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Winnebago, IL 61088 Weather
Current conditions
Observed at Rockford, Greater Rockford Airport · 47 min ago
Forecast
10-day-
Tonight
Patchy fog after 3am. Mostly clear. Low around 45, with temperatures rising to around 47 overnight. West southwest wind 0 to 5 mph.
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Thursday
Patchy fog before 9am. Sunny. High near 73, with temperatures falling to around 71 in the afternoon. Northeast wind around 0 mph.
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Thursday Night
Mostly clear, with a low around 47. East southeast wind 0 to 5 mph.
National Weather Service forecast updated 2 hrs ago.
Hourly
Hourly forecast- Now66°
- 7 PM60°
- 8 PM57°
- 9 PM55°
- 10 PM54°
- 11 PM53°
- Thu12 AM52°
- 1 AM50°
- 2 AM49°
- 3 AM48°
- 4 AM48°
- 5 AM47°
- 6 AM47°
- 7 AM46°
- 8 AM47°
- 9 AM52°
- 10 AM59°
- 11 AM64°
- 12 PM68°
- 1 PM71°
- 2 PM72°
- 3 PM72°
- 4 PM72°
- 5 PM71°
10-day forecast
Details- TodayOct 21Sunny45°72°
- ThuOct 22Patchy Fog then Sunny47°73°
- FriOct 23Mostly Sunny50°72°
- SatOct 24Partly Sunny51°71°
- SunOct 25Partly Sunny50°72°
- MonOct 26Partly Sunny18%45°66°
- TueOct 27Slight Chance Rain Showers22%44°61°
- WedOct 28Cloudy0.55 in49°64°
- ThuOct 29Rain0.46 in38°60°
- FriOct 30Sunny36°55°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Winnebago
More weather news- Weather alert issued for the Kansas City area Tuesday night
The National Weather Service issued a weather alert at 9:53 p.m. on Tuesday for strong thunderstorms until 10:15 p.m. The alert is for Jackson, Ray, Lafayette, Cass and Johnson counties. "At 9:53 p.m., Doppler radar…
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Another beautiful day ahead for Central IllinoisDECATUR, Ill. (WAND) – If you’re looking for a reason to get outside, Tuesday is your day. A high-pressure system settling over the Midwest is bringing abundant sunshine and calm winds to Central Illinois, with…
- Central Illinois Winter Weather Outlook
The winter weather outlook for central and southeast Illinois has been released, and a detailed summary is available at this link. Some of the highlights: Current Conditions Latest Observations Daily Climate Maps…
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One of the year’s most pleasant weather stretches arrives in Central IllinoisDECATUR, Ill. (WAND) – A beautiful stretch of sunshine and mild temperatures is settling into the region, and it’s the perfect time to get outside and enjoy it. High pressure is taking control of the Midwest, locking in…
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A great week ahead for Central IllinoisWAND DECATUR, Ill. (WAND) – A wonderful weekend across Central Illinois carries into the start of the workweek. Overnight lows dip back into the upper 30s tonight with a small risk for patchy frost, though coverage will…
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Sunshine, chilly mornings and a big warm-up ahead for central IllinoisCENTRAL ILLINOIS (25News Now) - Fall is making an appearance across central Illinois this weekend, but don’t get too comfortable with the chilly temperatures. After a cold start on Sunday morning, sunshine will help…
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Overnight Frost Advisory for parts of Illinois, NW IndianaCBS News Colorado 10pm Saturday CBS News Detroit Weekend 11pm CBS News Los Angeles Weekend 9pm CBS News Philadelphia Weekend 11pm KDKA News Weekend 11pm CBS News Texas Weekend 10pm
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Frost advisory back in effect for Central IllinoisWAND DECATUR, Ill. (WAND) – Another cool day starts the weekend across Central Illinois with highs Saturday only reaching the upper 50s under plenty of sunny skies. Strong high pressure remains in control keeping skies…
- Illinois Winter Weather: First Snow Before Thanksgiving, Nov. 26?
Chicago, IL – Illinois residents wondering when the first measurable snowfall of the 2026 winter season might arrive could see dramatically different conditions depending on where they live. While Chicago typically…
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Frosty Nights Ahead Before a Warm-Up Arrives in Central IllinoisCENTRAL ILLINOIS (25News Now) - Central Illinois is in for a chilly weekend, with temperatures dropping into the 30s and frost possible overnight. But after a cool start to the weekend, a warming trend will bring…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedModerate
- ThuModerate
- FriModerate
Rockford, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyRockford Area, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Rockford 12 km
- Janesville 49 km
- DeKalb 55 km
- Beloit 31 km
- Belvidere 32 km
- Freeport 32 km
- Loves Park 16 km
- Machesney Park 18 km
- Sycamore 55 km
- Dixon 52 km
- Monroe 49 km
- Roscoe 24 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 4 hrs ago
Key Messages
- The dry and unseasonably mild weather will continue through the upcoming weekend.
Discussion
Issued at 136 PM CDT Wed Oct 21 2026
An anomalously strong mid-level ridge over the central CONUS will anchor omega blocking across much of North America over the next several days. Meanwhile, an elongated surface ridge extending from the Lower Mississippi River Valley to the Canadian Maritimes is in the processes of congealing with another expansive high pressure shifting toward the Upper Great Lakes. As a result, quiet weather with unseasonably warm conditions will continue through the upcoming weekend. As was observed the past few mornings, generally clear skies and light/calm winds should promote shallow fog across primarily interior northern Illinois late tonight through sunrise Thursday.
The blocking pattern will slowly break down early next week as the ridge flattens and a southwestern upper-level low begins to meander toward the central CONUS. A series of smaller troughs on the periphery of a developing longwave trough across the north Pacific and western Canada will eventually pick up the southwestern low. Consensus guidance suggests that the influence of the low on our area could occur as early as Monday night, but more likely Tuesday and Wednesday. Cooler and more seasonable conditions would accompany this system.
Kluber
Aviation
Issued at 1217 PM CDT Wed Oct 21 2026
Expect generally VFR conditions with a few mid-level clouds through the period as high pressure drifts over the area. However, as has been observed during the past few mornings, MIFG/BCFG is likely at RFD/DPA and VFR BR is possible at ORD late tonight through sunrise Thursday.
Light SW winds are expected this afternoon, though a weak lake breeze may wash out and turn winds SE 5 knots or less over ORD and especially MDW toward sunset. Winds will become calm or light and VRB tonight into Thursday morning, with a lake- enhanced NE wind shift likely by Thursday afternoon.
Kluber
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.