S
M
T
W
T
F
S
28
76°
57°
29
80°
55°
30
65°
47°
31
62°
39°
1
66°
39°
2
71°
44°
3
77°
51°
4
71°
61°
5
72°
61°
6
77°
56°
7
82°
58°
8
79°
58°
9
81°
65°
10
82°
64°
11
83°
63°
12
75°
67°
13
74°
64°
14
74°
57°
15
63°
42°
16
63°
37°
17
76°
54°
18
80°
49°
19
60°
40°
20
69°
45°
21
73°
65°
22
77°
67°
23
77°
66°
24
76°
64°
25
85°
70°
26
85°
53°
27
59°
42°
28
61°
43°
29
65°
38°
30
71°
48°
31
60°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Port St. Lucie
Port St. Lucie'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 Port St. Lucie. See also: February | March | April.