10-day forecast for Harleysville, PA: 55° to 88°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Sunday, August 9
87° · 0.15 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1088° / 71°0.03
Morning74°feels 74°
Afternoon83°feels 83°
Evening76°feels 77°
Overnight73°feels 73°
88 °
Harleysville, Monday, 10 August
Light rain. High 88°, low 71°.
Pressure30.00 inHg
Wind5.5 mph W
Humidity48%
Visibility6.2 mi
Dew point64°
Tue, 1187° / 70°0.15
Morning71°feels 72°
Afternoon87°feels 87°
Evening76°feels 77°
Overnight76°feels 77°
87 °
Harleysville, Tuesday, 11 August
Rain. High 87°, low 70°.
Pressure29.88 inHg
Wind11.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point64°
Wed, 1282° / 69°0.02
Morning73°feels 74°
Afternoon82°feels 84°
Evening76°feels 77°
Overnight72°feels 72°
82 °
Harleysville, Wednesday, 12 August
Light rain. High 82°, low 69°.
Pressure29.77 inHg
Wind8.7 mph NW
Humidity63%
Visibility6.2 mi
Dew point66°
Thu, 1382° / 65°0.06
Morning74°feels 75°
Afternoon80°feels 80°
Evening70°feels 69°
Overnight73°feels 74°
82 °
Harleysville, Thursday, 13 August
Light rain. High 82°, low 65°.
Pressure29.77 inHg
Wind13.6 mph NW
Humidity38%
Visibility—
Dew point53°
Fri, 1477° / 57°0
Morning64°feels 63°
Afternoon74°feels 73°
Evening65°feels 64°
Overnight60°feels 59°
77 °
Harleysville, Friday, 14 August
Overcast. High 77°, low 57°.
Pressure30.00 inHg
Wind11.3 mph NW
Humidity38%
Visibility—
Dew point46°
Sat, 1577° / 55°0
Morning64°feels 62°
Afternoon74°feels 73°
Evening66°feels 64°
Overnight60°feels 59°
77 °
Harleysville, Saturday, 15 August
Clear. High 77°, low 55°.
Pressure30.12 inHg
Wind13.4 mph NW
Humidity36%
Visibility—
Dew point44°
Sun, 1679° / 56°0
Morning66°feels 65°
Afternoon77°feels 76°
Evening70°feels 69°
Overnight64°feels 63°
79 °
Harleysville, Sunday, 16 August
Overcast. High 79°, low 56°.
Pressure30.12 inHg
Wind6.2 mph NW
Humidity34%
Visibility—
Dew point45°
Mon, 1782° / 61°0
Morning70°feels 69°
Afternoon80°feels 79°
Evening70°feels 70°
Overnight65°feels 65°
82 °
Harleysville, Monday, 17 August
Partly cloudy. High 82°, low 61°.
Pressure30.00 inHg
Wind10.4 mph SW
Humidity39%
Visibility—
Dew point52°
Tue, 1885° / 62°0
Morning72°feels 72°
Afternoon83°feels 83°
Evening74°feels 74°
Overnight72°feels 72°
85 °
Harleysville, Tuesday, 18 August
Mostly clear. High 85°, low 62°.
Pressure30.00 inHg
Wind8.2 mph W
Humidity42%
Visibility—
Dew point57°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Harleysville, PA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.