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Old Jefferson, LA Weather


Old Jefferson, LA climate is hot during summer when temperatures tend to be in the 80's and cool during winter when temperatures tend to be in the 50's.

The warmest month of the year is August with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 9.99 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.

The annual average precipitation at Old Jefferson is 9.99 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is August with an average rainfall of 6.79 Inches.

Normal Climate

Normal Temperatures

(LSU BEN HUR FARM Weather station, 9.17 miles from Old Jefferson)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 60.4 64.1 71.3 77.7 84.7 89.7 91.4 91.5 88.0 80.2 70.8 63.4 77.8
Mean °F 50.1 53.3 60.3 66.5 74.3 79.6 81.7 81.4 77.6 67.9 59.4 52.6 67.1
Min °F 39.7 42.5 49.3 55.3 63.8 69.5 72.0 71.3 67.1 55.6 47.9 41.8 56.3

Normal Precipitation

(BATON ROUGE SHERWOOD Weather station, 5.06 miles from Old Jefferson)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 5.98 5.28 5.42 5.23 5.36 5.38 5.75 6.79 4.65 4.07 4.73 5.26 9.99