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Official National Weather Service (NWS) point forecast and real-time wind conditions for South Holston Lake (Tennessee). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 68°F · Low 61°F
Peak gusts: 20 mph · Lake surface chop expected
Humidity: 89% · Barometer: 29.97 inHg
USGS water monitoring available for South Holston Lake.
Good for boating (78/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the west. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for fishing (78/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. Afternoon hours (16:00 local). Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Good for kayaking (79/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. No active official alerts for this lake. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: No active official alerts for this lake. Wind 10 mph from the west. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 4 PM | 68°F | 10 mph | W | ⚡ 20 mph | 44% | Chance Rain Showers |
| 5 PM | 68°F | 15 mph | W | ⚡ 21 mph | 71% | Rain Showers Likely |
| 6 PM | 67°F | 15 mph | W | ⚡ 22 mph | 75% | Rain Showers Likely |
| 7 PM | 64°F | 15 mph | SW | ⚡ 22 mph | 73% | Rain Showers Likely |
| 8 PM | 64°F | 15 mph | W | ⚡ 22 mph | 75% | Rain Showers |
| 9 PM | 64°F | 15 mph | W | ⚡ 23 mph | 89% | Rain Showers |
| 10 PM | 64°F | 15 mph | W | ⚡ 23 mph | 74% | Rain Showers Likely |
| 11 PM | 63°F | 15 mph | W | ⚡ 22 mph | 60% | Rain Showers Likely |
| 12 AM | 63°F | 10 mph | W | ⚡ 21 mph | 53% | Chance Rain Showers |
| 1 AM | 63°F | 10 mph | W | ⚡ 20 mph | 59% | Rain Showers Likely |
| 2 AM | 64°F | 10 mph | W | ⚡ 18 mph | 56% | Rain Showers Likely |
| 3 AM | 64°F | 10 mph | W | ⚡ 20 mph | 57% | Rain Showers Likely |
| 4 AM | 63°F | 15 mph | W | ⚡ 20 mph | 38% | Chance Rain Showers |
| 5 AM | 63°F | 15 mph | W | ⚡ 20 mph | 39% | Chance Rain Showers |
| 6 AM | 62°F | 10 mph | W | ⚡ 18 mph | 35% | Chance Rain Showers |
| 7 AM | 61°F | 10 mph | W | ⚡ 16 mph | 20% | Slight Chance Rain Showers |
| 8 AM | 63°F | 10 mph | W | ⚡ 16 mph | 16% | Slight Chance Rain Showers |
| 9 AM | 63°F | 10 mph | W | ⚡ 15 mph | 11% | Mostly Cloudy |
| 10 AM | 64°F | 10 mph | W | ⚡ 14 mph | 7% | Cloudy |
| 11 AM | 66°F | 10 mph | W | ⚡ 14 mph | 0% | Cloudy |
| 12 PM | 68°F | 10 mph | W | ⚡ 14 mph | 0% | Mostly Cloudy |
| 1 PM | 71°F | 10 mph | W | ⚡ 13 mph | 0% | Mostly Cloudy |
| 2 PM | 73°F | 5 mph | W | ⚡ 13 mph | 0% | Partly Sunny |
| 3 PM | 73°F | 5 mph | NW | ⚡ 12 mph | 0% | Mostly Sunny |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
A chance of rain showers. Mostly cloudy. High near 73, with temperatures falling to around 68 in the afternoon. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Rain showers. Cloudy, with a low around 61. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 10am. Mostly cloudy, with a high near 74. Northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 58. South wind 0 to 5 mph.
Sunny, with a high near 79. Southwest wind 0 to 10 mph.
Mostly clear, with a low around 61. Southwest wind 0 to 5 mph.
Sunny, with a high near 80. Southwest wind around 5 mph.
Mostly clear, with a low around 62.
Mostly sunny, with a high near 80.
A slight chance of rain showers after 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
A chance of rain showers. Mostly sunny, with a high near 75. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
A slight chance of rain showers before 8am. Partly sunny, with a high near 55. Chance of precipitation is 20%.
Mostly clear, with a low around 35.
South Holston Lake currently reports 63°F with wind velocity near 11 mph from the SW. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At South Holston Lake and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO MRX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for South Holston Lake without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated South Holston Lake Water Level & Temperature page.
View South Holston Lake Water Level & Temperature →