S
M
T
W
T
F
S
28
41°
27°
29
41°
30°
30
45°
28°
31
45°
27°
1
39°
21°
2
48°
36°
3
41°
27°
4
43°
21°
5
37°
27°
6
41°
21°
7
48°
34°
8
54°
48°
9
48°
39°
10
48°
32°
11
50°
32°
12
55°
54°
13
55°
45°
14
57°
46°
15
50°
45°
16
54°
43°
17
46°
43°
18
54°
46°
19
50°
45°
20
52°
41°
21
52°
46°
22
54°
43°
23
46°
41°
24
46°
41°
25
50°
36°
26
50°
34°
27
52°
41°
28
52°
34°
29
48°
37°
30
54°
41°
31
54°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Rennes
Rennes'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 Rennes. See also: February | March | April.
