It’s a fishing day

Lake Granby fishing conditions · Colorado

Today, 10 am–6 pmLake trout

The bite peaks at 68.

Log a trip here
Right now: 55 for lake trout, marginalTap or drag along the water to move through the next 36 hours

Lake trout, hour by hour

Each float is an hour. The deeper it rides, the better the bite. The strip underneath runs daylight, dusk and dark; the red rule marks the best window. Click any hour to read it.

  1. 551 am
  2. 55
  3. 55
  4. 554 am
  5. 57
  6. 57
  7. 577 am
  8. 57
  9. 60
  10. 6810 am
  11. 68
  12. 68
  13. 681 pm
  14. 68
  15. 68
  16. 684 pm
  17. 68
  18. 60
  19. 587 pm
  20. 58
  21. 58
  22. 5810 pm
  23. 60
  24. 60Tue
  25. 601 am
  26. 58
  27. 58
  28. 584 am
  29. 60
  30. 60
  31. 607 am
  32. 58
  33. 58
  34. 5810 am
  35. 68
  36. 68
Go, 85+Worth the trip, 70+Marginal, 55+Sit it out

Right now

Water
No reading

Lake trout range 40–52°

Wind
1 mph

From the south

Light
Dark

Sunrise 7:25 am

Sky
Rain And Snow Showers Likely

61% chance of rain

Air
36°F

NWS hourly forecast

Barometer
Steady

Measured, last 3 hours

Moon
100% lit

Full

What’s biting

Each species is scored against its own water-temperature range and tide preference, then wind, weather and warnings. The rules are Colorado non-tidal regulations for these waters.

Lake Trout

Lake trout

Salvelinus namaycush

68MarginalToday, 10 am–6 pm

Water

No water reading here right now. Lake trout bite in 40–52° water, best near 48°.

Why

Light chop — baitfish active, fish willing to feed. Holds 30–200 ft down.

Keep

4 a day

Open. Keep fish within the limits. Colorado statewide: 4 trout a day in aggregate (brook, brown, cutbow, cutthroat, golden, lake, rainbow, splake, tiger), 8 in possession, no minimum length. Brook trout 8" or shorter are an extra 10 a day. Blue Mesa and Lake Granby set their own lake trout limits.

Verified Oct 23, 2026 · Colorado non-tidal

Season here: Sep–Jun. More on lake trout

Kokanee Salmon

Kokanee salmon

Oncorhynchus nerka

68MarginalToday, 10 am–6 pm

Water

No water reading here right now. Kokanee salmon bite in 45–59° water, best near 53°.

Why

Light chop — baitfish active, fish willing to feed. Holds 20–120 ft down.

Keep

10 a day

Open. Keep fish within the limits. Colorado statewide: 10 kokanee a day by angling, snagging or archery, no minimum. Snagging is legal only on listed waters and dates.

Verified Oct 23, 2026 · Colorado non-tidal

Season here: Year-round. More on kokanee salmon

Rainbow Trout

Rainbow trout

Oncorhynchus mykiss

68MarginalToday, 10 am–6 pm

Water

No water reading here right now. Rainbow trout bite in 45–68° water, best near 55°.

Why

Light chop — baitfish active, fish willing to feed. Holds 3–20 ft down.

Keep

4 a day

Open. Keep fish within the limits. Colorado statewide: 4 trout a day in aggregate (brook, brown, cutbow, cutthroat, golden, lake, rainbow, splake, tiger), 8 in possession, no minimum length. Brook trout 8" or shorter are an extra 10 a day.

Verified Oct 23, 2026 · Colorado non-tidal

Season here: May–Jun, Sep–Oct, estimated from local air temperature, 2023–2025; there is no water gauge here. More on rainbow trout

Brown Trout

Brown trout

Salmo trutta

60MarginalToday, 10 am–6 pm

Water

No water reading here right now. Brown trout bite in 45–68° water, best near 55°.

Why

Light chop — baitfish active, fish willing to feed. Brown trout feeds less actively under bright moon. Holds 3–25 ft down.

Keep

4 a day

Open. Keep fish within the limits. Colorado statewide: 4 trout a day in aggregate (brook, brown, cutbow, cutthroat, golden, lake, rainbow, splake, tiger), 8 in possession, no minimum length. Brook trout 8" or shorter are an extra 10 a day.

Verified Oct 23, 2026 · Colorado non-tidal

Season here: May–Oct, estimated from local air temperature, 2023–2025; there is no water gauge here. More on brown trout

The water

  • Water temperatureNo reading
  • Barometer30.34 inHg, steady

Sun, moon & solunar

  • Sunrise today7:25 am
  • Sunset today6:08 pm
  • MoonFull, 100% lit
  • Major solunarSunday 11:40 pm–1:40 am
  • Minor solunarToday 7:40 am–8:40 am
  • Major solunarToday 12:00 pm–2:00 pm

Solunar tables are a popular heuristic. A peer-reviewed test found they don’t predict catch on their own, so here they only nudge the score when the tide or moon already agree. How the score works

Fishing report

No current report covers these waters.

We only show reports an agency has published, with their date. Colorado Parks & Wildlife has the state’s fishing pages.

Licenses and rules: state fishery agencies · fish-consumption advisory

About this spot

Colorado's third-largest reservoir, in Grand County near Rocky Mountain National Park. A big-water lake trout fishery that also produces rainbow and brown trout and kokanee salmon.

Nearby

Public spots within 40 miles, with the same 36 hours of floats.

Dillon Reservoir40 mi · ColoradoBest today 10 am–6 pm
68Marginal

Questions people ask

Do I need a fishing license to fish at Lake Granby?

Yes (anglers age 16 and older). To fish at Lake Granby you need the appropriate state fishing license. See the agency's current rules: the state agency website

What fish are commonly targeted at Lake Granby?

Lake Granby is listed on this site for 4 commonly-targeted species: Lake Trout, Kokanee Salmon, Rainbow Trout, Brown Trout. Which species is currently in season and which is scoring highest today is shown in the per-species ranking on this page.

When is the best time to fish at Lake Granby?

It depends more on the species and the day's conditions than on a fixed "best hour." Water temperature, weather, and — at tidal locations — the stage of the tide drive activity most. The per-species ranking on this page scores every target species at Lake Granby against today's live conditions, so the fish near the top are your best bets right now; check back as conditions change through the day.

What kind of access does Lake Granby have?

Lake Granby has multiple access types — pier, shoreline, and at least one public boat ramp.

Which state's fishing regulations apply at Lake Granby?

state agency regulations apply at Lake Granby. Size limits, creel limits, and seasonal closures are listed per species on each species page. Always confirm against the agency source linked from each regulation block — emergency closures can take effect mid-season.

Is Lake Granby tidal water?

No. Lake Granby is non-tidal — water level varies with rainfall, seasonal flow, and (where applicable) upstream dam releases rather than tidal exchange.