Craters of the Moon National Monument, ID

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Craters of the Moon National Monument - Idaho

Today’s Forecast:

☀
61°F
High: 61° | Low: 48°
Current Temperature
Clear
Station: KSUN
Observed at: 7:55 pm CDT on 9/26/26
Wind: 9 mph | Humidity: 29%
Tonight:Mostly cloudy. Low around 48, with temperatures rising to around 51 overnight. West wind 3 to 12 mph, with gusts as high as 22 mph.
Sunday:Mostly cloudy, with a high near 69. East northeast wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday Night:Mostly cloudy. Low around 48, with temperatures rising to around 51 overnight. North northwest wind around 8 mph.
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Today’s Report:

🥾 Hiking

Excellent
  100 /100

Excellent for hiking. High near 69°F. Low rain risk (1%). Light wind (9 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for hiking. High near 66°F. Low rain risk (11%). Light wind (12 mph).

⛺ Camping

Excellent
  100 /100

Excellent for camping. High near 69°F. Low rain risk (1%). Light wind (9 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for camping. High near 66°F. Low rain risk (11%). Light wind (12 mph).

🎪 Outdoor Events / Activities

Excellent
  100 /100

Excellent for outdoor events / activities. High near 69°F. Low rain risk (1%). Light wind (9 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for outdoor events / activities. High near 66°F. Low rain risk (11%). Light wind (12 mph).

About Craters of the Moon National Monument

Craters of the Moon National Monument is an Idaho destination for a named lava landscape with trails, camping, winter loops, and extreme exposure.

Make the Most of a Craters of the Moon National Monument 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 Craters of the Moon National Monument

  • 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:

  • Arco
  • Carey
  • Goodale’s Cutoff
  • Big Southern Butte
  • Minidoka Desert

Plan Around the Conditions

Choose the safest version of a Craters of the Moon National Monument day by matching the activity to current wind, precipitation, temperature, smoke, water or snow conditions, access, and daylight.

7-Day Forecast for Craters of the Moon National Monument

☀
61°F
High: 61° | Low: 48°
Current Temperature
Clear
Station: KSUN
Observed at: 7:55 pm CDT on 9/26/26
Wind: 9 mph | Humidity: 29%
Sun ☁
69° 48°
1%
Mon ⛅
66° 46°
11%
Tue ☀
68° 46°
0%
Wed ☀
70° 46°
0%
Thu ☀
70° 47°
0%
Fri ☀
69° 47°
1%
Sat ☀
67° --°
2%

7-Day High Temperature Trend

69° Sun 66° Mon 68° Tue 70° Wed 70° Thu 69° Fri 67° Sat

7-Day Low Temperature Trend

48° Sun 46° Mon 46° Tue 46° Wed 47° Thu 47° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Sun 100 Mon 100 Tue 100 Wed 100 Thu 100 Fri 100 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 10:37 pm CDT

Craters of the Moon National Monument Weather by Season

Winter

Winter at Craters of the Moon National Monument 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 43–48°F, using the relevant local and elevation context.
  • Annual snowfall: commonly 20–40 inches, with wind-driven drifting.
  • 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.