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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
+13
630 mmHg
45%
4.8
m/s
E
Climate normal
+17
+11
21 September, Saturday. day, 21°; night, 9°; light rain
22
+16
+7
22 September, sun
+16
+7
Feels like
+10
630 mmHg
74%
3.7
m/s
SE
Climate normal
+16
+9
22 September, Sunday. day, 16°; night, 7°; rain
23
+25
+11
23 September, mon
+25
+11
Feels like
+15
627 mmHg
42%
5.6
m/s
NW
Climate normal
+17
+11
23 September, Monday. day, 25°; night, 11°; mostly clear
24
+21
+10
24 September, tue
+21
+10
Feels like
+13
631 mmHg
55%
5.6
m/s
W
Climate normal
+17
+11
24 September, Tuesday. day, 21°; night, 10°; partly cloudy
25
+26
+12
25 September, wed
+26
+12
Feels like
+14
631 mmHg
41%
4.3
m/s
SE
Climate normal
+18
+12
25 September, Wednesday. day, 26°; night, 12°; clear
26
+29
+14
26 September, thu
+29
+14
Feels like
+16
629 mmHg
36%
6.2
m/s
W
Climate normal
+17
+11
26 September, Thursday. day, 29°; night, 14°; clear
27
+28
+14
27 September, fri
+28
+14
Feels like
+17
629 mmHg
36%
4.5
m/s
SE
Climate normal
+16
+11
27 September, Friday. day, 28°; night, 14°; mostly clear
28
+27
+13
28 September, sat
+27
+13
Feels like
+17
627 mmHg
38%
5
m/s
W
Climate normal
+16
+10
28 September, Saturday. day, 27°; night, 13°; mostly clear
29
+26
+13
29 September, sun
+26
+13
Feels like
+14
626 mmHg
41%
5.2
m/s
W
Climate normal
+17
+10
29 September, Sunday. day, 26°; night, 13°; heavy rain
30
+25
+10
30 September, mon
+25
+10
Feels like
+14
628 mmHg
41%
5.2
m/s
W
Climate normal
+16
+9
30 September, Monday. day, 25°; night, 10°; heavy rain
1 October
+28
+13
1 October, tue
+28
+13
Feels like
+16
628 mmHg
44%
4.4
m/s
SW
Climate normal
+14
+8
1 October, Tuesday. day, 28°; night, 13°; mostly clear
2
+30
+16
2 October, wed
+30
+16
Feels like
+17
628 mmHg
37%
5.4
m/s
SW
Climate normal
+14
+9
2 October, Wednesday. day, 30°; night, 16°; mostly clear
3
+18
+7
3 October, thu
+18
+7
Feels like
+9
550 mmHg
39%
2.5
m/s
E
Climate normal
+14
+6
3 October, Thursday. day, 18°; night, 7°; clear
4
+17
+7
4 October, fri
+17
+7
Feels like
+8
551 mmHg
36%
4.3
m/s
SE
Climate normal
+12
+6
4 October, Friday. day, 17°; night, 7°; overcast
5
+16
+7
5 October, sat
+16
+7
Feels like
+9
548 mmHg
46%
2
m/s
S
Climate normal
+11
+5
5 October, Saturday. day, 16°; night, 7°; partly cloudy
6
+15
+9
6 October, sun
+15
+9
Feels like
+8
549 mmHg
62%
3.1
m/s
NW
Climate normal
+12
+6
6 October, Sunday. day, 15°; night, 9°; light rain
7
+11
+7
7 October, mon
+11
+7
Feels like
+7
550 mmHg
88%
2.1
m/s
E
Climate normal
+11
+5
7 October, Monday. day, 11°; night, 7°; rain
8
+9
+7
8 October, tue
+9
+7
Feels like
+6
549 mmHg
94%
1.5
m/s
SW
Climate normal
+10
+4
8 October, Tuesday. day, 9°; night, 7°; rain
9
+11
+4
9 October, wed
+11
+4
Feels like
+6
548 mmHg
66%
2.4
m/s
NW
Climate normal
+10
+5
9 October, Wednesday. day, 11°; night, 4°; partly cloudy
10
+8
−2
10 October, thu
+8
−2
Feels like
+2
549 mmHg
49%
2.1
m/s
NW
Climate normal
+12
+7
10 October, Thursday. day, 8°; night, -2°; partly cloudy
11
+6
−1
11 October, fri
+6
−1
Feels like
−1
548 mmHg
39%
1.9
m/s
S
Climate normal
+10
+4
11 October, Friday. day, 6°; night, -1°; mostly clear
12
+11
+1
12 October, sat
+11
+1
Feels like
+2
547 mmHg
34%
2.2
m/s
W
Climate normal
+10
+4
12 October, Saturday. day, 11°; night, 1°; partly cloudy
13
+13
+2
13 October, sun
+13
+2
Feels like
+3
546 mmHg
52%
2.2
m/s
W
Climate normal
+11
+6
13 October, Sunday. day, 13°; night, 2°; mostly clear
14
+12
+3
14 October, mon
+12
+3
Feels like
+2
546 mmHg
47%
3.5
m/s
NW
Climate normal
+12
+6
14 October, Monday. day, 12°; night, 3°; mostly clear
15
+13
+3
15 October, tue
+13
+3
Feels like
+3
550 mmHg
39%
2
m/s
SE
Climate normal
+13
+7
15 October, Tuesday. day, 13°; night, 3°; clear
16
+12
0
16 October, wed
+12
0
Feels like
+3
549 mmHg
37%
3
m/s
W
Climate normal
+13
+6
16 October, Wednesday. day, 12°; night, 0°; clear
17
+14
+1
17 October, thu
+14
+1
Feels like
+1
549 mmHg
45%
2.9
m/s
W
Climate normal
+11
+6
17 October, Thursday. day, 14°; night, 1°; partly cloudy
18
+12
+3
18 October, fri
+12
+3
Feels like
+3
550 mmHg
41%
2
m/s
E
Climate normal
+13
+7
18 October, Friday. day, 12°; night, 3°; partly cloudy
19
+13
+3
19 October, sat
+13
+3
Feels like
+4
550 mmHg
37%
2.3
m/s
SE
Climate normal
+12
+6
19 October, Saturday. day, 13°; night, 3°; partly cloudy
Average for 30 days
14
sunny days
6
days with precipitation
10
cloudy days
14 sunny days; 6 days with precipitation; 10 cloudy days;
48
%
air humidity
3.4
m/s
Wind
W
28
mm of precipitation
(6% of annual average)
air humidity 48%; 28 millimeters of precipitation (6% of annual average); Wind westerly 3.4 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
E
SE
NW
W
SE
W
SE
W
W
W
SW
SW
E
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
