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Forecast
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United States / Colorado / Rainbow trout

Rainbow trout bite in Colorado

Recorded 22 catches of Rainbow trout in Colorado. Most active — year-round. A day-by-day bite calendar for Rainbow trout.

Rainbow trout bite forecast in Colorado today

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    63/100high activity

    Clear: 59–88 °F

    Best fishing time: 18:00–21:00

  2. ThursdaySeptember 3weather-based forecast
    56/100medium activity

    Clear: 61–88 °F

    Best fishing time: 05:00–08:00

  3. WednesdaySeptember 2weather-based forecast
    24/100low activity

    Clear: 63–88 °F

    Best fishing time: 05:00–08:00

How to catch Rainbow trout

Tackle, baits, spots and seasons — a full guide to catching Rainbow trout.

Read the guide →

Map of waters and catches

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Where it's caught

  • Monument Lake3 catches
  • Cooley Lake3 catches
  • Gunnison River2 catches
  • Tarryall Reservoir2 catches
  • Big Thompson River1 catch
  • Taylor River1 catch
  • Antero Reservoir1 catch
  • Dillon Reservoir1 catch

Catches

  • Rainbow trout — Big Thompson River, Mar 26, 2021, 10:29 AM
    3
    Rainbow trout
    Big Thompson River
    34 °F4 mph
    Mar 26, 2021, 10:29 AM
  • Rainbow trout — Tarryall Reservoir, Feb 25, 2018
    2
    Rainbow trout
    Tarryall Reservoir

Other fish in Colorado

  • Largemouth bass48 catches
  • Smallmouth bass15 catches
  • Pike11 catches
  • Brown trout8 catches
  • Walleye8 catches
12 °F
4 mph
Feb 25, 2018
  • Rainbow trout — Tarryall Reservoir, Feb 17, 2018
    2
    Rainbow trout
    Tarryall Reservoir
    27 °F9 mph
    Feb 17, 2018
  • Rainbow trout
    Taylor River
    72 °F7 mph
    Jun 12, 2020, 3:34 PM
  • Rainbow trout
    Monument Lake
    41 °F7 mph
    Mar 23, 2019
  • Rainbow trout
    Monument Lake
    39 °F2 mph
    Feb 01, 2019
  • Rainbow trout
    Monument Lake
    39 °F4 mph
    Dec 30, 2018
  • Rainbow trout
    Cooley Lake
    Dec 22, 2018
  • Brook trout5 catches
  • Cutthroat trout5 catches
  • Black crappie3 catches
  • Lake trout3 catches
  • Bluegill2 catches
  • Carp1 catch
  • Rainbow trout bite calendar

    Wednesday, September 2

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?

    Hourly activity

    0:006:0012:0018:0023:00
    Bite activity:highmediumlow

    The bite is weak — fish are sluggish. Weather is steady, with no sharp swings — fish behave predictably.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

    Tactics

    Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.

    Lures

    The water's turning murky — go with bright, noisy lures: trout paste or trout spoon.

    Gear

    It's a hot day — a hat, sunglasses, and plenty of water are a must. Winds will be strong — wind protection helps, and be careful if you're in a boat.

    Summary

    A slow day — go only if you really feel like it.

    Why this forecast

    The computed water temperature is around 70 °F — warmer than the 43–61 °F comfort range for Rainbow trout: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 43–61 °F comfort rangecomfort 43–61 °F70 °F
    JFMAMJJASOND

    Rainbow trout works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.

    The day: daylight hours and when Rainbow trout feeds0:0012:0024:00

    Pressure is dropping 0.09 inHg over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 0.09 inHg change
    00:00 · 29.7923:00 · 29.71 inHg

    September is an active season for Rainbow trout here.

    JFMAMJJASOND

    These are the same values the bite curve above was computed from. How the forecast works

    2 SepWednesday, September 2
    +81°

    Clear · feels like +79°

    Low / high
    +62°…+87°
    Precipitation
    0.00 in
    Wind
    6 mph SSE
    Cloud cover
    0%
    Humidity
    22%
    Pressure
    29.77 inHg
    00:00+65°—5 mphnorth wind, 5 mph40%12%
    01:00+63°—6 mphsouth wind, 6 mph42%14%
    02:00+63°—4 mphsouth wind, 4 mph42%1%
    03:00+62°—3 mphsouthwest wind, 3 mph41%0%
    04:00+63°—4 mphsoutheast wind, 4 mph39%0%
    05:00+63°—7 mphsoutheast wind, 7 mph39%0%
    06:00+62°—9 mphsoutheast wind, 9 mph40%0%
    07:00+62°—7 mphsoutheast wind, 7 mph36%0%
    08:00+66°—7 mphsoutheast wind, 7 mph30%0%
    09:00+73°—5 mphsouthwest wind, 5 mph25%0%
    10:00+77°—7 mphsouthwest wind, 7 mph23%1%
    11:00+79°—7 mphsouth wind, 7 mph23%0%
    12:00+81°—6 mphsoutheast wind, 6 mph22%0%
    13:00+83°—6 mphsoutheast wind, 6 mph21%48%
    14:00+85°—12 mphsouthwest wind, 12 mph18%11%
    15:00+87°—19 mphsouthwest wind, 19 mph14%21%
    16:00+87°—19 mphsouthwest wind, 19 mph12%4%
    17:00+85°—7 mphnorth wind, 7 mph18%100%
    18:00+79°—9 mphnortheast wind, 9 mph23%100%
    19:00+78°—9 mphsouth wind, 9 mph21%100%
    20:00+74°—8 mphnorthwest wind, 8 mph26%79%
    21:00+73°—8 mphnortheast wind, 8 mph27%78%
    22:00+71°—5 mphsouthwest wind, 5 mph25%40%
    23:00+68°—7 mphsouthwest wind, 7 mph27%0%
    +87°+75°+62°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Wednesday, September 2
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:29
    Sunset
    19:29
    Day length
    13 h
    Sunshine hours
    9 h 7 min
    UV index
    7
    high
    Moon
    Waning gibbous
    Moonrise
    22:11
    Moonset
    12:35

    The day is 2 min shorter than yesterday.

    Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

    Solunar feeding periods

    +14% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major03:59–05:59Moon overhead
    • Minor12:05–13:05Moonset
    • Major16:26–18:26Moon underfoot
    • Minor21:41–22:41Moonrise

    The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.

    What are solunar periods?