Install
Peoria, IL 61603 Weather
Current conditions
Observed at Peoria - General Downing-Peoria International Airport · 1 hr ago
Forecast
10-day-
Tonight
Mostly clear, with a low around 50. Wind around 0 mph.
-
Thursday
Sunny, with a high near 75. Wind around 0 mph.
-
Thursday Night
Clear, with a low around 50. East wind around 1 mph.
National Weather Service forecast updated 3 hrs ago.
Hourly
Hourly forecast- Now60°
- 10 PM58°
- 11 PM57°
- Thu12 AM55°
- 1 AM54°
- 2 AM53°
- 3 AM52°
- 4 AM52°
- 5 AM51°
- 6 AM50°
- 7 AM50°
- 8 AM51°
- 9 AM55°
- 10 AM61°
- 11 AM66°
- 12 PM71°
- 1 PM73°
- 2 PM74°
- 3 PM75°
- 4 PM74°
- 5 PM73°
- 6 PM70°
- 7 PM65°
- 8 PM62°
10-day forecast
Details- TonightOct 21Mostly Clear50°
- ThuOct 22Sunny50°75°
- FriOct 23Sunny51°75°
- SatOct 24Mostly Sunny51°74°
- SunOct 25Partly Sunny52°76°
- MonOct 26Partly Sunny50°74°
- TueOct 27Partly Sunny11%48°66°
- WedOct 28Mostly Sunny68°
- ThuOct 29Partly cloudy0.02 in40°62°
- FriOct 30Partly cloudy47°60°
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 Peoria
More weather news- 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…
- 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…
- Cooling Down And Getting Windy
WEEK | 25 News Now CENTRAL ILLINOIS (25News Now) - Temperatures are getting cooler soon but we can’t get used to them as we warm back up relatively soon. We also get some gusty winds moving through tonight. Gusty Winds…
-
Rain Chances Return Today Ahead Of A Gusty FridayWEEK | 25 News Now Rain Chances Return Today Ahead Of A Gusty Friday Superheroes swing into action at OSF Children’s Hospital in Peoria Illinois Wesleyan expands direct admission to all 13 McLean County high schools…
-
Cooling Down Before We Warm UpGetting cooler and rainfall expected tomorrow CENTRAL ILLINOIS (25News Now) - Our temperatures will drop again and rain and wind will move in. Highs will be dropping from the 70s today down to the 50s soon starting on…
-
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…
-
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…
-
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…
-
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…
-
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
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedModerate
- ThuModerate
- FriModerate
Peoria, IL reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyPeoria Area, records since 1883. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- North Peoria 1 km
- Bloomington 55 km
- Normal 54 km
- Pekin 17 km
- East Peoria 5 km
- Washington 14 km
- Morton 15 km
- Canton 42 km
- Bartonville 9 km
- Chillicothe 24 km
- Peoria Heights 4 km
- Eureka 26 km
Forecasters' discussion
From the National Weather Service office in ILX, issued 8 hrs ago
Key Messages
- Sunny mild days and cool nights persist across central and southeast Illinois through Sunday, with highs in the mid- upper 70s and lows in the 40s.
- A cold front moves across the region early next week, bringing prospects for light rain, followed by cooler temperatures.
Discussion
Issued at 1211 PM CDT Wed Oct 21 2026
Surface ridge axis centered across the area provides quiet, clear conditions across central and southeast Illinois. Dry air and subsidence will continue to produce mainly clear skies and large diurnal temperature swings over the next several days.
Mid-level heights build across the Mississippi Valley Friday and this weekend as the surface high slips farther east. Models show strong consensus on establishing persistent southerly return flow. 850-hPa temperatures in the lower teens C, along with deeper mixing support afternoon highs around 80F on Sunday, around 15 degrees above climatological averages.
Medium-range deterministic solutions (ECMWF, ECMWF-AI, and GFS) and the ensemble suite diverge early next week regarding the progression of an upstream longwave trough and associated surface cold front. The deterministic GFS exhibits a faster frontal transit across central Illinois Monday evening with stronger pre-frontal 850-hPa flow (4050 kt). Conversely, the ECMWF and ECMWF-AI are roughly 6 to 12 hours slower, maintaining a broader frontal structure and tracking the primary boundary through the forecast area Tuesday. GEFS and ECMWF ensemble members favor this slower progression. Latest NBM run has lowered PoPs below mentionable levels, but this will likely change as the system develops. Behind the front, a shot of cooler air will move in, returning temperatures to more seasonable levels Tue-Wed.
Aviation
Issued at 1211 PM CDT Wed Oct 21 2026
Another cycle of VFR conditions and light/variable winds with high pressure in control.
Ilx Watches
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 4Conservative index and reflects what the press published. Terms of use.