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September weather forecast in Longmont
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
622 mmHg
34%
5.3
m/s
SE
1 September, Sunday. day, 26°; night, 19°; clear
2
+25
+18
2 September, mon
+25
+18
Feels like
+22
622 mmHg
31%
5.3
m/s
E
2 September, Monday. day, 25°; night, 18°; clear
3
+25
+17
3 September, tue
+25
+17
Feels like
+22
622 mmHg
31%
4.9
m/s
W
3 September, Tuesday. day, 25°; night, 17°; partly cloudy
4
+24
+17
4 September, wed
+24
+17
Feels like
+21
621 mmHg
34%
5.5
m/s
SE
4 September, Wednesday. day, 24°; night, 17°; clear
5
+23
+16
5 September, thu
+23
+16
Feels like
+20
622 mmHg
38%
6
m/s
NE
5 September, Thursday. day, 23°; night, 16°; clear
6
+23
+17
6 September, fri
+23
+17
Feels like
+20
622 mmHg
36%
5.4
m/s
SE
6 September, Friday. day, 23°; night, 17°; clear
7
+24
+16
7 September, sat
+24
+16
Feels like
+21
622 mmHg
33%
4.6
m/s
NE
7 September, Saturday. day, 24°; night, 16°; clear
8
+23
+16
8 September, sun
+23
+16
Feels like
+20
621 mmHg
34%
4.5
m/s
SE
8 September, Sunday. day, 23°; night, 16°; clear
9
+23
+16
9 September, mon
+23
+16
Feels like
+19
622 mmHg
31%
4.9
m/s
SE
9 September, Monday. day, 23°; night, 16°; partly cloudy
10
+22
+15
10 September, tue
+22
+15
Feels like
+19
623 mmHg
43%
5
m/s
SE
10 September, Tuesday. day, 22°; night, 15°; clear
11
+21
+14
11 September, wed
+21
+14
Feels like
+18
623 mmHg
46%
3.9
m/s
E
11 September, Wednesday. day, 21°; night, 14°; clear
12
+21
+15
12 September, thu
+21
+15
Feels like
+19
621 mmHg
46%
5
m/s
E
12 September, Thursday. day, 21°; night, 15°; clear
13
+21
+14
13 September, fri
+21
+14
Feels like
+18
621 mmHg
40%
5.3
m/s
E
13 September, Friday. day, 21°; night, 14°; clear
14
+20
+14
14 September, sat
+20
+14
Feels like
+17
622 mmHg
44%
6
m/s
E
14 September, Saturday. day, 20°; night, 14°; clear
15
+22
+15
15 September, sun
+22
+15
Feels like
+19
622 mmHg
36%
4.8
m/s
SE
15 September, Sunday. day, 22°; night, 15°; clear
16
+22
+16
16 September, mon
+22
+16
Feels like
+19
621 mmHg
34%
5.1
m/s
E
16 September, Monday. day, 22°; night, 16°; clear
17
+22
+15
17 September, tue
+22
+15
Feels like
+18
621 mmHg
34%
5
m/s
S
17 September, Tuesday. day, 22°; night, 15°; clear
18
+24
+15
18 September, wed
+24
+15
Feels like
+20
620 mmHg
28%
5.3
m/s
SW
18 September, Wednesday. day, 24°; night, 15°; clear
19
+23
+15
19 September, thu
+23
+15
Feels like
+19
621 mmHg
30%
5.1
m/s
S
19 September, Thursday. day, 23°; night, 15°; clear
20
+21
+16
20 September, fri
+21
+16
Feels like
+17
621 mmHg
34%
5
m/s
SE
20 September, Friday. day, 21°; night, 16°; partly cloudy
21
+21
+14
21 September, sat
+21
+14
Feels like
+17
620 mmHg
37%
5.5
m/s
N
21 September, Saturday. day, 21°; night, 14°; clear
22
+19
+13
22 September, sun
+19
+13
Feels like
+16
621 mmHg
40%
5.6
m/s
NE
22 September, Sunday. day, 19°; night, 13°; clear
23
+21
+14
23 September, mon
+21
+14
Feels like
+17
622 mmHg
37%
5.9
m/s
SE
23 September, Monday. day, 21°; night, 14°; clear
24
+21
+15
24 September, tue
+21
+15
Feels like
+17
621 mmHg
34%
5
m/s
S
24 September, Tuesday. day, 21°; night, 15°; rain
25
+22
+16
25 September, wed
+22
+16
Feels like
+19
621 mmHg
31%
5.1
m/s
NW
25 September, Wednesday. day, 22°; night, 16°; clear
26
+20
+14
26 September, thu
+20
+14
Feels like
+17
622 mmHg
40%
4.6
m/s
E
26 September, Thursday. day, 20°; night, 14°; clear
27
+20
+15
27 September, fri
+20
+15
Feels like
+17
623 mmHg
40%
4.8
m/s
E
27 September, Friday. day, 20°; night, 15°; clear
28
+20
+13
28 September, sat
+20
+13
Feels like
+16
623 mmHg
40%
5
m/s
SE
28 September, Saturday. day, 20°; night, 13°; clear
29
+21
+14
29 September, sun
+21
+14
Feels like
+17
621 mmHg
33%
5.6
m/s
W
29 September, Sunday. day, 21°; night, 14°; clear
30
+19
+12
30 September, mon
+19
+12
Feels like
+15
621 mmHg
36%
5.5
m/s
E
30 September, Monday. day, 19°; night, 12°; rain
1
+17
+12
1 October, tue
+17
+12
Feels like
+13
621 mmHg
43%
5.1
m/s
N
1 October, Tuesday. day, 17°; night, 12°; clear
2
+17
+12
2 October, wed
+17
+12
Feels like
+14
620 mmHg
37%
4.9
m/s
SE
2 October, Wednesday. day, 17°; night, 12°; partly cloudy
3
+17
+10
3 October, thu
+17
+10
Feels like
+13
619 mmHg
44%
5.5
m/s
NW
3 October, Thursday. day, 17°; night, 10°; clear
4
+15
+9
4 October, fri
+15
+9
Feels like
+11
619 mmHg
43%
4.5
m/s
SW
4 October, Friday. day, 15°; night, 9°; partly cloudy
5
+15
+9
5 October, sat
+15
+9
Feels like
+11
619 mmHg
41%
4.6
m/s
SW
5 October, Saturday. day, 15°; night, 9°; partly cloudy
Average data for 10 years
Longmont September
25
sunny days
2
days with precipitation
3
cloudy days
25 sunny days; 2 days with precipitation; 3 cloudy days;
37
%
air humidity
3.5
m/s
Wind
SE
33
mm of precipitation
(10% of annual average)
air humidity 37%; 33 millimeters of precipitation (10% of annual average); Wind south-easterly 3.5 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SE
E
W
SE
NE
SE
NE
SE
SE
SE
E
E
E
E
SE
E
S
SW
S
SE
N
NE
SE
S
NW
E
E
SE
W
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
Cities near you
Denver
Colorado Springs
Cheyenne
Littleton
Boulder
Aspen
Telluride
Montrose
Trinidad
Cities with similar weather in September
Podgorica
Toronto
Genoa
Boston
Zagreb
Bilbao
San Remo
Como
Triest
