Grass Valley Reservoir

Washington County, UT

MAYBEConfidence · Low
Best bite window
The highlighted window has passed. This read is still based on the latest cached weather; use the 7-Day forecast below for the next window.
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Grass Valley 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).

Next forecast window
MAYBE

Tue · Oct 27, 4 AM → 8 AM (America/Denver)

Full read

The latest cached fishing-weather read for Grass Valley Reservoir in Washington County, UT is MAYBE. Its highlighted window has passed, so use the 7-day forecast below for the next available window. The main factor in its favor was dry conditions across the window, while the main watch-out was a front passing through. Its cached forecast evidence included wind near 7 mph out of the north, gusting to 7 mph; surface pressure near 793 hPa on a rising trend; 0.00 inches of rain; and air temperature near 37 °F with clear dominant. Confidence in this cached read is low; it was generated October 26, 2026, 9:55 AM UTC, and reads refresh on a daily cadence. This is a weather-only read built from forecast weather; it does not yet use on-water reports, and confidence is capped until local water data or feedback exists.

UPDATED October 26, 2026, 9:55 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
7mph

N · gust 7

Rain / Weather
0in

Clear

Temp
37°F

3°C · hum 54%

Pressure
23.42inHg

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
    55° / 37°F
    7 mph · Ngust 13
    0.00 in
    ↓ -4.6 hPa
  2. Tue · Oct 27
    4 AM → 8 AM
    MAYBE
    A front passing through
    57° / 41°F
    6 mph · Ngust 19
    0.00 in
    ↓ -3.9 hPa
  3. Wed · Oct 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    55° / 41°F
    5 mph · Sgust 14
    0.00 in
    → +2.8 hPa
  4. Thu · Oct 29
    4 AM → 8 AM
    MAYBE
    A front passing through
    57° / 43°F
    5 mph · Egust 11
    0.00 in
    ↓ -3.7 hPa
  5. Fri · Oct 30
    4 AM → 8 AM
    MAYBE
    A front passing through
    54° / 43°F
    7 mph · SEgust 19
    0.00 in
    ↓ -0.1 hPa
  6. Sat · Oct 31
    4 AM → 8 AM
    MAYBE
    A front passing through
    52° / 43°F
    7 mph · SEgust 16
    0.09 in
    ↑ +2.8 hPa
  7. Sun · Nov 1
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 41°F
    4 mph · Sgust 12
    0.07 in
    ↓ +1.6 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+5.1 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Gusty
6 mph · gust 27 · NW
Temperature
Cooler
-0.5°F over 72h48–34°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.