S
M
T
W
T
F
S
1
85°
77°
2
85°
77°
3
86°
56°
4
85°
56°
5
85°
76°
6
85°
78°
7
85°
77°
8
86°
75°
9
84°
76°
10
86°
76°
11
84°
76°
12
85°
77°
13
85°
76°
14
84°
76°
15
83°
76°
16
85°
78°
17
85°
78°
18
85°
78°
19
86°
77°
20
86°
77°
21
86°
77°
22
86°
76°
23
85°
74°
24
85°
76°
25
85°
78°
26
87°
77°
27
87°
77°
28
86°
78°
29
85°
75°
30
85°
76°
31
85°
76°
1
86°
75°
2
87°
78°
3
86°
78°
4
86°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Castries
Castries'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 Castries. See also: April | May | June.