10-day forecast for Chambersburg, PA: 53° to 90°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Sunday, August 9
90° · 0.33 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1088° / 70°0.07
Morning75°feels 75°
Afternoon81°feels 81°
Evening80°feels 83°
Overnight72°feels 72°
88 °
Chambersburg, Monday, 10 August
Rain. High 88°, low 70°.
Pressure30.00 inHg
Wind9 mph W
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 1190° / 67°0.33
Morning70°feels 71°
Afternoon88°feels 88°
Evening78°feels 78°
Overnight70°feels 71°
90 °
Chambersburg, Tuesday, 11 August
Heavy rain. High 90°, low 67°.
Pressure29.94 inHg
Wind11.8 mph NW
Humidity53%
Visibility6.2 mi
Dew point64°
Wed, 1289° / 65°0.02
Morning70°feels 71°
Afternoon86°feels 89°
Evening76°feels 77°
Overnight69°feels 69°
89 °
Chambersburg, Wednesday, 12 August
Light rain. High 89°, low 65°.
Pressure29.80 inHg
Wind10.5 mph W
Humidity58%
Visibility6.2 mi
Dew point65°
Thu, 1383° / 66°0.24
Morning73°feels 73°
Afternoon81°feels 79°
Evening70°feels 69°
Overnight69°feels 70°
83 °
Chambersburg, Thursday, 13 August
Rain. High 83°, low 66°.
Pressure29.85 inHg
Wind16.2 mph NW
Humidity32%
Visibility—
Dew point48°
Fri, 1478° / 57°0
Morning66°feels 65°
Afternoon76°feels 75°
Evening66°feels 65°
Overnight63°feels 62°
78 °
Chambersburg, Friday, 14 August
Overcast. High 78°, low 57°.
Pressure30.06 inHg
Wind11.8 mph NW
Humidity36%
Visibility—
Dew point46°
Sat, 1578° / 55°0
Morning64°feels 64°
Afternoon75°feels 74°
Evening66°feels 65°
Overnight60°feels 59°
78 °
Chambersburg, Saturday, 15 August
Partly cloudy. High 78°, low 55°.
Pressure30.18 inHg
Wind11.4 mph NW
Humidity31%
Visibility—
Dew point41°
Sun, 1676° / 53°0
Morning64°feels 63°
Afternoon75°feels 74°
Evening65°feels 64°
Overnight60°feels 59°
76 °
Chambersburg, Sunday, 16 August
Overcast. High 76°, low 53°.
Pressure30.15 inHg
Wind6.2 mph SW
Humidity31%
Visibility—
Dew point42°
Mon, 1782° / 59°0
Morning69°feels 68°
Afternoon80°feels 80°
Evening70°feels 70°
Overnight67°feels 67°
82 °
Chambersburg, Monday, 17 August
Partly cloudy. High 82°, low 59°.
Pressure29.97 inHg
Wind6.9 mph E
Humidity42%
Visibility—
Dew point54°
Tue, 1887° / 62°0
Morning71°feels 71°
Afternoon84°feels 83°
Evening74°feels 73°
Overnight69°feels 69°
87 °
Chambersburg, Tuesday, 18 August
Mostly clear. High 87°, low 62°.
Pressure30.00 inHg
Wind5 mph NW
Humidity33%
Visibility—
Dew point51°
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 Chambersburg, 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.