← Lake Guide39.50° N · 88.68° W

Illinois

Lake Shelbyville

Lake Shelbyville is a lake in Shelby County, Illinois, where largemouth bass move between shallow cover and deeper water through the year.

Surface
10,235acres
Primary species
Largemouth
§ 01Today on the water · Lake Shelbyvillevia Open-Meteo · 13:45 local
Air temp
82.1°F
Barometric
30.00″
→steady 24h(0.00)
Wind
9mph
from SW
Moon
Waning Gibbous
day 19.4 · 77% lit

Air conditions sampled near the lake center, not measured on the water · refreshed ~15 min

§ 03Next 3 daysvia Open-Meteo · interpretation
  1. 1
    sepTue

    Stable window

    hi 98° · lo 73°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

  2. 2
    sepWed

    Stable window

    hi 100° · lo 75°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

  3. 3
    sepThu

    Stable window

    hi 101° · lo 76°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

§ 04Field notesIllinois

Where it is

Lake Shelbyville sits in Shelby County, Illinois, covering about 10,235 acres. Largemouth read the season, sliding shallow or deep as it dictates.

Seasonal pattern

Spring. As the shallows warm first, fish move up to stage and spawn, with sheltered, sun-warmed water coming on earliest.

Summer. With the surface hot, largemouth favor deeper edges and shade, and the low-light hours carry the bite.

Fall. Cooling water moves bait shallow again and largemouth follow, spreading out and feeding ahead of winter.

Winter. In cold water fish hold deep and inactive; ease off the pace and keep presentations quiet.

Key structure

  • Wind-pushed banks that gather forage
  • Creek and cove mouths that funnel fish and bait
  • Weed edges and the clean lines along them
  • Flats sitting next to deeper water

Which of these produces tracks the season more than the map.

Forage

Baitfish concentrations shape where largemouth feed across Lake Shelbyville, shallow or deep.

Access

Around Lake Shelbyville in Shelby County, public access exists; confirm ramp and launch status locally as levels change through the year.

Regulations

Check current state and local regulations before fishing; limits and seasons can change.

§ 05Sources & field guides

Field guides

Data & references

  • Today's conditions — Open-Meteo, refreshed every ~15 min
  • Moon phase — local astronomical calculation, no external API
  • Lake area, depth, structure — Identity, surface area, coordinates and county/state are from the ProjectD canonical waterbody index (snapshot conus-20260518-v1, group gnis:00422192). Maximum depth and regulation links were not available from an acceptable source and are intentionally omitted.
  • Regulations — verify current state and local regulations before fishing

Last revised · Back to Lake Guide