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As of 11:43 MST

Weather in St. Mary's, CO

40°Current weather

St. Mary's, Tuesday, 3 November, 11:43

Overcast. Feels like 36°. High 40°, low 20°.

Pressure30.15 inHg
Wind6 mph NW
Humidity54%
Visibility6.2 mi
Dew point26°
Wed, 0437° / 19°0.08Light snow
37 °Light snow

St. Mary's, Wednesday, 4 November

Light snow. High 37°, low 19°.

Pressure29.85 inHg
Wind7.1 mph E
Humidity71%
Visibility6.2 mi
Dew point22°
Thu, 0540° / 18°0Clear
40 °Clear

St. Mary's, Thursday, 5 November

Clear. High 40°, low 18°.

Pressure30.06 inHg
Wind5.3 mph SE
Humidity62%
Visibility6.2 mi
Dew point16°
Fri, 0640° / 23°0Partly cloudy
40 °Partly cloudy

St. Mary's, Friday, 6 November

Partly cloudy. High 40°, low 23°.

Pressure30.15 inHg
Wind4.1 mph NW
Humidity66%
Visibility6.2 mi
Dew point20°
Sat, 0746° / 20°0Clear
46 °Clear

St. Mary's, Saturday, 7 November

Clear. High 46°, low 20°.

Pressure30.24 inHg
Wind5.2 mph NW
Humidity53%
Visibility—
Dew point23°
Sun, 0847° / 27°0Clear
47 °Clear

St. Mary's, Sunday, 8 November

Clear. High 47°, low 27°.

Pressure30.18 inHg
Wind8.2 mph NW
Humidity45%
Visibility—
Dew point24°
Mon, 0940° / 25°0.01Light snow
40 °Light snow

St. Mary's, Monday, 9 November

Light snow. High 40°, low 25°.

Pressure30.06 inHg
Wind7.8 mph W
Humidity30%
Visibility—
Dew point9°
Tue, 1039° / 22°0Clear
39 °Clear

St. Mary's, Tuesday, 10 November

Clear. High 39°, low 22°.

Pressure30.09 inHg
Wind6.5 mph W
Humidity38%
Visibility—
Dew point13°
Wed, 1137° / 21°0Overcast
37 °Overcast

St. Mary's, Wednesday, 11 November

Overcast. High 37°, low 21°.

Pressure30.18 inHg
Wind5.3 mph W
Humidity23%
Visibility—
Dew point0°
Thu, 1239° / 20°0Clear
39 °Clear

St. Mary's, Thursday, 12 November

Clear. High 39°, low 20°.

Pressure30.09 inHg
Wind5.6 mph W
Humidity13%
Visibility—
Dew point-11°
Fri, 1341° / 20°0Clear
41 °Clear

St. Mary's, Friday, 13 November

Clear. High 41°, low 20°.

Pressure29.91 inHg
Wind6.7 mph W
Humidity10%
Visibility—
Dew point-15°
Sat, 1443° / 21°0Overcast
43 °Overcast

St. Mary's, Saturday, 14 November

Overcast. High 43°, low 21°.

Pressure29.74 inHg
Wind7 mph SW
Humidity21%
Visibility—
Dew point2°
Sun, 1529° / 14°0.37Snow
29 °Snow

St. Mary's, Sunday, 15 November

Snow. High 29°, low 14°.

Pressure29.47 inHg
Wind24.6 mph W
Humidity74%
Visibility—
Dew point21°
Mon, 1624° / 8°0.06Light snow
24 °Light snow

St. Mary's, Monday, 16 November

Light snow. High 24°, low 8°.

Pressure29.91 inHg
Wind19 mph W
Humidity57%
Visibility—
Dew point7°
Tue, 1728° / 12°0.29Snow
28 °Snow

St. Mary's, Tuesday, 17 November

Snow. High 28°, low 12°.

Pressure29.47 inHg
Wind4.2 mph SW
Humidity48%
Visibility—
Dew point9°
Wed, 1820° / 4°0.16Light snow
20 °Light snow

St. Mary's, Wednesday, 18 November

Light snow. High 20°, low 4°.

Pressure29.53 inHg
Wind16.4 mph NW
Humidity77%
Visibility—
Dew point13°

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. Mary's, CO 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. Mary's, CO 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.