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WyomingReservoir, 3,600 acres, Platte County

Grayrocks Reservoir wind forecast

Grayrocks Reservoir, Wyoming
Photo: Tony Webster, CC BY 2.0

7-day outlook

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

  1. TodayOct 26

    3-6kt

    E, gusts 9

    High 49°F, rain 48%

    Use caution
  2. TueOct 27

    15-23kt

    WSW, gusts 36

    High 63°F, rain 1%

    Stay ashore
  3. WedOct 28

    5-10kt

    W, gusts 16

    High 64°F, rain 5%

    Good
  4. ThuOct 29

    2-5kt

    SE, gusts 12

    High 67°F, rain 0%

    Use caution
  5. FriOct 30

    1-6kt

    SE, gusts 17

    High 68°F, rain 17%

    Use caution
  6. SatOct 31

    2-3kt

    N, gusts 12

    High 65°F, rain 19%

    Light wind
  7. SunNov 1

    2-9kt

    SE, gusts 18

    High 63°F, rain 46%

    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 Grayrocks

Over the next 7 days on Grayrocks Reservoir, the windiest stretch looks like Tuesday, with gusts to about 36 kt. Saturday is the calmest day in the outlook, topping out near 3 kt.

Wednesday is the pick for sailing, and Thursday 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 Grayrocks, 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.

Grayrocks Reservoir forecast questions

What is the wind forecast for Grayrocks Reservoir this weekend?

In the National Weather Service forecast from October 26: Saturday: N wind 2 to 3 kt, gusts to 12 kt, high near 65°F. Sunday: SE wind 2 to 9 kt, gusts to 18 kt, high near 63°F. The live cards above always show the latest update.

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

Based on the National Weather Service forecast from October 26, Wednesday looks best, with W wind around 5 to 10 kt and gusts near 16 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

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