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 dry conditions across the window for this window. Watch a front passing through. Weather-only read (no on-water history calibrating this yet).

Next forecast window
MAYBE

Fri · Jul 24, 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 4 mph out of the west, gusting to 13 mph; surface pressure near 809 hPa on a steady trend; 0.00 inches of rain; and air temperature near 66 °F with overcast dominant. Confidence in this cached read is medium; it was generated July 23, 2026, 11:43 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 July 23, 2026, 11:43 AM UTCBUCKET 2026-07-23ENGINE 0.7.0

Conditions at a glance

Wind
4mph

W · gust 13

Rain / Weather
0in

Overcast

Temp
66°F

19°C · hum 69%

Pressure
23.89inHg

Steady

7-Day Fishing Forecast

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

  1. Thu · Jul 23
    Window passed
    MAYBE
    A front passing through
    81° / 61°F
    4 mph · Wgust 23
    0.04 in
    ↓ +0.7 hPa
  2. Fri · Jul 24
    4 AM → 8 AM
    MAYBE
    A front passing through
    93° / 63°F
    9 mph · NWgust 24
    0.00 in
    ↓ -3.7 hPa
  3. Sat · Jul 25
    4 AM → 8 AM
    MAYBE
    A front passing through
    97° / 72°F
    7 mph · SWgust 32
    0.00 in
    ↓ -1.3 hPa
  4. Sun · Jul 26
    8 AM → 12 PM
    MAYBE
    A front passing through
    99° / 75°F
    12 mph · NWgust 33
    0.00 in
    ↓ -2.0 hPa
  5. Mon · Jul 27
    10 AM → 2 PM
    MAYBE
    A front passing through
    91° / 68°F
    7 mph · NEgust 23
    0.01 in
    ↑ +3.5 hPa
  6. Tue · Jul 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    93° / 64°F
    4 mph · SWgust 19
    0.23 in
    ↓ -0.4 hPa
  7. Wed · Jul 29
    4 AM → 8 AM
    MAYBE
    A front passing through
    91° / 63°F
    6 mph · SWgust 20
    0.03 in
    ↓ +2.2 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+4.6 hPa over 72h
Rain
Dry stretch
0.02 in totallast 72h
Wind
Gusty
11 mph · gust 33 · E
Temperature
Cooler
-3.1°F over 72h97–63°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.