S
M
T
W
T
F
S
30
73°
57°
31
72°
56°
1
72°
54°
2
70°
52°
3
69°
53°
4
70°
54°
5
71°
56°
6
70°
55°
7
71°
56°
8
71°
56°
9
70°
55°
10
70°
55°
11
69°
54°
12
69°
55°
13
68°
55°
14
69°
52°
15
66°
53°
16
67°
52°
17
68°
53°
18
68°
49°
19
63°
48°
20
63°
52°
21
65°
53°
22
67°
53°
23
67°
54°
24
Hist. Avg.
61°
53°
25
Hist. Avg.
61°
53°
26
Hist. Avg.
61°
53°
27
Hist. Avg.
60°
52°
28
Hist. Avg.
60°
52°
29
Hist. Avg.
60°
52°
30
Hist. Avg.
60°
52°
1
Hist. Avg.
59°
51°
2
Hist. Avg.
59°
51°
3
Hist. Avg.
59°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Haarlem
Haarlem's September 2026 forecast shows daily high temperatures ranging from 63° to 73°, with overnight lows between 48° and 57°. The average high for September is 69° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Haarlem. See also: October | November | December.
