S
M
T
W
T
F
S
27
62°
57°
28
69°
58°
29
74°
57°
30
80°
56°
1
87°
61°
2
86°
58°
3
70°
58°
4
64°
57°
5
73°
43°
6
66°
43°
7
68°
47°
8
75°
53°
9
76°
51°
10
71°
50°
11
69°
54°
12
67°
52°
13
68°
49°
14
65°
49°
15
66°
48°
16
62°
48°
17
69°
53°
18
68°
53°
19
66°
52°
20
68°
48°
21
58°
43°
22
57°
45°
23
58°
44°
24
65°
49°
25
68°
50°
26
67°
42°
27
55°
39°
28
56°
41°
29
59°
48°
30
57°
47°
31
60°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gaithersburg
Gaithersburg's October 2026 forecast shows daily high temperatures ranging from 55° to 86°, with overnight lows between 39° and 58°. The average high for October is 66° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Gaithersburg. See also: November | December | January.
