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Ottawa Weather Warning NWS WEATHER ALERT FOR THE OTTAWA, IL AREA - Issued: 249 PM CDT Tue Sep 8 2026 Ottawa Weather Warning

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Ottawa, IL Weather - Hour by Hour Forecast

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Ottawa, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 73°F23°C, dew point 64°F18°C, humidity 73%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.05 in1018 mb.
Rest of Tonight - Partly cloudy after midnight, then becoming mostly cloudy. Isolated showers after midnight. A slight chance of thunderstorms after.. Full Forecast
Wednesday - Mostly cloudy. Showers with a slight chance of thunderstorms in the morning, then isolated showers early in the afternoon. Humid w.. Full Forecast

Ottawa Hourly Weather

24 Hour Forecast Scroll
Wed, Sep 09
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Midnight
Ottawa, IL Hourly Weather - Cloudy - 1:00 AM Ottawa, IL Hourly Weather - Cloudy - 2:00 AM Ottawa, IL Hourly Weather - Cloudy - 3:00 AM Ottawa, IL Hourly Weather - Cloudy - 4:00 AM Ottawa, IL Hourly Weather - Cloudy - 5:00 AM Ottawa, IL Hourly Weather - Cloudy - 6:00 AM Ottawa, IL Hourly Weather - Cloudy - 7:00 AM Ottawa, IL Hourly Weather - Cloudy - 8:00 AM Ottawa, IL Hourly Weather - Cloudy - 9:00 AM Ottawa, IL Hourly Weather - Cloudy - 10:00 AM Ottawa, IL Hourly Weather - Cloudy - 11:00 AM Ottawa, IL Hourly Weather - Cloudy - 12:00 PM Ottawa, IL Hourly Weather - Cloudy - 1:00 PM Ottawa, IL Hourly Weather - Cloudy - 2:00 PM Ottawa, IL Hourly Weather - Cloudy - 3:00 PM Ottawa, IL Hourly Weather - Cloudy - 4:00 PM Ottawa, IL Hourly Weather - Cloudy - 5:00 PM Ottawa, IL Hourly Weather - Mostly Cloudy - 6:00 PM Ottawa, IL Hourly Weather - Mostly Cloudy - 7:00 PM Ottawa, IL Hourly Weather - Mostly Cloudy - 8:00 PM Ottawa, IL Hourly Weather - Partly Cloudy - 9:00 PM Ottawa, IL Hourly Weather - Partly Cloudy - 10:00 PM Ottawa, IL Hourly Weather - Partly Cloudy - 11:00 PM Ottawa, IL Hourly Weather - Mostly Cloudy - 12:00 AM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy
73°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 72°F22°C 73°F23°C 75°F24°C 77°F25°C 80°F27°C 82°F28°C 82°F28°C 82°F28°C 82°F28°C 80°F27°C 79°F26°C 77°F25°C 76°F24°C 74°F23°C 73°F23°C 72°F22°C 71°F22°C
Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain - - - - - - - - - - -
69% 69% 69% 69% 69% 69% 69% 82% 82% 82% 82% 82% 82% 4% 4% 4% 4% 4% 4% 6% 6% 6% 6% 6%
63°F17°C 63°F17°C 64°F18°C 64°F18°C 64°F18°C 65°F18°C 65°F18°C 66°F19°C 67°F19°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 67°F19°C
71% 71% 76% 76% 79% 81% 84% 81% 82% 79% 74% 67% 63% 63% 65% 65% 69% 69% 74% 76% 82% 84% 87% 87%
SSE S S S S SW SW SW SW SW SSW SSW SSW SSW W W W W WNW W W W W W
4 mph 4 mph 5 mph 5 mph 5 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 7 mph 7 mph 7 mph 4 mph 4 mph 4 mph 3 mph 3 mph 3 mph 3 mph
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 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 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
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Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KVYS model statistics.

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Prob Precip % = Probability of Precipitation.

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

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