Grassy Trail Reservoir

Carbon County, UT

MAYBEConfidence · Medium
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 Grassy Trail 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

Fri · Sep 11, 4 AM → 8 AM (America/Denver)

Full read

The latest cached fishing-weather read for Grassy Trail Reservoir in Carbon 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 5 mph out of the north, gusting to 11 mph; surface pressure near 743 hPa on a rising trend; 0.00 inches of rain; and air temperature near 59 °F with clear dominant. Confidence in this cached read is medium; it was generated September 10, 2026, 1:22 PM 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 September 10, 2026, 1:22 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
5mph

N · gust 11

Rain / Weather
0in

Clear

Temp
59°F

15°C · hum 12%

Pressure
21.94inHg

Rising

7-Day Fishing Forecast

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

  1. Thu · Sep 10
    Window passed
    MAYBE
    A front passing through
    72° / 48°F
    5 mph · Ngust 19
    0.00 in
    ↓ -8.3 hPa
  2. Fri · Sep 11
    4 AM → 8 AM
    MAYBE
    A front passing through
    68° / 54°F
    5 mph · NEgust 36
    0.02 in
    ↓ -2.2 hPa
  3. Sat · Sep 12
    8 AM → 12 PM
    MAYBE
    A front passing through
    72° / 52°F
    7 mph · Sgust 20
    0.15 in
    ↓ -2.5 hPa
  4. Sun · Sep 13
    4 AM → 8 AM
    MAYBE
    A front passing through
    70° / 52°F
    8 mph · Sgust 32
    0.00 in
    ↓ +2.8 hPa
  5. Mon · Sep 14
    8 AM → 12 PM
    MAYBE
    A front passing through
    66° / 46°F
    4 mph · Sgust 17
    0.05 in
    ↓ +0.2 hPa
  6. Tue · Sep 15
    4 AM → 8 AM
    MAYBE
    A front passing through
    66° / 50°F
    3 mph · Sgust 17
    0.02 in
    ↓ +2.6 hPa
  7. Wed · Sep 16
    7 AM → 11 AM
    MAYBE
    A front passing through
    68° / 50°F
    4 mph · SWgust 13
    0.00 in
    → +4.9 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+5.7 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Calm wind
9 mph · gust 22 · W
Temperature
Warmer
+7.2°F over 72h72–45°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.