10 day forecast
Monthly forecast
Weather map
City or area
Find
Sign up
Log in
Go to comparison
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
22
+16
+9
22 September, sun
+16
+9
Feels like
+11
647 mmHg
46%
5.8
m/s
E
22 September, Sunday. day, 16°; night, 9°; clear
23
September
+26
+10
23 September, mon
+26
+10
Feels like
+17
628 mmHg
34%
4.4
m/s
W
Climate normal
+17
+11
23 September, Monday. day, 26°; night, 10°; partly cloudy
24
+24
+10
24 September, tue
+24
+10
Feels like
+17
631 mmHg
41%
3.5
m/s
E
Climate normal
+17
+11
24 September, Tuesday. day, 24°; night, 10°; partly cloudy
25
+29
+13
25 September, wed
+29
+13
Feels like
+21
632 mmHg
40%
3.2
m/s
E
Climate normal
+18
+12
25 September, Wednesday. day, 29°; night, 13°; clear
26
+31
+18
26 September, thu
+31
+18
Feels like
+19
630 mmHg
37%
5.1
m/s
W
Climate normal
+17
+11
26 September, Thursday. day, 31°; night, 18°; mostly clear
27
+28
+14
27 September, fri
+28
+14
Feels like
+19
628 mmHg
36%
4.3
m/s
W
Climate normal
+16
+11
27 September, Friday. day, 28°; night, 14°; partly cloudy
28
+29
+15
28 September, sat
+29
+15
Feels like
+18
628 mmHg
37%
4.2
m/s
E
Climate normal
+16
+10
28 September, Saturday. day, 29°; night, 15°; mostly clear
29
+27
+15
29 September, sun
+27
+15
Feels like
+17
629 mmHg
42%
5.1
m/s
W
Climate normal
+17
+10
29 September, Sunday. day, 27°; night, 15°; mostly clear
30
+24
+10
30 September, mon
+24
+10
Feels like
+15
631 mmHg
50%
4.5
m/s
W
Climate normal
+16
+9
30 September, Monday. day, 24°; night, 10°; partly cloudy
1 October
+22
+11
1 October, tue
+22
+11
Feels like
+11
633 mmHg
51%
5.2
m/s
SE
Climate normal
+14
+8
1 October, Tuesday. day, 22°; night, 11°; light rain
2
+26
+12
2 October, wed
+26
+12
Feels like
+14
628 mmHg
40%
6.1
m/s
W
Climate normal
+14
+9
2 October, Wednesday. day, 26°; night, 12°; clear
3
+22
+11
3 October, thu
+22
+11
Feels like
+12
631 mmHg
56%
4.7
m/s
W
Climate normal
+14
+6
3 October, Thursday. day, 22°; night, 11°; mostly clear
4
+23
+12
4 October, fri
+23
+12
Feels like
+14
632 mmHg
56%
3.9
m/s
W
Climate normal
+12
+6
4 October, Friday. day, 23°; night, 12°; mostly clear
5
+18
+8
5 October, sat
+18
+8
Feels like
+11
592 mmHg
50%
3
m/s
SW
Climate normal
+11
+5
5 October, Saturday. day, 18°; night, 8°; clear
6
+17
+8
6 October, sun
+17
+8
Feels like
+9
547 mmHg
49%
3.8
m/s
SW
Climate normal
+12
+6
6 October, Sunday. day, 17°; night, 8°; mostly clear
7
+15
+10
7 October, mon
+15
+10
Feels like
+6
541 mmHg
50%
5.9
m/s
SW
Climate normal
+11
+5
7 October, Monday. day, 15°; night, 10°; clear
8
+10
+3
8 October, tue
+10
+3
Feels like
+2
540 mmHg
53%
5
m/s
SW
Climate normal
+10
+4
8 October, Tuesday. day, 10°; night, 3°; light rain
9
+4
−3
9 October, wed
+4
−3
Feels like
−1
546 mmHg
82%
1.8
m/s
NW
Climate normal
+10
+5
9 October, Wednesday. day, 4°; night, -3°; sleet
10
+8
−2
10 October, thu
+8
−2
Feels like
−1
547 mmHg
57%
3.3
m/s
NW
Climate normal
+12
+7
10 October, Thursday. day, 8°; night, -2°; clear
11
+11
+2
11 October, fri
+11
+2
Feels like
+1
546 mmHg
51%
3.2
m/s
S
Climate normal
+10
+4
11 October, Friday. day, 11°; night, 2°; clear
12
+11
+1
12 October, sat
+11
+1
Feels like
+1
542 mmHg
37%
4.4
m/s
SW
Climate normal
+10
+4
12 October, Saturday. day, 11°; night, 1°; clear
13
+8
+3
13 October, sun
+8
+3
Feels like
−1
540 mmHg
55%
4.2
m/s
S
Climate normal
+11
+6
13 October, Sunday. day, 8°; night, 3°; light rain
14
+3
+1
14 October, mon
+3
+1
Feels like
−3
542 mmHg
96%
6.2
m/s
N
Climate normal
+12
+6
14 October, Monday. day, 3°; night, 1°; rain
15
+9
+1
15 October, tue
+9
+1
Feels like
+1
545 mmHg
80%
3.7
m/s
W
Climate normal
+13
+7
15 October, Tuesday. day, 9°; night, 1°; mostly clear
16
+9
0
16 October, wed
+9
0
Feels like
0
543 mmHg
59%
3.7
m/s
W
Climate normal
+13
+6
16 October, Wednesday. day, 9°; night, 0°; partly cloudy
17
+7
−2
17 October, thu
+7
−2
Feels like
−2
544 mmHg
48%
3.4
m/s
W
Climate normal
+11
+6
17 October, Thursday. day, 7°; night, -2°; clear
18
+8
−3
18 October, fri
+8
−3
Feels like
−2
549 mmHg
39%
3.4
m/s
NW
Climate normal
+13
+7
18 October, Friday. day, 8°; night, -3°; clear
19
+10
+1
19 October, sat
+10
+1
Feels like
0
552 mmHg
39%
2
m/s
S
Climate normal
+12
+6
19 October, Saturday. day, 10°; night, 1°; mostly clear
20
+10
−1
20 October, sun
+10
−1
Feels like
0
552 mmHg
47%
2.8
m/s
NW
Climate normal
+9
+5
20 October, Sunday. day, 10°; night, -1°; partly cloudy
21
+10
+1
21 October, mon
+10
+1
Feels like
0
551 mmHg
40%
2.5
m/s
W
Climate normal
+10
+5
21 October, Monday. day, 10°; night, 1°; clear
22
+11
+1
22 October, tue
+11
+1
Feels like
0
549 mmHg
35%
4.5
m/s
W
Climate normal
+10
+5
22 October, Tuesday. day, 11°; night, 1°; clear
Average data for 10 years
Next, the average data for 10 years
23
+12
+6
23 October, wed
+12
+6
Feels like
+7
647 mmHg
36%
5.5
m/s
W
23 October, Wednesday. day, 12°; night, 6°; partly cloudy
24
+12
+3
24 October, thu
+12
+3
Feels like
+7
646 mmHg
37%
5.5
m/s
W
24 October, Thursday. day, 12°; night, 3°; partly cloudy
25
+7
+2
25 October, fri
+7
+2
Feels like
+1
647 mmHg
52%
6.3
m/s
W
25 October, Friday. day, 7°; night, 2°; clear
26
+6
0
26 October, sat
+6
0
Feels like
+1
648 mmHg
47%
5.5
m/s
SW
26 October, Saturday. day, 6°; night, 0°; clear
Average for 30 days
19
sunny days
5
days with precipitation
6
cloudy days
19 sunny days; 5 days with precipitation; 6 cloudy days;
50
%
air humidity
4
m/s
Wind
W
9
mm of precipitation
(2% of annual average)
air humidity 50%; 9 millimeters of precipitation (2% of annual average); Wind westerly 4 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
W
E
E
W
W
E
W
W
SE
W
W
W
SW
SW
SW
SW
NW
NW
S
SW
S
N
W
W
W
NW
S
NW
W
W
23
Average data for 10 years
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
21
22
Daytime temperature
Night-time temperature
