As of 08:53 EDT

Weather in Jefferson, PA

41°

Jefferson, Monday, 19 October, 08:53

Clear. Feels like 39°. High 67°, low 34°.

Pressure30.47 inHg

Wind3.2 mph NE

Humidity97%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Jefferson, PA: average high 56.7°, average low 35.6°. That is 0.9° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 20 October (67.4°), the coolest 30 October (25.8°).

56.7°/35.6°

Average high / low

−0.9°

Below normal

0 / 6

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
19 October – 28 October	60.4°	58.9°	+0.8°
29 October – 7 November	50.6°	56°	-3°
8 November – 17 November	at normal	50.7°	—

October records over 66 years

86.5°1 October 2019All-time high

25.3°20 October 1972All-time low

Climate normals and records are computed from the nearest reference point — Brackenridge (13 mi).

Tue, 2067° / 37°

67 °

Jefferson, Tuesday, 20 October

Partly cloudy. High 67°, low 37°.

Pressure30.36 inHg

Wind4.1 mph NE

Humidity62%

Visibility6.2 mi

Dew point46°

Wed, 2162° / 37°

62 °

Jefferson, Wednesday, 21 October

Clear. High 62°, low 37°.

Pressure30.30 inHg

Wind2.1 mph NE

Humidity57%

Visibility6.2 mi

Dew point41°

Thu, 2260° / 38°

60 °

Jefferson, Thursday, 22 October

Overcast. High 60°, low 38°.

Pressure30.21 inHg

Wind7.8 mph NW

Humidity68%

Visibility6.2 mi

Dew point49°

Fri, 2354° / 37°

54 °

Jefferson, Friday, 23 October

Partly cloudy. High 54°, low 37°.

Pressure30.39 inHg

Wind7.3 mph NE

Humidity42%

Visibility—

Dew point29°

Sat, 2455° / 33°

55 °

Jefferson, Saturday, 24 October

Clear. High 55°, low 33°.

Pressure30.53 inHg

Wind7 mph E

Humidity41%

Visibility—

Dew point29°

Sun, 2560° / 39°

60 °

Jefferson, Sunday, 25 October

Overcast. High 60°, low 39°.

Pressure30.42 inHg

Wind7.6 mph S

Humidity46%

Visibility—

Dew point36°

Mon, 2665° / 48°

65 °

Jefferson, Monday, 26 October

Partly cloudy. High 65°, low 48°.

Pressure30.24 inHg

Wind8.7 mph W

Humidity56%

Visibility—

Dew point47°

Tue, 2763° / 48°

63 °

Jefferson, Tuesday, 27 October

Overcast. High 63°, low 48°.

Pressure30.12 inHg

Wind9.7 mph SW

Humidity58%

Visibility—

Dew point46°

Wed, 2851° / 35°

0.03

51 °

Jefferson, Wednesday, 28 October

Light rain. High 51°, low 35°.

Pressure30.18 inHg

Wind10.7 mph N

Humidity86%

Visibility—

Dew point39°

Thu, 2944° / 27°

44 °

Jefferson, Thursday, 29 October

Clear. High 44°, low 27°.

Pressure30.27 inHg

Wind6.6 mph NE

Humidity41%

Visibility—

Dew point19°

Fri, 3045° / 26°

45 °

Jefferson, Friday, 30 October

Clear. High 45°, low 26°.

Pressure30.39 inHg

Wind8.3 mph N

Humidity41%

Visibility—

Dew point20°

Sat, 3148° / 27°

48 °

Jefferson, Saturday, 31 October

Clear. High 48°, low 27°.

Pressure30.59 inHg

Wind5.2 mph E

Humidity37%

Visibility—

Dew point20°

Sun, 0153° / 29°

53 °

Jefferson, Sunday, 1 November

Overcast. High 53°, low 29°.

Pressure30.50 inHg

Wind4.5 mph E

Humidity34%

Visibility—

Dew point22°

Mon, 0256° / 34°

56 °

Jefferson, Monday, 2 November

Overcast. High 56°, low 34°.

Pressure30.39 inHg

Wind4.1 mph S

Humidity39%

Visibility—

Dew point29°

Tue, 0358° / 40°

58 °

Jefferson, Tuesday, 3 November

Overcast. High 58°, low 40°.

Pressure30.24 inHg

Wind8.3 mph SW

Humidity45%

Visibility—

Dew point34°

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

Wed, 0455° / 40°

0.13

55 °

Jefferson, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.13 in

Chance of precipitation33%

Record high75° (2003)

Record low25° (1991)

Thu, 0555° / 41°

0.11

55 °

Jefferson, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.11 in

Chance of precipitation40%

Record high78° (2024)

Record low21° (1991)

Fri, 0654° / 40°

0.09

54 °

Jefferson, Friday, 6 November

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.09 in

Chance of precipitation33%

Record high73° (2022)

Record low26° (1995)

Sat, 0753° / 39°

0.13

53 °

Jefferson, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.13 in

Chance of precipitation38%

Record high72° (1996)

Record low27° (1967)

Sun, 0853° / 38°

0.11

53 °

Jefferson, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.11 in

Chance of precipitation28%

Record high72° (2020)

Record low25° (1967)

Mon, 0954° / 39°

0.12

54 °

Jefferson, Monday, 9 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.12 in

Chance of precipitation35%

Record high73° (1975)

Record low23° (1976)

Tue, 1053° / 39°

0.17

53 °

Jefferson, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.17 in

Chance of precipitation40%

Record high74° (2020)

Record low21° (2017)

Wed, 1151° / 38°

0.16

51 °

Jefferson, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.16 in

Chance of precipitation35%

Record high68° (1964)

Record low19° (2017)

Thu, 1250° / 36°

0.14

50 °

Jefferson, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.14 in

Chance of precipitation40%

Record high68° (1964)

Record low20° (2019)

Fri, 1349° / 35°

0.06

49 °

Jefferson, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.06 in

Chance of precipitation37%

Record high67° (1989)

Record low13° (2019)

Sat, 1449° / 36°

0.11

49 °

Jefferson, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.11 in

Chance of precipitation28%

Record high68° (1994)

Record low19° (1986)

Sun, 1550° / 36°

0.14

50 °

Jefferson, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.14 in

Chance of precipitation48%

Record high67° (2005)

Record low19° (1996)

Mon, 1649° / 36°

0.14

49 °

Jefferson, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.14 in

Chance of precipitation40%

Record high68° (1988)

Record low20° (1967)

Tue, 1748° / 35°

0.12

48 °

Jefferson, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high48°

Average low35°

Average precipitation0.12 in

Chance of precipitation35%

Record high65° (2021)

Record low21° (2014)

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 Jefferson, 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 Jefferson, 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.