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Monthly weather forecast in Boulder
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
15
+18
+12
15 September, sun
+18
+12
Feels like
+15
648 mmHg
40%
4.8
m/s
SE
15 September, Sunday. day, 18°; night, 12°; clear
16
+18
+12
16 September, mon
+18
+12
Feels like
+15
647 mmHg
38%
5.5
m/s
E
16 September, Monday. day, 18°; night, 12°; clear
17
+18
+11
17 September, tue
+18
+11
Feels like
+14
647 mmHg
40%
5.1
m/s
S
17 September, Tuesday. day, 18°; night, 11°; clear
18
+19
+12
18 September, wed
+19
+12
Feels like
+15
646 mmHg
34%
5.5
m/s
SW
18 September, Wednesday. day, 19°; night, 12°; clear
19
+19
+11
19 September, thu
+19
+11
Feels like
+15
647 mmHg
34%
5.4
m/s
SW
19 September, Thursday. day, 19°; night, 11°; clear
20
+18
+12
20 September, fri
+18
+12
Feels like
+13
647 mmHg
41%
5.4
m/s
SE
20 September, Friday. day, 18°; night, 12°; partly cloudy
21
September
+21
+9
21 September, sat
+21
+9
Feels like
+14
630 mmHg
45%
4.6
m/s
E
Climate normal
+17
+11
21 September, Saturday. day, 21°; night, 9°; partly cloudy
22
+17
+8
22 September, sun
+17
+8
Feels like
+11
629 mmHg
74%
2.9
m/s
SE
Climate normal
+16
+9
22 September, Sunday. day, 17°; night, 8°; rain
23
+26
+10
23 September, mon
+26
+10
Feels like
+15
627 mmHg
43%
4.9
m/s
W
Climate normal
+17
+11
23 September, Monday. day, 26°; night, 10°; thunderstorm with rain
24
+22
+11
24 September, tue
+22
+11
Feels like
+15
631 mmHg
49%
3.9
m/s
E
Climate normal
+17
+11
24 September, Tuesday. day, 22°; night, 11°; partly cloudy
25
+27
+13
25 September, wed
+27
+13
Feels like
+18
631 mmHg
40%
4
m/s
SE
Climate normal
+18
+12
25 September, Wednesday. day, 27°; night, 13°; clear
26
+29
+15
26 September, thu
+29
+15
Feels like
+17
629 mmHg
34%
6.1
m/s
S
Climate normal
+17
+11
26 September, Thursday. day, 29°; night, 15°; clear
27
+28
+14
27 September, fri
+28
+14
Feels like
+16
627 mmHg
35%
4.9
m/s
W
Climate normal
+16
+11
27 September, Friday. day, 28°; night, 14°; overcast
28
+28
+13
28 September, sat
+28
+13
Feels like
+17
627 mmHg
32%
5.1
m/s
W
Climate normal
+16
+10
28 September, Saturday. day, 28°; night, 13°; partly cloudy
29
+28
+13
29 September, sun
+28
+13
Feels like
+17
627 mmHg
42%
4.5
m/s
W
Climate normal
+17
+10
29 September, Sunday. day, 28°; night, 13°; mostly clear
30
+25
+13
30 September, mon
+25
+13
Feels like
+14
633 mmHg
42%
6.3
m/s
W
Climate normal
+16
+9
30 September, Monday. day, 25°; night, 13°; partly cloudy
1 October
+25
+13
1 October, tue
+25
+13
Feels like
+12
625 mmHg
48%
9.9
m/s
W
Climate normal
+14
+8
1 October, Tuesday. day, 25°; night, 13°; mostly clear
2
+29
+14
2 October, wed
+29
+14
Feels like
+16
630 mmHg
43%
6.5
m/s
W
Climate normal
+14
+9
2 October, Wednesday. day, 29°; night, 14°; mostly clear
3
+30
+7
3 October, thu
+30
+7
Feels like
+19
633 mmHg
38%
5.4
m/s
W
Climate normal
+14
+6
3 October, Thursday. day, 30°; night, 7°; mostly clear
4
+16
+7
4 October, fri
+16
+7
Feels like
+7
548 mmHg
74%
4.3
m/s
SE
Climate normal
+12
+6
4 October, Friday. day, 16°; night, 7°; light rain
5
+13
+5
5 October, sat
+13
+5
Feels like
+7
546 mmHg
93%
2
m/s
S
Climate normal
+11
+5
5 October, Saturday. day, 13°; night, 5°; rain
6
+12
+6
6 October, sun
+12
+6
Feels like
+6
543 mmHg
95%
3.1
m/s
NW
Climate normal
+12
+6
6 October, Sunday. day, 12°; night, 6°; rain
7
+12
+2
7 October, mon
+12
+2
Feels like
+7
544 mmHg
92%
2.1
m/s
E
Climate normal
+11
+5
7 October, Monday. day, 12°; night, 2°; light rain
8
+10
+2
8 October, tue
+10
+2
Feels like
+3
550 mmHg
82%
1.5
m/s
SW
Climate normal
+10
+4
8 October, Tuesday. day, 10°; night, 2°; light rain
9
+12
+2
9 October, wed
+12
+2
Feels like
+5
548 mmHg
68%
2.4
m/s
NW
Climate normal
+10
+5
9 October, Wednesday. day, 12°; night, 2°; clear
10
+11
+2
10 October, thu
+11
+2
Feels like
+4
547 mmHg
67%
2.1
m/s
NW
Climate normal
+12
+7
10 October, Thursday. day, 11°; night, 2°; light rain
11
+12
+1
11 October, fri
+12
+1
Feels like
+5
550 mmHg
67%
1.9
m/s
S
Climate normal
+10
+4
11 October, Friday. day, 12°; night, 1°; clear
12
+13
0
12 October, sat
+13
0
Feels like
+4
551 mmHg
89%
2.2
m/s
W
Climate normal
+10
+4
12 October, Saturday. day, 13°; night, 0°; rain
13
+13
+3
13 October, sun
+13
+3
Feels like
+5
548 mmHg
82%
2.2
m/s
W
Climate normal
+11
+6
13 October, Sunday. day, 13°; night, 3°; clear
14
+14
+1
14 October, mon
+14
+1
Feels like
+4
548 mmHg
67%
3.5
m/s
NW
Climate normal
+12
+6
14 October, Monday. day, 14°; night, 1°; clear
15
+12
+4
15 October, tue
+12
+4
Feels like
+3
549 mmHg
50%
2
m/s
SE
Climate normal
+13
+7
15 October, Tuesday. day, 12°; night, 4°; clear
16
+15
+4
16 October, wed
+15
+4
Feels like
+4
550 mmHg
64%
3
m/s
W
Climate normal
+13
+6
16 October, Wednesday. day, 15°; night, 4°; clear
17
+13
+3
17 October, thu
+13
+3
Feels like
+4
549 mmHg
69%
2.9
m/s
W
Climate normal
+11
+6
17 October, Thursday. day, 13°; night, 3°; light rain
18
+12
+4
18 October, fri
+12
+4
Feels like
+6
549 mmHg
91%
2
m/s
E
Climate normal
+13
+7
18 October, Friday. day, 12°; night, 4°; light rain
19
+14
+2
19 October, sat
+14
+2
Feels like
+6
552 mmHg
81%
2.3
m/s
SE
Climate normal
+12
+6
19 October, Saturday. day, 14°; night, 2°; clear
Average for 30 days
19
sunny days
6
days with precipitation
5
cloudy days
19 sunny days; 6 days with precipitation; 5 cloudy days;
63
%
air humidity
3.7
m/s
Wind
W
18
mm of precipitation
(4% of annual average)
air humidity 63%; 18 millimeters of precipitation (4% of annual average); Wind westerly 3.7 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
E
SE
W
E
SE
S
W
W
W
W
W
W
W
SE
S
NW
E
SW
NW
NW
S
W
W
NW
SE
W
W
E
SE
SW
21
Average data for 10 years
22
23
24
25
26
27
28
29
30
1
October
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Daytime temperature
Night-time temperature
