San Diego, California, United States weather records
Record high and low temperatures for San Diego, California, United States, by month, by season, and all-time, with the dates they occurred, across 1981–2026 of daily climate history. Its hottest day on record reached 106°F on 2018-07-06; its coldest fell to 30°F on 1990-12-23.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 82°F2003-01-31
47°F2005-01-04
|
60°F2000-01-17
31°F2007-01-14
|
| February | 87°F2026-02-27
46°F1990-02-14
|
63°F2026-02-27
32°F1989-02-06
|
| March | 90°F2026-03-17
48°F1991-03-15
|
67°F2026-03-18
37°F1989-03-04
|
| April | 94°F1989-04-06
50°F1995-04-16
|
67°F1989-04-07
39°F1999-04-05
|
| May | 98°F1984-05-29
54°F2017-05-07
|
71°F2004-05-03
44°F1999-05-05
|
| June | 102°F2016-06-20
60°F1999-06-03
|
74°F1990-06-26
47°F2011-06-01
|
| July | 106°F2018-07-06
67°F1999-07-03
|
78°F2018-07-07
52°F2010-07-04
|
| August | 104°F1985-08-25
68°F2010-08-29
|
77°F1998-08-31
51°F2010-08-29
|
| September | 102°F2020-09-05
66°F1986-09-23
|
80°F2024-09-08
51°F1986-09-23
|
| October | 98°F2012-10-01
59°F2000-10-27
|
74°F2012-10-01
45°F2009-10-29
|
| November | 90°F1997-11-01
53°F2019-11-29
|
66°F2020-11-05
35°F1994-11-19
|
| December | 82°F2025-12-18
43°F1990-12-23
|
60°F2025-12-11
30°F1990-12-23
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 87°F2026-02-27
43°F1990-12-23
|
63°F2026-02-27
30°F1990-12-23
|
| Spring (Mar–May) | 98°F1984-05-29
48°F1991-03-15
|
71°F2004-05-03
37°F1989-03-04
|
| Summer (Jun–Aug) | 106°F2018-07-06
60°F1999-06-03
|
78°F2018-07-07
47°F2011-06-01
|
| Autumn (Sep–Nov) | 102°F2020-09-05
53°F2019-11-29
|
80°F2024-09-08
35°F1994-11-19
|
All-time records
The most extreme value San Diego has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.