S
M
T
W
T
F
S
27
87°
77°
28
87°
76°
29
86°
77°
30
85°
76°
31
85°
77°
1
84°
76°
2
85°
77°
3
84°
76°
4
84°
77°
5
85°
77°
6
85°
76°
7
84°
76°
8
85°
75°
9
85°
75°
10
84°
74°
11
84°
75°
12
85°
75°
13
85°
76°
14
84°
74°
15
85°
75°
16
84°
76°
17
84°
75°
18
85°
74°
19
84°
76°
20
85°
74°
21
84°
75°
22
Hist. Avg.
83°
76°
23
Hist. Avg.
83°
76°
24
Hist. Avg.
83°
76°
25
Hist. Avg.
83°
76°
26
Hist. Avg.
83°
75°
27
Hist. Avg.
83°
75°
28
Hist. Avg.
83°
75°
29
Hist. Avg.
83°
75°
30
Hist. Avg.
83°
75°
31
Hist. Avg.
83°
75°
1
Hist. Avg.
83°
75°
2
Hist. Avg.
83°
75°
3
Hist. Avg.
83°
75°
4
Hist. Avg.
83°
75°
5
Hist. Avg.
83°
75°
6
Hist. Avg.
83°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in San Jose
San Jose's January 2027 forecast shows daily high temperatures ranging from 84° to 87°, with overnight lows between 74° and 77°. The average high for January is 85° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in San Jose. See also: February | March | April.
