10-day forecast for Keystone, PA: 33° 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 19
53°
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1966° / 40°0
Morning40°feels 37°
Afternoon63°feels 61°
Evening51°feels 49°
Overnight43°feels 43°
66 °
Keystone, Monday, 19 October
Clear. High 66°, low 40°.
Pressure30.42 inHg
Wind4.5 mph N
Humidity47%
Visibility6.2 mi
Dew point40°
Tue, 2064° / 46°0
Morning47°feels 43°
Afternoon64°feels 62°
Evening54°feels 52°
Overnight49°feels 45°
64 °
Keystone, Tuesday, 20 October
Clear. High 64°, low 46°.
Pressure30.30 inHg
Wind10.7 mph N
Humidity57%
Visibility6.2 mi
Dew point46°
Wed, 2159° / 41°0
Morning42°feels 37°
Afternoon59°feels 56°
Evening49°feels 49°
Overnight45°feels 40°
59 °
Keystone, Wednesday, 21 October
Clear. High 59°, low 41°.
Pressure30.33 inHg
Wind4.9 mph N
Humidity54%
Visibility6.2 mi
Dew point39°
Thu, 2264° / 38°0
Morning43°feels 40°
Afternoon56°feels 54°
Evening61°feels 59°
Overnight41°feels 39°
64 °
Keystone, Thursday, 22 October
Clear. High 64°, low 38°.
Pressure30.15 inHg
Wind11.4 mph N
Humidity49%
Visibility—
Dew point34°
Fri, 2353° / 40°0
Morning45°feels 40°
Afternoon49°feels 45°
Evening51°feels 48°
Overnight43°feels 39°
53 °
Keystone, Friday, 23 October
Clear. High 53°, low 40°.
Pressure30.36 inHg
Wind11.4 mph N
Humidity52%
Visibility—
Dew point31°
Sat, 2458° / 37°0
Morning42°feels 39°
Afternoon52°feels 49°
Evening56°feels 54°
Overnight43°feels 41°
58 °
Keystone, Saturday, 24 October
Clear. High 58°, low 37°.
Pressure30.62 inHg
Wind6.4 mph SE
Humidity48%
Visibility—
Dew point30°
Sun, 2560° / 41°0
Morning44°feels 42°
Afternoon54°feels 52°
Evening58°feels 57°
Overnight49°feels 47°
60 °
Keystone, Sunday, 25 October
Overcast. High 60°, low 41°.
Pressure30.45 inHg
Wind8.8 mph S
Humidity68%
Visibility—
Dew point41°
Mon, 2657° / 43°0
Morning49°feels 46°
Afternoon53°feels 50°
Evening53°feels 51°
Overnight44°feels 41°
57 °
Keystone, Monday, 26 October
Clear. High 57°, low 43°.
Pressure30.33 inHg
Wind9.4 mph NW
Humidity54%
Visibility—
Dew point36°
Tue, 2760° / 39°0
Morning43°feels 42°
Afternoon53°feels 50°
Evening58°feels 55°
Overnight48°feels 46°
60 °
Keystone, Tuesday, 27 October
Overcast. High 60°, low 39°.
Pressure30.27 inHg
Wind8.1 mph W
Humidity44%
Visibility—
Dew point29°
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.