: The hottest day on record in San Jose, CA: 109°F on Tuesday 6 September 2022.
The record begins
1893
All-time records
Hottest day
109°F
Coldest night
18°F
Wettest day
4.32 in
Warmest night
78°F
Coldest day
35°F
Daily records by decade
New daily records set in San Jose, CA by decade since the 1920s: the most record highs, 101, came in the 1930s; the most record lows, 16, in the 1930s.
Record highs
Record lows
Every decade as a table
Decade
Record highs
Record lows
Years in the record
1890s
0
0
7
1900s
0
0
10
1910s
0
0
10
1920s
33
7
10
1930s
101
16
10
1940s
60
3
10
1950s
72
0
10
1960s
43
2
10
1970s
36
4
10
1980s
40
1
10
1990s
38
4
10
2000s
45
2
10
2010s
41
3
10
2020s
40
0
7
Records by month
Month
Highest
Lowest
Wettest day
January
79°F
18°F
3.60 in
February
81°F, ,
24°F, ,
2.58 in
March
89°F
25°F,
2.79 in
April
95°F, ,
26°F
1.46 in
May
102°F
32°F, , and 1 more
1.62 in
June
107°F
33°F
0.88 in
July
108°F,
40°F, , and 2 more
0.75 in
August
105°F
39°F
1.92 in
September
109°F
35°F,
4.32 in
October
106°F
30°F
3.22 in
November
85°F, , and 1 more
22°F,
2.42 in
December
79°F
19°F,
3.23 in
Streaks, months and years
Longest heat streak
8 days
to
A high of 90°F or above
Wettest month
12.38 in
January 1911
Driest month
0.00 in
August 2025
and 225 more
Wettest year
32.57 in
1983
Driest year
3.80 in
2013
Every record in words
The coldest night on record in San Jose, CA: a low of 18°F on Saturday 6 January 1894.
The wettest day on record in San Jose, CA: 4.32 in on Thursday 12 September 1918.
The warmest night on record in San Jose, CA: a low of 78°F on Sunday 3 September 2017.
The coldest day on record in San Jose, CA: a high of 35°F on Sunday 11 December 1932.
The longest run of days with a high of 90°F or above in San Jose, CA: 8 days, from Monday 30 September to Monday 7 October 2024.
The wettest month on record in San Jose, CA: January 1911, with 12.38 in of precipitation.
The driest month on record in San Jose, CA: August 2025, with 0.00 in of precipitation (shared with 225 other months).
The wettest year on record in San Jose, CA: 1983, with 32.57 in of precipitation.
The driest year on record in San Jose, CA: 2013, with 3.80 in of precipitation.