Bright moon and an empty sky tonight, with a busy W wind on the open water with the barometer flat. Whatever swims in Castle Lake should be near shallow cover and weed edges. The productive run goes morning through afternoon. Start on the obvious water and expand from there. Shortening days concentrate the feeding into fewer hours.
The bites are excellent now
Night
Morning
In Montana, Castle Lake belongs to Carbon County. It stands 9,514 feet above sea level. At roughly 20 acres, the whole thing is within casting reach of a single walk. By elevation it is in the upper part of our Montana listings. Red Lodge lies 22 miles from the water. Beyond it, Absarokee at 34 miles and Columbus at 45 miles. Rules here are straightforward: one county, one set of rules.
Depth remains unrecorded, so treat the first session as a survey. The productive water is a rod length or two out, not a hundred. Read the surface for the wind lane, then fish the edge of it. Reported across Carbon County: rainbow trout, brook trout, sauger and walleye. The list covers the county rather than this water alone, so treat it as a guide. Castle Lake repays a walk before the first cast.
Expect August to average close to 47°F, with January the cold end at about 13°F. Winter puts a hard lid on this one. The open season starts with the thaw, near enough mid June. Ice usually gives way near mid June, and forms again about late October. The strong weeks are the first after break-up and the last before the freeze. Castle Lake fishes to that pattern most years.
Public data does not answer the access question here. There is no recorded infrastructure here; expect to find your own way in. Light line and small metal for the trout; a fly rod earns its place on calm evenings. Where the road in crosses private land, ask first. Keep proof of licence with you rather than in the car. Alp Lake, 0.5 miles away, makes the obvious fallback. Nothing on Castle Lake should be assumed from this page alone.
80%
The bites are excellent now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 16.4 | 17.2 | 15.6 | 14.6 | 14.9 | 14.9 | 12.6 | 7.8 | 9 | 12.6 | 13.4 | 11.4 | 12.6 | 12.7 | 11.3 | 10.6 | 8.8 | 6.2 | 5.9 | 5.3 | 4.6 | 4.5 | 4.9 | 5.7 |
| 28° | 28° | 28° | 28° | 28° | 29° | 29° | 29° | 29° | 32° | 35° | 38° | 40° | 41° | 42° | 41° | 39° | 36° | 34° | 32° | 32° | 32° | 31° | 31° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 30.27 | 30.27 | 30.27 | 30.27 | 30.26 | 30.26 | 30.25 | 30.26 | 30.26 | 30.25 | 30.24 | 30.22 | 30.18 | 30.16 | 30.15 | 30.15 | 30.15 | 30.15 | 30.15 | 30.15 | 30.15 | 30.16 | 30.16 | 30.16 |
| 81 | 83 | 84 | 84 | 84 | 84 | 82 | 81 | 81 | 78 | 73 | 66 | 62 | 59 | 59 | 59 | 63 | 69 | 71 | 71 | 71 | 70 | 67 | 66 |
Sam
AI Fishing Assistant for Castle Lake
Afternoon
Evening
Best bite time
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Best bite time
Best bite time
Best bite time
Best bite time
Best bite time