As of 19:12 EST

Weather in St. Marys, PA

38°

St. Marys, Thursday, 12 November, 19:12

Overcast. Feels like 38°. High 44°, low 38°.

Pressure29.59 inHg

Wind1 mph W

Humidity92%

Visibility3.4 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for St. Marys, PA: average high 48.5°, average low 36.1°. That is 3.1° above the climate normal for November. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 24 November (60.1°), the coolest 27 November (29°).

48.5°/36.1°

Average high / low

+3.1°

Above normal

4 / 6

Wet days / normal

1.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 November – 21 November	46.3°	43.5°	+1.5°
22 November – 1 December	52.3°	40.8°	+6.4°
2 December – 11 December	at normal	36.3°	—

November records over 66 years

72.5°5 November 2024All-time high

2.1°22 November 2018All-time low

Climate normals and records are computed from the nearest reference point — Fox (10 mi).

Fri, 1338° / 32°

0.05

38 °

St. Marys, Friday, 13 November

Snow. High 38°, low 32°.

Pressure29.80 inHg

Wind9.4 mph N

Humidity80%

Visibility6.2 mi

Dew point25°

Sat, 1440° / 31°

0.02

40 °

St. Marys, Saturday, 14 November

Light rain. High 40°, low 31°.

Pressure29.94 inHg

Wind10.4 mph NW

Humidity89%

Visibility6.2 mi

Dew point32°

Sun, 1539° / 33°

0.02

39 °

St. Marys, Sunday, 15 November

Light rain. High 39°, low 33°.

Pressure30.27 inHg

Wind9.1 mph NW

Humidity76%

Visibility6.2 mi

Dew point28°

Mon, 1644° / 32°

44 °

St. Marys, Monday, 16 November

Overcast. High 44°, low 32°.

Pressure30.47 inHg

Wind7.4 mph NW

Humidity68%

Visibility6.2 mi

Dew point30°

Tue, 1748° / 29°

48 °

St. Marys, Tuesday, 17 November

Partly cloudy. High 48°, low 29°.

Pressure30.53 inHg

Wind6.3 mph W

Humidity82%

Visibility—

Dew point34°

Wed, 1851° / 31°

51 °

St. Marys, Wednesday, 18 November

Clear. High 51°, low 31°.

Pressure30.47 inHg

Wind5.2 mph W

Humidity64%

Visibility—

Dew point30°

Thu, 1950° / 34°

50 °

St. Marys, Thursday, 19 November

Overcast. High 50°, low 34°.

Pressure30.42 inHg

Wind9 mph SW

Humidity63%

Visibility—

Dew point31°

Fri, 2055° / 42°

55 °

St. Marys, Friday, 20 November

Partly cloudy. High 55°, low 42°.

Pressure30.36 inHg

Wind10.9 mph W

Humidity62%

Visibility—

Dew point36°

Sat, 2154° / 39°

54 °

St. Marys, Saturday, 21 November

Partly cloudy. High 54°, low 39°.

Pressure30.33 inHg

Wind5.4 mph SW

Humidity66%

Visibility—

Dew point40°

Sun, 2257° / 43°

57 °

St. Marys, Sunday, 22 November

Partly cloudy. High 57°, low 43°.

Pressure30.18 inHg

Wind9.8 mph W

Humidity54%

Visibility—

Dew point38°

Mon, 2354° / 43°

54 °

St. Marys, Monday, 23 November

Overcast. High 54°, low 43°.

Pressure30.30 inHg

Wind13.4 mph SE

Humidity63%

Visibility—

Dew point41°

Tue, 2460° / 48°

0.61

60 °

St. Marys, Tuesday, 24 November

Rain. High 60°, low 48°.

Pressure29.91 inHg

Wind17.6 mph S

Humidity92%

Visibility—

Dew point53°

Wed, 2548° / 37°

48 °

St. Marys, Wednesday, 25 November

Light rain. High 48°, low 37°.

Pressure30.21 inHg

Wind12.2 mph W

Humidity59%

Visibility—

Dew point33°

Thu, 2649° / 36°

49 °

St. Marys, Thursday, 26 November

Overcast. High 49°, low 36°.

Pressure30.15 inHg

Wind9.7 mph SE

Humidity60%

Visibility—

Dew point34°

Fri, 2746° / 29°

0.06

46 °

St. Marys, Friday, 27 November

Snow. High 46°, low 29°.

Pressure30.33 inHg

Wind12.3 mph W

Humidity68%

Visibility—

Dew point27°

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

Sat, 2841° / 30°

0.22

41 °

St. Marys, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high41°

Average low30°

Average precipitation0.22 in

Chance of precipitation60%

Record high63° (1990)

Record low13° (2002)

Sun, 2939° / 27°

0.1

39 °

St. Marys, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.1 in

Chance of precipitation35%

Record high58° (2006)

Record low7° (2013)

Mon, 3039° / 28°

0.11

39 °

St. Marys, Monday, 30 November

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.11 in

Chance of precipitation40%

Record high63° (1991)

Record low4° (1976)

Tue, 0138° / 27°

0.15

38 °

St. Marys, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high38°

Average low27°

Average precipitation0.15 in

Chance of precipitation47%

Record high60° (2006)

Record low4° (1976)

Wed, 0238° / 26°

0.12

38 °

St. Marys, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high38°

Average low26°

Average precipitation0.12 in

Chance of precipitation45%

Record high62° (1982)

Record low0° (1971)

Thu, 0338° / 25°

0.13

38 °

St. Marys, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high38°

Average low25°

Average precipitation0.13 in

Chance of precipitation38%

Record high63° (1982)

Record low-1° (1976)

Fri, 0438° / 25°

0.1

38 °

St. Marys, Friday, 4 December

Climate normal for this date — 60-year average.

Average high38°

Average low25°

Average precipitation0.1 in

Chance of precipitation40%

Record high62° (2012)

Record low-8° (1966)

Sat, 0537° / 25°

0.11

37 °

St. Marys, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high37°

Average low25°

Average precipitation0.11 in

Chance of precipitation47%

Record high64° (1982)

Record low1° (1963)

Sun, 0636° / 24°

0.15

36 °

St. Marys, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high36°

Average low24°

Average precipitation0.15 in

Chance of precipitation50%

Record high63° (1998)

Record low3° (2008)

Mon, 0735° / 24°

0.1

35 °

St. Marys, Monday, 7 December

Climate normal for this date — 60-year average.

Average high35°

Average low24°

Average precipitation0.1 in

Chance of precipitation42%

Record high61° (1998)

Record low9° (2007)

Tue, 0835° / 24°

0.08

35 °

St. Marys, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high35°

Average low24°

Average precipitation0.08 in

Chance of precipitation30%

Record high57° (1966)

Record low4° (2008)

Wed, 0936° / 23°

0.16

36 °

St. Marys, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high36°

Average low23°

Average precipitation0.16 in

Chance of precipitation42%

Record high59° (1966)

Record low-7° (2002)

Thu, 1036° / 24°

0.17

36 °

St. Marys, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high36°

Average low24°

Average precipitation0.17 in

Chance of precipitation45%

Record high56° (2024)

Record low0° (1995)

Fri, 1135° / 23°

0.15

35 °

St. Marys, Friday, 11 December

Climate normal for this date — 60-year average.

Average high35°

Average low23°

Average precipitation0.15 in

Chance of precipitation43%

Record high57° (2021)

Record low1° (1977)

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 St. Marys, 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 St. Marys, 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.