New Salem, IL Weather Forecast
Local 7-day forecast
Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for New Salem, IL in one place.
Rain showers and patchy fog before 10am, then patchy fog and showers and thunderstorms. Mostly cloudy, with a high near 74. South wind 5 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for New Salem, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 11:00 AM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for New Salem, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 11:00 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in New Salem
Wednesday looks like the warmest upcoming period in New Salem at 76 degrees F.
Friday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 16 to 20 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 11:00 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 46. West wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Isolated rain showers between 2pm and 4pm. Partly sunny, with a high near 54. Northwest wind 16 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
Partly cloudy, with a low around 37. North wind 5 to 17 mph, with gusts as high as 29 mph.
Sunny, with a high near 58. North wind 0 to 3 mph.
Clear, with a low around 37.
Sunny, with a high near 67.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 73.
Mostly clear, with a low around 48.
Sunny, with a high near 76.
Mostly clear, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Patchy Fog
|
74°F |
5 to 12 mph
S
|
|
Tonight
Oct 15
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
46°F |
13 to 17 mph
W
|
|
Friday
Oct 16
|
Partly Sunny then Isolated Rain Showers
|
54°F |
16 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
37°F |
5 to 17 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
58°F |
0 to 3 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
0 to 3 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
7 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
71°F |
3 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
1 mph
E
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
73°F |
2 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
48°F |
2 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
76°F |
2 to 6 mph
S
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
52°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Salem.