As of 01:12 EST

Weather in St. Marys, OH

40°

St. Marys, Friday, 13 November, 01:12

Overcast. Feels like 33°. High 44°, low 35°.

Pressure29.80 inHg

Wind10.4 mph N

Humidity92%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for St. Marys, OH: average high 50.9°, average low 37.4°. That is 1.8° above the climate normal for November. Precipitation is expected on 2 days (about 2.9 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 22 November (63.1°), the coolest 27 November (26.8°).

50.9°/37.4°

Average high / low

+1.8°

Above normal

2 / 6

Wet days / normal

2.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 November – 22 November	53°	48.4°	+2.6°
23 November – 2 December	47.3°	45°	+1.3°
3 December – 12 December	at normal	40.1°	—

November records over 66 years

76.6°1 November 2016All-time high

3.4°13 November 2019All-time low

Climate normals and records are computed from the nearest reference point — Maria Stein (11 mi).

Sat, 1445° / 30°

45 °

St. Marys, Saturday, 14 November

Overcast. High 45°, low 30°.

Pressure30.21 inHg

Wind11.8 mph NW

Humidity64%

Visibility6.2 mi

Dew point30°

Sun, 1545° / 37°

45 °

St. Marys, Sunday, 15 November

Overcast. High 45°, low 37°.

Pressure30.45 inHg

Wind9.6 mph N

Humidity62%

Visibility6.2 mi

Dew point30°

Mon, 1648° / 35°

48 °

St. Marys, Monday, 16 November

Mostly clear. High 48°, low 35°.

Pressure30.56 inHg

Wind3.6 mph SW

Humidity61%

Visibility6.2 mi

Dew point33°

Tue, 1752° / 33°

52 °

St. Marys, Tuesday, 17 November

Clear. High 52°, low 33°.

Pressure30.53 inHg

Wind5.1 mph S

Humidity55%

Visibility—

Dew point33°

Wed, 1855° / 35°

55 °

St. Marys, Wednesday, 18 November

Clear. High 55°, low 35°.

Pressure30.42 inHg

Wind8.1 mph S

Humidity50%

Visibility—

Dew point34°

Thu, 1958° / 40°

58 °

St. Marys, Thursday, 19 November

Overcast. High 58°, low 40°.

Pressure30.21 inHg

Wind17.1 mph SW

Humidity42%

Visibility—

Dew point33°

Fri, 2059° / 45°

59 °

St. Marys, Friday, 20 November

Partly cloudy. High 59°, low 45°.

Pressure30.36 inHg

Wind9.7 mph SW

Humidity51%

Visibility—

Dew point39°

Sat, 2162° / 46°

62 °

St. Marys, Saturday, 21 November

Overcast. High 62°, low 46°.

Pressure30.24 inHg

Wind12.5 mph SW

Humidity52%

Visibility—

Dew point42°

Sun, 2263° / 47°

63 °

St. Marys, Sunday, 22 November

Overcast. High 63°, low 47°.

Pressure30.12 inHg

Wind9.9 mph SW

Humidity47%

Visibility—

Dew point40°

Mon, 2361° / 49°

61 °

St. Marys, Monday, 23 November

Overcast. High 61°, low 49°.

Pressure29.94 inHg

Wind15 mph SW

Humidity57%

Visibility—

Dew point44°

Tue, 2459° / 47°

1.7

59 °

St. Marys, Tuesday, 24 November

Heavy rain. High 59°, low 47°.

Pressure29.68 inHg

Wind23.9 mph S

Humidity88%

Visibility—

Dew point55°

Wed, 2544° / 32°

1.12

44 °

St. Marys, Wednesday, 25 November

Snow. High 44°, low 32°.

Pressure30.03 inHg

Wind16.4 mph N

Humidity67%

Visibility—

Dew point28°

Thu, 2635° / 28°

0.02

35 °

St. Marys, Thursday, 26 November

Light snow. High 35°, low 28°.

Pressure30.36 inHg

Wind11.5 mph NW

Humidity65%

Visibility—

Dew point23°

Fri, 2738° / 27°

38 °

St. Marys, Friday, 27 November

Overcast. High 38°, low 27°.

Pressure30.45 inHg

Wind13.9 mph S

Humidity41%

Visibility—

Dew point15°

Sat, 2847° / 33°

47 °

St. Marys, Saturday, 28 November

Overcast. High 47°, low 33°.

Pressure30.18 inHg

Wind15.5 mph S

Humidity63%

Visibility—

Dew point33°

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

Sun, 2943° / 30°

0.07

43 °

St. Marys, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high43°

Average low30°

Average precipitation0.07 in

Chance of precipitation32%

Record high65° (1998)

Record low11° (1976)

Mon, 3045° / 31°

0.12

45 °

St. Marys, Monday, 30 November

Climate normal for this date — 60-year average.

Average high45°

Average low31°

Average precipitation0.12 in

Chance of precipitation38%

Record high64° (1991)

Record low11° (1976)

Tue, 0143° / 29°

0.12

43 °

St. Marys, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high43°

Average low29°

Average precipitation0.12 in

Chance of precipitation37%

Record high65° (1970)

Record low12° (1964)

Wed, 0242° / 29°

0.11

42 °

St. Marys, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.11 in

Chance of precipitation28%

Record high69° (1982)

Record low3° (1966)

Thu, 0342° / 29°

0.09

42 °

St. Marys, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.09 in

Chance of precipitation37%

Record high69° (1982)

Record low-3° (1966)

Fri, 0441° / 28°

0.1

41 °

St. Marys, Friday, 4 December

Climate normal for this date — 60-year average.

Average high41°

Average low28°

Average precipitation0.1 in

Chance of precipitation33%

Record high65° (1998)

Record low-2° (1966)

Sat, 0541° / 28°

0.11

41 °

St. Marys, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high41°

Average low28°

Average precipitation0.11 in

Chance of precipitation33%

Record high66° (2001)

Record low5° (2025)

Sun, 0640° / 27°

0.1

40 °

St. Marys, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high40°

Average low27°

Average precipitation0.1 in

Chance of precipitation42%

Record high68° (1998)

Record low2° (1977)

Mon, 0739° / 27°

0.1

39 °

St. Marys, Monday, 7 December

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.1 in

Chance of precipitation30%

Record high66° (1998)

Record low-1° (1977)

Tue, 0840° / 27°

0.07

40 °

St. Marys, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high40°

Average low27°

Average precipitation0.07 in

Chance of precipitation23%

Record high65° (1966)

Record low-1° (1977)

Wed, 0941° / 27°

0.11

41 °

St. Marys, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high41°

Average low27°

Average precipitation0.11 in

Chance of precipitation45%

Record high60° (2023)

Record low-3° (1977)

Thu, 1039° / 26°

0.11

39 °

St. Marys, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high39°

Average low26°

Average precipitation0.11 in

Chance of precipitation37%

Record high65° (1971)

Record low-5° (1977)

Fri, 1139° / 26°

0.1

39 °

St. Marys, Friday, 11 December

Climate normal for this date — 60-year average.

Average high39°

Average low26°

Average precipitation0.1 in

Chance of precipitation28%

Record high63° (2021)

Record low-11° (1977)

Sat, 1240° / 26°

0.08

40 °

St. Marys, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high40°

Average low26°

Average precipitation0.08 in

Chance of precipitation33%

Record high67° (2015)

Record low-3° (1962)

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, OH 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, OH 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.