Weather forecast for tomorrowOld Marco Junction, FL

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 88°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 17mphNE 44°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
Tomorrow, sunshine will dominate, with only occasional cloud cover.
The forecasted temperature range extends from a high of a humid 87.8°F to a low of a comfortable 66.2°F.
The maximum heat index, which measures the combined effect of heat and moisture, is assessed at a sizzling 96.8°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 highest temperature is predicted to be a couple of degrees higher than the standard October average of 83.5°F.
Sunrise will be at 7:27 am and sunset at 6:55 pm; tomorrow's daylight will last for 11h and 28min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 90°C.
Coldest hour: 6 am 73°C.

Chance of precipitation

Highest chance: 6 am 6%.

Hourly weather forecast

  • 12 am
  • 75°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 12mphNE 39°
  • Humidity: 78%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 73°F
  • Feels like:
    75°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphNNE 33°
  • Humidity: 81%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 72°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 10mphNNE 30°
  • Humidity: 85%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 72°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 10mphNNE 27°
  • Humidity: 87%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:27 am
  • 8 am
  • 72°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 10mphNNE 27°
  • Humidity: 86%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 79°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 13mphNE 42°
  • Humidity: 71%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 15mphNE 53°
  • Humidity: 59%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 2 pm
  • 86°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphNE 53°
  • Humidity: 54%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 8
  • ▼
  • 4 pm
  • 86°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphNE 50°
  • Humidity: 55%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 6 pm
  • 82°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNE 49°
  • Humidity: 59%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:55 pm
  • 8 pm
  • 77°F
  • Feels like:
    81°F
Clear
Clear
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 11mphNE 47°
  • Humidity: 69%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 75°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphNE 37°
  • Humidity: 77%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of cloud-filled and dry and sunny weather is predicted.
The temperature will vary between the lowest temperature of 71.6°F and the highest temperature of 86°F. The hottest part of the day will be from 2 pm to 4 pm.
The highest temperature will be moderately higher than October's average maximum of 83.5°F. Forecast models suggest a low more consistent with November's typical minimum of 67.8°F than October's usual 74.1°F.
Updated: Oct 18, 2026 @ 10:37:37 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, sun-filled skies will remain for most of the day.

Tomorrow, the highest temperature will be 87.8°F, while the lowest temperature will be 66.2°F. The maximum heat index, which integrates air moisture with ambient temperature, is appraised at 96.8°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 83.5°F in October. The lowest temperature will be also moderately lower than the average low of 74.1°F.

On Monday, in Old Marco Junction, sunrise will be at 7:27 am and sunset at 6:55 pm (EDT).

In Old Marco Junction, tomorrow, there will be 11h and 28min of daylight.