Gem Lake

Jefferson County, MO

GOConfidence · 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

GO on Gem Lake — light winds and steady pressure trend for this window. Weather-only read (no on-water history calibrating this yet).

Next forecast window
GO

Tue · Oct 27, 5 AM → 9 AM (America/Chicago)

Full read

The latest cached fishing-weather read for Gem Lake in Jefferson County, MO is GO. 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. Its cached forecast evidence included wind near 4 mph out of the southwest, gusting to 12 mph; surface pressure near 1005 hPa on a rising trend; 0.00 inches of rain; and air temperature near 55 °F with overcast dominant. Confidence in this cached read is low; it was generated October 26, 2026, 9:27 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, 9:27 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
4mph

SW · gust 12

Rain / Weather
0in

Overcast

Temp
55°F

13°C · hum 68%

Pressure
29.68inHg

Rising

7-Day Fishing Forecast

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

  1. Mon · Oct 26
    Window passed
    GO
    Dry conditions across the window
    77° / 52°F
    4 mph · SWgust 12
    0.00 in
    ↓ -2.7 hPa
  2. Tue · Oct 27
    5 AM → 9 AM
    GO
    Dry conditions across the window
    77° / 52°F
    4 mph · Sgust 11
    0.00 in
    ↓ -1.2 hPa
  3. Wed · Oct 28
    7 AM → 11 AM
    GO
    Dry conditions across the window
    81° / 59°F
    4 mph · SEgust 22
    0.00 in
    ↓ -0.7 hPa
  4. Thu · Oct 29
    12 PM → 4 PM
    GO
    Dry conditions across the window
    82° / 61°F
    7 mph · SWgust 28
    0.00 in
    ↓ 0.0 hPa
  5. Fri · Oct 30
    4 AM → 8 AM
    GO
    Dry conditions across the window
    77° / 63°F
    4 mph · Sgust 6
    0.00 in
    ↓ -0.2 hPa
  6. Sat · Oct 31
    6 PM → 10 PM
    GO
    Dry conditions across the window
    64° / 61°F
    4 mph · SEgust 14
    0.20 in
    ↓ -2.7 hPa
  7. Sun · Nov 1
    5 PM → 9 PM
    GO
    Dry conditions across the window
    70° / 61°F
    4 mph · Ngust 11
    0.38 in
    ↓ -2.2 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+3.5 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Calm wind
3 mph · gust 12 · S
Temperature
Warmer
+3.2°F over 72h81–46°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.