As of 06:12 EDT

Weather in Keystone, PA

47°

Keystone, Saturday, 10 October, 06:12

Overcast. Feels like 44°. High 70°, low 47°.

Pressure30.33 inHg

Wind5.4 mph N

Humidity86%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Monthly outlook for Keystone, PA: average high 62.3°, average low 45.9°. That is 0.4° below the climate normal for October. Precipitation is expected on 7 days (about 3.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (77°), the coolest 20 October (32.7°).

62.3°/45.9°

Average high / low

−0.4°

Below normal

7 / 4

Wet days / normal

3.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	65.3°	64°	+0.7°
20 October – 29 October	57.3°	60.4°	-1.7°
30 October – 8 November	at normal	57.4°	—

October records over 66 years

88.7°2 October 2019All-time high

27.5°28 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Shiremanstown (9 mi).

Sun, 1162° / 50°

1.76

62 °

Keystone, Sunday, 11 October

Heavy rain. High 62°, low 50°.

Pressure30.18 inHg

Wind8.9 mph E

Humidity99%

Visibility1.1 mi

Dew point58°

Mon, 1271° / 56°

0.18

71 °

Keystone, Monday, 12 October

Rain. High 71°, low 56°.

Pressure29.83 inHg

Wind11 mph N

Humidity68%

Visibility6.2 mi

Dew point58°

Tue, 1377° / 55°

77 °

Keystone, Tuesday, 13 October

Overcast. High 77°, low 55°.

Pressure29.88 inHg

Wind7.5 mph S

Humidity67%

Visibility6.2 mi

Dew point61°

Wed, 1474° / 63°

74 °

Keystone, Wednesday, 14 October

Overcast. High 74°, low 63°.

Pressure29.91 inHg

Wind11.3 mph NW

Humidity69%

Visibility—

Dew point62°

Thu, 1561° / 47°

0.14

61 °

Keystone, Thursday, 15 October

Rain. High 61°, low 47°.

Pressure30.27 inHg

Wind12 mph N

Humidity53%

Visibility—

Dew point41°

Fri, 1671° / 50°

0.76

71 °

Keystone, Friday, 16 October

Rain. High 71°, low 50°.

Pressure30.03 inHg

Wind11.9 mph S

Humidity95%

Visibility—

Dew point53°

Sat, 1762° / 53°

0.28

62 °

Keystone, Saturday, 17 October

Rain. High 62°, low 53°.

Pressure29.97 inHg

Wind4.8 mph N

Humidity93%

Visibility—

Dew point60°

Sun, 1855° / 44°

0.41

55 °

Keystone, Sunday, 18 October

Rain. High 55°, low 44°.

Pressure30.00 inHg

Wind12.3 mph NW

Humidity65%

Visibility—

Dew point41°

Mon, 1951° / 37°

51 °

Keystone, Monday, 19 October

Mostly clear. High 51°, low 37°.

Pressure30.27 inHg

Wind12.7 mph N

Humidity55%

Visibility—

Dew point29°

Tue, 2054° / 33°

54 °

Keystone, Tuesday, 20 October

Clear. High 54°, low 33°.

Pressure30.45 inHg

Wind6.6 mph N

Humidity42%

Visibility—

Dew point22°

Wed, 2159° / 36°

59 °

Keystone, Wednesday, 21 October

Clear. High 59°, low 36°.

Pressure30.47 inHg

Wind2.9 mph NW

Humidity47%

Visibility—

Dew point29°

Thu, 2259° / 39°

59 °

Keystone, Thursday, 22 October

Clear. High 59°, low 39°.

Pressure30.47 inHg

Wind5.3 mph SE

Humidity53%

Visibility—

Dew point34°

Fri, 2359° / 40°

59 °

Keystone, Friday, 23 October

Clear. High 59°, low 40°.

Pressure30.36 inHg

Wind6.5 mph SE

Humidity72%

Visibility—

Dew point42°

Sat, 2457° / 44°

57 °

Keystone, Saturday, 24 October

Overcast. High 57°, low 44°.

Pressure30.24 inHg

Wind5.2 mph SE

Humidity73%

Visibility—

Dew point42°

Sun, 2556° / 43°

0.05

56 °

Keystone, Sunday, 25 October

Light rain. High 56°, low 43°.

Pressure29.88 inHg

Wind9.3 mph S

Humidity70%

Visibility—

Dew point43°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2659° / 45°

0.1

59 °

Keystone, Monday, 26 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.1 in

Chance of precipitation32%

Record high78° (1963)

Record low32° (1962)

Tue, 2760° / 45°

0.17

60 °

Keystone, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.17 in

Chance of precipitation28%

Record high80° (1963)

Record low31° (1976)

Wed, 2860° / 44°

0.1

60 °

Keystone, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.1 in

Chance of precipitation27%

Record high79° (1984)

Record low28° (1976)

Thu, 2958° / 43°

0.2

58 °

Keystone, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.2 in

Chance of precipitation25%

Record high72° (1971)

Record low30° (1965)

Fri, 3058° / 42°

0.11

58 °

Keystone, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.11 in

Chance of precipitation25%

Record high77° (2024)

Record low29° (2011)

Sat, 3159° / 43°

0.07

59 °

Keystone, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.07 in

Chance of precipitation27%

Record high81° (2024)

Record low30° (1988)

Sun, 0160° / 44°

0.06

60 °

Keystone, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.06 in

Chance of precipitation23%

Record high78° (1974)

Record low27° (2002)

Mon, 0259° / 44°

0.14

59 °

Keystone, Monday, 2 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.14 in

Chance of precipitation30%

Record high78° (1982)

Record low30° (2023)

Tue, 0359° / 43°

0.07

59 °

Keystone, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.07 in

Chance of precipitation28%

Record high77° (2003)

Record low32° (2002)

Wed, 0457° / 42°

0.08

57 °

Keystone, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.08 in

Chance of precipitation23%

Record high76° (2003)

Record low29° (2006)

Thu, 0557° / 42°

0.11

57 °

Keystone, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.11 in

Chance of precipitation27%

Record high76° (2022)

Record low27° (1991)

Fri, 0656° / 42°

0.06

56 °

Keystone, Friday, 6 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.06 in

Chance of precipitation30%

Record high80° (2024)

Record low27° (1967)

Sat, 0755° / 41°

0.08

55 °

Keystone, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.08 in

Chance of precipitation28%

Record high72° (1975)

Record low28° (1962)

Sun, 0855° / 40°

0.16

55 °

Keystone, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.16 in

Chance of precipitation18%

Record high74° (1975)

Record low27° (1960)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Keystone, PA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Keystone, PA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.