Clark Canyon Reservoir Conditions & Weather

Clark Canyon Reservoir Conditions & Weather | LakeRadar

24-Hour Hourly Weather & Wind Timeline

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Hour-by-hour forecast for Clark Canyon Reservoir, next 24 hours
Metric	10p	11p	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p
Temp (°F)	59°	57°	54°	50°	47°	43°	40°	39°	37°	36°	35°	34°	32°	31°	29°	28°	28°	27°	28°	28°	29°	29°	30°	30°
Wind (kts)	19	17	16	16	18	19	20	21	22	22	20	19	17	15	14	14	15	15	14	13	12	12	13	13
Direction	W	NW	N	N	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE
Gusts (kts)	27	24	22	22	25	27	28	29	31	31	28	27	24	21	20	20	21	21	20	18	17	17	18	18
Precip %	53%	46%	43%	56%	49%	63%	67%	80%	58%	56%	73%	94%	82%	80%	75%	54%	42%	68%	72%	82%	48%	64%	78%	80%

ForecastView official hourly forecast

Hour-by-hour forecast for Clark Canyon Reservoir, next 24 hours
Time	Temp	Wind	Gusts	Precip	Cloud	Condition
Sat, 4 PM MDT	59°F	22 mph WSW (248°)	31 mph	53%	82%	Chance Showers And Thunderstorms
Sat, 5 PM MDT	57°F	20 mph NW (315°)	28 mph	46%	81%	Chance Showers And Thunderstorms
Sat, 6 PM MDT	54°F	18 mph N (0°)	25 mph	43%	77%	Chance Showers And Thunderstorms
Sat, 7 PM MDT	50°F	18 mph N (0°)	25 mph	56%	83%	Showers And Thunderstorms Likely
Sat, 8 PM MDT	47°F	21 mph NNE (23°)	29 mph	49%	87%	Chance Showers And Thunderstorms
Sat, 9 PM MDT	43°F	22 mph NE (45°)	31 mph	63%	88%	Light Rain Likely
Sat, 10 PM MDT	40°F	23 mph NE (45°)	32 mph	67%	86%	Light Rain Likely
Sat, 11 PM MDT	39°F	24 mph NE (45°)	33 mph	80%	87%	Light Rain
Sun, 12 AM MDT	37°F	25 mph NE (45°)	36 mph	58%	88%	Light Rain Likely
Sun, 1 AM MDT	36°F	25 mph NE (45°)	36 mph	56%	86%	Light Rain Likely
Sun, 2 AM MDT	35°F	23 mph NE (45°)	32 mph	73%	91%	Rain And Snow Likely
Sun, 3 AM MDT	34°F	22 mph NE (45°)	31 mph	94%	96%	Light Snow
Sun, 4 AM MDT	32°F	20 mph NE (45°)	28 mph	82%	95%	Light Snow
Sun, 5 AM MDT	31°F	17 mph NE (45°)	24 mph	80%	96%	Rain And Snow
Sun, 6 AM MDT	29°F	16 mph NE (45°)	23 mph	75%	96%	Light Snow
Sun, 7 AM MDT	28°F	16 mph NE (45°)	23 mph	54%	95%	Chance Light Snow
Sun, 8 AM MDT	28°F	17 mph NE (45°)	24 mph	42%	96%	Chance Light Snow
Sun, 9 AM MDT	27°F	17 mph NE (45°)	24 mph	68%	94%	Light Snow Likely
Sun, 10 AM MDT	28°F	16 mph NE (45°)	23 mph	72%	94%	Light Snow Likely
Sun, 11 AM MDT	28°F	15 mph NNE (23°)	21 mph	82%	94%	Light Snow
Sun, 12 PM MDT	29°F	14 mph NNE (23°)	20 mph	48%	96%	Chance Light Snow
Sun, 1 PM MDT	29°F	14 mph NNE (23°)	20 mph	64%	97%	Light Snow Likely
Sun, 2 PM MDT	30°F	15 mph NNE (23°)	21 mph	78%	96%	Light Snow
Sun, 3 PM MDT	30°F	15 mph NNE (23°)	21 mph	80%	97%	Light Snow
Sun, 4 PM MDT	29°F	15 mph NNE (23°)	21 mph	90%	97%	Light 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.

7-Day Weather & Wind Forecast

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Seven-day forecast periods for Clark Canyon Reservoir from the official forecast source
Period	This Afternoon October 10, 2026	Tonight October 10, 2026	Sunday October 11, 2026	Sunday Night 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
Temp (°F)	62°	27°	30°	23°	36°	25°	48°	26°	54°	28°	57°	28°	61°	32°
Wind	W 22 mph	NNE 17 to 25 mph	NE 14 to 17 mph	NNE 10 to 18 mph	NE 3 to 9 mph	SE 3 mph	WNW 3 mph	SW 3 mph	WSW 5 mph	WSW 3 to 7 mph	W 6 mph	N 1 to 5 mph	S 5 mph	S 3 to 13 mph
Gusts	31 mph	36 mph	24 mph	28 mph	13 mph	6 mph	8 mph	7 mph	10 mph	10 mph	10 mph	7 mph	9 mph	17 mph
Precip %	53%	94%	93%	99%	46%	12%	8%	3%	5%	8%	5%	3%	2%	0%
Forecast	Chance Showers And Thunderstorms	Showers And Thunderstorms Likely then Rain And Snow	Light Snow	Snow	Chance Light Snow	Mostly Cloudy	Partly Sunny	Mostly Clear	Sunny	Mostly Clear	Sunny	Mostly Clear	Sunny	Mostly Clear

Forecast periods from official National Weather Service grid. Detailed 7-Day & Hourly Forecast →

Fishing Conditions & Outlook

Solunar windows, water thermocline & species tactics

Score 35 · Poor

Poor for fishing (35/100), from 5 available inputs. Supporting this: Afternoon hours (16:00 local). Sky is cloudy (82% cloud cover). Working against it: Wind 22 mph from the west-southwest. The forecast mentions thunderstorms, which carries a risk penalty. 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.

Prime Solunar Window

5:00 AM MDT – 11:00 AM MDT

Water Layer Temp

Sensor Pending

Surface Chop

19 mph

Barometer Trend

29.83 inHg

Verified Game Fish Species (4):

🐟Mountain Whitefish🐟European Carp🐟Brown Trout🐟Rainbow Trout

View Full Fishing Forecast & Solunar Times →Fishing methodology →

Boating & Sailing Outlook

Surface chop, sustained knots, gusts & launch facilities

Boating 12Sailing 34

Motorized Boating

Launch Access

Very Poor / Avoid for boating (12/100), from 4 available inputs. Working against it: Gusts to 31 mph. Active moderate alert: Winter Weather Advisory. The forecast mentions thunderstorms, which carries a risk penalty. 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.

Surface state: Steep Waves (2–4+ ft)

Boating Outlook & Ramps Directory →

Sailing & Wind Trim

17 kts (19 mph)

Very Poor / Avoid for sailing (34/100), from 4 available inputs. Supporting this: Gusts exceed sustained wind by 9 mph, making the breeze puffy. Working against it: Active moderate alert: Winter Weather Advisory. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: visibility. Confidence is high (88%).

Kayaking, Paddling & Swimming

Paddle drag, thermal comfort & cold water immersion safety

Paddling 14Swimming --

Paddlecraft Readiness

Headwind Drag

Very Poor / Avoid for kayaking (14/100), from 5 available inputs. Supporting this: Air temperature 59°F. Working against it: Gusts to 31 mph. Active moderate alert: Winter Weather Advisory. The forecast mentions thunderstorms, which carries a risk penalty. Confidence is high (90%).

Immersion: Wear USCG Approved Life Jacket

Paddlecraft Guidelines & Launch Points →

Swimming & Immersion

Not monitored

Water temperature is not available from a verified source for this lake. No swimming score is shown without it.

Water Temperature & 30-Day History →

Lake Guide & Verified Facts

Visitor Essentials, Seasonal Guide & Hydrographic Profile

Clark Canyon Reservoir in MT is a popular freshwater reservoir known for its welcoming public recreation, scenic beauty, and dependable sport fishing. Multiple public access sites allow easy launching for trailered boats and personal watercraft. Park facilities and regional fisheries management are overseen by state and local natural resource agencies.

Surface Area

4,935 acres (8 sq mi)

Max Depth

Not documented

Surface Elevation

Not documented

Managing Authority

State & Local Authorities

Classification

Reservoir

State Jurisdiction

Visitor Essentials · Know Before You Go

Fishing Licensing (Montana FWP)

Valid freshwater sport fishing license issued by Montana Fish, Wildlife & Parks (FWP) is required for anglers age 12+. Digital license on mobile is accepted.

Boating & AIS Biosecurity Protocol

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 Recreation & Access Pass

Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.

Primary Water Recreation Profile

High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Mountain Whitefish, European Carp, Brown Trout, Rainbow Trout. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.

Seasonal Recreation & Climate Windows

Summer Peak (Jun–Aug)Peak Season

Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.

Spring & Fall ShoulderPrime Angling

Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.

Winter Season (Nov–Mar)Off-Season

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.

Get Directions (GPS) ↗Managing Authority Portal ↗

All geographical facts sourced from official agency recordsView sources →

Clark Canyon Reservoir Conditions

Winter Weather Advisory

Quick Conditions

LakeRadar Score

24-Hour Hourly Weather & Wind Timeline

7-Day Weather & Wind Forecast

Water Level & Hydrographic Baseline

Water Temperature (Surface)

Fishing Conditions & Outlook

Boating & Sailing Outlook

Kayaking, Paddling & Swimming

Interactive Map & Navigation Radar

Coordinates and access points

Public Access & Facilities

Boating & Water Regulations

Lake Guide & Verified Facts

Official alerts

Winter Weather Advisory

Quick Conditions

LakeRadar Score

24-Hour Hourly Weather & Wind Timeline

7-Day Weather & Wind Forecast

Water Level & Hydrographic Baseline

Water Temperature (Surface)

Fishing Conditions & Outlook

Boating & Sailing Outlook

Kayaking, Paddling & Swimming

Interactive Map & Navigation Radar

Coordinates and access points

Public Access & Facilities

Boating & Water Regulations

Lake Guide & Verified Facts

Related Lakes

Sources and methodology