Lower Crystal Springs Reservoir

San Mateo County, CA

GOConfidence · 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

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

Next forecast window
GO

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

Full read

The latest cached fishing-weather read for Lower Crystal Springs Reservoir in San Mateo County, CA 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 7 mph out of the southwest, gusting to 11 mph; surface pressure near 999 hPa on a steady trend; 0.00 inches of rain; and air temperature near 72 °F with clear dominant. Confidence in this cached read is medium; it was generated September 10, 2026, 1:18 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, 1:18 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
7mph

SW · gust 11

Rain / Weather
0in

Clear

Temp
72°F

22°C · hum 53%

Pressure
29.50inHg

Steady

7-Day Fishing Forecast

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

  1. Thu · Sep 10
    Window passed
    GO
    Dry conditions across the window
    79° / 57°F
    7 mph · SWgust 19
    0.00 in
    ↓ -0.1 hPa
  2. Fri · Sep 11
    4 AM → 8 AM
    GO
    Dry conditions across the window
    64° / 55°F
    7 mph · SWgust 21
    0.00 in
    ↓ -2.5 hPa
  3. Sat · Sep 12
    4 AM → 8 AM
    GO
    Dry conditions across the window
    70° / 59°F
    6 mph · SWgust 24
    0.00 in
    ↑ +3.1 hPa
  4. Sun · Sep 13
    8 AM → 12 PM
    GO
    Dry conditions across the window
    77° / 57°F
    3 mph · Ngust 11
    0.00 in
    ↓ -2.5 hPa
  5. Mon · Sep 14
    4 AM → 8 AM
    GO
    Dry conditions across the window
    82° / 59°F
    4 mph · SWgust 11
    0.00 in
    → -0.2 hPa
  6. Tue · Sep 15
    4 AM → 8 AM
    GO
    Dry conditions across the window
    77° / 57°F
    5 mph · SWgust 9
    0.00 in
    ↑ +2.7 hPa
  7. Wed · Sep 16
    4 AM → 8 AM
    GO
    Dry conditions across the window
    81° / 57°F
    3 mph · SWgust 7
    0.00 in
    ↑ +1.7 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+0.3 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Calm wind
6 mph · gust 16 · W
Temperature
Warmer
+20.2°F over 72h99–54°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.