Grand Lake

Mercer County, OH

MAYBEConfidence · Low

Best bite window

Now → 2 PM (America/New_York)

Main reason

dry conditions across the window

Main risk

a front passing through

MAYBE on Grand Lake — light winds and dry conditions across the window 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 Grand Lake in Mercer County, OH is MAYBE, with the best four-hour window on Thu, Jul 23 from 10 AM to 2 PM (America/New_York). 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 4 mph out of the northeast, gusting to 6 mph, surface pressure near 990 hPa on a steady trend, and rainfall totaling 0.00 inches over the four hours. Air temperature in the window sits near 70 °F, with a dominant forecast of clear. Confidence in this read is low; it was generated July 23, 2026, 11:41 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, 11:41 AM UTCBUCKET 2026-07-23ENGINE 0.7.0

Conditions at a glance

Wind: 4mph
NE · gust 6
Rain / Weather: 0in
Clear
Temp: 70°F
21°C · hum 51%
Pressure: 29.23inHg
Steady

7-Day Fishing Forecast

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

Thu · Jul 23
Now → 2 PM
MAYBE
A front passing through
77° / 52°F
4 mph · NEgust 9
0.00 in
→ +1.3 hPa
Fri · Jul 24
4 AM → 8 AM
MAYBE
A front passing through
79° / 57°F
5 mph · Egust 14
0.00 in
↓ -2.6 hPa
Sat · Jul 25
7 AM → 11 AM
MAYBE
A front passing through
79° / 55°F
3 mph · SWgust 13
0.00 in
↓ -2.9 hPa
Sun · Jul 26
4 AM → 8 AM
MAYBE
A front passing through
88° / 66°F
6 mph · SWgust 22
0.39 in
↓ -5.4 hPa
Mon · Jul 27
2 PM → 6 PM
MAYBE
Rain in the window
88° / 66°F
12 mph · SWgust 35
1.07 in
↓ -7.8 hPa
Tue · Jul 28
4 AM → 8 AM
MAYBE
A front passing through
86° / 73°F
5 mph · SWgust 27
0.11 in
↑ +7.3 hPa
Wed · Jul 29
4 AM → 8 AM
MAYBE
A front passing through
82° / 64°F
4 mph · Ngust 23
0.00 in
↑ +4.8 hPa

Last 3 days

Recent context — what just happened

Pressure

Rising

+3.2 hPa over 72h

Rain

Dry stretch

0.02 in totallast 72h

Wind

Gusty

8 mph · gust 33 · W

Temperature

Cooler

-4.1°F over 72h86–57°F range

Weather-only read. Confidence is capped until local water data or feedback exists.

Nearby waters

McClintock Lake· Allen County, OH
Long Pool· Allen County, OH
Rainbow Lake· Adams County, IN
Decker Lake· Miami County, OH
Camp Wesley Lake· Logan County, OH
Kenan Pond· Champaign County, OH

Weather data by Open-Meteo — CC BY 4.0. Fishing Weather derives the fishing read.