St. Joe River, ID

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St. Joe River Cataldo Mission, Idaho
St. Joe River Cataldo Mission, Idaho - Staben, CC BY 3.0 US, via Wikimedia Commons

Today’s Forecast:

🌤
44°F
High: 50° | Low: 39°
Current Temperature
Station: ITDA9
Observed at: 8:30 pm CST on 11/13/26
Wind: 1 mph | Humidity: 91%
Tonight:Rain between 10pm and 4am, then rain likely and patchy fog. Mostly cloudy. Low around 39, with temperatures rising to around 42 overnight. North wind around 3 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday:Rain likely and patchy fog before 11am. Partly sunny. High near 48, with temperatures falling to around 45 in the afternoon. South wind 1 to 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night:Mostly cloudy. Low around 35, with temperatures rising to around 38 overnight. Southeast wind 1 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
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Today’s Report:

🛶 Paddling

Not Recommended
  12 /100

Not Recommended for paddling. High near 48°F. Rain forecast later today (67%). Temperatures outside comfort limits (48°F).

  • Temp: Unfavorable weather factor
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 4/100
Not Recommended for paddling. High near 47°F. High rain probability (85%). Temperatures outside comfort limits (47°F).

⛺ Camping

Use Caution
  44 /100

Use Caution for camping. High near 48°F. Rain forecast later today (67%).

  • Temp: Marginal weather factor
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 17/100
Not Recommended for camping. High near 47°F. High rain probability (85%).

🚲 Biking

Use Caution
  41 /100

Use Caution for biking. High near 48°F. Rain forecast later today (67%).

  • Temp: Marginal weather factor
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 12/100
Not Recommended for biking. High near 47°F. High rain probability (85%).

About St. Joe River

St. Joe River is an Idaho destination for a scenic river and camping corridor with upper-basin winter trail access.

Make the Most of a St. Joe River 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 St. Joe River

  • 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:

  • St. Maries
  • Avery
  • Calder
  • Marble Creek
  • St. Joe National Forest

Plan Around the Conditions

Choose the safest version of a St. Joe River day by matching the activity to current wind, precipitation, temperature, smoke, water or snow conditions, access, and daylight.

7-Day Forecast for St. Joe River

🌤
44°F
High: 50° | Low: 39°
Current Temperature
Station: ITDA9
Observed at: 8:30 pm CST on 11/13/26
Wind: 1 mph | Humidity: 91%
Sat 🌧
48° 35°
67%
Sun 🌧
48° 36°
85%
Mon 🌧
42° 31°
69%
Tue ☁
40° 28°
6%
Wed ❄
42° 30°
39%
Thu ☁
39° 28°
14%
Fri ⛅
40° --°
2%

7-Day High Temperature Trend

48° Sat 48° Sun 42° Mon 40° Tue 42° Wed 39° Thu 40° Fri

7-Day Low Temperature Trend

35° Sat 36° Sun 31° Mon 28° Tue 30° Wed 28° Thu 50° Fri

📊 7-Day Outdoor Outlook

Good Fair Poor 19 Sat 18 Sun 19 Mon 20 Tue 19 Wed 20 Thu 20 Fri
Forecast data from the National Weather Service  |  Last Updated: November 13, 2026 9:24 pm CST

St. Joe River Weather by Season

Winter

Winter at St. Joe River 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 46–51°F, using the relevant local and elevation context.
  • Annual snowfall: commonly 25–60 inches in lower valleys and more upstream.
  • 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.