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Minnesota

Rainy Lake

Covering roughly 45,770 acres in St. Louis County, Minnesota, Rainy Lake is a year-round largemouth water with strong seasonal swings.

Surface
45,770acres
Primary species
Largemouth
§ 01Today on the water · Rainy Lakevia Open-Meteo · 09:00 local
Air temp
67.2°F
Barometric
29.80″
↓falling 24h(-0.22)
Wind
10mph
from S
Moon
Waning Crescent
day 26.4 · 10% lit

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

§ 03Next 3 daysvia Open-Meteo · interpretation
  1. 8
    sepTue

    Stable window

    hi 78° · lo 61°

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

    ── light sw wind

  2. 9
    sepWed

    Tougher window

    hi 64° · lo 56°

    Pick the calmest hour and stay flexible. Conditions push hard today; bite likely shrinks. Plan around the calmest gap.

    ── strong w wind · bite likely shrinks

  3. 10
    sepThu

    Stable window

    hi 73° · lo 50°

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

    ── light s wind · settled

§ 04Field notesMinnesota

Where it is

Set in St. Louis County, Minnesota, Rainy Lake covers about 45,770 acres. Largemouth here move with the season rather than holding one zone.

Seasonal pattern

Spring. Early warming sends largemouth into the shallows to stage and spawn, the calmest sun-fed water leading the move.

Summer. Heat pushes fish off the shallows toward depth and shade; work the cooler ends of the day.

Fall. Falling water temperature draws bait and largemouth back shallow into a broad, roaming feed.

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

Key structure

  • Hard-bottom and rock transitions
  • Inside turns where a bank changes angle
  • Channel edges and the breaks beside them
  • Flats sitting next to deeper water

Season first, spot second — that order holds here.

Forage

Largemouth track baitfish and the panfish around the same cover on Rainy Lake, season to season.

Access

Access is public around Rainy Lake; ramp and launch status changes with water levels, so confirm locally first.

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:00662245). 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