Install
Nashville, IL 62263 Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Thursday Night
Clear, with a low around 46. Northeast wind around 1 mph.
-
Friday
Sunny. High near 75, with temperatures falling to around 71 in the afternoon.
-
Friday Night
Mostly clear, with a low around 45.
National Weather Service forecast updated 1 day ago.
Hourly
Hourly forecast- Now71°
- 7 PM66°
- 8 PM61°
- 9 PM58°
- 10 PM56°
- 11 PM54°
- Fri12 AM53°
- 1 AM51°
- 2 AM50°
- 3 AM49°
- 4 AM48°
- 5 AM47°
- 6 AM47°
- 7 AM46°
- 8 AM51°
- 9 AM56°
- 10 AM61°
- 11 AM65°
- 12 PM69°
- 1 PM73°
- 2 PM73°
- 3 PM74°
- 4 PM75°
- 5 PM71°
10-day forecast
Details- TonightOct 20Mostly Clear45°
- WedOct 21Sunny47°74°
- TodayOct 22Sunny46°76°
- FriOct 23Sunny45°75°
- SatOct 24Mostly Sunny48°75°
- SunOct 25Mostly Sunny48°77°
- MonOct 26Partly Sunny49°75°
- TueOct 27Slight Chance Rain Showers15%70°
- WedOct 28Partly cloudy52°77°
- ThuOct 29Cloudy0.04 in53°74°
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 Nashville
More weather news-
A big cooldown will drop temperatures to their lowest levels in monthsA view of the Manhattan skyline illuminated at night, with autumn foliage in the foreground along the East River in New York City, on October 12. People visit Taughannock Falls State Park in Ithaca, New York, on October…
- 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…
-
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…
-
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…
-
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…
-
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
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- ThuModerate
- FriModerate
- SatModerate
St. Louis (Metro-east), IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Nearby
- Belleville 56 km
- O'Fallon 54 km
- Fairview Heights 60 km
- Mount Vernon 42 km
- Swansea 57 km
- Shiloh 51 km
- Centralia 30 km
- Highland 51 km
- Mascoutah 40 km
- Salem 50 km
- Benton 55 km
- Du Quoin 38 km
Forecasters' discussion
From the National Weather Service office in LSX, issued 3 hrs ago
Key Messages
- Dry and seasonably warm conditions will persist through the weekend.
Short Term
Issued at 219 PM CDT Thu Oct 22 2026
A slow-moving upper-level ridge will dominate the Mid-Mississippi River Valley through the weekend with dry conditions continuing and only slight variations in above average temperatures. With a gradual exit of the surface high pressure center extending into the CWA this afternoon, the balance of airmass modification and subtle southeasterly low-level CAA through Friday followed by waves of upper-level clouds on Saturday and Sunday combined with weak southerly WAA will contribute to only slight fluctuations of high temperatures within the 70s F. Each night, the most favorable radiational cooling and coolest low temperatures in the 40s F will also become more and more confined to river valleys and southeastern MO/southwestern IL, closest to the high pressure and where clouds will be less prevalent and/or thinner. Patchy river valley fog is expected again Friday morning and potentially Saturday morning but coverage should be less.
Long Term
Issued at 219 PM CDT Thu Oct 22 2026
Global model guidance diverges considerably early to mid-next week in the evolution of an upper-level trough that propagates into the central CONUS Monday into Tuesday as the Omega Block breaks down. The track, amplitude, and tilt of this trough vary across guidance including whether an associated cold front passes through the CWA Tuesday or early Wednesday, enters and then stalls in the CWA, or stalls before reaching the CWA altogether. Accordingly, the NBM interquartile range increases to between 7 and 15 F Tuesday onward, with the 75th percentile remaining steady and the 25th percentile cooling closer to average. If the front reaches the CWA, showers will also become possible, with greatest probabilities of measurable rainfall in global ensemble models across central/northeastern MO and west-central IL at 30 to 50 percent. However, a widespread, substantial rainfall appears unlikely in the ranges of current scenarios. The aforementioned uncertainties persist through the end of the forecast period, late next week.
Aviation
Issued at 1211 PM CDT Thu Oct 22 2026
Dry and VFR flight conditions will persist through the TAF period with the exception of river valley fog again Friday morning. KSUS and KCPS are most favored for a short period of impacts from fog around sunrise Friday. Winds will remain light and eventually become more southeasterly to southerly on Friday.
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.