Lower Boulder Lake

Madison County, MT

MAYBEConfidence · Medium
Best bite window
Fri · Sep 11, 11 PM → 3 AM (America/Denver)
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Lower Boulder Lake — light winds and rising pressure after a passing system for this window. Watch a front passing through and pressure swinging. Weather-only read (no on-water history calibrating this yet).

Full read

The current fishing-weather read for Lower Boulder Lake in Madison County, MT is MAYBE, with the best four-hour window on Fri, Sep 11 from 11 PM to 3 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 northeast, gusting to 13 mph, surface pressure near 725 hPa on an unstable trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 32 °F, with a dominant forecast of overcast. Confidence in this read is medium; it was generated September 10, 2026, 1:21 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, 1:21 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
7mph

NE · gust 13

Rain / Weather
0in

Overcast

Temp
32°F

0°C · hum 85%

Pressure
21.41inHg

Unstable

7-Day Fishing Forecast

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

  1. Thu · Sep 10
    Window passed
    SKIP
    Extreme gusts
    61° / 39°F
    15 mph · SWgust 33
    0.00 in
    ↓ -11.1 hPa
  2. Fri · Sep 11
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 34°F
    10 mph · SWgust 34
    0.00 in
    ↑ +6.4 hPa
  3. Sat · Sep 12
    4 AM → 8 AM
    MAYBE
    A front passing through
    55° / 28°F
    4 mph · NEgust 17
    0.00 in
    ↓ -5.6 hPa
  4. Sun · Sep 13
    6 AM → 10 AM
    MAYBE
    A front passing through
    45° / 30°F
    5 mph · NEgust 34
    0.06 in
    ↑ +5.2 hPa
  5. Mon · Sep 14
    8 AM → 12 PM
    MAYBE
    A front passing through
    48° / 28°F
    7 mph · SWgust 19
    0.00 in
    ↓ +2.8 hPa
  6. Tue · Sep 15
    4 AM → 8 AM
    MAYBE
    A front passing through
    50° / 27°F
    4 mph · NEgust 9
    0.04 in
    ↓ +4.6 hPa
  7. Wed · Sep 16
    7 AM → 11 AM
    MAYBE
    A front passing through
    55° / 28°F
    3 mph · SWgust 5
    0.01 in
    ↓ -0.6 hPa

Last 3 days

Recent context — what just happened

Pressure
Rising
+12.8 hPa over 72h
Rain
Light rain
0.38 in totallast 72h
Wind
Gusty
14 mph · gust 34 · W
Temperature
Cooler
-4.5°F over 72h55–30°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.