37.359°N, 121.924°W · station SJCthr · 134 years of record
88°F
HOTTEST OCT 17 SINCE 2020
forecast high · Oct 17
7-Day Forecast
NWS NDFD forecast high temperature for San Jose.
This Day in History
Every year's high on each of the next 7 forecast dates at San Jose — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#5 / 124
warmest Oct 17 in 124 yrs of record
Warmest Oct 17 ever
95°F
set in 2020
Coolest Oct 17 ever
59°F
set in 2010
Forecast high 88°F — 5th warmest Oct 17 of 124 years · record 95°F (2020) · warmest since 2020.
Ranks
#35 / 124
warmest Oct 18 in 124 yrs of record
Warmest Oct 18 ever
98°F
set in 1903
Coolest Oct 18 ever
56°F
set in 1916
Forecast high 78°F — 35th warmest Oct 18 of 124 years · record 98°F (1903) · warmest since 2025.
Ranks
#113 / 123
warmest Oct 19 in 123 yrs of record
Warmest Oct 19 ever
93°F
set in 2023
Coolest Oct 19 ever
59°F
set in 1916
Forecast high 68°F — 113th warmest Oct 19 of 123 years · record 93°F (2023) · warmest since 2025.
Ranks
#103 / 124
warmest Oct 20 in 124 yrs of record
Warmest Oct 20 ever
91°F
set in 1991
Coolest Oct 20 ever
60°F
set in 1894
Forecast high 68°F — 103rd warmest Oct 20 of 124 years · record 91°F (1991) · warmest since 2025.
Ranks
#73 / 124
warmest Oct 21 in 124 yrs of record
Warmest Oct 21 ever
89°F
set in 1901
Coolest Oct 21 ever
59°F
set in 1941
Forecast high 70°F — 73rd warmest Oct 21 of 124 years · record 89°F (1901) · warmest since 2025.
Ranks
#79 / 124
warmest Oct 22 in 124 yrs of record
Warmest Oct 22 ever
90°F
set in 1901
Coolest Oct 22 ever
56°F
set in 1916
Forecast high 70°F — 79th warmest Oct 22 of 124 years · record 90°F (1901) · warmest since 2024.
Ranks
#74 / 124
warmest Oct 23 in 124 yrs of record
Warmest Oct 23 ever
90°F
set in 1959
Coolest Oct 23 ever
59°F
set in 1962
Forecast high 70°F — 74th warmest Oct 23 of 124 years · record 90°F (1959) · warmest since 2024.
The hottest and coldest ever recorded at San Jose in each calendar month, and for the whole 1893–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
79°FJan 8, 1962
18°FJan 6, 1894
Feb
81°FFeb 17, 1930
24°FFeb 11, 1894
Mar
89°FMar 14, 2015
25°FMar 15, 1895
Apr
95°FApr 9, 1989
26°FApr 5, 1895
May
102°FMay 30, 1910
32°FMay 16, 1894
Jun
107°FJun 14, 1961
33°FJun 19, 1893
Jul
108°FJul 7, 1905
40°FJul 24, 1893
Aug
105°FAug 1, 1993
39°FAug 26, 1893
Sep
109°FSep 6, 2022
35°FSep 30, 1893
Oct
106°FOct 2, 2024
30°FOct 18, 1893
Nov
85°FNov 4, 1921
22°FNov 20, 1893
Dec
79°FDec 12, 1958
19°FDec 22, 1990
All-time
109°FSep 6, 2022
18°FJan 6, 1894
2026 Records So Far
Records set or tied at San Jose so far this year — through Oct 15.
Record Highs in 2026
4 broke
plus 2 tied — daily record highs set this year
Record Lows in 2026
0 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
78°F
record high minimum — the night it never cooled · Sep 3, 2017
Coldest high ever
35°F
record low maximum — the day it never warmed · Dec 11, 1932
Month
Warmest low
Coldest high
Jan
61°FJan 1, 1997
40°FJan 6, 1907
Feb
62°FFeb 15, 1982
43°FFeb 5, 1989
Mar
64°FMar 21, 1984
46°FMar 16, 1954
Apr
64°FApr 30, 1981
48°FApr 9, 1927
May
68°FMay 16, 2008
52°FMay 4, 1915
Jun
72°FJun 17, 1993
59°FJun 2, 1967
Jul
74°FJul 23, 2006
62°FJul 3, 1910
Aug
73°FAug 14, 2020
65°FAug 5, 1999
Sep
78°FSep 3, 2017
60°FSep 29, 1894
Oct
68°FOct 3, 2024
54°FOct 26, 1896
Nov
64°FNov 20, 1950
46°FNov 27, 1896
Dec
61°FDec 21, 2025
35°FDec 11, 1932
All-time
78°FSep 3, 2017
35°FDec 11, 1932
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
8 days
record run, ended Sep 23 1939
So far in 2026
13 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from San Jose's own 1991–2020 record. Today's normal high: 76°F · forecast is +12° vs normal.
San Jose's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
2026 So Far
Every day this year against San Jose's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.