Summit Reservoir

Lyman County, SD

MAYBEConfidence · Medium
Best bite window
Fri · Jul 24, 9 AM → 1 PM (America/Chicago)
Main reason
dry conditions across the window
Main risk
a front passing through

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

Full read

The current fishing-weather read for Summit Reservoir in Lyman County, SD is MAYBE, with the best four-hour window on Fri, Jul 24 from 9 AM to 1 PM (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 7 mph out of the south, gusting to 10 mph, surface pressure near 938 hPa on a rising trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 77 °F, with a dominant forecast of clear. Confidence in this read is medium; it was generated July 23, 2026, 11:25 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 July 23, 2026, 11:25 AM UTCBUCKET 2026-07-23ENGINE 0.7.0

Conditions at a glance

Wind
7mph

S · gust 10

Rain / Weather
0in

Clear

Temp
77°F

25°C · hum 75%

Pressure
27.70inHg

Rising

7-Day Fishing Forecast

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

  1. Thu · Jul 23
    Now → 4 PM
    MAYBE
    A front passing through
    72° / 63°F
    12 mph · Sgust 30
    0.02 in
    ↓ -3.9 hPa
  2. Fri · Jul 24
    9 AM → 1 PM
    MAYBE
    A front passing through
    95° / 63°F
    7 mph · Sgust 17
    0.00 in
    ↓ -7.3 hPa
  3. Sat · Jul 25
    4 AM → 8 AM
    MAYBE
    A front passing through
    109° / 79°F
    7 mph · Wgust 34
    0.00 in
    ↓ +0.6 hPa
  4. Sun · Jul 26
    6 PM → 10 PM
    MAYBE
    A front passing through
    111° / 82°F
    6 mph · NEgust 43
    0.00 in
    ↓ -7.3 hPa
  5. Mon · Jul 27
    5 AM → 9 AM
    MAYBE
    A front passing through
    104° / 79°F
    6 mph · Ngust 35
    0.02 in
    ↑ +4.5 hPa
  6. Tue · Jul 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    100° / 81°F
    9 mph · SEgust 21
    0.02 in
    ↓ +2.2 hPa
  7. Wed · Jul 29
    9 AM → 1 PM
    MAYBE
    A front passing through
    106° / 73°F
    7 mph · Wgust 21
    0.01 in
    ↓ -2.6 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+13.1 hPa over 72h
Rain
Light rain
0.10 in totallast 72h
Wind
Gusty
11 mph · gust 27 · NE
Temperature
Cooler
-16.0°F over 72h95–59°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.