Blue Marsh Lake Fishing Outlook

Officially Blue Marsh Lake (Tulpehocken Creek)

Pennsylvania

See today's and tomorrow's fishing outlook for Blue Marsh Lake, including best fishing times and solunar activity windows. Days 3–7 of the week-ahead outlook are included with Lake Insights Pro.

Today

Saturday, September 12

Good 3/5

A solid fishing day with a worthwhile activity window and generally fishable conditions.

Best Window

7:45 AM–8:45 AM

Minor activity overlaps sunrise or sunset

Secondary Window

7:20 PM–8:20 PM

Major

  • 1:04 PM – 3:04 PM
  • 12:49 AM – 2:49 AM

Minor

  • 7:46 AM – 8:46 AM
  • 7:20 PM – 8:20 PM

Next activity window Major · 12:49 AM

Tomorrow

Sunday, September 13

Poor 1/5

A solid fishing day with a worthwhile activity window and generally fishable conditions.

Thunderstorms may make fishing unsafe despite favorable activity timing.

Best Window

6:30 PM–8:45 PM

Minor activity overlaps sunrise or sunset

Secondary Window

1:35 AM–3:35 AM

Major

  • 1:39 AM – 3:39 AM
  • 1:55 PM – 3:55 PM

Minor

  • 8:59 AM – 9:59 AM
  • 7:50 PM – 8:50 PM

7-Day Fishing Outlook

Days 3–7 Pro

Compare the week and find the strongest fishing windows.

Plan your best fishing days.

Get the complete 7-Day Fishing Outlook with Lake Insights Pro.

  • Days 3–7 of the week-ahead outlook
  • Best days & times across the week
  • Detailed fishing windows and conditions
Unlock the Full Outlook

Fishing Outlook combines traditional activity periods, sunrise and sunset timing, wind, rain chance, and weather conditions to help compare fishing days and times. It does not predict whether fish will bite.

Sun, Moon & Solunar Details

Solunar Forecast

Blue Marsh Lake · September 12, 2026

Fish activity forecast for today.

Today's Rating

★★★★★

Excellent

Strong night bite expected.

Best Window

12:49 AM – 2:49 AM

Major Activity Period

Next Activity

7:46 AM – 8:46 AM

Minor Activity Period

Fish Activity

PoorGood
1:49 AM
Moon Underfoot
6:42 AM
Sunrise
12h 36m
Daylight
7:18 PM
Sunset
2:04 PM
Moon Overhead

Pro Tip  The night major period (12:49 AM–2:49 AM) is driven by the moon directly underfoot at 1:49 AM — feeding pressure peaks then, even away from first and last light.

Moon Phase Calendar

Sun

Sep 6

Last Quarter (23%)

23%

Mon

Sep 7

Waning Crescent (14%)

14%

Tue

Sep 8

Waning Crescent (7%)

7%

Wed

Sep 9

Waning Crescent (2%)

2%

Thu

Sep 10

Waning Crescent (0%)

0%

Fri

Sep 11

New Moon (1%)

1%

Sat

Sep 12

Waxing Crescent (1%)

1%

Full Moon:Sep 26New Moon:Oct 10

All times are local (EDT) and based on your selected location.

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