S
M
T
W
T
F
S
27
30°
13°
28
27°
11°
29
27°
12°
30
28°
24°
31
32°
19°
1
37°
16°
2
30°
12°
3
27°
12°
4
25°
24°
5
32°
26°
6
36°
24°
7
40°
12°
8
39°
9°
9
26°
11°
10
22°
9°
11
24°
8°
12
21°
6°
13
22°
6°
14
20°
10°
15
23°
10°
16
24°
11°
17
25°
21°
18
30°
12°
19
33°
7°
20
25°
8°
21
21°
20°
22
29°
24°
23
36°
25°
24
37°
26°
25
40°
24°
26
39°
23°
27
37°
24°
28
36°
22°
29
38°
22°
30
34°
23°
31
Hist. Avg.
31°
18°
1
Hist. Avg.
31°
18°
2
Hist. Avg.
32°
18°
3
Hist. Avg.
32°
18°
4
Hist. Avg.
32°
18°
5
Hist. Avg.
32°
18°
6
Hist. Avg.
32°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Harrow
Harrow's January 2027 forecast shows daily high temperatures ranging from 20° to 40°, with overnight lows between 6° and 26°. The average high for January is 30° with an average low of 16°. 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 Harrow. See also: February | March | April.
