Weather forecast for tomorrowSunrise Key, FL

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 81°F
  • 77°F
Thunderstorms
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
  • ▼
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.

Hourly overview

Hourly temperatures

Warmest period: 12 pm - 6 pm 84°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
Thunderstorms
  • Precip. probability: 71%
  • Precipitation: 0.08"
  • Wind: 11mphN 6°
  • Humidity: 91%
  • Pressure: 30"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
  • 2 am
  • 75°F
  • Feels like:
    81°F
Thunderstorms
Thunderstorms
  • Precip. probability: 65%
  • Precipitation: 0.16"
  • Wind: 13mphN 11°
  • Humidity: 91%
  • Pressure: 29.97"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
  • 4 am
  • 75°F
  • Feels like:
    81°F
Thunderstorms
Thunderstorms
  • Precip. probability: 65%
  • Precipitation: 0.08"
  • Wind: 15mphNNE 15°
  • Humidity: 89%
  • Pressure: 29.97"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
  • 6 am
  • 77°F
  • Feels like:
    81°F
Thunderstorms
Thunderstorms
  • Precip. probability: 67%
  • Precipitation: 0.24"
  • Wind: 15mphNNE 28°
  • Humidity: 88%
  • Pressure: 29.97"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
Sunrise: 7:21 am
  • 8 am
  • 77°F
  • Feels like:
    82°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • Wind: 16mphNE 34°
  • Humidity: 83%
  • Pressure: 30"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 10 am
  • 79°F
  • Feels like:
    84°F
Thunderstorms
Thunderstorms
  • Precip. probability: 75%
  • Precipitation: 0.08"
  • Wind: 17mphNE 39°
  • Humidity: 78%
  • Pressure: 30.03"Hg
  • Visibility: 6mi
  • UV index: 1
  • ▼
  • 12 pm
  • 81°F
  • Feels like:
    84°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 49%
  • Precipitation: 0.2"
  • Wind: 20mphNE 46°
  • Humidity: 77%
  • Pressure: 30.03"Hg
  • Visibility: 7mi
  • UV index: 3
  • ▼
  • 2 pm
  • 81°F
  • Feels like:
    84°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 55%
  • Precipitation: 0.04"
  • Wind: 19mphNE 49°
  • Humidity: 78%
  • Pressure: 30"Hg
  • Visibility: 7mi
  • UV index: 3
  • ▼
  • 4 pm
  • 79°F
  • Feels like:
    84°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 33%
  • Precipitation: 0.04"
  • Wind: 19mphNE 42°
  • Humidity: 75%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 1
  • ▼
  • 6 pm
  • 79°F
  • Feels like:
    84°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 19mphNE 36°
  • Humidity: 74%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
Sunset: 6:49 pm
  • 8 pm
  • 79°F
  • Feels like:
    82°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 18mphNE 40°
  • Humidity: 72%
  • Pressure: 30"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 10 pm
  • 79°F
  • Feels like:
    82°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 18mphNE 41°
  • Humidity: 73%
  • Pressure: 30.03"Hg
  • Visibility: 8mi
  • UV index: 0
  • ▼
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.
Updated: Oct 17, 2026 @ 19:10:08 UTC
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.

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.