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Official National Weather Service (NWS) point forecast and real-time wind conditions for Clark Canyon Reservoir (Montana). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Winter Weather Advisory issued October 10 at 10:40PM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT
Today: High 34°F · Low 29°F
Peak gusts: 32 mph · Lake surface chop expected
Humidity: 89% · Barometer: 29.83 inHg
USGS water monitoring available for Clark Canyon Reservoir.
Winter Weather Advisory issued October 10 at 10:40PM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT
Fair for boating (56/100), from 4 available inputs. Supporting this: Wind 13 mph from the northeast. Working against it: 81% 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.
Fair for fishing (67/100), from 5 available inputs. Supporting this: Dawn hours (06:00 local). Wind 13 mph from the northeast. Working against it: 81% chance of precipitation is likely. Air temperature 29°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 kayaking (56/100), from 5 available inputs. Supporting this: Wind 13 mph from the northeast. Working against it: 81% 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. Supporting this: Wind 13 mph from the northeast. Working against it: Air temperature 29°F. Active moderate alert: Winter Weather Advisory. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 6 AM | 29°F | 13 mph | NE | ⚡ 18 mph | 81% | Light Snow |
| 7 AM | 29°F | 14 mph | NE | ⚡ 17 mph | 58% | Light Snow Likely |
| 8 AM | 29°F | 13 mph | NE | ⚡ 17 mph | 51% | Chance Light Snow |
| 9 AM | 29°F | 13 mph | NE | ⚡ 17 mph | 61% | Light Snow Likely |
| 10 AM | 29°F | 13 mph | NE | ⚡ 18 mph | 63% | Light Snow Likely |
| 11 AM | 29°F | 12 mph | NE | ⚡ 17 mph | 67% | Light Snow Likely |
| 12 PM | 31°F | 10 mph | NE | ⚡ 15 mph | 55% | Rain And Snow Likely |
| 1 PM | 33°F | 9 mph | NE | ⚡ 16 mph | 65% | Rain And Snow Likely |
| 2 PM | 33°F | 9 mph | NE | ⚡ 16 mph | 78% | Rain And Snow |
| 3 PM | 33°F | 10 mph | NE | ⚡ 17 mph | 84% | Rain And Snow |
| 4 PM | 33°F | 10 mph | NE | ⚡ 17 mph | 92% | Rain And Snow |
| 5 PM | 34°F | 12 mph | NE | ⚡ 17 mph | 97% | Rain And Snow |
| 6 PM | 34°F | 12 mph | NE | ⚡ 17 mph | 94% | Rain And Snow |
| 7 PM | 34°F | 12 mph | NE | ⚡ 18 mph | 95% | Rain And Snow |
| 8 PM | 32°F | 13 mph | NE | ⚡ 21 mph | 98% | Rain And Snow |
| 9 PM | 33°F | 15 mph | NE | ⚡ 22 mph | 90% | Rain And Snow |
| 10 PM | 32°F | 16 mph | NE | ⚡ 24 mph | 91% | Rain And Snow |
| 11 PM | 31°F | 15 mph | NE | ⚡ 23 mph | 92% | Rain And Snow |
| 12 AM | 30°F | 14 mph | NE | ⚡ 22 mph | 89% | Light Snow |
| 1 AM | 30°F | 13 mph | NE | ⚡ 21 mph | 83% | Light Snow |
| 2 AM | 28°F | 10 mph | NE | ⚡ 17 mph | 68% | Light Snow Likely |
| 3 AM | 28°F | 9 mph | NE | ⚡ 14 mph | 58% | Light Snow Likely |
| 4 AM | 26°F | 7 mph | NE | ⚡ 12 mph | 58% | Light Snow Likely |
| 5 AM | 25°F | 6 mph | NE | ⚡ 8 mph | 42% | Chance Light Snow |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
Snow before noon, then rain and snow. Cloudy, with a high near 34. Northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Rain and snow. Cloudy. Low around 22, with temperatures rising to around 25 overnight. Northeast wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
A slight chance of snow before noon, then a chance of rain and snow between 2pm and 5pm. Mostly cloudy, with a high near 39. North northeast wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Mostly cloudy, with a low around 23. South southeast wind around 3 mph.
Mostly sunny, with a high near 46. West wind around 3 mph.
Mostly clear, with a low around 23. Southeast wind around 3 mph.
Sunny, with a high near 52. Southwest wind around 5 mph.
Mostly clear, with a low around 27. West southwest wind around 6 mph.
Sunny, with a high near 54.
Mostly clear, with a low around 26.
Sunny, with a high near 60.
Mostly clear, with a low around 29.
Sunny, with a high near 65.
Mostly clear, with a low around 31.
Clark Canyon Reservoir currently reports 34°F with wind velocity near 21 mph from the NE. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Clark Canyon Reservoir and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO TFX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Clark Canyon Reservoir without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Clark Canyon Reservoir Water Level & Temperature page.
View Clark Canyon Reservoir Water Level & Temperature →