Cottonwood Lake

Sully County, SD

MAYBEConfidence · Medium
Best bite window
Mon · Oct 26, 11 PM → 3 AM (America/Chicago)
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Cottonwood Lake — light winds and rising pressure after a passing system for this window. Watch a front passing through and pressure swinging. Weather-only read (no on-water history calibrating this yet).

Full read

The current fishing-weather read for Cottonwood Lake in Sully County, SD is MAYBE, with the best four-hour window on Mon, Oct 26 from 11 PM to 3 AM (America/Chicago). The main factor in its favor is dry conditions across the window, and the main watch-out is a front passing through. During that window the forecast calls for wind near 6 mph out of the east, gusting to 19 mph, surface pressure near 955 hPa on an unstable trend, and rainfall totaling 0.02 inches over the four hours. Air temperature in the window sits near 32 °F, with a dominant forecast of snow. Confidence in this read is medium; it was generated October 26, 2026, 9:26 AM UTC, and reads refresh on a daily cadence. This is a weather-only read built from forecast weather alone; it does not yet use on-water reports, and confidence is capped until local water data or feedback exists.

UPDATED October 26, 2026, 9:26 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
6mph

E · gust 19

Rain / Weather
0.02in

Snow

Temp
32°F

0°C · hum 97%

Pressure
28.20inHg

Unstable

7-Day Fishing Forecast

One read per day — the bite call, the window, the weather behind it

  1. Mon · Oct 26
    Window passed
    MAYBE
    A front passing through
    39° / 32°F
    10 mph · NEgust 22
    0.52 in
    ↓ -7.6 hPa
  2. Tue · Oct 27
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 32°F
    5 mph · Egust 25
    0.00 in
    ↓ -11.4 hPa
  3. Wed · Oct 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    59° / 45°F
    4 mph · Wgust 17
    0.03 in
    ↑ +5.7 hPa
  4. Thu · Oct 29
    4 AM → 8 AM
    MAYBE
    A front passing through
    61° / 43°F
    3 mph · Sgust 15
    0.00 in
    ↑ +4.6 hPa
  5. Fri · Oct 30
    4 AM → 8 AM
    MAYBE
    A front passing through
    57° / 41°F
    10 mph · NEgust 29
    0.00 in
    ↓ -2.2 hPa
  6. Sat · Oct 31
    4 AM → 8 AM
    MAYBE
    A front passing through
    66° / 48°F
    9 mph · SEgust 27
    0.00 in
    ↓ -7.5 hPa
  7. Sun · Nov 1
    4 AM → 8 AM
    MAYBE
    A front passing through
    64° / 50°F
    7 mph · SEgust 25
    0.00 in
    ↓ -0.5 hPa

Last 3 days

Recent context — what just happened

Pressure
Unstable
+21.0 hPa over 72h
Rain
Light rain
0.44 in totallast 72h
Wind
Gusty
12 mph · gust 42 · E
Temperature
Cooler
-28.3°F over 72h81–32°F range

Weather-only read. Confidence is capped until local water data or feedback exists.

Nearby waters

Weather data by Open-Meteo — CC BY 4.0. Fishing Weather derives the fishing read.