National Climate Report - Annual 2015
CONUS Temperature Historical Context

« National Climate Report - Annual 2015


CONUS Temperature Historical Context


The figure below depicts each month of the 1,452 months (121 years' worth of months) on record, as a continuum from coolest to warmest, with respect to each month's 20th century average temperature. The height (or depth) of the bar shows how much warmer (or cooler) an individual month was, compared to that month's 20th century average. The range spans from February 1936, which was 8.6°F cooler than the 20th century average for February, to March 2012, 8.9°F warmer than the 20th century average for March.

The twelve months of 2015 are highlighted in gold. Eleven of 2015's twelve months were warmer than their 20th century average; only February was cooler. Moreover, eight of the year's monthly anomalies fit within the rightmost (warmest) one-fourth of this chart.


(click to enlarge)

map depicting record or near-record warm, cold, rainy or dry conditions for 2015