Palisades Reservoir & Swan Valley, ID

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Swan Valley
Swan Valley - Robert Young from Gdansk, Poland, CC BY 2.0, via Wikimedia Commons

Today’s Forecast:

☀
36°F
High: 44° | Low: 36°
Current Temperature
Clear
Station: KDIJ
Observed at: 7:56 pm CST on 11/12/26
Wind: 5 mph | Humidity: 70%
Tonight:Mostly cloudy, with a low around 37. Southeast wind 7 to 15 mph, with gusts as high as 21 mph.
Friday:Partly sunny. High near 53, with temperatures falling to around 48 in the afternoon. Southeast wind 6 to 15 mph, with gusts as high as 23 mph.
Friday Night:A chance of rain between 11pm and 5am, then rain and snow. Cloudy, with a low around 38. Southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
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Today’s Report:

⛵ Boating

Not Recommended
  12 /100

Not Recommended for boating. High near 53°F. Breezy winds (15 mph). Temperatures outside comfort limits (53°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 4/100
Not Recommended for boating. High near 38°F. High rain probability (80%). Breezy winds (13 mph). Temperatures outside comfort limits (38°F).

🛶 Paddling

Not Recommended
  12 /100

Not Recommended for paddling. High near 53°F. Breezy winds (15 mph). Temperatures outside comfort limits (53°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 3/100
Not Recommended for paddling. High near 38°F. High rain probability (80%). Breezy winds (13 mph). Temperatures outside comfort limits (38°F).

⛺ Camping

Excellent
  97 /100

Excellent for camping. High near 53°F. Breezy winds (15 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 3/100
Not Recommended for camping. High near 38°F. High rain probability (80%). Light wind (13 mph). Temperatures outside comfort limits (38°F).

About Palisades Reservoir & Swan Valley

Palisades Reservoir & Swan Valley is an Idaho destination for a mountain reservoir and upper Snake corridor with winter fishing and snowmobile access.

Make the Most of a Palisades Reservoir & Swan Valley Day

Match the route, launch, facility, or turnaround time to wind, precipitation, temperature, smoke, water, snow, road access, and daylight. Keep a shorter or more sheltered backup ready.

Weather Tips for Palisades Reservoir & Swan Valley

  • Check official access notices, alerts, road or trail conditions, fire restrictions, and local forecasts before leaving.
  • Check river flow, reservoir wind, cold-water conditions, waves, lightning, and verified local ice reports before water plans; no forecast alone proves that ice is safe.
  • Carry layers, water, navigation, sun protection, and seasonal traction or flotation appropriate to the activity.
  • Allow extra time for remote roads, mountain passes, wildfire smoke, spring runoff, and limited winter daylight.

Nearby Towns and Areas

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

  • Alpine
  • Irwin
  • Palisades Dam
  • Fall Creek
  • South Fork Snake River

Plan Around the Conditions

Choose the safest version of a Palisades Reservoir & Swan Valley day by matching the activity to current wind, precipitation, temperature, smoke, water or snow conditions, access, and daylight.

7-Day Forecast for Palisades Reservoir & Swan Valley

☀
36°F
High: 44° | Low: 36°
Current Temperature
Clear
Station: KDIJ
Observed at: 7:56 pm CST on 11/12/26
Wind: 5 mph | Humidity: 70%
Fri ⛅
53° 38°
0%
Sat ❄
38° 33°
80%
Sun ⛅
44° 35°
0%
Mon 🌧
48° 36°
16%
Tue ❄
43° 34°
58%
Wed ❄
38° 32°
58%
Thu ❄
38° --°
55%

7-Day High Temperature Trend

53° Fri 38° Sat 44° Sun 48° Mon 43° Tue 38° Wed 38° Thu

7-Day Low Temperature Trend

38° Fri 33° Sat 35° Sun 36° Mon 34° Tue 32° Wed 50° Thu

📊 7-Day Outdoor Outlook

Good Fair Poor 85 Fri 18 Sat 20 Sun 20 Mon 19 Tue 19 Wed 19 Thu
Forecast data from the National Weather Service  |  Last Updated: November 12, 2026 9:39 pm CST

Palisades Reservoir & Swan Valley Weather by Season

Winter

Winter at Palisades Reservoir & Swan Valley can bring snow, ice, wind, short daylight, and rapidly changing road or trail access. Confirm grooming, avalanche information, ice conditions, and facility operations for the listed winter activities.

Spring

Spring brings freeze-thaw mud, snowmelt, high rivers, cold water, and lingering mountain snow. Lower routes usually open well before high passes and backcountry trailheads.

Summer

Summer usually offers the broadest access, but dry heat, thunderstorms, lightning, wildfire smoke, fire restrictions, reservoir wind, and cold mountain water can alter plans.

Fall

Fall brings cooler air, shorter daylight, hunting-season awareness, and early snow at elevation. Confirm seasonal services and allow extra travel time on remote roads.

Key Climate Data Points

  • Annual average temperature: around 39–45°F, using the relevant local and elevation context.
  • Annual snowfall: commonly 50–100 inches, varying strongly with elevation.
  • Warmest months: July and August are normally warmest.
  • Coolest months: December and January are typically coolest.
  • Wettest season: winter and spring usually provide the greatest mountain precipitation, with local variation.
  • Driest season: midsummer is generally driest, despite isolated thunderstorms.
  • Best outdoor window: June through October for warm-season access, with midwinter best at established winter destinations.