10-day forecast for Cornwall, PA: 52° to 86°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Sunday, August 9
86° · 0.38 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0986° / 70°0
Morning74°feels 75°
Afternoon85°feels 86°
Evening75°feels 75°
Overnight70°feels 71°
86 °
Cornwall, Sunday, 9 August
Clear. High 86°, low 70°.
Pressure30.00 inHg
Wind8.4 mph W
Humidity57%
Visibility6.2 mi
Dew point68°
Mon, 1086° / 69°0.22
Morning72°feels 73°
Afternoon81°feels 84°
Evening80°feels 80°
Overnight72°feels 71°
86 °
Cornwall, Monday, 10 August
Rain. High 86°, low 69°.
Pressure30.03 inHg
Wind8.9 mph W
Humidity74%
Visibility6.2 mi
Dew point69°
Tue, 1186° / 67°0.38
Morning72°feels 73°
Afternoon83°feels 87°
Evening78°feels 79°
Overnight67°feels 68°
86 °
Cornwall, Tuesday, 11 August
Rain. High 86°, low 67°.
Pressure29.94 inHg
Wind7.6 mph W
Humidity69%
Visibility6.2 mi
Dew point68°
Wed, 1281° / 68°0.19
Morning69°feels 70°
Afternoon73°feels 74°
Evening73°feels 74°
Overnight69°feels 71°
81 °
Cornwall, Wednesday, 12 August
Light rain. High 81°, low 68°.
Pressure29.80 inHg
Wind10.3 mph W
Humidity86%
Visibility6.2 mi
Dew point68°
Thu, 1383° / 64°0.01
Morning74°feels 75°
Afternoon80°feels 82°
Evening66°feels 66°
Overnight65°feels 65°
83 °
Cornwall, Thursday, 13 August
Light rain. High 83°, low 64°.
Pressure29.77 inHg
Wind14.5 mph NW
Humidity55%
Visibility—
Dew point64°
Fri, 1475° / 59°0
Morning64°feels 64°
Afternoon72°feels 71°
Evening64°feels 63°
Overnight59°feels 58°
75 °
Cornwall, Friday, 14 August
Light rain. High 75°, low 59°.
Pressure30.00 inHg
Wind12 mph N
Humidity45%
Visibility—
Dew point49°
Sat, 1575° / 52°0
Morning62°feels 61°
Afternoon71°feels 70°
Evening63°feels 62°
Overnight59°feels 57°
75 °
Cornwall, Saturday, 15 August
Clear. High 75°, low 52°.
Pressure30.21 inHg
Wind10 mph N
Humidity44%
Visibility—
Dew point47°
Sun, 1675° / 52°0
Morning62°feels 61°
Afternoon73°feels 72°
Evening64°feels 63°
Overnight60°feels 59°
75 °
Cornwall, Sunday, 16 August
Clear. High 75°, low 52°.
Pressure30.30 inHg
Wind6.6 mph NE
Humidity44%
Visibility—
Dew point49°
Mon, 1778° / 55°0
Morning66°feels 65°
Afternoon78°feels 78°
Evening73°feels 73°
Overnight68°feels 68°
78 °
Cornwall, Monday, 17 August
Overcast. High 78°, low 55°.
Pressure30.12 inHg
Wind11.6 mph SE
Humidity60%
Visibility—
Dew point61°
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 Cornwall, 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.