S
M
T
W
T
F
S
27
75°
54°
28
78°
52°
29
81°
51°
30
81°
57°
1
82°
58°
2
83°
46°
3
82°
46°
4
72°
47°
5
71°
46°
6
72°
47°
7
73°
53°
8
76°
55°
9
79°
55°
10
81°
57°
11
82°
56°
12
81°
53°
13
79°
45°
14
70°
45°
15
67°
44°
16
66°
44°
17
68°
45°
18
68°
45°
19
69°
47°
20
70°
51°
21
71°
53°
22
74°
52°
23
75°
51°
24
74°
49°
25
68°
46°
26
72°
42°
27
66°
42°
28
63°
41°
29
63°
40°
30
Hist. Avg.
68°
43°
31
Hist. Avg.
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Union
Union's October 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 40° and 58°. The average high for October is 74° 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 Union. See also: November | December | January.