My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      River Flood Warning
      until 12:30 AM EDT
      +2 more alerts
      Elev 489 ft, 39.043 °N 87.374 °W

      Sullivan, IN

      Sullivan Station
      Updated: 12:33 PM EDT on August 21, 2026 (GMT -4)
      just now
      86°
      64°
      84
      Feels Like 87
      Fair
      N
      3
      Similar temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
      Today
      Sat 08/22
      High 86°f
      1% Precip. / 0 in
      Sunny. High 86F. Winds WNW at 5 to 10 mph.
      Tonight
      Sat 08/22
      Low 65°f
      33% Precip. / 0.03 in
      Becoming partly cloudy with isolated thunderstorms developing late. Low around 65F. Winds light and variable. Chance of rain 30%.
      Tomorrow
      Sun 08/23
      High 84°f59°f
      20% Precip. / 0 in
      Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 84F. Winds NW at 10 to 20 mph.
      Hourly Forecast
      Now
      82°
      1PM
      83°
      2PM
      84°
      3PM
      85°
      4PM
      84°
      5PM
      84°
      6PM
      83°
      7PM
      82°
      8PM
      79°
      8:35PM
      Sunset
      9PM
      74°
      10PM
      71°
      11PM
      70°
      12AM
      68°
      1AM
      68°
      2AM
      68°
      3AM
      67°
      4AM
      67°
      5AM
      32%
      67°
      6AM
      34%
      66°
      7AM
      66°
      7:09AM
      Sunrise
      8AM
      68°
      9AM
      70°
      10AM
      73°
      11AM
      76°
      12PM
      79°
      Precipitation
      34%
      Pollen
      Grass Pollen
      Low
      Air Quality
      49
      Good
      UV Index
      8
      Very High
      Additional Conditions
      1. Pressure 30.03 in
      2. Visibility 10 miles
      3. Clouds Partly Cloudy
      4. Dew Point68°F
      5. Humidity 63%
      6. Rainfall 0 in
      7. Snow Depth 0 in
       KSIV Station History
      Almanac for August 21, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 86°F 85°F 91°F 2017
      4. Low 64°F 64°F 54°F 2015
      5. Rain/Snow Depth
      6. Precipitation 0.03 in - in -
      7. Snow 0 in - in -
      Almanac for August 22, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 84°F 85°F 93°F
      4. Low 64°F 64°F 54°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 7:08 AM 8:36 PM
      3. Civil Twilight 6:40 AM 9:04 PM
      4. Nautical Twilight 6:06 AM 9:37PM
      5. Astronomical Twilight 5:30 AM 10:13 PM
      1. Length of Visible Light 14h 23m
      2. Length of Day 13h 27m
      3. Tomorrow will be 2 minutes 20 seconds shorter
      1. Moon 4:36 PM 12:43 AM
      2. Waxing Gibbous66% of the Moon is Illuminated
      Aug 28
      Full Moon
      Sep 4
      Waning Half Last Qtr
      Sep 10
      New Moon
      Sep 18
      Waxing Half First Qtr
      Precipitation
      Loading…
      Health
      Loading…
      Weather Alerts
      Loading…
      Our AppsAbout UsContactCareersWeather Data APIs
      PWS NetworkWundermapFeedback & Support
      Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
      essentialaccessibility.com
      We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
      Review All Privacy and Ad Settings
      Choose how my information is shared
      Data Rights
      The Weather Company The Weather Channel Weather Underground Storm Radar
      © The Weather Company, LLC 2026
      Glossary