Necessity Reservoir

Powder River County, MT

MAYBEConfidence · Medium
Best bite window
Tue · Oct 27, 4 AM → 8 AM (America/Denver)
Main reason
dry conditions across the window
Main risk
a front passing through

MAYBE on Necessity Reservoir — 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 Necessity Reservoir in Powder River County, MT is MAYBE, with the best four-hour window on Tue, Oct 27 from 4 AM to 8 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 5 mph out of the southeast, gusting to 16 mph, surface pressure near 877 hPa on an unstable trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 37 °F, with a dominant forecast of overcast. Confidence in this read is medium; it was generated October 26, 2026, 9:18 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 October 26, 2026, 9:18 AM UTCBUCKET 2026-10-26ENGINE 0.7.0

Conditions at a glance

Wind
5mph

SE · gust 16

Rain / Weather
0in

Overcast

Temp
37°F

3°C · hum 82%

Pressure
25.90inHg

Unstable

7-Day Fishing Forecast

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

  1. Mon · Oct 26
    Now → 4 PM
    SKIP
    Sustained high wind
    48° / 34°F
    16 mph · SEgust 34
    0.13 in
    ↓ -13.9 hPa
  2. Tue · Oct 27
    4 AM → 8 AM
    MAYBE
    A front passing through
    55° / 36°F
    5 mph · SEgust 35
    0.00 in
    ↑ +0.2 hPa
  3. Wed · Oct 28
    4 AM → 8 AM
    MAYBE
    A front passing through
    57° / 37°F
    4 mph · Sgust 14
    0.00 in
    ↑ +5.2 hPa
  4. Thu · Oct 29
    10 AM → 2 PM
    MAYBE
    A front passing through
    54° / 34°F
    3 mph · Ngust 23
    0.00 in
    ↑ +5.8 hPa
  5. Fri · Oct 30
    4 AM → 8 AM
    SKIP
    Extreme gusts
    64° / 34°F
    11 mph · SEgust 32
    0.00 in
    ↓ -12.4 hPa
  6. Sat · Oct 31
    8 AM → 12 PM
    MAYBE
    A front passing through
    61° / 41°F
    4 mph · Ngust 17
    0.00 in
    ↑ +2.8 hPa
  7. Sun · Nov 1
    9 AM → 1 PM
    MAYBE
    A front passing through
    52° / 41°F
    3 mph · Ngust 14
    0.08 in
    ↓ -0.1 hPa

Last 3 days

Recent context — what just happened

Pressure
Unstable
+22.9 hPa over 72h
Rain
Light rain
0.20 in totallast 72h
Wind
Gusty
12 mph · gust 37 · SE
Temperature
Cooler
-17.6°F over 72h75–30°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.