Ottumwa September Weather
Averages and records for weather in
Ottumwa, Iowa in the month of September.
Typical Ottumwa September Weather
1991–2020
|
| Average daily high |
76.6 °F |
| Average daily low |
54.0 °F |
| Average monthly precipitation |
3.5 inches |
| Daily chance of precipitation |
26.3% |
Note: Daily averages are a moving average which includes 14 days before and after
| Day |
Average (°F) |
Record (°F) |
| High |
Low |
High |
Low |
| September 1 |
81.2 |
59.7 |
103 |
42 |
| September 2 |
81.0 |
59.4 |
102 |
40 |
| September 3 |
80.8 |
59.1 |
100 |
40 |
| September 4 |
80.7 |
58.9 |
103 |
43 |
| September 5 |
80.4 |
58.6 |
107 |
42 |
| September 6 |
80.1 |
58.2 |
103 |
43 |
| September 7 |
79.7 |
57.9 |
101 |
41 |
| September 8 |
79.3 |
57.4 |
104 |
43 |
| September 9 |
78.9 |
56.9 |
102 |
40 |
| September 10 |
78.6 |
56.5 |
100 |
40 |
| September 11 |
78.2 |
56.0 |
101 |
35 |
| September 12 |
77.8 |
55.5 |
97 |
35 |
| September 13 |
77.5 |
55.1 |
99 |
36 |
| September 14 |
77.0 |
54.6 |
99 |
35 |
| September 15 |
76.7 |
54.2 |
99 |
32 |
| September 16 |
76.4 |
53.8 |
94 |
32 |
| September 17 |
76.1 |
53.4 |
98 |
34 |
| September 18 |
75.6 |
53.0 |
96 |
33 |
| September 19 |
75.2 |
52.7 |
98 |
34 |
| September 20 |
74.8 |
52.3 |
95 |
32 |
| September 21 |
74.3 |
51.8 |
95 |
36 |
| September 22 |
73.9 |
51.5 |
99 |
33 |
| September 23 |
73.6 |
51.1 |
93 |
30 |
| September 24 |
73.3 |
50.7 |
91 |
32 |
| September 25 |
73.0 |
50.4 |
89 |
30 |
| September 26 |
72.5 |
49.9 |
94 |
29 |
| September 27 |
72.2 |
49.5 |
92 |
30 |
| September 28 |
71.8 |
49.1 |
99 |
23 |
| September 29 |
71.4 |
48.7 |
93 |
26 |
| September 30 |
71.0 |
48.3 |
93 |
26 |
Weather Station Details
| Years |
Station |
Coordinates |
| 1949–2024 |
Ottumwa Industrial Airport |
location |
| 1894–1948 |
Ottumwa 1 WSW |
location |