Bruneau Dunes State Park, ID

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Sand dunes at Bruneau Dunes State Park
Sand dunes at Bruneau Dunes State Park. Image by Steve Spring via Wikimedia Commons, CC BY 3.0.

Today’s Forecast:

☀
55°F
High: 78° | Low: 45°
Current Temperature
Clear
Station: KMUO
Observed at: 10:55 pm CDT on 9/26/26
Wind: 8 mph | Humidity: 35%
Tonight:Mostly cloudy, with a low around 45. West southwest wind 2 to 6 mph.
Sunday:Mostly cloudy, with a high near 78. Northeast wind 3 to 15 mph.
Sunday Night:Cloudy, with a low around 49. West northwest wind 10 to 17 mph.
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Today’s Report:

🥾 Hiking

Excellent
  90 /100

Excellent for hiking. High near 78°F. Low rain risk (4%). Light wind (17 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 90/100
Excellent for hiking. High near 78°F. Low rain risk (2%). Light wind (17 mph).

⛺ Camping

Use Caution
  46 /100

Use Caution for camping. High near 78°F. Low rain risk (4%). Breezy winds (17 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 46/100
Use Caution for camping. High near 78°F. Low rain risk (2%). Breezy winds (17 mph).

🎪 Outdoor Events / Activities

Use Caution
  48 /100

Use Caution for outdoor events / activities. High near 78°F. Low rain risk (4%). Breezy winds (17 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 48/100
Use Caution for outdoor events / activities. High near 78°F. Low rain risk (2%). Breezy winds (17 mph).

About Bruneau Dunes State Park

Bruneau Dunes State Park is an Idaho destination for a named dune, camping, sandboarding, and dark-sky destination.

Make the Most of a Bruneau Dunes State Park 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 Bruneau Dunes State Park

  • Check official access notices, alerts, road or trail conditions, fire restrictions, and local forecasts before leaving.
  • Turn around before exposed ridges, canyon rims, dunes, or open ground become unsafe in lightning, heat, smoke, wind, or poor visibility.
  • 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:

  • Bruneau
  • Snake River Birds of Prey area
  • C.J. Strike Reservoir
  • Mountain Home
  • Observatory

Plan Around the Conditions

Choose the safest version of a Bruneau Dunes State Park day by matching the activity to current wind, precipitation, temperature, smoke, water or snow conditions, access, and daylight.

7-Day Forecast for Bruneau Dunes State Park

☀
55°F
High: 78° | Low: 45°
Current Temperature
Clear
Station: KMUO
Observed at: 10:55 pm CDT on 9/26/26
Wind: 8 mph | Humidity: 35%
Sun ☁
78° 49°
4%
Mon ⛅
78° 44°
2%
Tue ☀
79° 44°
0%
Wed ☀
81° 45°
0%
Thu ☀
83° 46°
0%
Fri ☀
80° 44°
0%
Sat ☀
78° --°
1%

7-Day High Temperature Trend

78° Sun 78° Mon 79° Tue 81° Wed 83° Thu 80° Fri 78° Sat

7-Day Low Temperature Trend

49° Sun 44° Mon 44° Tue 45° Wed 46° Thu 44° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 80 Sun 80 Mon 75 Tue 20 Wed 20 Thu 70 Fri 80 Sat
Forecast data from the National Weather Service  |  Last Updated: September 27, 2026 1:54 am CDT

Bruneau Dunes State Park Weather by Season

Winter

Winter at Bruneau Dunes State Park can bring snow, ice, wind, short daylight, and rapidly changing road or trail access.

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 50–54°F, using the relevant local and elevation context.
  • Annual snowfall: usually 5–15 inches, with dry wind and large temperature swings.
  • 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.