Weather forecast for tomorrowDuck Key, FL

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 82°F
  • 79°F
Scattered Thunderstorms / Wind
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
  • ▼
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.

Hourly overview

Hourly temperatures

Warmest period: 12 pm - 3 pm 90°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
Showers
  • Precip. probability: 59%
  • Precipitation: 0.04"
  • Wind: 12mphNNE 17°
  • Humidity: 84%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 2 am
  • 79°F
  • Feels like:
    86°F
Cloudy
Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 17mphNNE 25°
  • Humidity: 90%
  • Pressure: 29.94"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 4 am
  • 79°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 18mphNNE 22°
  • Humidity: 90%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 6 am
  • 77°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 17mphNNE 23°
  • Humidity: 90%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
Sunrise: 7:23 am
  • 8 am
  • 79°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 19mphNNE 26°
  • Humidity: 90%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    88°F
Cloudy / Wind
Cloudy / Wind
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 20mphNE 37°
  • Humidity: 84%
  • Pressure: 30"Hg
  • Visibility: 8mi
  • UV index: 2
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    90°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • Wind: 21mphNE 42°
  • Humidity: 81%
  • Pressure: 30"Hg
  • Visibility: 7mi
  • UV index: 6
  • ▼
  • 2 pm
  • 82°F
  • Feels like:
    90°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 39%
  • Precipitation: 0.04"
  • Wind: 21mphNE 49°
  • Humidity: 80%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 5
  • ▼
  • 4 pm
  • 82°F
  • Feels like:
    90°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 39%
  • Precipitation: 0.12"
  • Wind: 21mphNE 48°
  • Humidity: 79%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 2
  • ▼
  • 6 pm
  • 81°F
  • Feels like:
    88°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 55%
  • Precipitation: 0.12"
  • Wind: 22mphNE 48°
  • Humidity: 80%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
Sunset: 6:54 pm
  • 8 pm
  • 81°F
  • Feels like:
    86°F
Showers / Wind
Showers / Wind
  • Precip. probability: 47%
  • Precipitation: 0.08"
  • Wind: 23mphNE 43°
  • Humidity: 84%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 10 pm
  • 81°F
  • Feels like:
    86°F
Showers / Wind
Showers / Wind
  • Precip. probability: 45%
  • Precipitation: 0.12"
  • Wind: 22mphNE 42°
  • Humidity: 82%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
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.
Updated: Oct 18, 2026 @ 02:13:52 UTC
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.

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.