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Forecast
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© 2026·AI-powered bite forecast
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United States / Idaho / River Watson Slough

Bite forecast: River Watson Slough

  • length 5 mi
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Best fishing days for the next week

  1. SundaySeptember 6weather-based forecast
    62/100high activity

    Clear: 39–72 °F

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Nearby water bodies

  • ReservoirJensens Grove Lake8 mi

River Watson Slough (Idaho) — a popular fishing spot. About 9 km long. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

SaturdaySeptember 5weather-based forecast
61/100high activity

Cloudy: 34–70 °F

  • MondaySeptember 7weather-based forecast
    61/100high activity

    Drizzle: 45–63 °F

  • 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?
    Brook troutYellow perchBurbotCutthroat troutLake troutSmallmouth bassSteelheadWalleyeWhitefishBlack crappieRainbow troutBrown troutCarpChinook salmonBluegillChannel catfishLargemouth bass

    Black crappie

    6/10 · Fair

    Hourly activity

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

    The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 20:00–22:00 (dusk bite).

    Tactics

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

    Lures

    In clear water, natural colors work best: small jig or minnow bait.

    Gear

    Pack transitional-season clothing — mornings and evenings are chilly.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 55 °F — colder than the 57–75 °F comfort range for Black crappie: the fish conserves energy and takes more cautiously.

    Computed water temperature by month; the green band is the 57–75 °F comfort rangecomfort 57–75 °F55 °F
    JFMAMJJASOND

    Black crappie 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 Black crappie 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 · 29.7723:00 · 29.70 inHg

    One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.

    Feeding windows on the day scale0:0012:0024:00

    September is an average month for Black crappie here.

    JFMAMJJASOND

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

    2 SepWednesday, September 2
    +47°

    Cloudy · feels like +38°

    Low / high
    +46°…+57°
    Precipitation
    0.00 in
    Wind
    15 mph W
    Cloud cover
    100%
    Humidity
    81%
    Pressure
    29.74 inHg
    00:00+49°—4 mpheast wind, 4 mph77%99%
    01:00+47°—10 mphsoutheast wind, 10 mph82%99%
    02:00+47°—13 mphsoutheast wind, 13 mph73%82%
    03:00+47°—12 mphsoutheast wind, 12 mph73%100%
    04:00+47°—11 mphsoutheast wind, 11 mph71%95%
    05:00+46°—11 mphsoutheast wind, 11 mph72%92%
    06:00+46°—11 mphsoutheast wind, 11 mph73%99%
    07:00+46°—13 mphsoutheast wind, 13 mph70%100%
    08:00+47°—13 mphsoutheast wind, 13 mph71%100%
    09:00+49°—13 mphsoutheast wind, 13 mph72%100%
    10:00+52°—12 mphsouth wind, 12 mph70%100%
    11:00+50°—16 mphwest wind, 16 mph71%100%
    12:00+47°—15 mphwest wind, 15 mph81%100%
    13:00+54°—12 mphsouthwest wind, 12 mph57%0%
    14:00+55°—14 mphsouthwest wind, 14 mph39%100%
    15:00+57°—17 mphsouthwest wind, 17 mph26%21%
    16:00+57°—18 mphsouthwest wind, 18 mph25%45%
    17:00+57°—18 mphsouthwest wind, 18 mph26%79%
    18:00+55°—17 mphsouthwest wind, 17 mph31%95%
    19:00+54°—15 mphsouthwest wind, 15 mph33%100%
    20:00+51°—12 mphsouthwest wind, 12 mph35%100%
    21:00+49°—14 mphsouthwest wind, 14 mph36%95%
    22:00+48°—15 mphsouthwest wind, 15 mph41%100%
    23:00+47°—13 mphsouthwest wind, 13 mph47%100%
    +57°+51°+46°
    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
    06:58
    Sunset
    20:11
    Day length
    13 h 13 min
    Sunshine hours
    7 h
    UV index
    2
    low
    Moon
    Waning gibbous
    Moonrise
    22:28
    Moonset
    13:17

    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

    +11% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major04:28–06:28Moon overhead
    • Minor12:47–13:47Moonset
    • Major16:56–18:56Moon underfoot
    • Minor21:58–22:58Moonrise

    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?