Where to fish

  • Forecast
  • Catches

Mine

  • Favorites

Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
ForecastCatchesFavorites
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2163 · 92c14a40

We use cookies for analytics and advertising. Cookies necessary for the site to function are always kept. Learn more

United States / Pennsylvania / Grass Lake

Bite forecast: Grass Lake

  • 32 acres
Loading map…

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    74/100high activity

    Cloudy: 55–79 °F

  2. WednesdaySeptember 9weather-based forecast
    71/100high activity

    Drizzle: 64–91 °F

  3. ThursdaySeptember 3weather-based forecast
    63/100high activity

    Clear: 68–86 °F

Grass Lake (Pennsylvania) — a spot well known among anglers. About 13 ha in area. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

Loading map…

Bite calendar

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
Yellow perchCoho salmonMuskellungePikeSmallmouth bassWalleyeWhite bassBrook troutBlack crappieBluegillCarpChannel catfishFlathead catfishLake troutSteelheadWhite crappieWhitefishChinook salmonLargemouth bassRainbow trout

Black crappie

5/10 · Fair

Hourly activity

0:006:0012:0018:0023:00
Bite activity:highmediumlow

The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after.

Peak bite hours

Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

Tactics

Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.

Lures

The water's turning murky — go with bright, noisy lures: small jig or minnow bait.

Gear

It's a hot day — a hat, sunglasses, and plenty of water are a must. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.

Summary

An average day — best chances during peak windows.

How this forecast is calculated

Why this forecast

The computed water temperature is around 71 °F — inside the 57–75 °F comfort range for Black crappie, so baseline activity is high.

Computed water temperature by month; the green band is the 57–75 °F comfort rangecomfort 57–75 °F71 °F
JFMAMJJASOND

Black crappie works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.

The day: daylight hours and when Black crappie feeds0:0012:0024:00

Pressure is flat: it moves no more than 0.00 inHg over the day, so the weather isn't shifting today's bite.

Pressure through the day, 0.00 inHg change
00:00 · 29.9223:00 · 29.90 inHg

One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.

Feeding windows on the day scale0:0012:0024:00

September is an active season for Black crappie here.

JFMAMJJASOND

These are the same values the bite curve above was computed from. How the forecast works

4 SepFriday, September 4
+75°

Cloudy · feels like +81°

Low / high
+63°…+78°
Precipitation
0.00 in
Wind
8 mph W
Cloud cover
100%
Humidity
85%
Pressure
29.91 inHg
00:00+69°—4 mphsouthwest wind, 4 mph88%9%
01:00+69°—3 mphwest wind, 3 mph90%49%
02:00+68°—3 mphsouthwest wind, 3 mph90%100%
03:00+67°—3 mphsouthwest wind, 3 mph89%100%
04:00+67°—2 mphsouthwest wind, 2 mph88%100%
05:00+67°0.09 in1 mphsouth wind, 1 mph92%100%
06:00+67°—2 mphnorth wind, 2 mph91%100%
07:00+67°—2 mphsouth wind, 2 mph89%100%
08:00+68°—1 mphnortheast wind, 1 mph92%100%
09:00+70°—1 mphsouthwest wind, 1 mph92%100%
10:00+74°—6 mphsouthwest wind, 6 mph87%100%
11:00+73°0.10 in9 mphwest wind, 9 mph90%100%
12:00+75°—8 mphwest wind, 8 mph85%100%
13:00+77°—8 mphwest wind, 8 mph82%100%
14:00+74°—7 mphwest wind, 7 mph83%100%
15:00+73°—2 mphsouthwest wind, 2 mph89%100%
16:00+77°—3 mphwest wind, 3 mph81%81%
17:00+78°—3 mphnorthwest wind, 3 mph77%100%
18:00+76°0.01 in5 mphnorth wind, 5 mph82%91%
19:00+72°0.01 in4 mphsouth wind, 4 mph89%100%
20:00+69°—4 mphsoutheast wind, 4 mph95%100%
21:00+65°—4 mphnortheast wind, 4 mph98%100%
22:00+64°—2 mphnortheast wind, 2 mph98%100%
23:00+63°—1 mphnorthwest wind, 1 mph98%10%
+78°+71°+63°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Friday, September 4
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:34
Sunset
19:32
Day length
12 h 58 min
Sunshine hours
2 h 36 min
UV index
5
moderate
Moon
Last quarter
Moonrise
23:44
Moonset
15:00

The day is 3 min shorter than yesterday.

Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

Solunar feeding periods

+14% in the windowFriday, September 4
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major05:51–07:51Moon overhead
  • Minor14:30–15:30Moonset
  • Major18:22–20:22Moon underfoot
  • Minor23:14–00:00Moonrise

The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.

What are solunar periods?

Nearby water bodies

  • LakeDeep Lake2 mi
  • LakeSand Spring2 mi
  • PondLittle Deer Pond3 mi
  • LakeWest Emerald Lake3 mi
  • PondDeer Pond3 mi
  • PondLong Pond3 mi
  • LakeMountain Top Lake3 mi
  • LakeEast Emerald Lake4 mi
  • LakeCrescent Lake4 mi
  • LakeIndian Mountain Lake4 mi