Murphysboro, IL Weather

Jackson County3:23 AM CDT37.76°N, 89.34°WElevation 420 ft

Current conditions

Clear
45°
Clear
Feels like 45°
High 74°·Low 45° tonight
WindCalm
Humidity100%
Dew point45°
Pressure30.26 inHg
Visibility7.0 mi
Cloud cover15%
UV index0 Low
Sunrise7:12 AM
Sunset6:13 PM

Observed at Southern Illinois Airport · 28 min ago

Forecast

10-day

  • Tonight

    Areas of fog after midnight. Mostly clear, with a low around 45. Wind around 0 mph.

  • Wednesday

    Areas of fog before 8am. Sunny. High near 74, with temperatures falling to around 72 in the afternoon. North wind around 2 mph.

  • Wednesday Night

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

National Weather Service forecast updated 4 hrs ago.

Hourly

Hourly forecast
  1. Now Areas Of Fog 47°
  2. 4 AM Areas Of Fog 46°
  3. 5 AM Areas Of Fog 45°
  4. 6 AM Areas Of Fog 45°
  5. 7 AM Areas Of Fog 45°
  6. 8 AM Sunny 45°
  7. 9 AM Sunny 50°
  8. 10 AM Sunny 58°
  9. 11 AM Sunny 63°
  10. 12 PM Sunny 68°
  11. 1 PM Sunny 72°
  12. 2 PM Sunny 73°
  13. 3 PM Sunny 73°
  14. 4 PM Sunny 74°
  15. 5 PM Sunny 72°
  16. 6 PM Mostly Clear 69°
  17. 7 PM Mostly Clear 65°
  18. 8 PM Mostly Clear 59°
  19. 9 PM Mostly Clear 57°
  20. 10 PM Mostly Clear 55°
  21. 11 PM Mostly Clear 53°
  22. Thu12 AM Mostly Clear 52°
  23. 1 AM Clear 51°
  24. 2 AM Mostly Clear 50°

10-day forecast

Details
  1. TonightOct 20 Mostly Clear then Areas Of Fog Mostly Clear then Areas Of Fog45°
  2. TodayOct 21 Areas Of Fog then Sunny Areas Of Fog then Sunny46°74°
  3. ThuOct 22 Sunny Sunny47°76°
  4. FriOct 23 Sunny Sunny46°74°
  5. SatOct 24 Mostly Sunny Mostly Sunny48°75°
  6. SunOct 25 Mostly Sunny Mostly Sunny49°77°
  7. MonOct 26 Mostly Sunny Mostly Sunny49°75°
  8. TueOct 27 Partly Sunny Partly Sunny69°
  9. WedOct 28 Cloudy Cloudy54°65°
  10. ThuOct 29 Cloudy Cloudy49°65°

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

Radar

Full map
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Weather news in Illinois

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Air quality

40
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Farrar, MO reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:12 AM
Sunset 6:13 PM
Daylight 11 h 1 min (−2 min 18 s tomorrow)
Waxing Gibbous · 75% lit
Moonrise 3:47 PM Moonset 2:21 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low68° / 43°
Record high89° (1963)
Record low18° (1952)
Wettest2.26 in (1945)
Month to date1.00 in (normal 2.23 in)

Carbondale Area, records since 1898. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PAH, issued 3 hrs ago

Key Messages

- Patchy fog, potentially dense will continue to be possible this morning near bodies of water.

- Temperatures will remain near to slightly above normal over the next seven days.

- A 15% chance of a sprinkle or isolated rain shower cannot be ruled out on Tuesday afternoon.

Discussion

Issued at 1216 AM CDT Wed Oct 21 2026

A ridge of high pressure will continue to provide abundant sunshine with ample dry weather conditions over the next seven days. The H5 ridge axis nudges more east on Saturday with heights peaking at 588 dm. This translates to daily light northeasterly winds shifting southerly on Saturday, only resulting in a subtle increase in WAA. Daily temperatures will remain near to slightly above normal in the mid to upper 70s, with lows ranging from the mid to upper 40s. Otherwise, patchy fog near bodies of water will remain possible this morning. The only other weather concern is a 15% chance of a sprinkle or isolated rain shower on Tuesday afternoon as a cold front washes out over the FA. While a 0% PoP is currently progged by the NBM, model ensembles support at least a slight mention.

Aviation

Issued at 505 PM CDT Tue Oct 20 2026

Shallow ground fog will again be possible early Wednesday morning, primarily near bodies of water. CGI is most likely terminal to be impacted. Otherwise VFR conditions with calm or very light NE winds and only a few high clouds (primarily in the west).

Pah Watches

IL...None. MO...None. IN...None. KY...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.