St. Mary's, CO Weather Forecast & Monthly Average Temperatures

TEMPERATURE	72
HUMIDITY	35
PRESSURE	30.2
WIND COND.	10 4.7

St. Mary's Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	18°F	48°F	32°F	1.2"
February	21°F	50°F	34°F	1.5"
March	30°F	62°F	44°F	1.6"
April	36°F	66°F	49°F	0.2"
May	43°F	73°F	57°F	2.4"
June	54°F	89°F	71°F	1.1"
July	59°F	92°F	75°F	2.1"
August	56°F	90°F	72°F	1.1"
September	49°F	82°F	64°F	0.2"
October	38°F	69°F	52°F	2.1"
November	28°F	58°F	41°F	2.6"
December	17°F	46°F	30°F	0.7"

Did you know?

The highest monthly average temperature in St. Mary's for July is 75 degrees.
The lowest monthly average temperature in St. Mary's for December is 30 degrees.
The most monthly precipitation in St. Mary's occurs in November with 2.6 inches.
The air quality index in St. Mary's is 15% better than the national average.
The pollution index in St. Mary's is 104% worse than the national average.

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St. Mary's air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	St. Mary's	Colorado	National
Air quality index	42	38	50
Pollution index	10,378,100	2,034,619	5,066,862

St. Mary's air quality information

Measurement	Total
Days measured	363
Days with good air quality	296
Days with moderate air quality	63
Days w/ poor A.Q. for sensitive groups	4
Days with unhealthy air quality

St. Mary's air quality information

Pollutant	Total
Arsenic	0.770%
Benzene	0.030%
Carbon Tetrachloride	2.620%
Lead	0.070%
Mercury	0.240%

Average monthly St. Mary's temperature with heat index

St. Mary's monthly precipitation with daily maximum

St. Mary's monthly snow depth with daily maximum

St. Mary's monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Coal Creek, CO	1,821	42	16%
Empire, CO	301	42	16%
Idaho Springs, CO	1,937	42	16%
St. Ann Highlands, CO	366	42	16%
Upper Bear Creek, CO	1,227	42	16%
St. Mary's, CO	329	42	16%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Rosemont, MD	329	41	18%
Great Cacapon, WV	329	41	18%
Florence, SD	329	36	28%
Ramos, TX	329	36	28%
Paxico, KS	329	32	36%
St. Mary's, CO	329	42	16%

Source: The St. Mary's, CO weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.