Glen St. Mary, FL Weather - Forecast & Monthly Averages

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Key findings

The highest monthly average temperature in Glen St. Mary for August is 80 degrees
The lowest monthly average temperature in Glen St. Mary for January is 53 degrees
The most monthly precipitation in Glen St. Mary occurs in June with 8.5 inches
The air quality index in Glen St. Mary is 24% better than the national average
The pollution index in Glen St. Mary is 29% worse than the national average

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Glen St. Mary 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	42°F	66°F	53°F	3.3"
February	44°F	67°F	54°F	2.5"
March	47°F	71°F	58°F	1.8"
April	57°F	81°F	68°F	3.0"
May	63°F	86°F	74°F	4.4"
June	70°F	90°F	79°F	8.5"
July	72°F	91°F	80°F	4.8"
August	73°F	90°F	80°F	6.6"
September	70°F	87°F	77°F	4.3"
October	61°F	81°F	70°F	2.7"
November	49°F	73°F	60°F	0.7"
December	46°F	69°F	56°F	1.9"

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Glen St. Mary 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	Glen St. Mary	Florida	National
Air quality index	38	35	50
Pollution index	6,554,710	15,391,344	5,066,862

Glen St. Mary air quality information

Measurement	Total
Days measured	363
Days with good air quality	294
Days with moderate air quality	69
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Glen St. Mary air quality information

Pollutant	Total
Arsenic	0.020%
Benzene	0.040%
Carbon Tetrachloride	0.002%
Lead	0.070%
Mercury	0.010%

Average monthly Glen St. Mary temperature with heat index

Glen St. Mary monthly precipitation with daily maximum

Glen St. Mary monthly snow depth with daily maximum

Glen St. Mary monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Raiford, FL	170	38	24%
Baldwin, FL	1,849	43	14%
Macclenny, FL	6,451	43	14%
Glen St. Mary, FL	566	38	24%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Brownsville, MN	566	35	30%
Chazy, NY	566	37	26%
San Ygnacio, TX	566	41	18%
Perrinton, MI	566	36	28%
South Van Horn, AK	566	38	24%
Glen St. Mary, FL	566	38	24%

Source: The Glen St. Mary, FL 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.