National Weather Service United States Department of Commerce

Powerful Pacific System Impacting the West; First Significant Snow for Portions of the East

Power Pacific system will continue to bring significant impacts for Pacific Northwest into northern California the remainder of the week. Dangerous coastal affects, heavy rain, flooding, strong winds, and higher elevation mountain snow continues. Meanwhile, a storm across the east is set to bring the first accumulating snow to many higher elevations of the Catskills into the central Appalachians. Read More >

100° Day Summary for Waco        Click Here for DFW

Average Number of 100° Days (1991-2020):

Waco - 100-Degree Days (1991-2020)

(March, April, and October have had 100° days,
but the average is near zero.)

 

First and Last Occurrences (1902-2024):
  • Average date of first 100°F: July 4
  • Average date of last 100°F: August 29
  • Earliest occurrence: Mar 28, 1971 (100°F)
  • Latest occurrence: Oct 15, 2024 (100°F)
  • Latest first occurrence: Oct 3, 1979 (101°F)
  • Earliest last occurrence: Jul 8, 1931 (104°F)
Most and Fewest:
  • Most in a calendar year: 90 (2011)
  • Fewest in a calendar year: 0 (1920, 1919)
  • Most consecutive: 44 (Jun 30 - Aug 12, 2011)
  • Most in a month: 31 (Jul 2011, Jul 1980)
  • Greatest number of months in a year with at least one occurrence: 5
    2024 - June, July, August, September, October
    2022 - June, July, August, September, October
    2011 - May, June, July, August, September
    1998 - May, June, July, August, September
    1985 - May, June, July, August, September
    1977 - June, July, August, September, October
    1963 - April, June, July, August, September
    1911 - May, June, July, August, September
  • Only month to record both 100°F and 32°F: Mar 1971 (29°F on the 3rd and 100°F on the 28th)