S
M
T
W
T
F
S
28
97°
57°
29
101°
62°
30
75°
64°
31
75°
60°
1
80°
62°
2
86°
61°
3
79°
66°
4
78°
62°
5
85°
64°
6
100°
59°
7
112°
64°
8
116°
70°
9
98°
72°
10
72°
65°
11
76°
61°
12
79°
63°
13
81°
62°
14
82°
62°
15
74°
65°
16
76°
66°
17
83°
66°
18
97°
65°
19
85°
68°
20
82°
67°
21
74°
65°
22
78°
59°
23
96°
54°
24
115°
81°
25
84°
69°
26
112°
69°
27
111°
76°
28
89°
73°
29
93°
74°
30
100°
78°
31
85°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Whyalla
Whyalla's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. 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 Whyalla. See also: February | March | April.