Portland, TN Weather

Sumner County4:52 AM CDT36.58°N, 86.52°WElevation 801 ft

Current conditions

Patchy Fog
47°
Patchy Fog
Feels like 47°
High 74°·Low 45° tonight
WindCalm
Humidity96%
Dew point46°
Cloud cover10%
Sunrise7:03 AM
Sunset5:58 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Saturday Night

    Patchy fog after 4am. Mostly clear, with a low around 45. Southeast wind around 0 mph.

  • Sunday

    Sunny, with a high near 74. Southwest wind 0 to 5 mph.

  • Sunday Night

    Mostly clear, with a low around 45. East southeast wind around 0 mph.

National Weather Service forecast updated 2 days ago.

Hourly

Hourly forecast
  1. Now Patchy Fog 47°
  2. 5 AM Patchy Fog 46°
  3. 6 AM Sunny 45°
  4. 7 AM Sunny 46°
  5. 8 AM Sunny 51°
  6. 9 AM Sunny 56°
  7. 10 AM Sunny 62°
  8. 11 AM Sunny 66°
  9. 12 PM Sunny 69°
  10. 1 PM Sunny 71°
  11. 2 PM Sunny 73°
  12. 3 PM Sunny 74°
  13. 4 PM Sunny 74°
  14. 5 PM Sunny 71°
  15. 6 PM Mostly Clear 67°
  16. 7 PM Mostly Clear 63°
  17. 8 PM Mostly Clear 60°
  18. 9 PM Mostly Clear 57°
  19. 10 PM Mostly Clear 54°
  20. 11 PM Mostly Clear 52°
  21. Mon12 AM Mostly Clear 51°
  22. 1 AM Partly Cloudy 50°
  23. 2 AM Partly Cloudy 49°
  24. 3 AM Partly Cloudy 48°

10-day forecast

Details
  1. ThuOct 22 Sunny Sunny43°75°
  2. FriOct 23 Sunny Sunny44°74°
  3. SatOct 24 Sunny Sunny45°75°
  4. TodayOct 25 Sunny Sunny45°74°
  5. MonOct 26 Mostly Sunny Mostly Sunny45°73°
  6. TueOct 27 Partly Sunny Partly Sunny48°73°
  7. WedOct 28 Mostly Sunny Mostly Sunny46°72°
  8. ThuOct 29 Partly cloudy Partly cloudy51°77°
  9. FriOct 30 Sunny Sunny42°59°
  10. SatOct 31 Cloudy Cloudy40°67°

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 Tennessee

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Air quality

59
Moderate
Fine particles (PM2.5)

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

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 7:03 AM
Sunset 5:58 PM
Daylight 10 h 55 min (−2 min 9 s tomorrow)
Waxing Gibbous · 99% lit
Moonrise 5:20 PM Moonset 6:26 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low68° / 44°
Month to date1.96 in (normal 2.88 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 16 hrs ago

Key Messages

Updated at 1223 PM CDT Sat Oct 24 2026

- Mild, sunny days and cool, clear nights will continue through the end of the upcoming work week.

- No rain is expected through the upcoming week, but the pattern begins to shift next weekend.

- Drought conditions will continue to worsen.

Short Term

(Rest of today through Sunday) Issued at 1055 AM CDT Sat Oct 24 2026

Another cool, dry, and sunny day is underway across Middle TN. This morning's upper air soundings placed a highly amplified midlevel ridge over the ArkLATex region, leading to northerly flow aloft for the TN Valley. This is part of the reason we have such pleasant humidity values; cool, dry air is being advected along the ridge from the Central Plains. Expect a persistence forecast through the weekend as this same pattern will set up again tomorrow.

Long Term

(Sunday Night through next Saturday) Issued at 1055 AM CDT Sat Oct 24 2026

The majority of the week is expected to feature broad ridging over the eastern CONUS, which will keep temperatures 5-10 degrees above normal. Despite this abnormally warm regime, it will still feel quite pleasant to the average person. "Normal" temperatures for this time of year are around 70 degrees in the afternoon, so temperatures in the mid to upper 70s is anomalous but not uncomfortably warm. Humidity remains low through the week as well. With no rain in sight through the end of the week, areawide drought conditions are expected to worsen.

You'll have to look beyond the current forecast period for signs of a pattern shift. Long range ensembles finally hint at a transition to more to a troughing regime starting next Saturday (Halloween). LREF probabilities of measurable rainfall (0.01") jump up to 30-40% Saturday night into Sunday morning. This will be something to keep an eye on for trick-or-treating night. Several solutions are much later with the onset of precip on Sunday, but worth keeping an eye on for the few outliers Saturday afternoon.

Aviation

(18Z TAFS) Issued at 1223 PM CDT Sat Oct 24 2026

All is quiet across Middle TN with clear skies and light winds. A few high clouds will move in from the west tonight, but VFR conditions will prevail through the period.

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.