Grassy Hills Reservoir

Owyhee County, ID

MAYBEConfidence · Low
Best bite window
Tue · Oct 27, 5 AM → 9 AM (America/Boise)
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Grassy Hills 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 Grassy Hills Reservoir in Owyhee County, ID is MAYBE, with the best four-hour window on Tue, Oct 27 from 5 AM to 9 AM (America/Boise). 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 southwest, gusting to 9 mph, surface pressure near 822 hPa on a rising trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 30 °F, with a dominant forecast of overcast. Confidence in this read is low; it was generated October 26, 2026, 9:37 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, 9:37 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
7mph

SW · gust 9

Rain / Weather
0in

Overcast

Temp
30°F

-1°C · hum 73%

Pressure
24.27inHg

Rising

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
    57° / 36°F
    13 mph · Sgust 30
    0.00 in
    ↑ +5.0 hPa
  2. Tue · Oct 27
    5 AM → 9 AM
    MAYBE
    A front passing through
    48° / 30°F
    7 mph · SWgust 16
    0.00 in
    ↓ -5.3 hPa
  3. Wed · Oct 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    54° / 34°F
    6 mph · Sgust 15
    0.00 in
    ↓ +0.1 hPa
  4. Thu · Oct 29
    4 AM → 8 AM
    MAYBE
    A front passing through
    57° / 36°F
    6 mph · Sgust 25
    0.00 in
    ↓ -6.8 hPa
  5. Fri · Oct 30
    7 AM → 11 AM
    MAYBE
    A front passing through
    48° / 39°F
    7 mph · SWgust 26
    0.28 in
    ↑ +5.2 hPa
  6. Sat · Oct 31
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 37°F
    4 mph · SEgust 5
    0.00 in
    ↓ +0.7 hPa
  7. Sun · Nov 1
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 34°F
    7 mph · Sgust 17
    0.00 in
    ↑ +5.7 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+9.2 hPa over 72h
Rain
Light rain
0.22 in totallast 72h
Wind
Gusty
9 mph · gust 27 · SW
Temperature
Cooler
-3.1°F over 72h55–30°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.