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.
Hourly overview
Hourly temperatures
Warmest period: 12 pm - 3 pm 90°C.
Coldest period: 3 am - 6 am 84°C.
Coldest period: 3 am - 6 am 84°C.
Chance of precipitation
Highest chance: 12 am 59%.
Hourly weather forecast
- 12 am
- 81°F
- Feels like:88°F
Showers
- Precip. probability: 59%
- Precipitation: 0.04"
- Wind: 12mphNNE 17°
- Humidity: 84%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 2 am
- 79°F
- Feels like:86°F
Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 17mphNNE 25°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 4 am
- 79°F
- Feels like:84°F
Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 18mphNNE 22°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 6 am
- 77°F
- Feels like:84°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 17mphNNE 23°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunrise: 7:23 am
- 8 am
- 79°F
- Feels like:84°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 19mphNNE 26°
- Humidity: 90%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 am
- 81°F
- Feels like:88°F
Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 20mphNE 37°
- Humidity: 84%
- Pressure: 30"Hg
- Visibility: 8mi
- UV index: 2
- details ▼
- 12 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 35%
- Precipitation: 0.04"
- Wind: 21mphNE 42°
- Humidity: 81%
- Pressure: 30"Hg
- Visibility: 7mi
- UV index: 6
- details ▼
- 2 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 39%
- Precipitation: 0.04"
- Wind: 21mphNE 49°
- Humidity: 80%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 5
- details ▼
- 4 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 39%
- Precipitation: 0.12"
- Wind: 21mphNE 48°
- Humidity: 79%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 2
- details ▼
- 6 pm
- 81°F
- Feels like:88°F
Scattered Thunderstorms / Wind
- Precip. probability: 55%
- Precipitation: 0.12"
- Wind: 22mphNE 48°
- Humidity: 80%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunset: 6:54 pm
- 8 pm
- 81°F
- Feels like:86°F
Showers / Wind
- Precip. probability: 47%
- Precipitation: 0.08"
- Wind: 23mphNE 43°
- Humidity: 84%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 pm
- 81°F
- Feels like:86°F
Showers / Wind
- Precip. probability: 45%
- Precipitation: 0.12"
- Wind: 22mphNE 42°
- Humidity: 82%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, a combination of cloudy, storm-filled and rain-filled weather is forecasted.
Rainfall is expected at 12 am, 1 am, and from 11 am to 11 pm. With moderate precipitation of 0.31", most rainfall is expected at 11 pm.
The temperature variation throughout the day will be unnoticeable, with a minimum of 77°F and a maximum of 82.4°F. The feels-like temperature difference will be indistinguishable, with the lowest temperature of 84.2°F and the highest temperature of 89.6°F. The warmest part of the day will be from noon to 5 pm.
The maximum temperature will be consistent with October's average highest temperature of 82.2°F. The temperature low is forecasted to be also comparable to the usual October value of 79.3°F.
Rainfall is expected at 12 am, 1 am, and from 11 am to 11 pm. With moderate precipitation of 0.31", most rainfall is expected at 11 pm.
The temperature variation throughout the day will be unnoticeable, with a minimum of 77°F and a maximum of 82.4°F. The feels-like temperature difference will be indistinguishable, with the lowest temperature of 84.2°F and the highest temperature of 89.6°F. The warmest part of the day will be from noon to 5 pm.
The maximum temperature will be consistent with October's average highest temperature of 82.2°F. The temperature low is forecasted to be also comparable to the usual October value of 79.3°F.
Updated: Oct 18, 2026 @ 02:13:52 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 occur, and the winds will be noticeably stronger as well.
Yes. With a probability of 55%, substantial precipitation of 0.94" is forecasted.
Tomorrow, the highest temperature will be 82.4°F, while the lowest temperature will be 78.8°F. The maximum heat index, which reflects the perceived temperature due to humidity levels, is estimated at 91.4°F.
The maximum temperature tomorrow will be in line with the average highest temperature in October. The lowest temperature will be also in line with the average low of 79.3°F.
The maximum temperature tomorrow will be in line with the average highest temperature in October. The lowest temperature will be also in line with the average low of 79.3°F.
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.





