Old Jefferson, LA Weather - Forecast & Monthly Averages

TEMPERATURE	76
HUMIDITY	91
PRESSURE	101290
WIND COND.	90 11.2

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Weather Quick Facts

The highest monthly average temperature in Old Jefferson for August is 82.2 degrees
The lowest monthly average temperature in Old Jefferson for January is 52.8 degrees
The most monthly precipitation in Old Jefferson occurs in December with 9.3 inches
The air quality index in Old Jefferson is 7% worse than the national average
The pollution index in Old Jefferson is 29% better than the national average

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Old Jefferson 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	44°F	65°F	53°F	5.2"
February	45°F	66°F	54°F	5.0"
March	51°F	74°F	62°F	3.1"
April	58°F	80°F	68°F	3.2"
May	66°F	86°F	75°F	5.7"
June	72°F	92°F	81°F	3.0"
July	74°F	92°F	82°F	5.2"
August	74°F	93°F	82°F	7.9"
September	70°F	89°F	78°F	6.9"
October	58°F	81°F	69°F	5.6"
November	49°F	73°F	59°F	2.7"
December	45°F	66°F	54°F	9.3"

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Old Jefferson 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	Old Jefferson	Louisiana	National
Air quality index	45	106	42
Pollution index	1,932,420	2,526,475	2,726,193

Old Jefferson air quality

Measurement	Total
Days measured	365
Days with good air quality	224
Days with moderate air quality	132
Days w/ poor A.Q. for sensitive groups	9
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.030%
Carbon Tetrachloride	0.060%
Lead	0.000%
Mercury	0.000%

Average monthly Old Jefferson temperature with heat index

Old Jefferson monthly precipitation with daily maximum

Old Jefferson monthly snow depth with daily maximum

Old Jefferson monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Brusly, LA	2,690	45	10.0%
Central, LA	29,235	45	10.0%
Monticello, LA	4,926	45	10.0%
Walker, LA	6,278	45	10.0%
Bayou Goula, LA	370	45	10.0%
Old Jefferson, LA	7,321	45	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Winooski, VT	7,320	37	26.0%
Whitewater Region, ON	7,320	n/a
Gorham, ME	7,322	40	20.0%
Mills River, NC	7,319	44	12.0%
Mexia, TX	7,319	41	18.0%
Old Jefferson, LA	7,321	45	10.0%

Source: The Old Jefferson, LA 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.