Loudon, TN Weather

Loudon County2:29 AM EDT35.73°N, 84.33°WElevation 837 ft

Current conditions

Clear
52°
Clear
Feels like 52°
High 71°·Low 42° tonight
WindN 5 mph
Humidity76%
Dew point45°
Visibility10 mi
Cloud cover9%
UV index0 Low
Sunrise7:52 AM
Sunset6:53 PM

Observed at Knoxville, McGhee Tyson Airport · 1 hr ago

Forecast

10-day

  • Tonight

    Patchy fog after 5am. Mostly clear. Low around 42, with temperatures rising to around 45 overnight. Northeast wind around 5 mph.

  • Friday

    Patchy fog before 9am. Sunny, with a high near 71. Northeast wind 0 to 5 mph.

  • Friday Night

    Clear. Low around 41, with temperatures rising to around 44 overnight. Northeast wind around 0 mph.

National Weather Service forecast updated 7 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 48°
  2. 3 AM Mostly Clear 48°
  3. 4 AM Mostly Clear 47°
  4. 5 AM Patchy Fog 45°
  5. 6 AM Patchy Fog 44°
  6. 7 AM Patchy Fog 43°
  7. 8 AM Patchy Fog 43°
  8. 9 AM Sunny 46°
  9. 10 AM Sunny 53°
  10. 11 AM Sunny 58°
  11. 12 PM Sunny 62°
  12. 1 PM Sunny 66°
  13. 2 PM Sunny 69°
  14. 3 PM Sunny 70°
  15. 4 PM Sunny 71°
  16. 5 PM Sunny 71°
  17. 6 PM Clear 69°
  18. 7 PM Clear 64°
  19. 8 PM Clear 60°
  20. 9 PM Clear 54°
  21. 10 PM Clear 51°
  22. 11 PM Clear 50°
  23. Sat12 AM Clear 48°
  24. 1 AM Clear 47°

10-day forecast

Details
  1. TonightOct 22 Mostly Clear then Patchy Fog Mostly Clear then Patchy Fog42°
  2. TodayOct 23 Patchy Fog then Sunny Patchy Fog then Sunny41°71°
  3. SatOct 24 Sunny Sunny42°71°
  4. SunOct 25 Sunny Sunny44°72°
  5. MonOct 26 Sunny Sunny45°72°
  6. TueOct 27 Mostly Sunny Mostly Sunny47°73°
  7. WedOct 28 Mostly Sunny Mostly Sunny47°73°
  8. ThuOct 29 Mostly Sunny Mostly Sunny74°
  9. FriOct 30 Partly cloudy Partly cloudy55°75°
  10. SatOct 31 Cloudy Cloudy0.31 in55°77°

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 near Loudon

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Air quality

45
Good
Ozone

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

Forecast

  • FriModerate (51)
  • SatModerate (51)

Great Smoky Mtns. Natl. Park - TN, TN reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:52 AM
Sunset 6:53 PM
Daylight 11 h 1 min (−2 min 6 s tomorrow)
Waxing Gibbous · 90% lit
Moonrise 5:15 PM Moonset 5:06 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low69° / 46°
Month to date2.59 in (normal 1.96 in)

Knoxville Ap, records since 1910. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in MRX, issued 7 hrs ago

Key Messages

Updated at 709 PM EDT Thu Oct 22 2026

- Early morning patchy fog potential continues near rivers and lakes.

- Dry weather dominates the forecast period, with cool mornings and pleasant afternoons each day. Afternoon relative humidity will remain on the lower side as well, but light winds will prevail.

Discussion

Issued at 131 PM EDT Thu Oct 22 2026

Clear skies have taken over across CWA after a little fog was seen earlier this morning near TRI and across our southern counties. High pressure continues to dominate our forecast for the foreseeable future. This spells temperatures a degree or two above normal during the afternoons and cooler mornings with patchy fog. The biggest challenge over the next several days will be dew points and dry air aloft mixing down to the surface pushing RH values lower than what NBM guidance would otherwise suggest. As far as fire weather goes, the saving grace of light winds throughout the period will mitigate any great concerns. As dry as it is and has been, we'd be having a widespread fire danger if it wasn't for these light winds.

Where's all the precipitation? Well, it currently resides out west, especially over the Four Corners region and is being blocked from getting to us by this high pressure over the center of the country. Long range guidance would suggest that this blocking pattern will start to break down by the middle of next week with our first chance of rain potentially getting to us by next weekend -- just in time for Halloween. While that sounds ghoulish, that solution is only in the GFS. The Euro keeps us dry right through Halloween weekend. For now, enjoy this consistently comfortable weather. It's bound to end eventually.

Aviation

(00Z TAFS) Issued at 709 PM EDT Thu Oct 22 2026

VFR conditions will continue with clear or nearly clear skies throughout this TAF cycle. The only exception is the possibility of brief morning fog near TRI. Northeasterly winds will be light.

Preliminary Point Temps

Chattanooga Airport, TN 46 73 46 72 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 43 72 41 72 / 0 0 0 0 Oak Ridge, TN 44 71 41 73 / 0 0 0 0 Tri Cities Airport, TN 37 70 38 69 / 0 0 0 0

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.