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Portersville, PA · Butler County
Right Now
Mostly Clear
Water
59°
Wind
3 mph
SSW
Gusts
7 mph
Pressure
30.03
steady
Forecast - Mon, May 18
High / Low
86° / 63°
Wind
7 mph
gusts 24 mph
Precip
42%
UV
8
Sunrise
9:59 AM
Sunset
12:34 AM
Today Read
Lake ArthurWind read
Calm
7 mph avg
Water read
59°
Cool-water mix
Air range
63° / 86°
today
Precip
42%
watch timing
Today's forecast for Lake Arthur has calm wind, 63F to 86F air temperatures, 42% chance of precipitation, and 59F water.
The planner reads this page's water temp, forecast, fish species, solunar timing, reports, and imagery context so you can decide what to throw, when to go, and when to move.
Today's AI read
Active temps make wind edges, shallow cover, and feeding windows more important. Wind is not the main constraint, so timing and presentation can drive the plan. Check the solunar window against hourly wind and light.
Uses this lake data
Trip read from the AI planner
Green lightFishing Forecast
NEW
Major
6:45 PM - 9:15 PM
Minor
10:35 AM - 12:05 PM
Detailed temperature readings across your lake.
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Fish Species
20Water Temperature History
Current
64°
May 24
Low
32°
Dec 7
Average
56°
Last 12 Months
Warmest avg: July (78°F)
Coolest avg: December (32°F)
Rapid warming: May → June (+13°F)
Sharpest cooling: October → November (-20°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
12am - 11pm
Peak Wind
12 mph
3pm
Peak Gust
24 mph
highest gust
Pressure
30.06 inHg
rising
Visibility
14 mi
11% 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
3/5NEW
Water at 59°F -- good for cool-water species.
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.