The September contiguous U.S. average temperature was 68.5°F, 3.7°F above the 20th century average. Only September 1998 was warmer for the Lower 48. Record and near-record warmth spanned most of the country, with nine states in the Northeast, Midwest, and Southwest record warm. The September precipitation total for the contiguous U.S. was 2.09 inches, 0.40 inch below average, and the 21st driest on record.
This monthly summary from NOAA’s National Centers for Environmental Information is part of the suite of climate services NOAA provides to government, business, academia, and the public to support informed decision making.
The maps below show how the average temperature, and precipitation values for the month of September 2015 deviate from the 30-year normals (1981-2010).
– Click on Map to Zoom In –