Holter Lake & Gates of the Mountains

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The Missouri River flowing through Gates of the Mountains

Today’s Forecast:

🌤
92°F
Current Temperature
Station: MTSBN
Observed at: 2:02 pm
Wind: 11 mph | Humidity: 25%
⚠️
Heat Advisory
Heat Advisory issued July 24 at 11:09PM MDT until July 26 at 9:00PM MDT by NWS Great Falls MT (Expires: July 26, 2026 10:00 pm)
Show Alert Details & Instructions
Description: * WHAT...High temperatures up to 100 degrees expected. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until 9 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...The heat will peak on Saturday, with lower elevation temperatures reaching the upper 90s to near 100 degrees. Instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. If you must spend time outdoors, wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
This Afternoon:A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 95. South southwest wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Tonight:A chance of showers and thunderstorms before 7pm, then patchy smoke. Mostly clear, with a low around 60. South southeast wind 2 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday:Patchy smoke. Sunny, with a high near 92. South southwest wind 2 to 6 mph.

Today’s Report:

Boating

  12 /100

Not Recommended for boating. High near 94°F. Risk of rain (54%). Breezy winds (14 mph). Thunderstorms forecast or possible.

  • Temp: Marginal weather factor
  • Rain: Marginal weather factor
  • Wind: Marginal weather factor
  • Thunderstorm: Unfavorable weather factor
Tomorrow's Outlook:
Use Caution 46/100

🛶 Paddling

  5 /100

Not Recommended for paddling. High near 94°F. High rain probability (54%). Breezy winds (14 mph). Thunderstorms forecast or possible.

  • Temp: Marginal weather factor
  • Rain: Unfavorable weather factor
  • Wind: Marginal weather factor
  • Thunderstorm: Unfavorable weather factor
Tomorrow's Outlook:
Use Caution 46/100

Camping

  8 /100

Not Recommended for camping. High near 94°F. Risk of rain (54%). Light wind (14 mph). Thunderstorms forecast or possible.

  • Temp: Marginal weather factor
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Unfavorable weather factor
  • Alert: Unfavorable weather factor
⚠️ Active weather alerts affect this activity!
Tomorrow's Outlook:
Not Recommended 22/100

About Holter Lake & Gates of the Mountains

Holter Lake & Gates of the Mountains is a Montana destination for Missouri River boat trips, paddling, shoreline camping, and canyon wind planning.

Make the Most of a Holter Lake & Gates of the Mountains 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 Holter Lake & Gates of the Mountains

  • 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:

  • Holter Lake
  • Gates of the Mountains
  • Wolf Creek
  • Craig
  • Upper Holter Lake

Plan Around the Conditions

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

7-Day Forecast for Holter Lake & Gates of the Mountains

🌤
92°F
Current Temperature
Station: MTSBN
Observed at: 2:02 pm
Wind: 11 mph | Humidity: 25%
Sat
95° 60°
54%
Sun 🌫
92° 59°
0%
Mon
90° 59°
0%
Tue
91° 59°
0%
Wed
91° 59°
1%
Thu
93° 60°
2%
Fri
94° 61°
4%

7-Day High Temperature Trend

95° Sat 92° Sun 90° Mon 91° Tue 91° Wed 93° Thu 94° Fri

7-Day Low Temperature Trend

60° Sat 59° Sun 59° Mon 59° Tue 59° Wed 60° Thu 61° Fri

📊 7-Day Outdoor Outlook

Good Fair Poor 4 Sat 12 Sun 20 Mon 20 Tue 20 Wed 20 Thu 20 Fri
Forecast data from the National Weather Service  |  Last Updated: July 25, 2026 2:28 pm CDT

Holter Lake & Gates of the Mountains Weather by Season

Winter

Winter around Holter Lake & Gates of the Mountains 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.