Weather forecast for tomorrowSunrise Key, FL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 81°F
- 77°F
Thunderstorms
- Precip. probability: 74%
- Precipitation: 0.63"
- Wind: 20mphNE 40°
- Humidity: 78%
- UV index: 4
- Sunrise: 7:21 am EDT
- Sunset: 6:49 pm EDT
- details ▼
Tomorrow, on Sunday, October 18, unstable skies bring the chance of thunderstorms.
The chance of rainfall is high, and precipitation will be moderate. The peak daytime temperature will reach a moderately hot 80.6°F, while the nighttime temperature will drop to a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is computed to be a hot 86°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Tomorrow, the expected high will correspond with the regular October temperature of 82.6°F.
Sunrise will be at 7:21 am and sunset at 6:49 pm; tomorrow's daylight will last for 11h and 29min.
The chance of rainfall is high, and precipitation will be moderate. The peak daytime temperature will reach a moderately hot 80.6°F, while the nighttime temperature will drop to a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is computed to be a hot 86°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Tomorrow, the expected high will correspond with the regular October temperature of 82.6°F.
Sunrise will be at 7:21 am and sunset at 6:49 pm; tomorrow's daylight will last for 11h and 29min.
Hourly overview
Hourly temperatures
Warmest period: 12 pm - 6 pm 84°C.
Coldest period: 3 am - 6 am 81°C.
Coldest period: 3 am - 6 am 81°C.
Chance of precipitation
Highest chance: 12 am 71%.
Hourly weather forecast
- 12 am
- 77°F
- Feels like:82°F
Thunderstorms
- Precip. probability: 71%
- Precipitation: 0.08"
- Wind: 11mphN 6°
- Humidity: 91%
- Pressure: 30"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
- 2 am
- 75°F
- Feels like:81°F
Thunderstorms
- Precip. probability: 65%
- Precipitation: 0.16"
- Wind: 13mphN 11°
- Humidity: 91%
- Pressure: 29.97"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
- 4 am
- 75°F
- Feels like:81°F
Thunderstorms
- Precip. probability: 65%
- Precipitation: 0.08"
- Wind: 15mphNNE 15°
- Humidity: 89%
- Pressure: 29.97"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
- 6 am
- 77°F
- Feels like:81°F
Thunderstorms
- Precip. probability: 67%
- Precipitation: 0.24"
- Wind: 15mphNNE 28°
- Humidity: 88%
- Pressure: 29.97"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
Sunrise: 7:21 am
- 8 am
- 77°F
- Feels like:82°F
Scattered Thunderstorms
- Precip. probability: 41%
- Precipitation: 0.04"
- Wind: 16mphNE 34°
- Humidity: 83%
- Pressure: 30"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 am
- 79°F
- Feels like:84°F
Thunderstorms
- Precip. probability: 75%
- Precipitation: 0.08"
- Wind: 17mphNE 39°
- Humidity: 78%
- Pressure: 30.03"Hg
- Visibility: 6mi
- UV index: 1
- details ▼
- 12 pm
- 81°F
- Feels like:84°F
Scattered Thunderstorms / Wind
- Precip. probability: 49%
- Precipitation: 0.2"
- Wind: 20mphNE 46°
- Humidity: 77%
- Pressure: 30.03"Hg
- Visibility: 7mi
- UV index: 3
- details ▼
- 2 pm
- 81°F
- Feels like:84°F
Scattered Thunderstorms
- Precip. probability: 55%
- Precipitation: 0.04"
- Wind: 19mphNE 49°
- Humidity: 78%
- Pressure: 30"Hg
- Visibility: 7mi
- UV index: 3
- details ▼
- 4 pm
- 79°F
- Feels like:84°F
Isolated Thunderstorms
- Precip. probability: 33%
- Precipitation: 0.04"
- Wind: 19mphNE 42°
- Humidity: 75%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 1
- details ▼
- 6 pm
- 79°F
- Feels like:84°F
Mostly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 19mphNE 36°
- Humidity: 74%
- Pressure: 29.97"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunset: 6:49 pm
- 8 pm
- 79°F
- Feels like:82°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 18mphNE 40°
- Humidity: 72%
- Pressure: 30"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 pm
- 79°F
- Feels like:82°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 18mphNE 41°
- Humidity: 73%
- Pressure: 30.03"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily stormy and occasionally dull weather is forecasted.
Rainfall is forecasted from 12 am to 4 pm. With moderate precipitation of 0.31", most rainfall is expected at 5 am.
The temperature difference will be unnoticeable, with the lowest temperature of 75.2°F and the highest temperature of 80.6°F. The warmest part of the day will be from noon to 3 pm.
Tomorrow, the high temperature will be similar to October's average. The lowest temperature tomorrow will be also comparable to October's average minimum.
Rainfall is forecasted from 12 am to 4 pm. With moderate precipitation of 0.31", most rainfall is expected at 5 am.
The temperature difference will be unnoticeable, with the lowest temperature of 75.2°F and the highest temperature of 80.6°F. The warmest part of the day will be from noon to 3 pm.
Tomorrow, the high temperature will be similar to October's average. The lowest temperature tomorrow will be also comparable to October's average minimum.
Updated: Oct 17, 2026 @ 19:10:08 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, in Sunrise Key, thunderstorms are expected.
With a probability of 74%, moderate precipitation of 0.63" is forecasted.
Tomorrow, the highest temperature will be 80.6°F, while the lowest temperature will be 77°F. The maximum heat index, which represents the influence of relative humidity on air temperature, is appraised at 86°F.
The maximum temperature will be in line with the average highest temperature of 82.6°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
The maximum temperature will be in line with the average highest temperature of 82.6°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
On Sunday, in Sunrise Key, sunrise will be at 7:21 am and sunset at 6:49 pm (EDT).
Tomorrow, the daylight will last for 11h and 29min.





