10 day forecast
Monthly forecast
Weather map
City or area
Find
Sign up
Log in
Go to comparison
September weather forecast in Fort Collins
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
+19
1 September, sun
+26
+19
Feels like
+23
630 mmHg
34%
5.1
m/s
S
1 September, Sunday. day, 26°; night, 19°; clear
2
+25
+18
2 September, mon
+25
+18
Feels like
+22
631 mmHg
31%
5.5
m/s
SE
2 September, Monday. day, 25°; night, 18°; clear
3
+25
+17
3 September, tue
+25
+17
Feels like
+21
630 mmHg
31%
5.4
m/s
SW
3 September, Tuesday. day, 25°; night, 17°; clear
4
+24
+18
4 September, wed
+24
+18
Feels like
+21
630 mmHg
34%
5.3
m/s
S
4 September, Wednesday. day, 24°; night, 18°; clear
5
+23
+16
5 September, thu
+23
+16
Feels like
+19
630 mmHg
38%
6.9
m/s
NW
5 September, Thursday. day, 23°; night, 16°; partly cloudy
6
+23
+17
6 September, fri
+23
+17
Feels like
+20
630 mmHg
37%
6
m/s
S
6 September, Friday. day, 23°; night, 17°; partly cloudy
7
+23
+16
7 September, sat
+23
+16
Feels like
+20
630 mmHg
33%
4.6
m/s
NE
7 September, Saturday. day, 23°; night, 16°; partly cloudy
8
+23
+16
8 September, sun
+23
+16
Feels like
+20
630 mmHg
36%
5.1
m/s
S
8 September, Sunday. day, 23°; night, 16°; clear
9
+23
+16
9 September, mon
+23
+16
Feels like
+19
631 mmHg
31%
5
m/s
SE
9 September, Monday. day, 23°; night, 16°; partly cloudy
10
+21
+15
10 September, tue
+21
+15
Feels like
+18
632 mmHg
43%
5.3
m/s
SE
10 September, Tuesday. day, 21°; night, 15°; clear
11
+20
+14
11 September, wed
+20
+14
Feels like
+18
631 mmHg
46%
4.3
m/s
SE
11 September, Wednesday. day, 20°; night, 14°; clear
12
+21
+14
12 September, thu
+21
+14
Feels like
+19
629 mmHg
46%
5.4
m/s
SE
12 September, Thursday. day, 21°; night, 14°; clear
13
+21
+14
13 September, fri
+21
+14
Feels like
+17
630 mmHg
40%
5.6
m/s
SE
13 September, Friday. day, 21°; night, 14°; clear
14
+20
+13
14 September, sat
+20
+13
Feels like
+16
631 mmHg
46%
6.3
m/s
E
14 September, Saturday. day, 20°; night, 13°; rain
15
+22
+15
15 September, sun
+22
+15
Feels like
+19
631 mmHg
36%
4.5
m/s
SW
15 September, Sunday. day, 22°; night, 15°; clear
16
+22
+16
16 September, mon
+22
+16
Feels like
+18
630 mmHg
34%
5.3
m/s
SE
16 September, Monday. day, 22°; night, 16°; partly cloudy
17
+21
+15
17 September, tue
+21
+15
Feels like
+18
630 mmHg
34%
5
m/s
S
17 September, Tuesday. day, 21°; night, 15°; clear
18
+23
+15
18 September, wed
+23
+15
Feels like
+20
629 mmHg
28%
5
m/s
W
18 September, Wednesday. day, 23°; night, 15°; clear
19
+22
+15
19 September, thu
+22
+15
Feels like
+18
629 mmHg
30%
5.6
m/s
SW
19 September, Thursday. day, 22°; night, 15°; clear
20
+21
+16
20 September, fri
+21
+16
Feels like
+17
630 mmHg
34%
5.4
m/s
S
20 September, Friday. day, 21°; night, 16°; partly cloudy
21
+20
+14
21 September, sat
+20
+14
Feels like
+16
629 mmHg
37%
5.9
m/s
N
21 September, Saturday. day, 20°; night, 14°; clear
22
+19
+13
22 September, sun
+19
+13
Feels like
+15
629 mmHg
40%
6.5
m/s
NW
22 September, Sunday. day, 19°; night, 13°; clear
23
+21
+14
23 September, mon
+21
+14
Feels like
+16
630 mmHg
37%
6.6
m/s
SE
23 September, Monday. day, 21°; night, 14°; clear
24
+21
+15
24 September, tue
+21
+15
Feels like
+17
630 mmHg
33%
5.6
m/s
S
24 September, Tuesday. day, 21°; night, 15°; clear
25
+22
+16
25 September, wed
+22
+16
Feels like
+19
630 mmHg
31%
5.5
m/s
W
25 September, Wednesday. day, 22°; night, 16°; clear
26
+20
+14
26 September, thu
+20
+14
Feels like
+17
630 mmHg
40%
4.9
m/s
E
26 September, Thursday. day, 20°; night, 14°; clear
27
+19
+15
27 September, fri
+19
+15
Feels like
+16
631 mmHg
40%
4.8
m/s
SE
27 September, Friday. day, 19°; night, 15°; partly cloudy
28
+19
+13
28 September, sat
+19
+13
Feels like
+15
631 mmHg
41%
5.1
m/s
S
28 September, Saturday. day, 19°; night, 13°; clear
29
+21
+14
29 September, sun
+21
+14
Feels like
+17
629 mmHg
34%
5.5
m/s
W
29 September, Sunday. day, 21°; night, 14°; clear
30
+19
+12
30 September, mon
+19
+12
Feels like
+14
630 mmHg
37%
7
m/s
N
30 September, Monday. day, 19°; night, 12°; rain
1
+17
+12
1 October, tue
+17
+12
Feels like
+13
630 mmHg
43%
4.9
m/s
N
1 October, Tuesday. day, 17°; night, 12°; clear
2
+17
+12
2 October, wed
+17
+12
Feels like
+13
629 mmHg
37%
5.1
m/s
SE
2 October, Wednesday. day, 17°; night, 12°; partly cloudy
3
+16
+9
3 October, thu
+16
+9
Feels like
+12
627 mmHg
47%
5.8
m/s
W
3 October, Thursday. day, 16°; night, 9°; clear
4
+15
+9
4 October, fri
+15
+9
Feels like
+10
627 mmHg
41%
5.6
m/s
W
4 October, Friday. day, 15°; night, 9°; partly cloudy
5
+14
+8
5 October, sat
+14
+8
Feels like
+11
628 mmHg
43%
5.1
m/s
W
5 October, Saturday. day, 14°; night, 8°; partly cloudy
Average data for 10 years
Fort Collins September
21
sunny days
2
days with precipitation
7
cloudy days
21 sunny days; 2 days with precipitation; 7 cloudy days;
37
%
air humidity
3.7
m/s
Wind
S
30
mm of precipitation
(10% of annual average)
air humidity 37%; 30 millimeters of precipitation (10% of annual average); Wind southerly 3.7 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
S
SE
SW
S
NW
S
NE
S
SE
SE
SE
SE
SE
E
SW
SE
S
W
SW
S
N
NW
SE
S
W
E
SE
S
W
N
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
Cities near you
Denver
Colorado Springs
Littleton
Cheyenne
Aspen
Telluride
Boulder
Rapid City
Montrose
Cities with similar weather in September
Podgorica
Toronto
Boston
Zagreb
Bilbao
Como
Detroit
Milwaukee
Buffalo
