National Weather Service United States Department of Commerce
 
 
All-time Tucson daily and monthly extremes
for the period (1894-2022)
 
Temperature
Record High: 117 deg F on June 26, 1990
Record Low: 6 deg F on January 7, 1913
Warmest year (avg.): 73.3 deg F in 2017
Warmest month (avg.): 92.0 deg F in August 2020
Coolest year (avg.): 65.0 deg F in 1905 & 1912
Coldest month (avg.): 41.2 deg F in January 1937
 
Precipitation
Record one-day (mid-mid): 3.93 inches on July 29, 1958
Wettest year: 24.17 inches in 1905
Wettest month: 8.06 inches in July 2021
Driest year: 4.17 inches in 2020
Driest month: 0.00 inches in May 2022 (last of 102 occurrences)
 
Snowfall
Record one-day (mid-mid) 6.8 inches on December 8, 1971
Record yearly total: 8.3 inches in 1987
Record seasonal (July-June) 6.8 inches in 1971-72 season
 
Check NOWdata for additional historical climate data for Tucson & other sites across SE Arizona