Portland, TN 37148 Weather

Sumner County1:01 AM CDT36.57°N, 86.51°W

Current conditions

Clear
48°
Clear
Feels like 48°
High 73°·Low 43° tonight
WindCalm
Humidity93%
Dew point46°
Pressure30.25 inHg
Visibility10.0 mi
Cloud cover2%
UV index0 Low
Sunrise6:59 AM
Sunset6:03 PM

Observed at Portland Municipal Airport · 1 hr ago

Forecast

10-day
  • Tonight

    Clear, with a low around 43. Northeast wind 0 to 5 mph.

  • Wednesday

    Sunny, with a high near 73. Northeast wind 0 to 5 mph.

  • Wednesday Night

    Clear, with a low around 45. North northeast wind 0 to 5 mph.

National Weather Service forecast updated 11 hrs ago.

  1. Now Clear 48°
  2. 2 AM Clear 47°
  3. 3 AM Clear 47°
  4. 4 AM Clear 46°
  5. 5 AM Clear 45°
  6. 6 AM Sunny 45°
  7. 7 AM Sunny 44°
  8. 8 AM Sunny 46°
  9. 9 AM Sunny 51°
  10. 10 AM Sunny 60°
  11. 11 AM Sunny 64°
  12. 12 PM Sunny 69°
  13. 1 PM Sunny 71°
  14. 2 PM Sunny 72°
  15. 3 PM Sunny 73°
  16. 4 PM Sunny 72°
  17. 5 PM Sunny 71°
  18. 6 PM Clear 67°
  19. 7 PM Clear 59°
  20. 8 PM Clear 56°
  21. 9 PM Clear 54°
  22. 10 PM Clear 52°
  23. 11 PM Clear 50°
  24. Thu12 AM Clear 49°

10-day forecast

Details
  1. TonightOct 20 Clear Clear43°
  2. TodayOct 21 Sunny Sunny45°73°
  3. ThuOct 22 Sunny Sunny45°73°
  4. FriOct 23 Sunny Sunny46°73°
  5. SatOct 24 Sunny Sunny47°74°
  6. SunOct 25 Sunny Sunny47°73°
  7. MonOct 26 Mostly Sunny Mostly Sunny48°74°
  8. TueOct 27 Mostly Sunny Mostly Sunny71°
  9. WedOct 28 Light showers Light showers0.06 in51°69°
  10. ThuOct 29 Mostly sunny Mostly sunny44°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 Tennessee

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Air quality

29
Good
Fine particles (PM2.5)

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

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

Sun & moon

Sunrise 6:59 AM
Sunset 6:03 PM
Daylight 11 h 3 min (−2 min 11 s tomorrow)
Waxing Gibbous · 75% lit
Moonrise 3:35 PM Moonset 2:11 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low70° / 46°
Month to date1.96 in (normal 2.44 in)

Portland Sewage Plant, records since 1955. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in OHX, issued 1 hr ago

Key Messages

Updated at 1056 PM CDT Tue Oct 20 2026

- Mild, sunny days and cool, clear nights will continue for the foreseeable future.

- No rain is expected for at least the next 7 days, and likely longer.

- Drought conditions are going to worsen.

Short Term

(Tonight through Thursday Night) Issued at 1056 PM CDT Tue Oct 20 2026

A surface ridge remains situated to the north and west of Middle Tennessee this evening, and will take its time sliding across the region during the next couple of days. The atmosphere will remain dry and stable, with abundant sunshine and no rain in sight.

Long Term

(Friday through next Wednesday) Issued at 1056 PM CDT Tue Oct 20 2026

The arid conditions are unlikely to improve any time soon. Indeed, it is unclear when our next rain chances might occur. The latest NBM has scant rain chances across the mid state even out through day 10. Temperatures will remain very stable throughout the 7-day forecast, with cool nights and mild afternoons. Unfortunately, the drought conditions will continue to worsen.

Aviation

(00Z TAFS) Issued at 558 PM CDT Tue Oct 20 2026

VFR conditions through the TAF period with mainly clear skies. Winds will be light under 5 knots out of the north.

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.