Flat light and a covered sky today, with mild air moving in from the WSW and a rising glass. Expect most activity at Rainbow Lake around the shaded margin through bright spells. If you must go, go in the night. One good spot fished well beats five fished quickly. Falling temperatures are switching fish back on.
The bites are poor now
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Rainbow Lake belongs to Flathead County, Montana. The water sits 3,451 feet up. About 4 acres of surface, which puts the far bank inside easy sight. On size it sits at the modest end of our Flathead County list. Nearest place of any size is Whitefish, 5.2 miles away. The big place round here is Lethbridge, 114 miles distant. No border sits close enough to matter.
There is no recorded depth, so work from what you can see. Look for the band where the shallows give up and the bottom falls away. A soft bed grows weed late into autumn, which keeps fish shallow. Reported across Flathead County: rainbow trout, sockeye salmon and largemouth bass. Protected fish appear in the records for this area, so treat the list as information, not an invitation. Work Rainbow Lake in sections rather than trying to cover it.
The seasonal spread runs 21°F to 63°F. Spring and autumn carry the fishing; summer and winter test it. Ice-out usually falls in early April, and the weeks after it fish hardest. In an average year the thaw lands around early April and the freeze near late November. Early summer and early autumn carry the open-water season. Plan around that when you fish Rainbow Lake.
Public data does not answer the access question here. No made access appears within a short radius, so plan to park on a verge and walk. A small crankbait along the drop and a worm in the thick stuff cover the bass. Read any posted signs at the access point rather than assuming. Close seasons apply to some species and not others. Murray Lake sits 0.5 miles off and takes the overflow. The position on Rainbow Lake is worth confirming on the day.
31%
The bites are poor 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 |
| 1.1 | 1.3 | 1.1 | 1.1 | 1.5 | 1.5 | 1.1 | 1.3 | 1 | 1.1 | 1.7 | 3.7 | 5 | 8 | 10.1 | 9.9 | 14.4 | 13.3 | 11.2 | 8.7 | 5.2 | 5.3 | 4.3 | 4.3 |
| 49° | 48° | 47° | 47° | 46° | 44° | 43° | 44° | 43° | 46° | 51° | 55° | 61° | 63° | 68° | 68° | 65° | 62° | 58° | 56° | 54° | 52° | 49° | 48° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 29.76 | 29.74 | 29.72 | 29.7 | 29.67 | 29.64 | 29.62 | 29.6 | 29.58 | 29.56 | 29.55 | 29.52 | 29.5 | 29.48 | 29.47 | 29.46 | 29.47 | 29.49 | 29.52 | 29.54 | 29.56 | 29.56 | 29.58 | 29.59 |
| 66 | 67 | 66 | 66 | 67 | 67 | 67 | 67 | 68 | 63 | 59 | 51 | 45 | 44 | 32 | 32 | 34 | 40 | 51 | 56 | 60 | 64 | 68 | 70 |
Sam
AI Fishing Assistant for Rainbow Lake
Evening
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Best bite time