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Newton, IL Weather
Current conditions
Observed at Olney-Noble Airport · 47 min ago
Forecast
10-day-
This Afternoon
Sunny, with a high near 74. North northeast wind around 2 mph.
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Tonight
Clear, with a low around 45. North wind around 1 mph.
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Thursday
Sunny, with a high near 75. North northeast wind around 3 mph.
National Weather Service forecast updated 30 min ago.
Hourly
Hourly forecast- Now72°
- 2 PM73°
- 3 PM74°
- 4 PM74°
- 5 PM73°
- 6 PM70°
- 7 PM66°
- 8 PM61°
- 9 PM56°
- 10 PM54°
- 11 PM53°
- Thu12 AM50°
- 1 AM49°
- 2 AM48°
- 3 AM47°
- 4 AM47°
- 5 AM46°
- 6 AM46°
- 7 AM45°
- 8 AM47°
- 9 AM53°
- 10 AM62°
- 11 AM67°
- 12 PM70°
Daily forecast
Details- TodayOct 21Sunny45°74°
- ThuOct 22Sunny46°75°
- FriOct 23Sunny45°74°
- SatOct 24Mostly Sunny45°73°
- SunOct 25Mostly Sunny47°76°
- MonOct 26Partly Sunny48°76°
- TueOct 27Partly Sunny46°71°
- WedOct 28Cloudy41°56°
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 Newton
More weather news-
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Vincennes, IN reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyRobinson, records since 1895. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Charleston 56 km
- Mattoon 58 km
- Effingham 36 km
- Olney 30 km
- Robinson 37 km
- Flora 45 km
- Lawrenceville 51 km
- Sumner 40 km
- Casey 37 km
- Altamont 51 km
Forecasters' discussion
From the National Weather Service office in ILX, issued 1 hr 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.