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Sullivan Weather Warning NWS WEATHER ALERT FOR THE SULLIVAN, IL AREA - Issued: 242 PM CDT Wed Sep 16 2026 Sullivan Weather Warning

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Sullivan, IL Weather - Hour by Hour Forecast

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Sullivan, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Clear. Temperature is 84°F29°C, dew point 73°F23°C, humidity 69%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.22 in1023 mb.
Tonight - Partly cloudy. Lows in the lower 70s. Northeast winds around 5 mph, becoming southeast after midnight... Full Forecast
Thursday - Mostly sunny. Humid with highs in the lower 90s. West winds 5 to 10 mph. Heat index values up to 100... Full Forecast

Sullivan Hourly Weather

24 Hour Forecast Scroll
Wed, Sep 16
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Sullivan, IL Hourly Weather - Mostly Clear - 7:00 PM Sullivan, IL Hourly Weather - Mostly Clear - 8:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 9:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 10:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 11:00 PM Sullivan, IL Hourly Weather - Mostly Cloudy - 12:00 AM Sullivan, IL Hourly Weather - Mostly Cloudy - 1:00 AM Sullivan, IL Hourly Weather - Mostly Cloudy - 2:00 AM Sullivan, IL Hourly Weather - Cloudy - 3:00 AM Sullivan, IL Hourly Weather - Cloudy - 4:00 AM Sullivan, IL Hourly Weather - Cloudy - 5:00 AM Sullivan, IL Hourly Weather - Cloudy - 6:00 AM Sullivan, IL Hourly Weather - Cloudy - 7:00 AM Sullivan, IL Hourly Weather - Cloudy - 8:00 AM Sullivan, IL Hourly Weather - Mostly Cloudy - 9:00 AM Sullivan, IL Hourly Weather - Mostly Cloudy - 10:00 AM Sullivan, IL Hourly Weather - Mostly Cloudy - 11:00 AM Sullivan, IL Hourly Weather - Mostly Clear - 12:00 PM Sullivan, IL Hourly Weather - Mostly Clear - 1:00 PM Sullivan, IL Hourly Weather - Mostly Clear - 2:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 3:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 4:00 PM Sullivan, IL Hourly Weather - Partly Cloudy - 5:00 PM Sullivan, IL Hourly Weather - Mostly Clear - 6:00 PM
Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear
85°F29°C 83°F28°C 80°F27°C 78°F26°C 77°F25°C 76°F24°C 75°F24°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C 74°F23°C 77°F25°C 80°F27°C 83°F28°C 87°F31°C 90°F32°C 91°F33°C 91°F33°C 92°F33°C 89°F32°C 87°F31°C
- Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain - - - - - - - - - - -
5% 26% 26% 26% 26% 26% 26% 28% 28% 28% 28% 28% 28% 12% 12% 12% 12% 12% 12% 13% 13% 13% 13% 13%
74°F23°C 73°F23°C 72°F22°C 71°F22°C 70°F21°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 69°F21°C 70°F21°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 71°F22°C 71°F22°C
70% 72% 77% 79% 79% 79% 79% 82% 82% 84% 84% 87% 87% 84% 79% 77% 67% 59% 52% 50% 50% 49% 56% 59%
N SSW SSE ENE ENE NE NE NE NE NE NE NE NE ENE E E E E E E ENE NE ENE ENE
5 mph 5 mph 5 mph 5 mph 5 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 3 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 3 mi5 km 3 mi5 km .75 mi1 km .75 mi1 km .75 mi1 km .75 mi1 km 3 mi5 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KMTO model statistics.

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Prob Precip % = Probability of Precipitation.

Sullivan 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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