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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
31
+26
+10
31 August, sun
+26
+10
Feels like
+16
611 mmHg
58%
3.4
m/s
SW
31 August, Sunday. day, 26°; night, 10°; clear
1
+25
+10
1 September, mon
+25
+10
Feels like
+15
611 mmHg
58%
3.3
m/s
SW
1 September, Monday. day, 25°; night, 10°; rain
2
+25
+10
2 September, tue
+25
+10
Feels like
+15
612 mmHg
57%
3.3
m/s
SW
2 September, Tuesday. day, 25°; night, 10°; clear
3
+25
+10
3 September, wed
+25
+10
Feels like
+15
612 mmHg
57%
3.2
m/s
SW
3 September, Wednesday. day, 25°; night, 10°; clear
4
+25
+10
4 September, thu
+25
+10
Feels like
+15
612 mmHg
58%
3.2
m/s
SW
4 September, Thursday. day, 25°; night, 10°; clear
5
+25
+10
5 September, fri
+25
+10
Feels like
+15
612 mmHg
58%
3.4
m/s
SW
5 September, Friday. day, 25°; night, 10°; rain
6
+25
+10
6 September, sat
+25
+10
Feels like
+14
612 mmHg
58%
3.5
m/s
SW
6 September, Saturday. day, 25°; night, 10°; rain
7
+24
+9
7 September, sun
+24
+9
Feels like
+14
612 mmHg
58%
3.4
m/s
SW
7 September, Sunday. day, 24°; night, 9°; clear
8
+24
+8
8 September, mon
+24
+8
Feels like
+13
611 mmHg
61%
3.5
m/s
S
8 September, Monday. day, 24°; night, 8°; rain
9
+23
+8
9 September, tue
+23
+8
Feels like
+12
611 mmHg
62%
3.4
m/s
SW
9 September, Tuesday. day, 23°; night, 8°; rain
10
+22
+8
10 September, wed
+22
+8
Feels like
+12
611 mmHg
63%
3.2
m/s
SW
10 September, Wednesday. day, 22°; night, 8°; rain
11
+22
+8
11 September, thu
+22
+8
Feels like
+12
611 mmHg
61%
3.3
m/s
S
11 September, Thursday. day, 22°; night, 8°; partly cloudy
12
+22
+8
12 September, fri
+22
+8
Feels like
+12
611 mmHg
62%
3.4
m/s
S
12 September, Friday. day, 22°; night, 8°; rain
13
+22
+7
13 September, sat
+22
+7
Feels like
+12
610 mmHg
60%
3.2
m/s
S
13 September, Saturday. day, 22°; night, 7°; rain
14
+22
+8
14 September, sun
+22
+8
Feels like
+12
611 mmHg
61%
3.3
m/s
S
14 September, Sunday. day, 22°; night, 8°; rain
15
+22
+8
15 September, mon
+22
+8
Feels like
+12
610 mmHg
60%
3.1
m/s
SW
15 September, Monday. day, 22°; night, 8°; clear
16
+23
+8
16 September, tue
+23
+8
Feels like
+12
610 mmHg
57%
3.4
m/s
SW
16 September, Tuesday. day, 23°; night, 8°; clear
17
+23
+8
17 September, wed
+23
+8
Feels like
+12
609 mmHg
56%
3.5
m/s
SW
17 September, Wednesday. day, 23°; night, 8°; clear
18
+22
+7
18 September, thu
+22
+7
Feels like
+11
609 mmHg
57%
3.6
m/s
SW
18 September, Thursday. day, 22°; night, 7°; clear
19
+22
+7
19 September, fri
+22
+7
Feels like
+11
609 mmHg
56%
3.7
m/s
SW
19 September, Friday. day, 22°; night, 7°; clear
20
+21
+7
20 September, sat
+21
+7
Feels like
+10
609 mmHg
58%
3.6
m/s
SW
20 September, Saturday. day, 21°; night, 7°; partly cloudy
21
+20
+6
21 September, sun
+20
+6
Feels like
+9
609 mmHg
60%
3.7
m/s
S
21 September, Sunday. day, 20°; night, 6°; partly cloudy
22
+19
+5
22 September, mon
+19
+5
Feels like
+8
609 mmHg
64%
3.3
m/s
S
22 September, Monday. day, 19°; night, 5°; rain
23
+19
+6
23 September, tue
+19
+6
Feels like
+9
609 mmHg
62%
3.7
m/s
SW
23 September, Tuesday. day, 19°; night, 6°; rain
24
+19
+5
24 September, wed
+19
+5
Feels like
+9
610 mmHg
60%
3.4
m/s
S
24 September, Wednesday. day, 19°; night, 5°; clear
25
+21
+5
25 September, thu
+21
+5
Feels like
+9
610 mmHg
60%
3.2
m/s
SW
25 September, Thursday. day, 21°; night, 5°; clear
26
+22
+5
26 September, fri
+22
+5
Feels like
+9
609 mmHg
57%
3.2
m/s
SW
26 September, Friday. day, 22°; night, 5°; clear
27
+21
+6
27 September, sat
+21
+6
Feels like
+9
610 mmHg
57%
3.3
m/s
SW
27 September, Saturday. day, 21°; night, 6°; clear
28
+20
+5
28 September, sun
+20
+5
Feels like
+9
611 mmHg
61%
3.3
m/s
S
28 September, Sunday. day, 20°; night, 5°; clear
29
+21
+6
29 September, mon
+21
+6
Feels like
+9
610 mmHg
58%
3.5
m/s
SW
29 September, Monday. day, 21°; night, 6°; clear
30
+20
+6
30 September, tue
+20
+6
Feels like
+9
609 mmHg
58%
3.6
m/s
SW
30 September, Tuesday. day, 20°; night, 6°; partly cloudy
1
+19
+5
1 October, wed
+19
+5
Feels like
+8
609 mmHg
61%
3.4
m/s
S
1 October, Wednesday. day, 19°; night, 5°; clear
2
+19
+5
2 October, thu
+19
+5
Feels like
+8
609 mmHg
62%
3.2
m/s
SW
2 October, Thursday. day, 19°; night, 5°; rain
3
+18
+5
3 October, fri
+18
+5
Feels like
+8
608 mmHg
61%
3.5
m/s
SW
3 October, Friday. day, 18°; night, 5°; clear
4
+18
+4
4 October, sat
+18
+4
Feels like
+6
608 mmHg
63%
3.5
m/s
S
4 October, Saturday. day, 18°; night, 4°; rain
Average data for 10 years
Longmont September
15
sunny days
11
days with precipitation
2
cloudy days
15 sunny days; 11 days with precipitation; 2 cloudy days;
58
%
air humidity
1.9
m/s
Wind
SW
60
mm of precipitation
(9% of annual average)
air humidity 58%; 60 millimeters of precipitation (9% of annual average); Wind south-westerly 1.9 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SW
SW
SW
SW
SW
SW
SW
S
SW
SW
S
S
S
S
SW
SW
SW
SW
SW
SW
S
S
SW
S
SW
SW
SW
S
SW
SW
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
Breckenridge
Lakewood
Steamboat Springs
Telluride
Aspen
Fort Collins
Aurora
Cities with similar weather in September
Podgorica
Toronto
Genoa
Boston
Zagreb
Bilbao
San Remo
Como
Triest
