St. Marys, OH Weather - Forecast & Monthly Averages

TEMPERATURE	75
HUMIDITY	37
PRESSURE	101800
WIND COND.	130 16.6

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Weather Quick Facts

The highest monthly average temperature in St. Marys for August is 73.7 degrees
The lowest monthly average temperature in St. Marys for February is 24.7 degrees
The most monthly precipitation in St. Marys occurs in January with 11.1 inches
The air quality index in St. Marys is 7% better than the national average
The pollution index in St. Marys is 49% better than the national average

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St. Marys 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	22°F	37°F	29°F	11.1"
February	17°F	32°F	25°F	2.6"
March	31°F	50°F	39°F	6.7"
April	39°F	62°F	50°F	7.1"
May	48°F	74°F	61°F	1.6"
June	61°F	85°F	73°F	5.4"
July	61°F	84°F	73°F	5.5"
August	63°F	86°F	74°F	10.2"
September	56°F	79°F	67°F	5.9"
October	47°F	67°F	57°F	3.2"
November	33°F	52°F	43°F	5.1"
December	22°F	36°F	29°F	3.3"

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St. Marys 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. Marys	Ohio	National
Air quality index	39	40	42
Pollution index	1,402,740	4,472,386	2,726,193

St. Marys air quality information

Measurement	Total
Days measured	364
Days with good air quality	303
Days with moderate air quality	61
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

St. Marys air quality information

Pollutant	Total
Arsenic	0.003%
Benzene	0.020%
Carbon Tetrachloride	0.003%
Lead	0.020%
Mercury	0.010%

Average monthly St. Marys temperature with heat index

St. Marys monthly precipitation with daily maximum

St. Marys monthly snow depth with daily maximum

St. Marys monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Burkettsville, OH	249	6	88.0%
New Weston, OH	67	6	88.0%
Lima, OH	36,908	39	22.0%
Wapakoneta, OH	9,662	39	22.0%
St. Henry, OH	2,738	39	22.0%
St. Marys, OH	8,227	39	22.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Brazil, IN	8,225	45	10.0%
Pewaukee village, WI	8,225	44	12.0%
Ketchikan, AK	8,230	20	60.0%
Drayton Valley, AB	8,231	n/a
Dryden, ON	8,222	n/a
St. Marys, OH	8,227	39	22.0%

Source: The St. Marys, OH 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.