S
M
T
W
T
F
S
29
50°
38°
30
51°
39°
1
51°
38°
2
50°
39°
3
50°
35°
4
49°
33°
5
49°
35°
6
48°
36°
7
47°
34°
8
48°
37°
9
46°
38°
10
47°
38°
11
49°
39°
12
44°
38°
13
43°
33°
14
43°
31°
15
Hist. Avg.
45°
38°
16
Hist. Avg.
45°
38°
17
Hist. Avg.
45°
38°
18
Hist. Avg.
45°
38°
19
Hist. Avg.
45°
38°
20
Hist. Avg.
45°
38°
21
Hist. Avg.
44°
37°
22
Hist. Avg.
44°
37°
23
Hist. Avg.
44°
37°
24
Hist. Avg.
44°
37°
25
Hist. Avg.
44°
37°
26
Hist. Avg.
44°
37°
27
Hist. Avg.
44°
37°
28
Hist. Avg.
44°
37°
29
Hist. Avg.
44°
37°
30
Hist. Avg.
44°
37°
31
Hist. Avg.
44°
37°
1
Hist. Avg.
44°
37°
2
Hist. Avg.
44°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Radlett
Radlett's December 2026 forecast shows daily high temperatures ranging from 43° to 51°, with overnight lows between 31° and 39°. The average high for December is 48° with an average low of 36°. 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 Radlett. See also: January | February | March.
