Post 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 Post 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 Post 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 northeast, gusting to 17 mph, surface pressure near 959 hPa on an unstable trend, and rainfall totaling 0.02 inches over the four hours. Air temperature in the window sits near 34 °F, with a dominant forecast of snow. Confidence in this read is medium; it was generated October 26, 2026, 9:19 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, 9:19 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
6mph

NE · gust 17

Rain / Weather
0.02in

Snow

Temp
34°F

1°C · hum 98%

Pressure
28.32inHg

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
    0.54 in
    ↓ -7.5 hPa
  2. Tue · Oct 27
    4 AM → 8 AM
    MAYBE
    A front passing through
    52° / 34°F
    4 mph · SEgust 24
    0.00 in
    ↓ -11.5 hPa
  3. Wed · Oct 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    59° / 46°F
    6 mph · SWgust 17
    0.06 in
    ↑ +5.6 hPa
  4. Thu · Oct 29
    4 AM → 8 AM
    MAYBE
    A front passing through
    61° / 43°F
    4 mph · Sgust 17
    0.00 in
    ↑ +4.0 hPa
  5. Fri · Oct 30
    4 AM → 8 AM
    MAYBE
    A front passing through
    59° / 43°F
    10 mph · NEgust 27
    0.00 in
    ↓ -1.9 hPa
  6. Sat · Oct 31
    5 AM → 9 AM
    MAYBE
    A front passing through
    66° / 50°F
    7 mph · SEgust 29
    0.01 in
    ↓ -7.3 hPa
  7. Sun · Nov 1
    3 PM → 7 PM
    MAYBE
    A front passing through
    66° / 52°F
    7 mph · SWgust 27
    0.00 in
    ↓ -0.2 hPa

Last 3 days

Recent context — what just happened

Pressure
Unstable
+21.0 hPa over 72h
Rain
Light rain
0.47 in totallast 72h
Wind
Gusty
11 mph · gust 42 · E
Temperature
Cooler
-27.7°F over 72h82–34°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.