Rochester, Illinois Weather
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Weather Forecast for Rochester, Illinois : Sangamon County
Issued: 2:56 am CDT Jun 4, 2025 Latitude: 39.7494943 Longitude: -89.5317603 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
70% chance of thunderstorms on Overnight 80% chance of thunderstorms on Wednesday Partly Sunny on Thursday 60% chance of thunderstorms on Friday Mostly Sunny on Saturday 40% chance of rain on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 67°F High: 74°F High: 79°F High: 78°F High: 77°F High: 81°F High: 78°F High: 80°F
Low: 61°F Low: 62°F Low: 61°F Low: 59°F Low: 61°F Low: 57°F  
Thunderstorms Thunderstorms Partly Sunny Thunderstorms Mostly Sunny Rain Sunny Mostly Sunny
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Current Conditions at
SPRINGFIELD - (KSPI)
68°
Cloudy
Light Rain
as of 4:52 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: IFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Broken at 900ft, Broken at 4200ft, Solid Overcast at 12000ft
Current Conditions at
TAYLORVILLE MUNICIPAL - (KTAZ)
68°
Cloudy
Rain
as of 5:02 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 7 Miles
Pressure: 29.94 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Broken at 900ft, Broken at 2700ft, Solid Overcast at 9000ft
Current Conditions at
LOGAN COUNTY AIRPORT - (KAAA)
70°
Cloudy
Light Rain
as of 4:55 AM CDST
Rel. Humidity: 100%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: MVFR
Wind Data
3 MPH
230° Southwest
Cloud Level(s): Scattered at 900ft, Solid Overcast at 1900ft
Current Conditions at
DECATUR - (KDEC)
73°
Cloudy
Light Rain
as of 5:02 AM CDST
Rel. Humidity: 78%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 25 MPH
240° Southwest
Cloud Level(s): Few at 2800ft, Scattered at 3200ft, Solid Overcast at 7500ft
70% chance of thunderstorms Overnight Overnight... Showers likely and possibly a thunderstorm. Cloudy, with a low around 67. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
80% chance of thunderstorms Wednesday Wednesday... Showers and possibly a thunderstorm. High near 74. South southwest wind 8 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
70% chance of thunderstorms Wednesday Night Wednesday Night... Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 61. North northeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 79. East northeast wind around 7 mph.
30% chance of rain Thursday Night Thursday Night... A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 62. Northeast wind 3 to 5 mph.
60% chance of thunderstorms Friday Friday... A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely after 1pm. Mostly cloudy, with a high near 78. North wind 5 to 7 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 61. North wind 3 to 6 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 77.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 59.
40% chance of rain Sunday Sunday... A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 81.
20% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Sunny on Monday Monday... Sunny, with a high near 78.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 57.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 80.
Current Radar Image


Sun Almanac for Rochester, Illinois
Sunrise: 05:31 AM
Sunset: 8:22 PM
Civil Sunrise:04:59 AM
Civil Sunset: 8:54 PM
Nautical Sunrise: 04:18 AM
Nautical Sunset: 9:35 PM
Astro Sunrise: 03:32 AM
Astro Sunset: 10:22 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.