Red Castle Lake fishing
Red Castle Lake
The most prevalent fish species in Red Castle Lake are Brook Trout, Cutthroat Trout, and Rainbow Trout. Anglers can expect to catch fish ranging in size from 10-16 inches, with occasional larger catches. These fish can be found throughout the lake, though some of the best fishing spots are near the inlets and outlets of the lake.
In addition to fishing, visitors to Red Castle Lake can enjoy a variety of other outdoor activities, such as hiking, camping, and wildlife viewing. The area is home to a number of trails that offer stunning views of the surrounding mountains and valleys.
For those looking to fish Red Castle Lake, there are a few tips to keep in mind. First, it is recommended to use lightweight spinning gear and small lures, as the fish in the lake can be easily spooked. Second, anglers should be prepared to hike to the lake, as it is a 7.5-mile round trip from the trailhead.
The best time of year to visit Red Castle Lake for fishing is from mid-June to early September, when the weather is warm and the fish are most active. Average temperatures during this time range from the mid-60s to mid-70s°F. However, visitors should be prepared for sudden changes in weather and should bring appropriate clothing and gear.
What's biting at Red Castle Lake
Species commonly reported here -- tap any card for techniques, target seasons, and other waters where it's been caught.
Plan your trip down to the hour
Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max so trends jump out at a glance.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks. Hover any point for the full breakdown.
Nearby streamflow
USGS streamgauges within reach of Red Castle Lake -- updated continuously from the National Water Information System.
| Streamgauge | Discharge | View |
|---|---|---|
| Lake Fork River Ab Moon Lake | 183 cfs | → |
| Blacks Fork Near Robertson | 215 cfs | → |
| Lake Fork River Bl Moon Lake Nr Mountain Home | 322 cfs | → |
| Blacks Fork Near Millburne | 327 cfs | → |
| Yellowstone R. At Bridge Campgrnd | 152 cfs | → |
| East Fork Of Smiths Fork Near Robertson | 132 cfs | → |
Plan a longer trip
The closest campgrounds, parks, boat launches, and reservoirs so a fishing run can grow into a weekend.
Campgrounds
- Trail Head Campground
- China Meadows
- China Meadows Campground
- Marsh Lake Campground
- Marsh Lake
- Little Lyman Lake Campground
Reservoirs
Angling safety & ethics
- Know the regulations
- Check local fishing rules, seasons, size limits, and license requirements to ensure legal and sustainable angling.
- Handle fish responsibly
- Use wet hands, minimize air exposure, and release fish gently to improve survival rates when practicing catch-and-release.
- Choose the right gear
- Match your rod, line, and tackle to the species and conditions to increase success and reduce unnecessary harm to fish.
- Respect the waterway
- Avoid disturbing habitat, prevent bank erosion, and keep a safe distance from spawning areas to protect ecosystems.
- Keep it clean
- Pack out all line, hooks, bait containers, and trash. Discarded gear can injure wildlife and degrade waterways.
Set push alerts in the Snoflo app
Save Red Castle Lake as a favorite, set a custom threshold (water temperature, streamflow, snowpack), and the iOS app will push the moment conditions cross.
About Red Castle Lake
What fish species are found at Red Castle Lake?
Snoflo tracks the species commonly reported at Red Castle Lake -- see the Fish Species panel above for the live list with images and links to per-species pages.
How fresh is the weather data on this page?
The hourly forecast updates throughout the day from the NOAA / yr.no public feeds. Streamflow data comes live from USGS streamgauges, also refreshed continuously.
Can I get alerts when conditions change?
Yes -- alerts are managed through the Snoflo iOS app. Favorite this area, set a threshold (water temperature, streamflow, snowpack), and you'll get a push the moment it crosses.
Do I need a fishing license?
Yes. Check your state agency's regulations for license requirements, seasons, size limits, and any waterbody-specific rules before fishing Red Castle Lake.
How do I get to Red Castle Lake?
Tap Open in map in the hero above to center the Snoflo interactive map on this area, or grab the coordinates from the location facts panel.
Other angling spots near here
Snoflo-tracked fishing areas within driving distance of Red Castle Lake.