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WashingtonReservoir, 973 acres, Grant County

Billy Clapp Lake wind forecast

Billy Clapp Lake, Washington
Photo: United States Bureau of Reclamation, Public domain

7-day outlook

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

  1. TodayOct 26

    5-8kt

    ESE, gusts 11

    High 55°F, rain 39%

    Good
  2. TueOct 27

    4-12kt

    SW, gusts 19

    High 57°F, rain 6%

    Good
  3. WedOct 28

    8-13kt

    SSW, gusts 19

    High 52°F, rain 34%

    Good
  4. ThuOct 29

    6-9kt

    NE, gusts 14

    High 50°F, rain 34%

    Good
  5. FriOct 30

    4-8kt

    NNE, gusts 13

    High 48°F, rain 27%

    Good
  6. SatOct 31

    4-7kt

    N, gusts 11

    High 48°F, rain 6%

    Good
  7. SunNov 1

    4-7kt

    WNW, gusts 10

    High 49°F, rain 6%

    Good

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 Billy Clapp

Over the next 7 days on Billy Clapp Lake, the windiest stretch looks like Tuesday, with gusts to about 19 kt. Saturday is the calmest day in the outlook, topping out near 7 kt.

Wednesday is the pick for sailing, and Saturday 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 Billy Clapp, 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.

Billy Clapp Lake forecast questions

What is the wind forecast for Billy Clapp Lake this weekend?

In the National Weather Service forecast from October 26: Saturday: N wind 4 to 7 kt, gusts to 11 kt, high near 48°F. Sunday: WNW wind 4 to 7 kt, gusts to 10 kt, high near 49°F. The live cards above always show the latest update.

When is the best day to sail on Billy Clapp Lake this week?

Based on the National Weather Service forecast from October 26, Wednesday looks best, with SSW wind around 8 to 13 kt and gusts near 19 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

Where does the Billy Clapp 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 Billy Clapp is blown out, these are the closest alternatives. Tap through for their wind forecasts.