S
M
T
W
T
F
S
27
88°
76°
28
89°
77°
29
88°
78°
30
89°
77°
1
88°
76°
2
89°
76°
3
88°
77°
4
88°
76°
5
89°
77°
6
89°
76°
7
88°
78°
8
88°
77°
9
87°
77°
10
Hist. Avg.
89°
75°
11
Hist. Avg.
88°
75°
12
Hist. Avg.
88°
75°
13
Hist. Avg.
88°
75°
14
Hist. Avg.
88°
75°
15
Hist. Avg.
88°
75°
16
Hist. Avg.
88°
75°
17
Hist. Avg.
88°
75°
18
Hist. Avg.
88°
75°
19
Hist. Avg.
88°
75°
20
Hist. Avg.
88°
75°
21
Hist. Avg.
88°
75°
22
Hist. Avg.
88°
75°
23
Hist. Avg.
88°
74°
24
Hist. Avg.
88°
74°
25
Hist. Avg.
88°
74°
26
Hist. Avg.
87°
74°
27
Hist. Avg.
87°
74°
28
Hist. Avg.
87°
74°
29
Hist. Avg.
87°
74°
30
Hist. Avg.
87°
74°
31
Hist. Avg.
87°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Río Grande
Río Grande's October 2026 forecast shows daily high temperatures ranging from 87° to 89°, with overnight lows between 76° and 78°. The average high for October is 88° with an average low of 77°. 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 Río Grande. See also: November | December | January.