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Petersburg, IL Weather
Current conditions
Observed at Springfield - Abraham Lincoln Capital Airport · 47 min ago
Forecast
10-day-
Sunday
Partly sunny, with a high near 78. South southeast wind around 3 mph.
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Sunday Night
Mostly cloudy, with a low around 51. South southeast wind around 2 mph.
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Monday
Partly sunny, with a high near 78. South wind 0 to 3 mph.
National Weather Service forecast updated 5 hrs ago.
Hourly
Hourly forecast- Now49°
- 7 AM48°
- 8 AM49°
- 9 AM55°
- 10 AM63°
- 11 AM68°
- 12 PM72°
- 1 PM75°
- 2 PM76°
- 3 PM77°
- 4 PM78°
- 5 PM76°
- 6 PM73°
- 7 PM68°
- 8 PM61°
- 9 PM59°
- 10 PM58°
- 11 PM57°
- Mon12 AM56°
- 1 AM55°
- 2 AM54°
- 3 AM54°
- 4 AM53°
- 5 AM52°
10-day forecast
Details- TonightOct 24Mostly Cloudy48°
- TodayOct 25Partly Sunny51°78°
- MonOct 26Partly Sunny50°78°
- TueOct 27Mostly Cloudy52°75°
- WedOct 28Mostly Sunny55°79°
- ThuOct 29Sunny54°81°
- FriOct 30Mostly Sunny10%56°79°
- SatOct 31Chance Rain Showers37%76°
- SunNov 1Cloudy0.06 in57°73°
- MonNov 2Cloudy56°66°
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 in Illinois
More weather news- Capitol Fax.com - Your Illinois News Radar » Good morning!
Thursday, Oct 22, 2026 - Posted by Isabel Miller DOMi & JD BECK, Herbie Hancock… - Barton - Thursday, Oct 22, 26 @ 8:53 am: Oh yeah, and you have to monitor comments between it all. Thank you for the lessons…
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Strong El Niño likely means a milder winter for northern Illinois, climatologist saysAfter a record tornado year, northern Illinois may get a break: forecasters favor a warmer-than-average winter as El Niño strengthens in the Pacific. El Niño refers to a warming of the Pacific Ocean’s surface that…
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Gorgeous weather continues for Central IllinoisWEDNESDAY: Warming up with sunny skies and calm conditions. High: 75 Low: 47 THURSDAY: Above average with sunny skies. High: 76 Low: 47 FRIDAY: Nice weather continues with sunny skies. High: 76 Low: 46 SATURDAY: Some…
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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
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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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Winter outlook calling for 'less active storm track' in IllinoisIt’s not too early to start talking about the winter outlook for Illinois. “We’re looking at warmer temperatures and a less active storm track,” said DTN Agriculture Meteorologist John Baranick during a Tuesday visit on…
Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- SunModerate
- MonModerate
Springfield, 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
MonthlySpringfield Area, records since 1879. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Springfield 29 km
- Jacksonville 45 km
- Lincoln 44 km
- Chatham 39 km
- Beardstown 49 km
- Auburn 48 km
- Sherman 25 km
- Rochester 40 km
- Riverton 32 km
- Virden 57 km
- South Jacksonville 47 km
- Havana 37 km
Forecasters' discussion
From the National Weather Service office in ILX, issued 4 hrs ago
Key Messages
- Temperatures will continue to be above normal this week, with highs in the mid to upper 70s, nearing 80 in some places later in the week. Normal highs for this time of year is around 61-65 degrees across central and southeastern IL.
Discussion
Issued at 205 AM CDT Sun Oct 25 2026
The blocking pattern continues over the eastern half of the United States. A low pressure system is moving well off to the north of central IL, up in Canada, this weekend with a cold front sitting off to our W/NW. Some high cloud cover at times is expected for today.
Temperatures will continue to be above normal this week. Highs will be in the mid to upper 70s, nearing 80 in some places later in the week. Lows for the first half of the week will be in the upper 40s to low 50s. Then will warm to the mid to upper 50s for the second half of the week. Normal highs for this time of year is around 61-65 degrees across central and southeastern IL. The CPC's 6-10 day, 8-14 day, and Week 3-4 outlooks all show above normal temperatures. Dry weather will last through much of the extended period as well.
A weak shortwave passage through central IL has been trending later in the week over the last few forecast cycles. Now it looks to pass through on Thursday, possibly bringing some light sprinkles near and north of the IL River Valley. However, it could pass without any activity due to how dry our airmass is.
The next best chance for any rain is more likely to arrive this next weekend, just in time for Halloween festivities. A stronger shortwave appears to pulse through IL Saturday/Sunday next week, bringing a 40-60% chance for showers. Amounts are forecast to be pretty minimal, but there is time for this forecast to change. Timing/location/amounts will continue to shift as we move closer. Trends will continue to be monitored with future forecasts.
Aviation
Issued at 1207 AM CDT Sun Oct 25 2026
Aside from a few mid to high clouds at times, VFR conditions are forecast the next 24 hours. Winds will remain light out of the south- southeast.
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 4Search index and reflects what the press published. Terms of use.