Weather forecast for tomorrowFleming Key, FL

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 84°F
  • 79°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 44%
  • Precipitation: 0.2"
  • Wind: 21mphNE 49°
  • Humidity: 81%
  • UV index: 7
  • Sunrise: 7:26 am EDT
  • Sunset: 6:57 pm EDT
  • ▼
Tomorrow, in Fleming Key, scattered thunderstorms will develop, with winds expected to increase as the storm system moves in.
The likelihood of rain is low, and light precipitation is anticipated. Temperatures will exhibit minor fluctuations, extending from a high of a warm 84.2°F to a low of a temperate 78.8°F.
The maximum heat index, which factors the actual air temperature with the relative humidity, is estimated at a torrid 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.
Sunrise will be at 7:26 am and sunset at 6:57 pm; tomorrow's daylight will last for 11h and 31min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 91°C.
Coldest period: 12 am - 6 am 86°C.

Chance of precipitation

Highest chance: 12 am 22%.

Hourly weather forecast

  • 12 am
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 21mphNE 47°
  • Humidity: 80%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 21mphNE 45°
  • Humidity: 80%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 21mphNE 47°
  • Humidity: 81%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 21mphNE 49°
  • Humidity: 79%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:26 am
  • 8 am
  • 81°F
  • Feels like:
    86°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 20mphNE 51°
  • Humidity: 81%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    88°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 20mphNE 53°
  • Humidity: 75%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 21mphENE 57°
  • Humidity: 70%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    91°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 20mphENE 61°
  • Humidity: 69%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 4 pm
  • 84°F
  • Feels like:
    91°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 20mphENE 62°
  • Humidity: 67%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 6 pm
  • 84°F
  • Feels like:
    90°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 19mphENE 61°
  • Humidity: 66%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:57 pm
  • 8 pm
  • 82°F
  • Feels like:
    88°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 19mphENE 60°
  • Humidity: 70%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 81°F
  • Feels like:
    88°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 20mphNE 54°
  • Humidity: 72%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, weather will be unstable, and a combination of primarily overcast and occasionally storm-filled, rain-filled and sun-filled weather is expected.
The temperature variation will be indistinguishable, with a minimum of 80.6°F and a maximum of 84.2°F. The feels-like temperature variation will be indistinguishable, with the lowest temperature of 86°F and the highest temperature of 91.4°F. The hottest part of the day will be from 1 pm to 6 pm.
Updated: Oct 18, 2026 @ 03:09:56 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, scattered thunderstorms are forecasted, and winds will pick up as the storm system moves through.

Light precipitation of 0.2" is predicted. The likelihood of rainfall is 44%.

Tomorrow, the maximum temperature will be 84.2°F, while the minimum temperature will be 78.8°F. The maximum heat index, which reflects the perceived temperature due to humidity levels, is calculated to be 95°F.

On Sunday, in Fleming Key, sunrise will be at 7:26 am and sunset at 6:57 pm (EDT).

In Fleming Key, tomorrow, there will be 11h and 31min of daylight.