St. Mary's, CO Weather - Forecast & Monthly Averages

TEMPERATURE	21
HUMIDITY	65
PRESSURE	102910
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in St. Mary's for July is 74.7 degrees
The lowest monthly average temperature in St. Mary's for December is 29.7 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 12% worse than the national average
The pollution index in St. Mary's is 281% worse than the national average

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St. Mary's Average Temperature

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"

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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	47	38	42
Pollution index	10,378,100	2,068,342	2,726,193

St. Mary's air quality

Measurement	Total
Days measured	365
Days with good air quality	227
Days with moderate air quality	133
Days w/ poor A.Q. for sensitive groups	5
Days with unhealthy air quality	0

Air quality details

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	Population	Air Quality Index	National Avg.
Coal Creek town, CO	308	47	6.0%
Upper Bear Creek, CO	799	47	6.0%
Empire, CO	410	47	6.0%
Silver Plume, CO	175	47	6.0%
Rollinsville, CO	375	47	6.0%
St. Mary's, CO	416	47	6.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Jerome, AZ	416	43	14.0%
Between, GA	416	44	12.0%
Earling, IA	416	40	20.0%
Hartsville, IN	416	41	18.0%
Hazleton, IN	416	36	28.0%
St. Mary's, CO	416	47	6.0%

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.