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Portersville, PA · Butler County
Right Now
Mostly Cloudy
Water
72°
Wind
0 mph
WNW
Gusts
1 mph
Pressure
29.86
steady
Forecast - Sun, Jun 21
High / Low
76° / 51°
Wind
2 mph
gusts 7 mph
Precip
0%
UV
7
Sunrise
9:48 AM
Sunset
12:55 AM
Every forecast metric for the week ahead — plus AI-picked best days for fishing, boating, swimming, and paddling.
Instant recommendations based on wind, precip, pressure, solunar, and temperature.
Best for Fishing
Mon, Mon, Jun 29
Mon, Jun 29 scores 78/100 — Solunar 5/5, Wind 6 mph.
Best for Boating
Sun, Sun, Jun 21
Sun, Jun 21 scores 90/100 — Wind 5 mph, Rain 0%.
Best for Swimming
Mon, Mon, Jun 29
Mon, Jun 29 scores 80/100 — Air 81°F, Rain 0%.
Best for Paddling
Sun, Sun, Jun 21
Sun, Jun 21 scores 85/100 — Wind 5 mph, Rain 0%.
Ask the AI assistant about this week:
Swipe to see all 9 days
| Metric | Sun21 | Mon22 | Tue23 | Wed24 | Thu25 | Fri26 | Sat27 | Sun28 | Mon29 |
|---|---|---|---|---|---|---|---|---|---|
| Condition | Partly Cloudy | Rain | Mostly Clear | Mostly Clear | Drizzle | Drizzle | Drizzle | Partly Cloudy | Mostly Cloudy |
| High / Low | 76°/51° | 72°/58° | 75°/56° | 76°/52° | 80°/59° | 79°/62° | 78°/58° | 81°/60° | 81°/64° |
| Precip | 0% | 96% | 21% | 0% | 57% | 50% | 61% | 0% | 0% |
| Wind | 5 mphgust 7 | 11 mphgust 26 | 10 mphgust 20 | 5 mphgust 11 | 8 mphgust 16 | 7 mphgust 17 | 5 mphgust 13 | 4 mphgust 14 | 6 mphgust 11 |
| Pressure | 29.92" stable | 29.88" falling | 30.02" rising | 30.07" rising | 29.98" falling | 29.96" falling | 29.97" stable | 30.01" rising | 30.11" rising |
| UV Index | 7 | 4 | 8 | 7 | 6 | 6 | 6 | 7 | 5 |
| Sunrise | 9:48 AM | 9:48 AM | 9:49 AM | 9:49 AM | 9:49 AM | 9:50 AM | 9:50 AM | 9:51 AM | 9:51 AM |
| Sunset | 12:55 AM | 12:55 AM | 12:56 AM | 12:56 AM | 12:56 AM | 12:56 AM | 12:56 AM | 12:56 AM | 12:56 AM |
| Bite Rating | 3/5first quarter | 2/5first quarter | 2/5first quarter | 3/5first quarter | 2/5waxing gibbous | 2/5waxing gibbous | 3/5waxing gibbous | 2/5waxing gibbous | 5/5FULL |
Today Read
Lake ArthurWind read
Calm
2 mph avg
Water read
72°
Warm-water bite
Air range
51° / 76°
today
Precip
0%
low concern
Today's forecast for Lake Arthur has calm wind, 51F to 76F air temperatures, 0% chance of precipitation, and 72F water.
AI read · today
Warm water pushes the plan toward oxygen, shade, depth changes, and low light. The planning constraint is finding the right window.
Reads 9 live data sources for this lake — tap a stat or ask anything to see its work.
Fishing Forecast
first quarter
Major
10:50 PM - 1:20 AM
Minor
4:45 PM - 6:15 PM
Detailed temperature readings across your lake.
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Fish Species
20Water Temperature History
Current
75°
Jun 28
Low
32°
Dec 7
Average
57°
Last 12 Months
Warmest avg: July (78°F)
Coolest avg: December (32°F)
Rapid warming: April → May (+11°F)
Sharpest cooling: October → November (-20°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
4am - 3am
Peak Wind
5 mph
11pm
Peak Gust
7 mph
highest gust
Pressure
29.90 inHg
rising
Visibility
8 mi
13% clouds
Tap chart for details, swipe left or right for different days.Tap chart for details • Swipe for different days
Pressure stability helps plan windows
Tap chart points for pressure details
Nearby Lakes
Fishing Forecast
3/5first quarter
Water at 72°F -- warm-water species active.
Fish Species
20Nearby Lakes
FAQ
Lake Arthur covers 3225.00 acres (5.04 square miles)
Lake Arthur is located in Portersville, Butler County, PA. It is accessible to the public for outdoor activities.