Abilene:
Average annual number of 100 degree days (1991-2020): 19 days
Annual and consecutive days with high temperatures of 100 degress or greater
Period of record 1886-present
| Rank | Greatest Annual Number of Days (Year) |
Most Consecutive Days and Dates (1937 - present) |
| 1 | 81 (2011) | 30 (August 3 - September 1, 1952) |
| 2 | 46 (1934) | 21 (July 1 - July 21, 1978) |
| 44 (1943) | 21 (June 8 - June 28, 1953) | |
| 4 | 43 (1952) | 19 (July 27 - August 14, 1937) |
| 5 | 42 (1980) | 18 (July 12 - July 29, 2011) |
| 42 (1978) | 18 (July 30 - August 16, 1943) | |
| 7 | 40 (2012) | 16 (August 16 - August 31, 2011) |
| 8 | 40 (2000) | 12 (July 31 - August 11, 2011) |
| 37 (1998) | 12 (July 23 - August 3, 1998) | |
| 37 (1953) | 12 (July 8 - July 19, 1980) # |
# Twelve consecutive days was also matched in 1980, 1943 and 1918
Years when Maximum Temperature did not reach 100 degrees:
1890
1961
1968
1975
1992
2007
Earliest and Latest Dates of Occurrence:
Average calendar date of the first 100-degree high (1991-2020): June 7
Earliest calendar date (on record) of the first 100-degree high: April 18, 1925
Latest calendar date (on record) of the first 100-degree high (in years where 100-degree temperatures occurred): August 22, 1979
Latest calendar date (on record) of the last 100-degree high: October 11, 2020
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