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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
Forecast
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© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United States / Iowa / Cedar River

Bite forecast: Cedar River

  • length 282 mi
Loading map…

Best fishing days for the next week

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

    Drizzle: 68–82 °F

Nearby rivers

  • Dry Run2 mi

Nearby water bodies

  • LakeBig Woods Lake2 mi
  • PondPanther Pond2 mi
  • LakeMullen's Pond2 mi
  • LakeAlice Wyth Lake2 mi
  • LakeFisher Lake3 mi
  • LakeShirey Lake3 mi
  • LakeLake Manatt3 mi
  • LakeGeorge Wyth Lake4 mi
  • LakeBullfrog Boyou4 mi
  • LakeBrinker Lake4 mi

Cedar River (Iowa) — one of the area's fishing spots. About 454 km long. Close by — Cedar Rapids and Waterloo. 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
57/100medium activity

Cloudy: 73–104 °F

  • SundaySeptember 6weather-based forecast
    57/100medium activity

    Cloudy: 70–99 °F

  • Nearby towns

    • Cedar Rapids0.1 mi
    • Waterloo0.2 mi

    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?
    PikeSmallmouth bassWhite bassYellow perchBlack crappieMuskellungeWalleyeWhite crappieLargemouth bassBluegillCarpChannel catfishFlathead catfishRainbow trout

    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 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

    The water's turning murky — go with bright, noisy lures: small jig or minnow bait.

    Gear

    It's a hot day — a hat, sunglasses, and plenty of water are a must. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 75 °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 °F75 °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 flat: it moves no more than 0.03 inHg over the day, so the weather isn't shifting today's bite.

    Pressure through the day, 0.03 inHg change
    00:00 · 29.8023:00 · 29.78 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

    2 SepWednesday, September 2
    +83°

    Cloudy · feels like +88°

    Low / high
    +69°…+87°
    Precipitation
    0.00 in
    Wind
    8 mph SE
    Cloud cover
    97%
    Humidity
    64%
    Pressure
    29.88 inHg
    00:00+77°—6 mphsoutheast wind, 6 mph73%100%
    01:00+76°—5 mphsoutheast wind, 5 mph71%22%
    02:00+75°—5 mphsouth wind, 5 mph68%95%
    03:00+73°—11 mphnorth wind, 11 mph73%100%
    04:00+71°—7 mphnorth wind, 7 mph80%100%
    05:00+70°—3 mphsouth wind, 3 mph82%84%
    06:00+69°—4 mphnortheast wind, 4 mph83%6%
    07:00+70°—8 mphsoutheast wind, 8 mph81%97%
    08:00+71°—6 mphnortheast wind, 6 mph84%87%
    09:00+73°—12 mphsoutheast wind, 12 mph79%60%
    10:00+78°—11 mphsoutheast wind, 11 mph71%1%
    11:00+81°—6 mpheast wind, 6 mph67%44%
    12:00+83°—8 mphsoutheast wind, 8 mph64%97%
    13:00+85°0.03 in10 mphsouth wind, 10 mph63%100%
    14:00+87°—16 mphsouth wind, 16 mph52%100%
    15:00+87°—9 mphsouth wind, 9 mph54%100%
    16:00+87°—11 mphsoutheast wind, 11 mph57%80%
    17:00+86°—9 mphsoutheast wind, 9 mph58%100%
    18:00+85°—6 mphsoutheast wind, 6 mph65%100%
    19:00+83°—6 mphsoutheast wind, 6 mph71%100%
    20:00+81°—6 mphsoutheast wind, 6 mph72%66%
    21:00+80°—6 mphsouth wind, 6 mph68%3%
    22:00+78°—6 mphsoutheast wind, 6 mph69%0%
    23:00+76°—6 mphsoutheast wind, 6 mph68%0%
    +87°+78°+69°
    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
    06:44
    Sunset
    19:50
    Day length
    13 h 6 min
    Sunshine hours
    9 h 9 min
    UV index
    2
    low
    Moon
    Waning gibbous
    Moonrise
    22:05
    Moonset
    12:53

    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
    • Major04:05–06:05Moon overhead
    • Minor12:23–13:23Moonset
    • Major16:33–18:33Moon underfoot
    • Minor21:35–22:35Moonrise

    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?
    Loading map…

    Catches

    Recorded 3 catches here. Most commonly caught: Smallmouth bass. Peak season: February–April.

    • Smallmouth bass
      Cedar River
      63 °F11 mph
      Apr 24, 2019
    • Smallmouth bass
      Cedar River
      72 °F13 mph
      Apr 21, 2019
    • Smallmouth bass
      Cedar River
      34 °F18 mph
      Feb 18, 2018

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

    Water

    Gauge height
    78.68 ft
    Streamflow
    1,780 ft³/s

    USGS gauge Cedar River at Cedar Falls, IA, 1 mi away · measured 2026-09-02 02:45 · data source · provisional data, subject to revision