Canyon Ferry Lake, MT

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Canyon Ferry Dam viewed from the lake

Today’s Forecast:

🌤
51°F
High: 61° | Low: 40°
Current Temperature
Station: BOMM8
Observed at: 3:00 pm CST on 11/12/26
Wind: 0 mph | Humidity: %
This Afternoon:Partly sunny. High near 61, with temperatures falling to around 55 in the afternoon. Southeast wind around 9 mph.
Tonight:Mostly cloudy, with a low around 40. Southeast wind 9 to 15 mph, with gusts as high as 25 mph.
Friday:Partly sunny. High near 59, with temperatures falling to around 54 in the afternoon. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
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Today’s Report:

⛵ Boating

  12 /100

Not Recommended for boating. High near 59°F. Breezy winds (15 mph). Temperatures outside comfort limits (59°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 23/100
Not Recommended for boating. High near 56°F. Low rain risk (4%). Light wind (9 mph). Temperatures outside comfort limits (56°F).

🛶 Paddling

  12 /100

Not Recommended for paddling. High near 59°F. Breezy winds (15 mph). Temperatures outside comfort limits (59°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 23/100
Not Recommended for paddling. High near 56°F. Low rain risk (4%). Light wind (9 mph). Temperatures outside comfort limits (56°F).

⛺ Camping

Excellent
  97 /100

Excellent for camping. High near 59°F. Breezy winds (15 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for camping. High near 56°F. Low rain risk (4%). Light wind (9 mph).

About Canyon Ferry Lake

Canyon Ferry Lake is a Montana destination for large-reservoir boating, paddling, beaches, campgrounds, and exposure to strong wind.

Make the Most of a Canyon Ferry Lake Day

Use the forecast to match the day’s route, launch, road access, and turnaround time to wind, precipitation, temperature, smoke, water conditions, and elevation. Keep a shorter or lower-elevation backup ready.

Weather Tips for Canyon Ferry Lake

  • Check current access, alerts, fire restrictions, and local forecasts before setting out.
  • Cold water, waves, current, wind, and lightning should guide launch and crossing decisions more than sunshine alone.
  • Montana weather can shift quickly; carry layers, sun protection, water, and a reliable navigation plan.
  • Allow extra daylight for remote roads, seasonal traffic, wildlife, and changing trail or shoreline conditions.

Nearby Towns and Areas

This page can also be useful when planning outdoor time near:

  • Townsend
  • Helena
  • Canyon Ferry Dam
  • Goose Bay
  • White Earth

Plan Around the Conditions

Choose the safest and most enjoyable version of a Canyon Ferry Lake day by matching the activity to current wind, precipitation, smoke, temperature, road access, trail surfaces, water conditions, and daylight.

7-Day Forecast for Canyon Ferry Lake

🌤
51°F
High: 61° | Low: 40°
Current Temperature
Station: BOMM8
Observed at: 3:00 pm CST on 11/12/26
Wind: 0 mph | Humidity: %
Thu ⛅
61° 40°
0%
Fri ⛅
59° 40°
0%
Sat ⛅
57° 35°
11%
Sun ☀
52° 36°
0%
Mon 🌧
51° 36°
33%
Tue ❄
46° 32°
36%
Wed ❄
43° 30°
29%

7-Day High Temperature Trend

61° Thu 59° Fri 57° Sat 52° Sun 51° Mon 46° Tue 43° Wed

7-Day Low Temperature Trend

40° Thu 40° Fri 35° Sat 36° Sun 36° Mon 32° Tue 30° Wed

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Thu 100 Fri 100 Sat 75 Sun 70 Mon 19 Tue 20 Wed
Forecast data from the National Weather Service  |  Last Updated: November 12, 2026 8:31 pm CST

Canyon Ferry Lake Weather by Season

Winter

Winter around Canyon Ferry Lake can bring snow, ice, strong wind, short daylight, and abrupt cold. Check road, trail, campground, and facility access before leaving, and expect conditions to change sharply with elevation. Cold water and ice remain serious hazards even when the air feels mild.

Spring

Spring is variable, with freeze-thaw cycles, mud, lingering mountain snow, rising water, and occasional late storms. Lower routes often open well before high-country roads and trails. Cold water and ice remain serious hazards even when the air feels mild.

Summer

Summer generally offers the broadest access, but heat, afternoon thunderstorms, wildfire smoke, fire restrictions, gusty wind, and limited shade can alter plans. Start exposed outings early and carry more water than expected.

Fall

Fall brings cooler days, clearer periods, changing color, shorter daylight, and the possibility of early snow. Seasonal services can close before winter weather becomes continuous, so confirm local operations.

Key Climate Data Points

  • Annual average temperature: around 40–46°F, using the relevant local and elevation context.
  • Annual snowfall: commonly 35–70 inches in valleys and foothills, while nearby mountains receive much more.
  • Warmest months: July and August are normally warmest.
  • Coolest months: December and January are typically coolest.
  • Wettest season: late spring and early summer often bring the most precipitation, with local mountain variation.
  • Driest season: midsummer is often driest, although thunderstorms remain possible.
  • Best outdoor window: June through September for the broadest access, with shoulder seasons useful at lower elevations.