Weather forecast for tomorrowBig Pine Key, FL

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 86°F
  • 77°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 20%
  • Precipitation: 0.79"
  • Wind: 21mphNE 54°
  • Humidity: 68%
  • UV index: 8
  • Sunrise: 7:25 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
On Monday, October 19, variable cloud cover with steady winds is also anticipated.
With a low probability, moderate precipitation is forecasted for tomorrow. Temperature shifts will be modest, ranging from a peak of a blazing 86°F to a low of a temperate 77°F.
The maximum heat index, which combines relative humidity and air temperature, is calculated to be a sizzling 95°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The day’s top temperature is expected to be a few degrees higher than the typical October high of 82.2°F.
Sunrise will be at 7:25 am and sunset at 6:55 pm; tomorrow's daylight will last for 11h and 30min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 91°C.
Coldest period: 3 am - 6 am 84°C.

Chance of precipitation

Highest chance: 3 am 73%.

Hourly weather forecast

  • 12 am
  • 81°F
  • Feels like:
    86°F
Showers / Wind
Showers / Wind
  • Precip. probability: 56%
  • Precipitation: 0.04"
  • Wind: 20mphNE 43°
  • Humidity: 79%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 2 am
  • 79°F
  • Feels like:
    84°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 55%
  • Precipitation: 0.2"
  • Wind: 19mphNE 43°
  • Humidity: 80%
  • Pressure: 29.97"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 4 am
  • 79°F
  • Feels like:
    84°F
Showers
Showers
  • Precip. probability: 37%
  • Precipitation: 0.08"
  • Wind: 19mphNE 44°
  • Humidity: 80%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 6 am
  • 79°F
  • Feels like:
    84°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 17mphNE 44°
  • Humidity: 80%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:25 am
  • 8 am
  • 79°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 18mphNE 46°
  • Humidity: 78%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 19mphNE 50°
  • Humidity: 73%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 84°F
  • Feels like:
    90°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 21mphNE 56°
  • Humidity: 67%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    91°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 19mphENE 60°
  • Humidity: 64%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 4 pm
  • 86°F
  • Feels like:
    91°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 19mphENE 61°
  • Humidity: 62%
  • 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 58°
  • Humidity: 63%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:55 pm
  • 8 pm
  • 82°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 19mphNE 55°
  • Humidity: 68%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 81°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 17mphNE 49°
  • Humidity: 73%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, weather will be unstable, and a mix of dull, stormy, showery and mostly clear weather is predicted.
Rainfall is anticipated from 12 am to 4 am. With moderate precipitation of 0.2", most rainfall is expected at 2 am.
The temperature will be between a minimum of 78.8°F and a maximum of 86°F. The hottest part of the day will be at 3 pm and 4 pm.
The highest temperature will be slightly warmer than October's average maximum of 82.2°F. The night temperature will be also resembling the standard October low of 79.3°F.
Updated: Oct 18, 2026 @ 05:31:53 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, partly cloudy conditions with persistent winds will remain in place.

Moderate precipitation of 0.79" is predicted. The likelihood of rainfall is low at 20%.

Tomorrow, the highest temperature will be 86°F, while the lowest temperature will be 77°F. The maximum heat index, which combines air temperature and relative humidity, is calculated to be 95°F.
The highest temperature will be relatively higher than the average maximum of 82.2°F in October. The lowest temperature will be in line with the average low of 79.3°F.

On Monday, in Big Pine Key, sunrise will be at 7:25 am and sunset at 6:55 pm (EDT).

In Big Pine Key, tomorrow, there will be 11h and 30min of daylight.