10-day forecast for Keystone, PA: 35° to 66°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
66°
Best day: Monday, October 26
57°
Worst day: Saturday, October 17
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1860° / 35°0
Morning36°feels 36°
Afternoon55°feels 52°
Evening47°feels 47°
Overnight38°feels 35°
60 °
Keystone, Sunday, 18 October
Clear. High 60°, low 35°.
Pressure30.59 inHg
Wind3.2 mph N
Humidity44%
Visibility6.2 mi
Dew point32°
Mon, 1965° / 39°0
Morning40°feels 37°
Afternoon64°feels 62°
Evening53°feels 51°
Overnight41°feels 41°
65 °
Keystone, Monday, 19 October
Clear. High 65°, low 39°.
Pressure30.42 inHg
Wind5.8 mph N
Humidity50%
Visibility6.2 mi
Dew point41°
Tue, 2064° / 47°0
Morning47°feels 43°
Afternoon64°feels 62°
Evening56°feels 54°
Overnight48°feels 45°
64 °
Keystone, Tuesday, 20 October
Clear. High 64°, low 47°.
Pressure30.30 inHg
Wind10 mph N
Humidity55%
Visibility6.2 mi
Dew point45°
Wed, 2161° / 43°0
Morning43°feels 39°
Afternoon54°feels 52°
Evening58°feels 55°
Overnight47°feels 44°
61 °
Keystone, Wednesday, 21 October
Clear. High 61°, low 43°.
Pressure30.33 inHg
Wind7.6 mph N
Humidity57%
Visibility—
Dew point37°
Thu, 2262° / 40°0
Morning45°feels 42°
Afternoon56°feels 53°
Evening60°feels 57°
Overnight47°feels 44°
62 °
Keystone, Thursday, 22 October
Clear. High 62°, low 40°.
Pressure30.15 inHg
Wind9 mph N
Humidity54%
Visibility—
Dew point36°
Fri, 2360° / 43°0
Morning47°feels 45°
Afternoon56°feels 53°
Evening57°feels 55°
Overnight44°feels 43°
60 °
Keystone, Friday, 23 October
Partly cloudy. High 60°, low 43°.
Pressure30.24 inHg
Wind11.2 mph N
Humidity55%
Visibility—
Dew point38°
Sat, 2461° / 39°0
Morning44°feels 41°
Afternoon55°feels 52°
Evening57°feels 55°
Overnight44°feels 43°
61 °
Keystone, Saturday, 24 October
Clear. High 61°, low 39°.
Pressure30.42 inHg
Wind4.7 mph E
Humidity50%
Visibility—
Dew point34°
Sun, 2561° / 40°0
Morning44°feels 43°
Afternoon55°feels 53°
Evening59°feels 57°
Overnight46°feels 45°
61 °
Keystone, Sunday, 25 October
Partly cloudy. High 61°, low 40°.
Pressure30.30 inHg
Wind4 mph W
Humidity52%
Visibility—
Dew point35°
Mon, 2666° / 44°0
Morning48°feels 47°
Afternoon59°feels 57°
Evening63°feels 62°
Overnight53°feels 52°
66 °
Keystone, Monday, 26 October
Overcast. High 66°, low 44°.
Pressure30.15 inHg
Wind4.7 mph SW
Humidity55%
Visibility—
Dew point40°
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 Keystone, 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.