Weather forecast for tomorrowLong Key, FL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 82°F
- 79°F
Scattered Thunderstorms / Wind
- Precip. probability: 56%
- Precipitation: 0.75"
- Wind: 23mphNE 39°
- Humidity: 83%
- UV index: 6
- Sunrise: 7:22 am EDT
- Sunset: 6:53 pm EDT
- details ▼
On Sunday, in Long Key, scattered thunderstorms will bring heavy rain, with winds picking up during the afternoon.
With a high probability, moderate precipitation is anticipated for tomorrow. The temperature is predicted to vary slightly from a high of a temperate 82.4°F to a low of a moderately hot 78.8°F.
The maximum heat index, which adjusts the air temperature based on humidity, is computed to be a blazing 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Sunrise will be at 7:22 am and sunset at 6:53 pm; tomorrow's daylight will last for 11h and 31min.
With a high probability, moderate precipitation is anticipated for tomorrow. The temperature is predicted to vary slightly from a high of a temperate 82.4°F to a low of a moderately hot 78.8°F.
The maximum heat index, which adjusts the air temperature based on humidity, is computed to be a blazing 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Sunrise will be at 7:22 am and sunset at 6:53 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: 13mphNNE 16°
- Humidity: 84%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 2 am
- 79°F
- Feels like:86°F
Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 17mphNNE 22°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
- 4 am
- 79°F
- Feels like:84°F
Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 17mphNNE 20°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
- 6 am
- 77°F
- Feels like:84°F
Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 17mphNNE 21°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunrise: 7:22 am
- 8 am
- 79°F
- Feels like:84°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 19mphNNE 24°
- Humidity: 89%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 am
- 81°F
- Feels like:88°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 19mphNE 36°
- Humidity: 85%
- Pressure: 30"Hg
- Visibility: 7mi
- UV index: 2
- details ▼
- 12 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 39%
- Precipitation: 0.08"
- Wind: 21mphNE 42°
- Humidity: 81%
- Pressure: 30"Hg
- Visibility: 7mi
- UV index: 5
- details ▼
- 2 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 41%
- Precipitation: 0.04"
- Wind: 21mphNE 50°
- Humidity: 80%
- Pressure: 29.97"Hg
- Visibility: 6mi
- UV index: 5
- details ▼
- 4 pm
- 82°F
- Feels like:90°F
Scattered Thunderstorms / Wind
- Precip. probability: 35%
- Precipitation: 0.08"
- Wind: 21mphNE 46°
- Humidity: 81%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 2
- details ▼
- 6 pm
- 81°F
- Feels like:88°F
Scattered Thunderstorms / Wind
- Precip. probability: 52%
- Precipitation: 0.04"
- Wind: 23mphNE 48°
- Humidity: 80%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunset: 6:53 pm
- 8 pm
- 81°F
- Feels like:86°F
Showers / Wind
- Precip. probability: 40%
- Precipitation: 0.04"
- Wind: 24mphNE 41°
- Humidity: 83%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 pm
- 81°F
- Feels like:86°F
Scattered Thunderstorms / Wind
- Precip. probability: 57%
- Precipitation: 0.16"
- Wind: 22mphNE 42°
- Humidity: 82%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, a combination of thunderstorm-prone, showery and cloudy weather is anticipated.
Rainfall is forecasted at 12 am, 1 am, 9 am, and from 11 am to 11 pm. With moderate precipitation of 0.16", most rainfall is expected at 10 pm.
The temperature variation will be indistinguishable, with a minimum of 77°F and a maximum of 82.4°F. The feels-like temperature difference throughout the day 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.
Rainfall is forecasted at 12 am, 1 am, 9 am, and from 11 am to 11 pm. With moderate precipitation of 0.16", most rainfall is expected at 10 pm.
The temperature variation will be indistinguishable, with a minimum of 77°F and a maximum of 82.4°F. The feels-like temperature difference throughout the day 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.
Updated: Oct 18, 2026 @ 02:11:10 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 are expected, bringing strong winds along with possible hail.
Moderate precipitation of 0.75" is forecasted in Long Key. The likelihood of rainfall is 56%.
Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at 91.4°F.
On Sunday, in Long Key, sunrise will be at 7:22 am and sunset at 6:53 pm (EDT).
Tomorrow, the daylight will last for 11h and 31min.
