S
M
T
W
T
F
S
1
94°
77°
2
96°
77°
3
96°
77°
4
95°
78°
5
91°
76°
6
87°
75°
7
93°
75°
8
94°
74°
9
96°
75°
10
96°
76°
11
95°
76°
12
95°
76°
13
92°
75°
14
94°
74°
15
94°
75°
16
95°
76°
17
94°
74°
18
95°
75°
19
98°
75°
20
96°
76°
21
95°
76°
22
95°
76°
23
95°
76°
24
96°
76°
25
96°
76°
26
93°
76°
27
96°
75°
28
96°
75°
29
98°
75°
30
94°
75°
31
99°
77°
1
99°
77°
2
98°
77°
3
98°
76°
4
98°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Phnom Penh
Phnom Penh'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 Phnom Penh. See also: April | May | June.