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As of 14:38 CST

Weather in St. Marys, IA

52°Current weather

St. Marys, Sunday, 15 November, 14:38

Clear. Feels like 49°. High 52°, low 25°.

Pressure30.39 inHg
Wind2 mph SW
Humidity49%
Visibility6.2 mi
Dew point34°
Mon, 1655° / 28°0Partly cloudy
55 °Partly cloudy

St. Marys, Monday, 16 November

Partly cloudy. High 55°, low 28°.

Pressure30.45 inHg
Wind10.2 mph S
Humidity50%
Visibility6.2 mi
Dew point33°
Tue, 1757° / 35°0Partly cloudy
57 °Partly cloudy

St. Marys, Tuesday, 17 November

Partly cloudy. High 57°, low 35°.

Pressure30.36 inHg
Wind12.9 mph S
Humidity53%
Visibility6.2 mi
Dew point37°
Wed, 1858° / 44°0Overcast
58 °Overcast

St. Marys, Wednesday, 18 November

Overcast. High 58°, low 44°.

Pressure30.12 inHg
Wind17.2 mph S
Humidity52%
Visibility6.2 mi
Dew point38°
Thu, 1961° / 42°0.06Light rain
61 °Light rain

St. Marys, Thursday, 19 November

Light rain. High 61°, low 42°.

Pressure30.21 inHg
Wind9.4 mph W
Humidity48%
Visibility6.2 mi
Dew point41°
Fri, 2063° / 39°0.05Light rain
63 °Light rain

St. Marys, Friday, 20 November

Light rain. High 63°, low 39°.

Pressure30.09 inHg
Wind17.5 mph S
Humidity89%
Visibility—
Dew point51°
Sat, 2161° / 44°0.09Light rain
61 °Light rain

St. Marys, Saturday, 21 November

Light rain. High 61°, low 44°.

Pressure29.80 inHg
Wind19.5 mph S
Humidity77%
Visibility—
Dew point53°
Sun, 2250° / 39°0Overcast
50 °Overcast

St. Marys, Sunday, 22 November

Overcast. High 50°, low 39°.

Pressure30.21 inHg
Wind7.2 mph NW
Humidity53%
Visibility—
Dew point31°
Mon, 2347° / 33°0Overcast
47 °Overcast

St. Marys, Monday, 23 November

Overcast. High 47°, low 33°.

Pressure30.27 inHg
Wind12.7 mph E
Humidity54%
Visibility—
Dew point28°
Tue, 2440° / 37°0.24Rain
40 °Rain

St. Marys, Tuesday, 24 November

Rain. High 40°, low 37°.

Pressure30.15 inHg
Wind11.5 mph E
Humidity70%
Visibility—
Dew point31°
Wed, 2546° / 40°0.02Light rain
46 °Light rain

St. Marys, Wednesday, 25 November

Light rain. High 46°, low 40°.

Pressure29.83 inHg
Wind8.5 mph SE
Humidity96%
Visibility—
Dew point43°
Thu, 2649° / 44°0.97Rain
49 °Rain

St. Marys, Thursday, 26 November

Rain. High 49°, low 44°.

Pressure29.38 inHg
Wind29.4 mph N
Humidity98%
Visibility—
Dew point46°
Fri, 2746° / 40°0.57Rain
46 °Rain

St. Marys, Friday, 27 November

Rain. High 46°, low 40°.

Pressure29.32 inHg
Wind28.6 mph NW
Humidity80%
Visibility—
Dew point35°
Sat, 2849° / 38°0Partly cloudy
49 °Partly cloudy

St. Marys, Saturday, 28 November

Partly cloudy. High 49°, low 38°.

Pressure29.80 inHg
Wind20.4 mph W
Humidity51%
Visibility—
Dew point29°
Sun, 2942° / 36°0.27Light rain
42 °Light rain

St. Marys, Sunday, 29 November

Light rain. High 42°, low 36°.

Pressure30.03 inHg
Wind15.5 mph N
Humidity94%
Visibility—
Dew point40°
Mon, 3037° / 29°0Overcast
37 °Overcast

St. Marys, Monday, 30 November

Overcast. High 37°, low 29°.

Pressure30.21 inHg
Wind17.4 mph N
Humidity60%
Visibility—
Dew point23°

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, IA 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, IA 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.