Anna, IL 62906 Weather

Union County5:00 PM CDT37.47°N, 89.22°W

Current conditions

Sunny
75°
Sunny
Feels like 74°
High 74°·Low 47°
WindN 3 mph
Humidity31%
Dew point43°
Pressure30.20 inHg
Visibility10 mi
Cloud cover2%
UV index0 Low
Sunrise7:11 AM
Sunset6:13 PM

Observed at Southern Illinois Airport · 1 hr ago

Forecast

10-day
  • This Afternoon

    Sunny. High near 74, with temperatures falling to around 72 in the afternoon. North northeast wind around 2 mph.

  • Tonight

    Areas of fog after midnight. Clear, with a low around 47. North northeast wind around 1 mph.

  • Thursday

    Patchy fog before 9am. Sunny. High near 75, with temperatures falling to around 73 in the afternoon. North northeast wind 1 to 5 mph.

National Weather Service forecast updated 3 hrs ago.

  1. Now Sunny 72°
  2. 6 PM Clear 69°
  3. 7 PM Clear 64°
  4. 8 PM Clear 57°
  5. 9 PM Clear 55°
  6. 10 PM Clear 53°
  7. 11 PM Clear 52°
  8. Thu12 AM Patchy Fog 51°
  9. 1 AM Patchy Fog 50°
  10. 2 AM Areas Of Fog 49°
  11. 3 AM Areas Of Fog 49°
  12. 4 AM Patchy Fog 48°
  13. 5 AM Patchy Fog 48°
  14. 6 AM Patchy Fog 47°
  15. 7 AM Patchy Fog 47°
  16. 8 AM Patchy Fog 49°
  17. 9 AM Sunny 55°
  18. 10 AM Sunny 64°
  19. 11 AM Sunny 68°
  20. 12 PM Sunny 71°
  21. 1 PM Sunny 74°
  22. 2 PM Sunny 75°
  23. 3 PM Sunny 75°
  24. 4 PM Sunny 75°

10-day forecast

Details
  1. TodayOct 21 Sunny Sunny47°74°
  2. ThuOct 22 Patchy Fog then Sunny Patchy Fog then Sunny47°75°
  3. FriOct 23 Sunny Sunny45°74°
  4. SatOct 24 Mostly Sunny Mostly Sunny47°75°
  5. SunOct 25 Mostly Sunny Mostly Sunny47°75°
  6. MonOct 26 Partly Sunny Partly Sunny48°75°
  7. TueOct 27 Partly Sunny Partly Sunny47°73°
  8. WedOct 28 Mostly sunny Mostly sunny54°78°
  9. ThuOct 29 Cloudy Cloudy1.06 in50°79°
  10. FriOct 30 Partly cloudy Partly cloudy46°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
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Air quality

51
Moderate
Ozone

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Farrar, MO reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:11 AM
Sunset 6:13 PM
Daylight 11 h 1 min (−2 min 16 s tomorrow)
Waxing Gibbous · 80% lit
Moonrise 3:47 PM Moonset 2:21 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low71° / 46°
Record high89° (1908)
Record low24° (1952)
Wettest1.46 in (1919)
Month to date1.70 in (normal 2.47 in)

Anna 4 N, records since 1887. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

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

Key Messages

- Areas of dense fog will continue late overnight into the morning hours near bodies of water.

- Generally clear and temperate conditions will remain through the weekend.

- A small chance of a shower exists early next week, though confidence is low.

Discussion

Issued at 1219 PM CDT Wed Oct 21 2026

An UL omega block has been established, with our CWA on the eastern edge of the 250 mb ridge as of 16z. As such, high surface pressure will be dominant until Monday at the earliest, leaving generally cloudless skies and seasonable, if not slightly above average, temperatures. Tuesday, long-range guidance suggests weak FROPA associated with the easterly progression of the UL trough, but vorticity and frontogenesis values are low, and 250 mb flow is only weakly perturbed. GFS and ECMWF 500 mb relative humidity prog <40%, so chances of widespread precipitation are minimal. A brief shower or two cannot be ruled out though, especially Tuesday morning in western parts of our coverage area.

Given weak surface flow, patchy areas of dense radiation fog are possible near bodies of water and in surrounding low-lying areas overnight through the morning. Widely scattered clouds tomorrow morning will not hinder the suns ability to quickly erode this fog, so expect the fog threat to be eliminated by 15z tomorrow.

Aviation

Issued at 1209 PM CDT Wed Oct 21 2026

High pressure will continue to bring calm or very light NE winds through the forecast period. Low-lying river valley fog development is expected again during the 11-13z Thursday period. Included this in the CGI and OWB TAFs where impacts are most likely. Otherwise, VFR conditions are expected.

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.