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Official National Weather Service (NWS) point forecast and real-time wind conditions for Great Falls Lake (Tennessee). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 69°F · Low 59°F
Peak gusts: 3 mph · Lake surface chop expected
Humidity: 95% · Barometer: 30.00 inHg
USGS water monitoring available for Great Falls Lake.
Excellent for boating (90/100), from 4 available inputs. Supporting this: Wind 0 mph from the west. Gusts to 6 mph. Working against it: 76% chance of precipitation is likely. 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.
Fair for fishing (68/100), from 5 available inputs. Supporting this: Wind 0 mph from the west. Sky is overcast (94% cloud cover). Working against it: 76% chance of precipitation is likely. 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.
Excellent for kayaking (91/100), from 5 available inputs. Supporting this: Wind 0 mph from the west. Gusts to 6 mph. Working against it: 76% chance of precipitation is likely. 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 0 mph from the west. Working against it: 76% chance of precipitation is likely. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 1 AM | 63°F | 0 mph | — | ⚡ 6 mph | 76% | Rain Showers |
| 2 AM | 62°F | 0 mph | — | ⚡ 6 mph | 40% | Chance Rain Showers |
| 3 AM | 61°F | 0 mph | — | ⚡ 7 mph | 23% | Slight Chance Rain Showers |
| 4 AM | 60°F | 0 mph | — | ⚡ 6 mph | 27% | Chance Rain Showers |
| 5 AM | 59°F | 0 mph | — | ⚡ 6 mph | 29% | Chance Rain Showers |
| 6 AM | 60°F | 0 mph | — | ⚡ 7 mph | 28% | Chance Rain Showers |
| 7 AM | 59°F | 0 mph | — | ⚡ 7 mph | 36% | Chance Rain Showers |
| 8 AM | 60°F | 0 mph | — | ⚡ 9 mph | 30% | Chance Rain Showers |
| 9 AM | 62°F | 5 mph | W | ⚡ 12 mph | 39% | Chance Rain Showers |
| 10 AM | 64°F | 5 mph | W | ⚡ 13 mph | 44% | Chance Rain Showers |
| 11 AM | 65°F | 10 mph | W | ⚡ 15 mph | 58% | Rain Showers Likely |
| 12 PM | 66°F | 10 mph | W | ⚡ 16 mph | 52% | Chance Rain Showers |
| 1 PM | 66°F | 10 mph | W | ⚡ 17 mph | 39% | Chance Rain Showers |
| 2 PM | 68°F | 10 mph | W | ⚡ 18 mph | 30% | Chance Rain Showers |
| 3 PM | 68°F | 10 mph | W | ⚡ 18 mph | 30% | Chance Rain Showers |
| 4 PM | 68°F | 10 mph | W | ⚡ 17 mph | 24% | Slight Chance Rain Showers |
| 5 PM | 69°F | 10 mph | W | ⚡ 15 mph | 26% | Chance Rain Showers |
| 6 PM | 68°F | 5 mph | W | ⚡ 14 mph | 17% | Slight Chance Rain Showers |
| 7 PM | 66°F | 5 mph | W | ⚡ 13 mph | 3% | Mostly Cloudy |
| 8 PM | 64°F | 0 mph | — | ⚡ 10 mph | 1% | Partly Cloudy |
| 9 PM | 63°F | 0 mph | — | ⚡ 8 mph | 0% | Partly Cloudy |
| 10 PM | 62°F | 0 mph | — | ⚡ 7 mph | 0% | Patchy Fog |
| 11 PM | 61°F | 0 mph | — | ⚡ 6 mph | 0% | Areas Of Fog |
| 12 AM | 61°F | 0 mph | — | ⚡ 5 mph | 0% | Areas Of Fog |
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.
Rain. High near 65°F. Wind around 10 mph with gusts up to 20 mph.
Rain. Low around 60°F.
Overcast. High near 80°F. Wind around 6 mph with gusts up to 14 mph.
Overcast. Low around 56°F.
Clear Sky. High near 84°F. Wind around 8 mph with gusts up to 11 mph.
Clear Sky. Low around 62°F.
Overcast. High near 86°F. Wind around 8 mph with gusts up to 13 mph.
Overcast. Low around 64°F.
Overcast. High near 86°F. Wind around 7 mph with gusts up to 13 mph.
Overcast. Low around 67°F.
Drizzle. High near 83°F. Wind around 14 mph with gusts up to 26 mph.
Drizzle. Low around 52°F.
Overcast. High near 50°F. Wind around 15 mph with gusts up to 26 mph.
Overcast. Low around 36°F.
Great Falls Lake currently reports 65°F with wind velocity near 3 mph from the W. 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 Great Falls 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 OHX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Great Falls 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 Great Falls Lake Water Level & Temperature page.
View Great Falls Lake Water Level & Temperature →