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MontanaReservoir, 4,925 acres, Beaverhead County

Clark Canyon Reservoir wind forecast

Clark Canyon Reservoir, Montana
Photo: Forest Service Northern Region from Missoula, MT, USA, Public domain

7-day outlook

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

  1. TodayOct 26

    5-18kt

    SSE, gusts 26

    High 50°F, rain 78%

    Stay ashore
  2. TueOct 27

    7-10kt

    SSW, gusts 18

    High 42°F, rain 3%

    Good
  3. WedOct 28

    8-13kt

    S, gusts 20

    High 44°F, rain 1%

    Good
  4. ThuOct 29

    7-10kt

    SSE, gusts 15

    High 48°F, rain 1%

    Good
  5. FriOct 30

    4-7kt

    SSE, gusts 13

    High 47°F, rain 35%

    Good
  6. SatOct 31

    2-5kt

    SSE, gusts 10

    High 45°F, rain 39%

    Use caution
  7. SunNov 1

    3-4kt

    SW, gusts 9

    High 43°F, rain 36%

    Light wind

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 Clark Canyon

Over the next 7 days on Clark Canyon Reservoir, the windiest stretch looks like Monday, with gusts to about 26 kt. Sunday is the calmest day in the outlook, topping out near 4 kt.

Thursday is the pick for sailing, and Sunday 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 Clark Canyon, 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.

Clark Canyon Reservoir forecast questions

What is the wind forecast for Clark Canyon Reservoir this weekend?

In the National Weather Service forecast from October 26: Saturday: SSE wind 2 to 5 kt, gusts to 10 kt, high near 45°F. Sunday: SW wind 3 to 4 kt, gusts to 9 kt, high near 43°F. The live cards above always show the latest update.

When is the best day to sail on Clark Canyon Reservoir this week?

Based on the National Weather Service forecast from October 26, Thursday looks best, with SSE wind around 7 to 10 kt and gusts near 15 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

Where does the Clark Canyon Reservoir 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 Clark Canyon is blown out, these are the closest alternatives. Tap through for their wind forecasts.