Heinz Lake

Mackinac County, MI

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
falling pressure ahead of a system
Main risk
a front passing through

GO on Heinz Lake — light winds and falling pressure ahead of a system for this window. Watch a front passing through. Weather-only read (no on-water history calibrating this yet).

Next forecast window
GO

Fri · Sep 11, Now → 8 AM (America/Detroit)

Full read

The latest cached fishing-weather read for Heinz Lake in Mackinac County, MI 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 falling pressure ahead of a system, while the main watch-out was a front passing through. Its cached forecast evidence included wind near 6 mph out of the northwest, gusting to 18 mph; surface pressure near 989 hPa on a falling trend; 0.00 inches of rain; and air temperature near 64 °F with clear dominant. Confidence in this cached read is medium; it was generated September 10, 2026, 1:19 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, 1:19 PM UTCBUCKET 2026-09-10ENGINE 0.7.0

Conditions at a glance

Wind
6mph

NW · gust 18

Rain / Weather
0in

Clear

Temp
64°F

18°C · hum 51%

Pressure
29.21inHg

Falling

7-Day Fishing Forecast

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

  1. Thu · Sep 10
    Window passed
    GO
    A front passing through
    68° / 52°F
    6 mph · NWgust 19
    0.00 in
    ↑ +4.2 hPa
  2. Fri · Sep 11
    Now → 8 AM
    GO
    A front passing through
    70° / 55°F
    7 mph · SWgust 35
    0.00 in
    ↓ -5.3 hPa
  3. Sat · Sep 12
    2 PM → 6 PM
    MAYBE
    A front passing through
    72° / 59°F
    12 mph · SWgust 34
    0.01 in
    ↑ +3.6 hPa
  4. Sun · Sep 13
    2 PM → 6 PM
    GO
    A front passing through
    63° / 50°F
    7 mph · Wgust 22
    0.02 in
    ↑ +8.8 hPa
  5. Mon · Sep 14
    4 AM → 8 AM
    GO
    A front passing through
    66° / 46°F
    6 mph · NEgust 30
    0.30 in
    ↓ -11.4 hPa
  6. Tue · Sep 15
    7 AM → 11 AM
    MAYBE
    A front passing through
    68° / 54°F
    11 mph · NWgust 38
    0.28 in
    ↑ +13.0 hPa
  7. Wed · Sep 16
    4 AM → 8 AM
    GO
    A front passing through
    59° / 50°F
    7 mph · Ngust 21
    0.00 in
    → +1.1 hPa

Last 3 days

Recent context — what just happened

Pressure
Falling
-8.7 hPa over 72h
Rain
Dry stretch
0.00 in totallast 72h
Wind
Gusty
7 mph · gust 36 · S
Temperature
Warmer
+4.7°F over 72h79–54°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.