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United States / Illinois / Smallmouth bass

Smallmouth bass bite in Illinois

Recorded 4 catches of Smallmouth bass in Illinois. Most active — June–November. A day-by-day bite calendar for Smallmouth bass.

Smallmouth bass bite forecast in Illinois today

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    77/100high activity

    Drizzle: 70–79 °F

    Best fishing time: 18:00–21:00

  2. SundaySeptember 6weather-based forecast
    70/100high activity

    Cloudy: 64–91 °F

    Best fishing time: 18:00–21:00

  3. ThursdaySeptember 3weather-based forecast
    69/100high activity

    Partly cloudy: 77–100 °F

    Best fishing time: 05:00–08:00

Map of waters and catches

Loading map…

Where it's caught

  • Lake of the Woods1 catch
  • Fox River1 catch
  • Illinois No Name Number 2037 Reservoir1 catch

Catches

  • Smallmouth bass
    Illinois, Will County
    41 °F9 mph
    Nov 11, 2020
  • Smallmouth bass
    Lake of the Woods

Other fish in Illinois

  • Largemouth bass75 catches
  • Walleye11 catches
  • Black crappie7 catches
  • Pike6 catches
  • White crappie5 catches

Smallmouth bass 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 moderate — fish feed in short bursts. Weather is steady, with no sharp swings — fish behave predictably.

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: jig with grub or crankbait.

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.

Why this forecast

The computed water temperature is around 80 °F — warmer than the 59–75 °F comfort range for Smallmouth bass: in the heat it drops deeper and feeds less often.

Computed water temperature by month; the green band is the 59–75 °F comfort rangecomfort 59–75 °F80 °F
JFMAMJJASOND

Smallmouth bass 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 Smallmouth bass 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 peak season for Smallmouth bass here.

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?
81 °F
7 mph
Jun 06, 2020
  • Smallmouth bass
    Fox River
    86 °F7 mph
    Jun 16, 2018
  • Smallmouth bass
    Illinois No Name Number 2037 Reservoir
    88 °F2 mph
    Jun 02, 2018
  • Flathead catfish4 catches
  • Bluegill4 catches
  • Yellow perch4 catches
  • Channel catfish2 catches
  • Rainbow trout1 catch
  • Steelhead1 catch
  • White bass1 catch