Rainbow Lakes

Boulder County, CO

MAYBEConfidence · Medium
Best bite window
Fri · Sep 11, 6 AM → 10 AM (America/Denver)
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Rainbow Lakes — 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).

Full read

The current fishing-weather read for Rainbow Lakes in Boulder County, CO is MAYBE, with the best four-hour window on Fri, Sep 11 from 6 AM to 10 AM (America/Denver). The main factor in its favor is dry conditions across the window, and the main watch-out is a front passing through. During that window the forecast calls for wind near 7 mph out of the southwest, gusting to 24 mph, surface pressure near 691 hPa on a rising trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 48 °F, with a dominant forecast of overcast. Confidence in this read is medium; it was generated September 10, 2026, 1:29 PM 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 September 10, 2026, 1:29 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
7mph

SW · gust 24

Rain / Weather
0in

Overcast

Temp
48°F

9°C · hum 15%

Pressure
20.41inHg

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
    63° / 43°F
    12 mph · NWgust 34
    0.00 in
    ↓ -10.6 hPa
  2. Fri · Sep 11
    6 AM → 10 AM
    MAYBE
    A front passing through
    61° / 45°F
    7 mph · SWgust 44
    0.02 in
    ↓ +0.4 hPa
  3. Sat · Sep 12
    4 AM → 8 AM
    MAYBE
    A front passing through
    68° / 45°F
    5 mph · Wgust 19
    0.00 in
    ↓ +0.5 hPa
  4. Sun · Sep 13
    4 AM → 8 AM
    MAYBE
    A front passing through
    70° / 45°F
    7 mph · Wgust 30
    0.02 in
    ↓ -3.8 hPa
  5. Mon · Sep 14
    4 AM → 8 AM
    MAYBE
    A front passing through
    61° / 39°F
    7 mph · Wgust 22
    0.23 in
    ↑ +9.1 hPa
  6. Tue · Sep 15
    4 AM → 8 AM
    MAYBE
    A front passing through
    61° / 41°F
    4 mph · SEgust 19
    0.17 in
    ↓ +1.6 hPa
  7. Wed · Sep 16
    4 AM → 8 AM
    MAYBE
    A front passing through
    63° / 37°F
    7 mph · Wgust 18
    0.07 in
    ↑ +7.6 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+12.3 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Gusty
14 mph · gust 50 · W
Temperature
Cooler
-4.3°F over 72h66–41°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.