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Forecast
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United States / Illinois / Blue catfish

Blue catfish bite in Illinois

Blue catfish lives in Illinois. Today's bite forecast, a day-by-day and hour-by-hour activity calendar, best time and baits.

Blue catfish bite forecast in Illinois today

Best fishing days for the next week

  1. ThursdaySeptember 3weather-based forecast
    40/100medium activity

    Partly cloudy: 77–100 °F

    Best fishing time: 00:00–03:00

  2. TuesdaySeptember 8weather-based forecast
    38/100medium activity

    Drizzle: 70–79 °F

    Best fishing time: 00:00–03:00

  3. SundaySeptember 6weather-based forecast
    35/100medium activity

    Cloudy: 64–91 °F

    Best fishing time: 00:00–03:00

Other fish in Illinois

  • Largemouth bass75 catches
  • Walleye11 catches
  • Black crappie7 catches
  • Pike6 catches
  • White crappie5 catches
  • Smallmouth bass4 catches
  • Flathead catfish4 catches
  • Bluegill4 catches
  • Yellow perch4 catches
  • Channel catfish2 catches
  • Rainbow trout1 catch
  • Steelhead1 catch
  • Blue catfish 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 — 00:00–05:00 and 23:00–23:00 (nighttime activity).

    Tactics

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

    Lures

    In clear water, natural colors work best: cut-bait bottom rig or large bottom bait.

    Gear

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

    Summary

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

    Why this forecast

    The computed water temperature is around 80 °F — inside the 68–86 °F comfort range for Blue catfish, so baseline activity is high.

    Computed water temperature by month; the green band is the 68–86 °F comfort rangecomfort 68–86 °F80 °F
    JFMAMJJASOND

    Blue catfish feeds at night: the peak falls in the dark hours, between sunset and sunrise.

    The day: daylight hours and when Blue catfish feeds0:0012:0024:00

    Pressure is dropping 0.03 inHg over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 0.03 inHg change
    00:00 · 29.9723:00 · 29.94 inHg

    September is a slow season for Blue catfish: the best months fall at another time of year.

    JFMAMJJASOND

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

    2 SepWednesday, September 2
    +98°

    Clear · feels like +100°

    Low / high
    +78°…+100°
    Precipitation
    0.00 in
    Wind
    11 mph SW
    Cloud cover
    10%
    Humidity
    35%
    Pressure
    30.00 inHg
    00:00+81°—6 mphsouth wind, 6 mph58%0%
    01:00+79°—5 mphsouth wind, 5 mph63%0%
    02:00+79°—5 mphsouth wind, 5 mph65%0%
    03:00+78°—6 mphsouth wind, 6 mph70%0%
    04:00+78°—7 mphsouthwest wind, 7 mph72%2%
    05:00+78°—9 mphsouthwest wind, 9 mph69%1%
    06:00+78°—7 mphsouthwest wind, 7 mph71%0%
    07:00+78°—6 mphsouthwest wind, 6 mph72%0%
    08:00+83°—10 mphsouthwest wind, 10 mph61%0%
    09:00+88°—11 mphsouthwest wind, 11 mph48%1%
    10:00+92°—11 mphsouthwest wind, 11 mph41%2%
    11:00+96°—11 mphsouthwest wind, 11 mph37%2%
    12:00+98°—11 mphsouthwest wind, 11 mph35%10%
    13:00+99°—11 mphsouthwest wind, 11 mph33%4%
    14:00+100°—11 mphsouthwest wind, 11 mph32%8%
    15:00+100°—11 mphsouthwest wind, 11 mph30%8%
    16:00+100°—11 mphsouthwest wind, 11 mph29%0%
    17:00+99°—11 mphsouthwest wind, 11 mph30%0%
    18:00+97°—11 mphsouth wind, 11 mph30%0%
    19:00+94°—9 mphsouth wind, 9 mph34%0%
    20:00+90°—7 mphsouth wind, 7 mph40%0%
    21:00+87°—6 mphsouth wind, 6 mph45%0%
    22:00+86°—7 mphsouth wind, 7 mph48%0%
    23:00+84°—7 mphsouth wind, 7 mph54%0%
    +100°+89°+78°
    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
    06:25
    Sunset
    19:24
    Day length
    12 h 59 min
    Sunshine hours
    11 h 42 min
    UV index
    6
    high
    Moon
    Waning gibbous
    Moonrise
    22:06
    Moonset
    12:27

    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

    +13% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major03:52–05:52Moon overhead
    • Minor11:57–12:57Moonset
    • Major16:20–18:20Moon underfoot
    • Minor21:36–22:36Moonrise

    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?