IdahoReservoir, 6,190 acres, Fremont County
Henrys Lake wind forecast

7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
TodayOct 26
2-7kt
SSE, gusts 16
High 44°F, rain 53%
Use caution -
TueOct 27
6-15kt
SSW, gusts 20
High 35°F, rain 51%
Good -
WedOct 28
5-10kt
SSW, gusts 20
High 37°F, rain 4%
Good -
ThuOct 29
2-6kt
S, gusts 16
High 42°F, rain 23%
Use caution -
FriOct 30
2-4kt
SSE, gusts 13
High 42°F, rain 55%
Light wind -
SatOct 31
2kt
SSE, gusts 9
High 41°F, rain 61%
Light wind -
SunNov 1
2kt
SSW, gusts 10
High 41°F, rain 49%
Light wind
Hour by hour, next 3 days
This week on Henrys
Over the next 7 days on Henrys Lake, the windiest stretch looks like Tuesday, with gusts to about 20 kt. Saturday is the calmest day in the outlook, topping out near 2 kt.
Tuesday 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 Henrys, 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.
Henrys Lake forecast questions
What is the wind forecast for Henrys Lake this weekend?
In the National Weather Service forecast from October 26: Saturday: SSE wind 2 kt, gusts to 9 kt, high near 41°F, 61% chance of rain. Sunday: SSW wind 2 kt, gusts to 10 kt, high near 41°F. The live cards above always show the latest update.
When is the best day to sail on Henrys Lake this week?
Based on the National Weather Service forecast from October 26, Tuesday looks best, with SSW wind around 6 to 15 kt and gusts near 20 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Henrys 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 Henrys is blown out, these are the closest alternatives. Tap through for their wind forecasts.
- Island Park ReservoirReservoir, 7,550 ac, Idaho16 mi
- Hebgen LakeReservoir, 12,407 ac, Montana16 mi
- Upper Red Rock LakeNatural lake, 2,947 ac, Montana16 mi
- Lower Red Rock LakeNatural lake, 2,218 ac, Montana22 mi
- Shoshone LakeNatural lake, 7,660 ac, Wyoming40 mi
- Lima ReservoirReservoir, 4,373 ac, Montana41 mi