Lower Crystal Springs Reservoir

San Mateo County, CA

GOConfidence · Medium
Best bite window
Fri · Jul 24, 11 PM → 3 AM (America/Los_Angeles)
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).

Full read

The current fishing-weather read for Lower Crystal Springs Reservoir in San Mateo County, CA is GO, with the best four-hour window on Fri, Jul 24 from 11 PM to 3 AM (America/Los_Angeles). The main factor in its favor is dry conditions across the window, with no loud weather risk flagged for this window. During that window the forecast calls for wind near 7 mph out of the southwest, gusting to 11 mph, surface pressure near 997 hPa on a steady trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 61 °F, with a dominant forecast of fog. Confidence in this read is medium; it was generated July 23, 2026, 11:12 AM UTC, and reads refresh on a daily cadence. This is a weather-only read built from forecast weather alone; it does not yet use on-water reports, and confidence is capped until local water data or feedback exists.

UPDATED July 23, 2026, 11:12 AM UTCBUCKET 2026-07-23ENGINE 0.7.0

Conditions at a glance

Wind
7mph

SW · gust 11

Rain / Weather
0in

Fog

Temp
61°F

16°C · hum 82%

Pressure
29.44inHg

Steady

7-Day Fishing Forecast

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

  1. Thu · Jul 23
    Window passed
    GO
    Dry conditions across the window
    68° / 55°F
    7 mph · Wgust 22
    0.00 in
    ↓ -1.3 hPa
  2. Fri · Jul 24
    4 AM → 8 AM
    GO
    Dry conditions across the window
    64° / 54°F
    9 mph · SWgust 22
    0.00 in
    ↓ -1.3 hPa
  3. Sat · Jul 25
    4 AM → 8 AM
    GO
    Dry conditions across the window
    79° / 59°F
    6 mph · SWgust 12
    0.00 in
    → +0.3 hPa
  4. Sun · Jul 26
    4 AM → 8 AM
    GO
    Dry conditions across the window
    81° / 59°F
    6 mph · SWgust 13
    0.00 in
    ↑ +0.8 hPa
  5. Mon · Jul 27
    4 AM → 8 AM
    GO
    Dry conditions across the window
    82° / 57°F
    6 mph · SWgust 14
    0.00 in
    ↓ -1.3 hPa
  6. Tue · Jul 28
    4 AM → 8 AM
    GO
    Dry conditions across the window
    82° / 59°F
    6 mph · SWgust 12
    0.00 in
    ↓ -2.6 hPa
  7. Wed · Jul 29
    4 AM → 8 AM
    GO
    Dry conditions across the window
    77° / 59°F
    6 mph · SWgust 11
    0.00 in
    → +0.5 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+4.1 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Gusty
9 mph · gust 27 · W
Temperature
Warmer
+3.1°F over 72h86–55°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.