St. Johnsbury, VT Weather - Forecast & Monthly Averages

TEMPERATURE	53
HUMIDITY	77
PRESSURE	101390
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in St. Johnsbury for July is 68.4 degrees
The lowest monthly average temperature in St. Johnsbury for January is 18.4 degrees
The most monthly precipitation in St. Johnsbury occurs in July with 5.6 inches
The air quality index in St. Johnsbury is 5% better than the national average
The pollution index in St. Johnsbury is 53% better than the national average

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St. Johnsbury 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	10°F	27°F	18°F	2.4"
February	11°F	30°F	20°F	2.7"
March	20°F	39°F	29°F	2.6"
April	34°F	55°F	43°F	3.5"
May	45°F	68°F	56°F	4.4"
June	54°F	75°F	64°F	5.1"
July	59°F	79°F	68°F	5.6"
August	57°F	77°F	66°F	4.5"
September	50°F	70°F	59°F	3.4"
October	40°F	57°F	48°F	5.2"
November	29°F	45°F	36°F	3.0"
December	19°F	32°F	25°F	4.1"

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St. Johnsbury 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. Johnsbury	Vermont	National
Air quality index	40	36	42
Pollution index	1,278,430	1,478,772	2,726,193

St. Johnsbury air quality

Measurement	Total
Days measured	324
Days with good air quality	314
Days with moderate air quality	10
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.020%
Carbon Tetrachloride	0.002%
Lead	0.010%
Mercury	0.001%

Average monthly St. Johnsbury temperature with heat index

St. Johnsbury monthly precipitation with daily maximum

St. Johnsbury monthly snow depth with daily maximum

St. Johnsbury monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Groton, VT	569	34	32.0%
Greensboro, VT	125	37	26.0%
Greensboro Bend, VT	215	37	26.0%
Concord, VT	176	40	20.0%
Littleton, NH	4,294	40	20.0%
St. Johnsbury, VT	5,815	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Monticello, IL	5,815	42	16.0%
Elsmere, DE	5,814	51	2.0%
Alma, AR	5,816	36	28.0%
Little Silver, NJ	5,817	51	2.0%
Monroeville, AL	5,812	37	26.0%
St. Johnsbury, VT	5,815	40	20.0%

Source: The St. Johnsbury, VT 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.