Skip to content
lakeglance

TennesseeReservoir, Warren County

Great Falls Lake wind forecast

Great Falls Lake, Tennessee
Photo: Tennessee Valley Authority, Public domain

7-day outlook

Daylight hours, 8am to 7pm local time. Wind in knots.

  1. TodayOct 26

    0-3kt

    NNE, gusts 7

    High 73°F, rain 0%

    Light wind
  2. TueOct 27

    0kt

    Variable, gusts 5

    High 77°F, rain 0%

    Light wind
  3. WedOct 28

    0-3kt

    SSE, gusts 8

    High 75°F, rain 0%

    Light wind
  4. ThuOct 29

    0-1kt

    SSE, gusts 5

    High 77°F, rain 0%

    Light wind
  5. FriOct 30

    0-2kt

    ENE, gusts 6

    High 78°F, rain 1%

    Light wind
  6. SatOct 31

    0-5kt

    SSE, gusts 10

    High 75°F, rain 24%

    Use caution
  7. SunNov 1

    2-8kt

    SE, gusts 13

    High 73°F, rain 63%

    Use caution

Hour by hour, next 3 days

Wind and gusts0 to 30+ ktScoreGood, caution, stay ashoreNightBest windowArrows point where the wind blows to.

This week on Great Falls

Over the next 7 days on Great Falls Lake, the windiest stretch looks like Sunday, with gusts to about 13 kt. Tuesday is the calmest day in the outlook, topping out near 0 kt.

Sunday is the pick for sailing, and Monday looks best for kayaks and paddleboards. Mornings are usually calmer than afternoons, so check the hourly strip for the exact window.

Reading a lake wind forecast

Sustained wind is the average over a couple of minutes; gusts are the short peaks. On inland water the gap between the two matters as much as the average. A steady 12 kt is a pleasant sail, while 8 kt gusting 20 kt knocks small boats flat and tires out paddlers.

On a lake the size of Great Falls, waves stay modest, but nearby hills, trees and buildings bend the wind. Expect shifts and puffs, especially close to shore, and treat the forecast speed as an average across open water.

The National Weather Service forecast covers a 2.5 km grid, so local effects like a sea breeze off a big lake, a cold front or afternoon thunderstorms can arrive earlier or stronger than shown. Check the forecast again on the morning you go, and keep an eye on small craft advisories.

Great Falls Lake forecast questions

What is the wind forecast for Great Falls Lake this weekend?

In the National Weather Service forecast from October 26: Saturday: SSE wind 0 to 5 kt, gusts to 10 kt, high near 75°F. Sunday: SE wind 2 to 8 kt, gusts to 13 kt, high near 73°F, 63% chance of rain. The live cards above always show the latest update.

When is the best day to sail on Great Falls Lake this week?

Based on the National Weather Service forecast from October 26, Sunday looks best, with SE wind around 2 to 8 kt and gusts near 13 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

Where does the Great Falls Lake wind forecast come from?

From the National Weather Service gridded forecast for the 2.5 km cell over the lake. It is the same forecast local NWS offices use, updated several times a day. We convert wind to knots and add our own go or no-go call for each activity.

What wind is too strong for a kayak or paddleboard?

We flag paddling as risky once sustained wind passes about 8 kt or gusts pass 12 kt, and advise staying ashore above 12 kt sustained or 18 kt gusts. Offshore wind is the most dangerous because it pushes you away from the launch.

Nearby lakes

If Great Falls is blown out, these are the closest alternatives. Tap through for their wind forecasts.