Weather forecast for tomorrowSullivan, IN

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 152°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 8:02 am EDT
  • Sunset: 7:06 pm EDT
  • ▼
Tomorrow, on Sunday, conditions remain stable and sunny, with little cloud presence.
A considerable disparity in temperature is expected, reaching up to a maximum of a breezy 66.2°F and falling to a minimum of a cold 35.6°F.
The high temperature is predicted to match October's standard maximum of 65.1°F.
Sunrise will be at 8:02 am and sunset at 7:06 pm; tomorrow's daylight will last for 11h and 4min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 6 pm 63°C.
Coldest hour: 6 am 36°C.

Chance of precipitation

Highest chance: 6 am - 9 am 4%.

Hourly weather forecast

  • 12 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphE 99°
  • Humidity: 81%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphESE 109°
  • Humidity: 89%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphESE 118°
  • Humidity: 92%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 36°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphSE 126°
  • Humidity: 92%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 am
  • 36°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 2mphSE 133°
  • Humidity: 93%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 8:02 am
  • 10 am
  • 46°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphSSE 146°
  • Humidity: 73%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 166°
  • Humidity: 50%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 162°
  • Humidity: 40%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 160°
  • Humidity: 35%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSSE 149°
  • Humidity: 38%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 7:06 pm
  • 8 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSE 132°
  • Humidity: 62%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSE 125°
  • Humidity: 77%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, mostly cloudless and sunny weather is anticipated.
The temperature will be between a minimum of 35.6°F and a maximum of 64.4°F. The warmest part of the day will be at 4 pm and 5 pm.
The high temperature is expected to be in line with October's usual value of 65.1°F. Tomorrow, the overnight low is more resembling November's usual minimum of 37.2°F than October's 48.4°F.
Updated: Oct 17, 2026 @ 23:45:42 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, clear and sunny conditions are expected.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 35.6°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be notably lower than the average low of 48.4°F.

On Sunday, in Sullivan, sunrise will be at 8:02 am and sunset at 7:06 pm (EDT).

In Sullivan, tomorrow, there will be 11h and 4min of daylight.