San Diego Weather Records

San Diego, California weather averages and records from 1850–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in San Diego, California was 111 °F which occurred on September 26, 1963.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in San Diego, California was 25 °F which occurred on January 7, 1913.
Lowest Temperatures: All-Time By Year
San Diego Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 66.0 50.0 88 25 2.0
February 65.7 51.4 91 34 2.2
March 66.5 54.1 99 36 1.5
April 68.3 56.6 98 39 0.7
May 69.1 59.9 98 45 0.3
June 71.1 62.4 101 50 0.0
July 74.8 65.8 100 54 0.1
August 76.9 67.2 98 54 0.0
September 76.8 65.9 111 50 0.1
October 74.1 61.3 107 43 0.5
November 70.2 54.4 100 36 0.8
December 65.5 49.4 88 32 1.7
Entire year 70.4 58.2 111 25 9.8
More San Diego Weather Records
1850–2024
Highest daily low 78 °F September 4, 2022
Lowest daily high 45 °F January 6, 1913
Greatest daily range
(Difference of high and low)
46 °F October 14, 1961
Greatest difference in daily high
over two conscutive days
32 °F Sep 16–17, 1913
Most daily precipitation 3.3 inches December 2, 1854
Most monthly precipitation 9.3 inches December 1921
Most yearly precipitation 27.6 inches 1884
Most yearly days with precipitation 81 1884
Earliest day ≥ 80 °F January 2 1893
Earliest day ≥ 90 °F February 12 2022
Latest freeze January 22 1937
Latest day ≥ 80 °F December 31 1958
Latest day ≥ 90 °F November 22 2017
Most days in a year < 32 °F 2 1949
Most days in a year ≥ 80 °F 80 1984
Most days in a year ≥ 90 °F 14 2014
Most days in a year ≥ 100 °F 2 1979
Most days in a year ≥ 110 °F 1 1963
San Diego Weather Streaks
Most consecutive days...
With precipitation 9 days Feb 26 – Mar 6, 1983
Without precipitation 182 days Apr 18 – Oct 16, 2004
High temperature ≥ 80 °F 30 days Aug 23 – Sep 21, 1983
High temperature ≥ 90 °F 5 days Sep 15–19, 1979
Plant Hardiness Zone
11A
San Diego is in plant hardiness zone 11A
based on average yearly minimum temperature from 1991–2020
San Diego Weather by Year
More San Diego Weather
Compare San Diego to:
Weather Station Details
Years Station Coordinates
1940–2024 San Diego International Airport location
1850–1939 San Diego WBO location