September begins with Labor Day on the first Monday of the month. Labor Day became a federal holiday in 1894 to honor the nation’s workers. The first day of astronomical autumn is on Sept. 22. This is called the equinox because day and night are almost equal in length throughout the world. On this day the sun will rise exactly in the east and set exactly in the west.
The average high temperature in Birmingham for September is 85 degrees, and the average low temperature is 64 degrees. The record high was 106 degrees on Sept. 5, 1925 and Sept. 6, 1925. The record low temperature was 37 degrees on Sept. 30, 1967. The average rainfall is 3.9 inches.
In Tuscaloosa, the average high temperature is 87 degrees, and the average low is 64 degrees. The record high was 104 degrees on Sept. 1, 1951, and again on Sept. 4, 1954. Official Tuscaloosa records go back to 1948. The record low temperature was 37 degrees on Sept. 30, 1967. The average rainfall is 3.52 inches.
Sunrise in Birmingham is at 6:21 a.m. on Sept. 1 and at 6:41 a.m. on Sept. 30. Sunset is at 7:12 p.m. on Sept. 1 and at 6:33 p.m. on Sept. 30. Sunrise and sunset are about three minutes later in Tuscaloosa.
There will be a full moon on Sept. 6 and a new moon on Sept. 20. The planet Venus is in the morning sky before sunrise. Saturn is visible in the evening sky. Jupiter, which is much brighter than Saturn, is lower in the west. By the end of the month, Jupiter will set about 7:30 p.m. Also in the evening sky, three bright stars named Vega, Deneb and Altair form a large triangle overhead. (Sources: National Weather Service, U.S. Naval Observatory)