Salem, IL 62881 Weather

Marion County4:19 PM CDT38.63°N, 88.95°W

Current conditions

Clear
76°
Clear
Feels like 74°
High 74°·Low 46°
WindCalm
Humidity31%
Dew point43°
Pressure30.21 inHg
Visibility10.0 mi
Cloud cover16%
UV index1 Low
Sunrise7:12 AM
Sunset6:11 PM

Observed at Salem, Salem-Leckrone Airport · 1 hr ago

Forecast

10-day

  • This Afternoon

    Sunny, with a high near 74. Wind around 0 mph.

  • Tonight

    Mostly clear, with a low around 46. Wind around 0 mph.

  • Thursday

    Sunny, with a high near 76. North wind around 2 mph.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Sunny 74°
  2. 5 PM Sunny 72°
  3. 6 PM Mostly Clear 69°
  4. 7 PM Mostly Clear 64°
  5. 8 PM Mostly Clear 58°
  6. 9 PM Mostly Clear 56°
  7. 10 PM Mostly Clear 54°
  8. 11 PM Mostly Clear 53°
  9. Thu12 AM Mostly Clear 52°
  10. 1 AM Mostly Clear 50°
  11. 2 AM Clear 49°
  12. 3 AM Clear 48°
  13. 4 AM Clear 48°
  14. 5 AM Mostly Clear 47°
  15. 6 AM Sunny 46°
  16. 7 AM Sunny 46°
  17. 8 AM Sunny 48°
  18. 9 AM Sunny 55°
  19. 10 AM Sunny 64°
  20. 11 AM Sunny 69°
  21. 12 PM Sunny 72°
  22. 1 PM Sunny 74°
  23. 2 PM Sunny 75°
  24. 3 PM Sunny 76°

10-day forecast

Details
  1. TodayOct 21 Sunny Sunny46°74°
  2. ThuOct 22 Sunny Sunny47°76°
  3. FriOct 23 Sunny Sunny45°75°
  4. SatOct 24 Mostly Sunny Mostly Sunny47°75°
  5. SunOct 25 Partly Sunny Partly Sunny48°77°
  6. MonOct 26 Partly Sunny Partly Sunny48°77°
  7. TueOct 27 Partly Sunny Partly Sunny46°72°
  8. WedOct 28 Partly cloudy Partly cloudy51°76°
  9. ThuOct 29 Showers Showers0.10 in50°74°
  10. FriOct 30 Sunny Sunny40°61°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Illinois

More weather news

Sun & moon

Sunrise 7:12 AM
Sunset 6:11 PM
Daylight 10 h 59 min (−2 min 22 s tomorrow)
Waxing Gibbous · 80% lit
Moonrise 3:47 PM Moonset 2:18 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low66° / 43°
Record high88° (1963)
Record low22° (1952)
Wettest2.58 in (1984)
Yesterday72° / 36°
Month to date0.43 in (normal 2.13 in)

Mt Vernon 3 Ne, records since 1895. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LSX, issued 4 hrs ago

Key Messages

- Seasonably warm and dry weather will last through this weekend.

Short Term

Issued at 257 AM CDT Wed Oct 21 2026

No significant changes have been made to the forecast. The mid-level omega blocking pattern and surface high pressure influence will keep our sensible weather consistently dry, and insolation will act as the sole driver for our gradually warming temperatures. Expect highs generally in the mid-70s today and tomorrow with lows in the 40s to low-50s in between.

Long Term

Issued at 257 AM CDT Wed Oct 21 2026

The pattern begins to change late this week. A mid-level longwave trough circling over the Four Corners area is expected to split, with its poleward section phasing into another trough traversing western Canada. This shift will pull a cold front into the Upper Midwest Saturday and orient it zonally on Sunday as the shortwave zips into eastern Canada. The Mid-Mississippi Valley will remain well south of the cold front over the weekend, and our temperature trends will reflect that. LREF probabilities of 1pm temperatures >69 degrees Saturday and Sunday both range from 75-100%, and the NBM max temperature spread for each day is only 3 degrees. The cold front is expected to finally push into the region on Tuesday, but cooler weather is not guaranteed especially for locations south of I-70. Guidance suggests that the front may be weakening as it arrives, and that it may become stationary before it clears the area. This would mean that less cool air would filter into less of the CWA and that the warm streak may continue through Tuesday. Confidence in this, or for any solution, is still very low given the timeframe in question. Again, the NBM max temperature spread reflects this well as it climbs to 10+ degrees on Tuesday and nearly 20 degrees on Wednesday.

Aviation

Issued at 1157 AM CDT Wed Oct 21 2026

Surface high pressure is located across eastern OH/ western PA with mid clouds approaching the region from the west. VFR conditions are forecast to persist through the afternoon into the evening. Another upper level wave will move across southern Canada, helping to retrograde the surface ridge axis back to the northwest late this evening. Winds at the TAF sites will slowly back from the northeast before decoupling. Thursday morning, another round of morning river valley fog appears likely as winds go calm. The greatest threat for restrictions in visibilities will be at KSUS, while slightly lower chances at KJEF and KCPS. As the sun rises, mixing will quickly commence bringing an end to the river valley fog. VFR Thursday with no precipitation expected.

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.