S
M
T
W
T
F
S
29
76°
65°
30
80°
66°
1
81°
67°
2
83°
66°
3
81°
65°
4
81°
67°
5
74°
60°
6
81°
58°
7
75°
59°
8
74°
61°
9
76°
64°
10
75°
67°
11
81°
69°
12
83°
61°
13
82°
60°
14
75°
63°
15
76°
66°
16
82°
62°
17
81°
61°
18
75°
60°
19
75°
64°
20
81°
63°
21
81°
69°
22
83°
69°
23
Hist. Avg.
77°
63°
24
Hist. Avg.
77°
63°
25
Hist. Avg.
77°
63°
26
Hist. Avg.
77°
63°
27
Hist. Avg.
77°
63°
28
Hist. Avg.
77°
63°
29
Hist. Avg.
77°
63°
30
Hist. Avg.
77°
63°
31
Hist. Avg.
77°
64°
1
Hist. Avg.
77°
64°
2
Hist. Avg.
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in St Ives
St Ives's December 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 58° and 69°. The average high for December is 79° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in St Ives. See also: January | February | March.