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September weather forecast in Iowa City
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
1
+26
+20
1 September, Sunday. day, 26°; night, 20°; clear
2
+26
+20
2 September, Monday. day, 26°; night, 20°; clear
3
+25
+20
3 September, Tuesday. day, 25°; night, 20°; partly cloudy
4
+24
+19
4 September, Wednesday. day, 24°; night, 19°; partly cloudy
5
+25
+18
5 September, Thursday. day, 25°; night, 18°; clear
6
+25
+19
6 September, Friday. day, 25°; night, 19°; clear
7
+24
+19
7 September, Saturday. day, 24°; night, 19°; clear
8
+25
+18
8 September, Sunday. day, 25°; night, 18°; clear
9
+24
+19
9 September, Monday. day, 24°; night, 19°; clear
10
+22
+17
10 September, Tuesday. day, 22°; night, 17°; clear
11
+23
+17
11 September, Wednesday. day, 23°; night, 17°; clear
12
+23
+17
12 September, Thursday. day, 23°; night, 17°; clear
13
+22
+17
13 September, Friday. day, 22°; night, 17°; partly cloudy
14
+21
+17
14 September, Saturday. day, 21°; night, 17°; partly cloudy
15
+22
+16
15 September, Sunday. day, 22°; night, 16°; clear
16
+22
+15
16 September, Monday. day, 22°; night, 15°; clear
17
+22
+17
17 September, Tuesday. day, 22°; night, 17°; rain
18
+22
+17
18 September, Wednesday. day, 22°; night, 17°; clear
19
+24
+18
19 September, Thursday. day, 24°; night, 18°; clear
20
+23
+18
20 September, Friday. day, 23°; night, 18°; clear
21
+22
+18
21 September, Saturday. day, 22°; night, 18°; partly cloudy
22
+23
+17
22 September, Sunday. day, 23°; night, 17°; rain
23
+22
+18
23 September, Monday. day, 22°; night, 18°; partly cloudy
24
+22
+17
24 September, Tuesday. day, 22°; night, 17°; clear
25
+22
+16
25 September, Wednesday. day, 22°; night, 16°; rain
26
+22
+16
26 September, Thursday. day, 22°; night, 16°; clear
27
+21
+16
27 September, Friday. day, 21°; night, 16°; partly cloudy
28
+20
+16
28 September, Saturday. day, 20°; night, 16°; clear
29
+19
+14
29 September, Sunday. day, 19°; night, 14°; clear
30
+18
+13
30 September, Monday. day, 18°; night, 13°; clear
1
+18
+14
1 October, Tuesday. day, 18°; night, 14°; partly cloudy
2
+18
+14
2 October, Wednesday. day, 18°; night, 14°; clear
3
+18
+13
3 October, Thursday. day, 18°; night, 13°; clear
4
+18
+13
4 October, Friday. day, 18°; night, 13°; clear
5
+18
+13
5 October, Saturday. day, 18°; night, 13°; partly cloudy
Average data for 10 years
Iowa City September
20
sunny days
3
days with precipitation
7
cloudy days
20 sunny days; 3 days with precipitation; 7 cloudy days;
58
%
air humidity
4.5
m/s
Wind
S
63
mm of precipitation
(8% of annual average)
air humidity 58%; 63 millimeters of precipitation (8% of annual average); Wind southerly 4.5 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SE
W
W
NE
S
W
S
E
SE
NW
SW
S
S
SE
SE
S
S
S
S
W
S
S
SE
E
E
W
W
N
N
E
1
Average data for 10 years
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Daytime temperature
Night-time temperature
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