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© 2026·AI-powered bite forecast
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United States / Connecticut / Willimantic River

Bite forecast: Willimantic River

  • length 25 mi
  • Flows into Shetucket River, Thames River basin
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Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    69/100high activity

    Partly cloudy: 64–82 °F

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Nearby rivers

  • Skungamaug River3 mi
  • Hop River5 mi

Nearby water bodies

  • ReservoirEagleville Lake2 mi
  • LakeCoventry Lake3 mi
  • PondHubner Pond3 mi
  • LakeDunham Pond3 mi
  • PondRoman Pond3 mi
  • LakeMirror Lake3 mi
  • ReservoirHalls Pond4 mi
  • PondSumner Lake4 mi
  • LakeGreens Pond4 mi
  • LakeTift Pond4 mi

Willimantic River (Connecticut) — a spot well known among anglers. About 41 km long. Flows into Shetucket River, Thames River basin. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.

TuesdaySeptember 8weather-based forecast
66/100high activity

Clear: 57–81 °F

  • FridaySeptember 11weather-based forecast
    66/100high activity

    Partly cloudy: 54–66 °F

  • Bite calendar

    7–Sep 13
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    PikeSmallmouth bassStriped bassWalleyeYellow perchBrook troutBlack crappieRainbow troutWhite crappieBluegillBrown troutCarpChannel catfishLargemouth bass

    Black crappie

    6/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. Pressure is rising — activity tends to be more subdued.

    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

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

    Gear

    It's a hot day — a hat, sunglasses, and plenty of water are a must.

    Summary

    An average day — best chances during peak windows.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 67 °F — inside the 57–75 °F comfort range for Black crappie, so baseline activity is high.

    Computed water temperature by month; the green band is the 57–75 °F comfort rangecomfort 57–75 °F67 °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 rising 0.06 inHg over the day — the bite usually settles down after a rise.

    Pressure through the day, 0.06 inHg change
    00:00 · 30.0623:00 · 30.11 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 active season for Black crappie here.

    JFMAMJJASOND

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

    7 SepMonday, September 7
    +73°

    Clear · feels like +72°

    Low / high
    +49°…+78°
    Precipitation
    0.00 in
    Wind
    7 mph NNW
    Cloud cover
    0%
    Humidity
    36%
    Pressure
    30.10 inHg
    00:00+55°—3 mphnorthwest wind, 3 mph94%0%
    01:00+54°—4 mphnorthwest wind, 4 mph94%0%
    02:00+53°—4 mphnorthwest wind, 4 mph93%0%
    03:00+51°—4 mphnorthwest wind, 4 mph90%0%
    04:00+50°—4 mphnorthwest wind, 4 mph88%0%
    05:00+49°—5 mphnorthwest wind, 5 mph87%0%
    06:00+49°—4 mphnorthwest wind, 4 mph86%0%
    07:00+49°—4 mphnorthwest wind, 4 mph84%0%
    08:00+55°—4 mphnorthwest wind, 4 mph71%0%
    09:00+62°—5 mphnorthwest wind, 5 mph56%0%
    10:00+67°—6 mphnorthwest wind, 6 mph47%0%
    11:00+71°—8 mphnorthwest wind, 8 mph40%0%
    12:00+73°—7 mphnorth wind, 7 mph36%0%
    13:00+75°—6 mphnorth wind, 6 mph33%0%
    14:00+77°—7 mphnorth wind, 7 mph33%0%
    15:00+78°—6 mphnorth wind, 6 mph33%0%
    16:00+78°—6 mphnorthwest wind, 6 mph33%0%
    17:00+77°—6 mphnorthwest wind, 6 mph40%20%
    18:00+72°—7 mphnorthwest wind, 7 mph50%0%
    19:00+65°—5 mphnorthwest wind, 5 mph61%0%
    20:00+63°—4 mphnorthwest wind, 4 mph62%6%
    21:00+61°—3 mphnorthwest wind, 3 mph65%12%
    22:00+61°—3 mphwest wind, 3 mph66%100%
    23:00+60°—3 mphwest wind, 3 mph69%100%
    +78°+63°+49°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Monday, September 7
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:21
    Sunset
    19:12
    Day length
    12 h 51 min
    Sunshine hours
    12 h 31 min
    UV index
    6
    high
    Moon
    Waning crescent
    Moonrise
    01:50
    Moonset
    17:26

    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 windowMonday, September 7
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor01:20–02:20Moonrise
    • Major08:44–10:44Moon overhead
    • Minor16:56–17:56Moonset
    • Major21:13–23:13Moon underfoot

    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?

    Measured river conditions are available for Willimantic River: current gauge height, streamflow, and water temperature when reported by the source.

    Water

    Gauge height
    1.12 ft
    Streamflow
    38.7 ft³/s

    USGS gauge WILLIMANTIC RIVER AT MERROW RD. NEAR MERROW, CT, 1 mi away · measured 2026-09-05 00:15 · data source · provisional data, subject to revision