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Hebgen Lake sits in Montana and is classified as a lake. The water surface spans about 12,563 acres, making it a large body of water. Other waters in the region include Henrys Lake. Coverage here includes an hourly and 7-day forecast, wind and gust outlook, and activity scores for boating, paddling, and swimming. Forecasts for Hebgen Lake come from the National Weather Service and refresh several times a day.
Updated
Alerts are published by official agencies and shown verbatim. View the official alert source.
Winter Weather Advisory issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT
Overall Fair (64/100) across 4 activities. Best right now: Kayaking (72/100).
How the score is calculated →Best good fishing window, averaging 86/100 across these hours. Wind 3 mph from the north-northwest. Dawn hours (07:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 38° | 38° | 37° | 36° | 34° | 33° | 31° | 30° | 29° | 28° | 27° | 26° | 26° | 26° | 26° | 27° | 27° | 26° | 26° | 26° | 28° | 31° | 34° | 36° |
| Wind (kts) | 3 | 3 | 3 | 3 | 4 | 6 | 8 | 10 | 10 | 9 | 8 | 7 | 5 | 4 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 |
| Direction | N | N | N | N | N | N | N | N | N | N | N | N | NW | NW | N | NE | E | E | SE | S | S | S | S | S |
| Gusts (kts) | 7 | 7 | 8 | 8 | 9 | 10 | 14 | 19 | 19 | 17 | 16 | 13 | 10 | 8 | 6 | 5 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 7 |
| Precip % | 100% | 100% | 99% | 96% | 96% | 90% | 96% | 99% | 96% | 77% | 56% | 35% | 26% | 15% | 16% | 13% | 10% | 11% | 8% | 16% | 20% | 25% | 17% | 32% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 2 PM MDT | 38°F | 3 mph N (0°) | 8 mph | 100% | 100% | Rain |
| Sun, 3 PM MDT | 38°F | 3 mph N (0°) | 8 mph | 100% | 100% | Rain |
| Sun, 4 PM MDT | 37°F | 3 mph N (0°) | 9 mph | 99% | 100% | Rain |
| Sun, 5 PM MDT | 36°F | 3 mph N (0°) | 9 mph | 96% | 98% | Rain And Snow |
| Sun, 6 PM MDT | 34°F | 5 mph N (0°) | 10 mph | 96% | 100% | Rain And Snow |
| Sun, 7 PM MDT | 33°F | 7 mph N (0°) | 12 mph | 90% | 99% | Rain And Snow |
| Sun, 8 PM MDT | 31°F | 9 mph N (0°) | 16 mph | 96% | 99% | Rain And Snow |
| Sun, 9 PM MDT | 30°F | 12 mph N (0°) | 22 mph | 99% | 100% | Snow |
| Sun, 10 PM MDT | 29°F | 12 mph N (0°) | 22 mph | 96% | 99% | Snow |
| Sun, 11 PM MDT | 28°F | 10 mph N (0°) | 20 mph | 77% | 99% | Snow |
| Mon, 12 AM MDT | 27°F | 9 mph NNW (338°) | 18 mph | 56% | 97% | Snow Likely |
| Mon, 1 AM MDT | 26°F | 8 mph NNW (338°) | 15 mph | 35% | 96% | Chance Light Snow |
| Mon, 2 AM MDT | 26°F | 6 mph NW (315°) | 12 mph | 26% | 94% | Chance Light Snow |
| Mon, 3 AM MDT | 26°F | 5 mph NW (315°) | 9 mph | 15% | 95% | Slight Chance Light Snow |
| Mon, 4 AM MDT | 26°F | 3 mph NNW (338°) | 7 mph | 16% | 92% | Slight Chance Light Snow |
| Mon, 5 AM MDT | 27°F | 2 mph NNE (23°) | 6 mph | 13% | 84% | Mostly Cloudy |
| Mon, 6 AM MDT | 27°F | 2 mph ENE (68°) | 5 mph | 10% | 84% | Mostly Cloudy |
| Mon, 7 AM MDT | 26°F | 2 mph E (90°) | 5 mph | 11% | 89% | Cloudy |
| Mon, 8 AM MDT | 26°F | 3 mph SE (135°) | 5 mph | 8% | 86% | Mostly Cloudy |
| Mon, 9 AM MDT | 26°F | 3 mph S (180°) | 5 mph | 16% | 89% | Slight Chance Light Snow |
| Mon, 10 AM MDT | 28°F | 3 mph S (180°) | 5 mph | 20% | 82% | Slight Chance Light Snow |
| Mon, 11 AM MDT | 31°F | 5 mph S (180°) | 7 mph | 25% | 93% | Chance Rain And Snow |
| Mon, 12 PM MDT | 34°F | 5 mph S (180°) | 7 mph | 17% | 88% | Slight Chance Rain And Snow |
| Mon, 1 PM MDT | 36°F | 5 mph S (180°) | 8 mph | 32% | 92% | Chance Rain And Snow |
| Mon, 2 PM MDT | 38°F | 3 mph S (180°) | 8 mph | 51% | 90% | Chance Rain And Snow |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | This Afternoon October 11, 2026 | Tonight October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 | Saturday Night October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 41° | 25° | 40° | 27° | 43° | 22° | 51° | 24° | 54° | 26° | 59° | 30° | 59° | 31° |
| Wind | N 3 mph | NNW 2 to 12 mph | SE 5 mph | SSW 3 mph | N 6 mph | N 1 to 6 mph | NW 3 mph | WNW 5 mph | NNW 2 mph | NNE 1 to 5 mph | SE 3 mph | S 1 to 8 mph | S 7 mph | S 3 to 7 mph |
| Gusts | 9 mph | 22 mph | 8 mph | 6 mph | 12 mph | 15 mph | 9 mph | 8 mph | 8 mph | 7 mph | 9 mph | 12 mph | 16 mph | 12 mph |
| Precip % | 100% | 99% | 51% | 22% | 7% | 5% | 3% | 2% | 0% | 0% | 0% | 0% | 0% | 0% |
| Forecast |
Nearby river temperature: 56.1°F at Madison River bl Hebgen Lake nr Grayling MT (0.7 mi away) · Oct 11, 1:45 PM UTC
Fair for fishing (61/100), from 5 available inputs. Supporting this: Wind 3 mph from the north. Sky is overcast (100% cloud cover). Working against it: 100% chance of precipitation is likely. Air temperature 38°F. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Fair for boating (71/100), from 4 available inputs. Supporting this: Wind 3 mph from the north. Gusts to 8 mph. Working against it: 100% chance of precipitation is likely. Active moderate alert: Winter Weather Advisory. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Poor for sailing (48/100), from 4 available inputs. Supporting this: Gusts exceed sustained wind by 5 mph, making the breeze puffy. Working against it: 100% chance of precipitation is likely. Active moderate alert: Winter Weather Advisory. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (72/100), from 5 available inputs. Supporting this: Wind 3 mph from the north. Gusts to 8 mph. Working against it: 100% chance of precipitation is likely. Active moderate alert: Winter Weather Advisory. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of MT Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
With its sweeping shoreline and open waters, Hebgen Lake in MT is a favorite getaway for anglers, watersports fans, and campers. The lake provides access via several public ramps, offering easy entry for trailered boats and kayaks. Follow state boating education standards and carry required safety equipment onboard.
Valid freshwater sport fishing license issued by Montana Fish, Wildlife & Parks (FWP) is required for anglers age 12+. Digital license on mobile is accepted.
Mandatory Clean, Drain & Dry inspection. Out-of-area craft require on-site Aquatic Invasive Species (AIS Quagga/Zebra) inspection or decontamination before launch. USCG life jackets required for all.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Brown Trout, Mountain Whitefish, Rainbow Trout. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Northern cold winter conditions with freezing air temperatures and potential surface ice formation. Ramps and water systems may be winterized. Confirm open status before visiting.
NWS API Web Service · License: U.S. Government work · Attribution: Data provided by the National Weather Service (api.weather.gov)
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Hebgen Lake is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 11, 2:37 PM MDT