S
M
T
W
T
F
S
1
87°
76°
2
90°
75°
3
88°
77°
4
92°
76°
5
82°
75°
6
88°
75°
7
89°
75°
8
85°
75°
9
89°
75°
10
90°
77°
11
85°
73°
12
88°
73°
13
91°
75°
14
92°
75°
15
91°
74°
16
88°
74°
17
85°
77°
18
85°
76°
19
89°
75°
20
88°
76°
21
93°
76°
22
93°
78°
23
90°
76°
24
91°
76°
25
87°
75°
26
85°
74°
27
86°
75°
28
82°
76°
29
79°
72°
30
88°
72°
31
89°
76°
1
78°
73°
2
89°
72°
3
90°
76°
4
80°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Porto Velho
Porto Velho's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Porto Velho. See also: April | May | June.