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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
September
+27
+12
17 September, tue
+27
+12
Feels like
+16
621 mmHg
41%
7.8
m/s
W
Climate normal
+18
+11
17 September, Tuesday. day, 27°; night, 12°; light rain
18
+27
+13
18 September, wed
+27
+13
Feels like
+18
623 mmHg
24%
5.4
m/s
W
Climate normal
+19
+12
18 September, Wednesday. day, 27°; night, 13°; clear
19
+28
+12
19 September, thu
+28
+12
Feels like
+19
629 mmHg
25%
4.9
m/s
W
Climate normal
+19
+11
19 September, Thursday. day, 28°; night, 12°; clear
20
+28
+15
20 September, fri
+28
+15
Feels like
+19
626 mmHg
33%
5.6
m/s
E
Climate normal
+18
+12
20 September, Friday. day, 28°; night, 15°; mostly clear
21
+20
+10
21 September, sat
+20
+10
Feels like
+13
625 mmHg
60%
5.9
m/s
N
Climate normal
+17
+11
21 September, Saturday. day, 20°; night, 10°; thunderstorm with rain
22
+17
+8
22 September, sun
+17
+8
Feels like
+10
626 mmHg
61%
3.4
m/s
E
Climate normal
+16
+9
22 September, Sunday. day, 17°; night, 8°; rain
23
+24
+12
23 September, mon
+24
+12
Feels like
+12
626 mmHg
36%
5.4
m/s
W
Climate normal
+17
+11
23 September, Monday. day, 24°; night, 12°; light rain
24
+20
+9
24 September, tue
+20
+9
Feels like
+12
628 mmHg
54%
4.2
m/s
W
Climate normal
+17
+11
24 September, Tuesday. day, 20°; night, 9°; mostly clear
25
+25
+12
25 September, wed
+25
+12
Feels like
+13
625 mmHg
46%
6
m/s
SW
Climate normal
+18
+12
25 September, Wednesday. day, 25°; night, 12°; mostly clear
26
+26
+9
26 September, thu
+26
+9
Feels like
+12
624 mmHg
44%
8.5
m/s
W
Climate normal
+17
+11
26 September, Thursday. day, 26°; night, 9°; rain
27
+20
+8
27 September, fri
+20
+8
Feels like
+9
625 mmHg
56%
5.3
m/s
W
Climate normal
+16
+11
27 September, Friday. day, 20°; night, 8°; mostly clear
28
+26
+13
28 September, sat
+26
+13
Feels like
+14
627 mmHg
42%
5.8
m/s
W
Climate normal
+16
+10
28 September, Saturday. day, 26°; night, 13°; clear
29
+30
+8
29 September, sun
+30
+8
Feels like
+14
625 mmHg
34%
9.4
m/s
W
Climate normal
+17
+10
29 September, Sunday. day, 30°; night, 8°; clear
30
+21
+6
30 September, mon
+21
+6
Feels like
+12
551 mmHg
52%
2.6
m/s
NE
Climate normal
+16
+9
30 September, Monday. day, 21°; night, 6°; clear
1 October
+21
+5
1 October, tue
+21
+5
Feels like
+12
551 mmHg
51%
3.1
m/s
E
Climate normal
+14
+8
1 October, Tuesday. day, 21°; night, 5°; clear
2
+19
+6
2 October, wed
+19
+6
Feels like
+11
549 mmHg
42%
2.2
m/s
E
Climate normal
+14
+9
2 October, Wednesday. day, 19°; night, 6°; clear
3
+16
+9
3 October, thu
+16
+9
Feels like
+8
548 mmHg
44%
2
m/s
E
Climate normal
+14
+6
3 October, Thursday. day, 16°; night, 9°; clear
4
+17
+8
4 October, fri
+17
+8
Feels like
+9
545 mmHg
39%
2.5
m/s
W
Climate normal
+12
+6
4 October, Friday. day, 17°; night, 8°; mostly clear
5
+10
+6
5 October, sat
+10
+6
Feels like
+4
544 mmHg
55%
5
m/s
SW
Climate normal
+11
+5
5 October, Saturday. day, 10°; night, 6°; rain
6
+15
+5
6 October, sun
+15
+5
Feels like
+7
548 mmHg
52%
3.4
m/s
NW
Climate normal
+12
+6
6 October, Sunday. day, 15°; night, 5°; mostly clear
7
+13
+5
7 October, mon
+13
+5
Feels like
+5
549 mmHg
35%
3.3
m/s
NW
Climate normal
+11
+5
7 October, Monday. day, 13°; night, 5°; clear
8
+14
+4
8 October, tue
+14
+4
Feels like
+5
548 mmHg
38%
4.2
m/s
NW
Climate normal
+10
+4
8 October, Tuesday. day, 14°; night, 4°; mostly clear
9
+14
+5
9 October, wed
+14
+5
Feels like
+7
546 mmHg
75%
2.7
m/s
E
Climate normal
+10
+5
9 October, Wednesday. day, 14°; night, 5°; partly cloudy
10
+14
+5
10 October, thu
+14
+5
Feels like
+8
545 mmHg
60%
1.1
m/s
S
Climate normal
+12
+7
10 October, Thursday. day, 14°; night, 5°; mostly clear
11
+13
+5
11 October, fri
+13
+5
Feels like
+5
548 mmHg
45%
3
m/s
NW
Climate normal
+10
+4
11 October, Friday. day, 13°; night, 5°; clear
12
+13
+5
12 October, sat
+13
+5
Feels like
+4
550 mmHg
38%
3.6
m/s
NW
Climate normal
+10
+4
12 October, Saturday. day, 13°; night, 5°; clear
13
+15
+5
13 October, sun
+15
+5
Feels like
+4
550 mmHg
38%
3.1
m/s
NE
Climate normal
+11
+6
13 October, Sunday. day, 15°; night, 5°; clear
14
+15
+7
14 October, mon
+15
+7
Feels like
+6
548 mmHg
33%
4.1
m/s
W
Climate normal
+12
+6
14 October, Monday. day, 15°; night, 7°; clear
15
+15
+6
15 October, tue
+15
+6
Feels like
+7
548 mmHg
33%
3.5
m/s
NW
Climate normal
+13
+7
15 October, Tuesday. day, 15°; night, 6°; clear
16
+15
+7
16 October, wed
+15
+7
Feels like
+6
548 mmHg
36%
2.4
m/s
E
Climate normal
+13
+6
16 October, Wednesday. day, 15°; night, 7°; clear
Average data for 10 years
Next, the average data for 10 years
17
+11
+6
17 October, thu
+11
+6
Feels like
+6
647 mmHg
41%
5.4
m/s
W
17 October, Thursday. day, 11°; night, 6°; partly cloudy
18
+13
+7
18 October, fri
+13
+7
Feels like
+8
646 mmHg
34%
5.5
m/s
SW
18 October, Friday. day, 13°; night, 7°; clear
19
+12
+6
19 October, sat
+12
+6
Feels like
+8
646 mmHg
40%
5.1
m/s
SW
19 October, Saturday. day, 12°; night, 6°; partly cloudy
Average for 30 days
23
sunny days
6
days with precipitation
1
cloudy day
23 sunny days; 6 days with precipitation; 1 cloudy day;
44
%
air humidity
4.3
m/s
Wind
W
26
mm of precipitation
(5% of annual average)
air humidity 44%; 26 millimeters of precipitation (5% of annual average); Wind westerly 4.3 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
W
W
W
E
N
E
W
W
SW
W
W
W
W
NE
E
E
E
W
SW
NW
NW
NW
E
S
NW
NW
NE
W
NW
E
17
Average data for 10 years
18
19
20
21
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
Daytime temperature
Night-time temperature
