John W Griffen Reservoir

Laramie County, WY

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 John W Griffen 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 John W Griffen Reservoir in Laramie County, WY 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 west, gusting to 13 mph; surface pressure near 806 hPa on a rising trend; 0.00 inches of rain; and air temperature near 68 °F with overcast dominant. Confidence in this cached read is medium; it was generated September 10, 2026, 1:30 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, 1:30 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
7mph

W · gust 13

Rain / Weather
0in

Overcast

Temp
68°F

20°C · hum 11%

Pressure
23.80inHg

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
    82° / 52°F
    7 mph · Wgust 23
    0.00 in
    ↓ -8.7 hPa
  2. Fri · Sep 11
    4 AM → 8 AM
    MAYBE
    A front passing through
    81° / 54°F
    9 mph · Wgust 43
    0.00 in
    ↓ +0.1 hPa
  3. Sat · Sep 12
    5 AM → 9 AM
    MAYBE
    A front passing through
    77° / 52°F
    7 mph · Ngust 39
    0.04 in
    ↓ +0.7 hPa
  4. Sun · Sep 13
    4 AM → 8 AM
    MAYBE
    A front passing through
    86° / 59°F
    8 mph · Sgust 37
    0.01 in
    ↓ -2.5 hPa
  5. Mon · Sep 14
    4 AM → 8 AM
    MAYBE
    A front passing through
    82° / 57°F
    11 mph · NWgust 28
    0.36 in
    ↑ +7.7 hPa
  6. Tue · Sep 15
    7 PM → 11 PM
    MAYBE
    A front passing through
    59° / 55°F
    13 mph · Sgust 29
    0.38 in
    ↓ +1.6 hPa
  7. Wed · Sep 16
    4 AM → 8 AM
    MAYBE
    A front passing through
    64° / 52°F
    12 mph · SWgust 22
    0.21 in
    ↑ +8.7 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+10.3 hPa over 72h
Rain
Light rain
0.09 in totallast 72h
Wind
Gusty
11 mph · gust 28 · W
Temperature
Cooler
-6.5°F over 72h82–50°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.