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United States / Idaho / Rainbow trout

Rainbow trout bite in Idaho

Recorded 6 catches of Rainbow trout in Idaho. Most active — May–December. A day-by-day bite calendar for Rainbow trout.

Rainbow trout bite forecast in Idaho today

Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    67/100high activity

    Partly cloudy: 41–66 °F

    Best fishing time: 19:00–22:00

  2. ThursdaySeptember 3weather-based forecast
    57/100medium activity

    Cloudy: 39–54 °F

    Best fishing time: 06:00–09:00

  3. TuesdaySeptember 8weather-based forecast
    50/100medium activity

    Partly cloudy: 34–63 °F

    Best fishing time: 19:00–22:00

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

Loading map…

Where it's caught

  • Henrys Lake2 catches
  • Lower Goose Creek Reservoir1 catch
  • Brundage Reservoir1 catch
  • Big Wood River1 catch
  • Henrys Fork Snake River1 catch

Catches

  • Rainbow trout
    Lower Goose Creek Reservoir
    72 °F2 mph
    May 12, 2019
  • Rainbow trout
    Brundage Reservoir

Other fish in Idaho

  • Largemouth bass13 catches
  • Smallmouth bass5 catches
  • Steelhead4 catches
  • Brown trout3 catches
  • Yellow perch2 catches

Rainbow trout bite calendar

Thursday, September 3

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 moderate — fish feed in short bursts. Pressure is dropping — this usually boosts the bite.

Peak bite hours

Best time — 06:00–08:00 (dawn bite) and 20:00–21:00 (dusk bite).

Tactics

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

Lures

In clear water, natural colors work best: trout paste or trout spoon.

Gear

Bring a warm jacket — it's noticeably colder on the water than on shore.

Summary

An average day — best chances during peak windows.

Why this forecast

The computed water temperature is around 52 °F — inside the 43–61 °F comfort range for Rainbow trout, so baseline activity is high.

Computed water temperature by month; the green band is the 43–61 °F comfort rangecomfort 43–61 °F52 °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 0.06 inHg over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 0.06 inHg change
00:00 · 29.7223:00 · 29.65 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

3 SepThursday, September 3
+47°

Cloudy · feels like +38°

Low / high
+39°…+53°
Precipitation
0.00 in
Wind
14 mph SSW
Cloud cover
95%
Humidity
70%
Pressure
29.81 inHg
00:00+42°—6 mphsouth wind, 6 mph52%5%
01:00+41°—7 mphsouth wind, 7 mph53%100%
02:00+40°—7 mphsouthwest wind, 7 mph57%99%
03:00+40°—8 mphsouthwest wind, 8 mph71%88%
04:00+40°—8 mphsouthwest wind, 8 mph73%100%
05:00+40°—12 mphsouth wind, 12 mph74%100%
06:00+39°—12 mphsouth wind, 12 mph80%99%
07:00+39°—12 mphsouth wind, 12 mph82%100%
08:00+40°—13 mphsouth wind, 13 mph83%100%
09:00+42°—16 mphsouth wind, 16 mph79%100%
10:00+44°—15 mphsouthwest wind, 15 mph76%32%
11:00+45°—13 mphsouthwest wind, 13 mph76%80%
12:00+47°—14 mphsouthwest wind, 14 mph70%95%
13:00+50°—16 mphsouthwest wind, 16 mph61%70%
14:00+50°—14 mphsouthwest wind, 14 mph63%93%
15:00+53°—15 mphsouthwest wind, 15 mph54%100%
16:00+52°—15 mphsouthwest wind, 15 mph56%100%
17:00+51°—14 mphsouthwest wind, 14 mph61%100%
18:00+50°—10 mphsouthwest wind, 10 mph65%100%
19:00+49°—9 mphsouthwest wind, 9 mph66%100%
20:00+47°—8 mphsouthwest wind, 8 mph77%100%
21:00+46°—6 mphsouthwest wind, 6 mph86%100%
22:00+45°—6 mphsouthwest wind, 6 mph85%100%
23:00+45°—6 mphsouthwest wind, 6 mph76%100%
+53°+46°+39°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Thursday, September 3
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:59
Sunset
20:10
Day length
13 h 11 min
Sunshine hours
5 h 35 min
UV index
4
moderate
Moon
Last quarter
Moonrise
23:08
Moonset
14:54

The day is 3 min shorter than yesterday.

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

Solunar feeding periods

+13% in the windowThursday, September 3
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major05:33–07:33Moon overhead
  • Minor14:24–15:24Moonset
  • Major18:03–20:03Moon underfoot
  • Minor22:38–23:38Moonrise

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?
72 °F
4 mph
Aug 14, 2018, 10:24 AM
  • Rainbow trout
    Big Wood River
    Jul 26, 2018
  • Rainbow trout
    Henrys Fork Snake River
    Jun 08, 2018, 11:40 AM
  • Rainbow trout
    Henrys Lake
    21 °F4 mph
    Dec 06, 2017
  • Rainbow trout
    Henrys Lake
    27 °F4 mph
    Dec 01, 2017
  • Black crappie1 catch
  • Cutthroat trout1 catch
  • Walleye1 catch