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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
September
+28
+12
19 September, thu
+28
+12
Feels like
+19
629 mmHg
28%
4.5
m/s
E
Climate normal
+19
+11
19 September, Thursday. day, 28°; night, 12°; clear
20
+29
+14
20 September, fri
+29
+14
Feels like
+21
627 mmHg
34%
4.5
m/s
E
Climate normal
+18
+12
20 September, Friday. day, 29°; night, 14°; mostly clear
21
+20
+9
21 September, sat
+20
+9
Feels like
+11
629 mmHg
60%
6.3
m/s
NE
Climate normal
+17
+11
21 September, Saturday. day, 20°; night, 9°; rain
22
+13
+9
22 September, sun
+13
+9
Feels like
+7
627 mmHg
80%
4.7
m/s
N
Climate normal
+16
+9
22 September, Sunday. day, 13°; night, 9°; heavy rain
23
+22
+12
23 September, mon
+22
+12
Feels like
+11
623 mmHg
48%
7.2
m/s
W
Climate normal
+17
+11
23 September, Monday. day, 22°; night, 12°; thunderstorm with rain
24
+19
+11
24 September, tue
+19
+11
Feels like
+11
630 mmHg
60%
4.4
m/s
NW
Climate normal
+17
+11
24 September, Tuesday. day, 19°; night, 11°; rain
25
+22
+11
25 September, wed
+22
+11
Feels like
+12
632 mmHg
47%
5
m/s
W
Climate normal
+18
+12
25 September, Wednesday. day, 22°; night, 11°; partly cloudy
26
+25
+13
26 September, thu
+25
+13
Feels like
+14
632 mmHg
46%
5.7
m/s
W
Climate normal
+17
+11
26 September, Thursday. day, 25°; night, 13°; clear
27
+25
+12
27 September, fri
+25
+12
Feels like
+15
627 mmHg
47%
5.5
m/s
SE
Climate normal
+16
+11
27 September, Friday. day, 25°; night, 12°; mostly clear
28
+27
+12
28 September, sat
+27
+12
Feels like
+14
623 mmHg
44%
6.3
m/s
W
Climate normal
+16
+10
28 September, Saturday. day, 27°; night, 12°; mostly clear
29
+25
+13
29 September, sun
+25
+13
Feels like
+15
624 mmHg
51%
5.1
m/s
W
Climate normal
+17
+10
29 September, Sunday. day, 25°; night, 13°; mostly clear
30
+21
+10
30 September, mon
+21
+10
Feels like
+12
628 mmHg
55%
4
m/s
W
Climate normal
+16
+9
30 September, Monday. day, 21°; night, 10°; clear
1 October
+15
+5
1 October, tue
+15
+5
Feels like
+6
552 mmHg
51%
3.4
m/s
E
Climate normal
+14
+8
1 October, Tuesday. day, 15°; night, 5°; clear
2
+17
+4
2 October, wed
+17
+4
Feels like
+7
553 mmHg
48%
2.6
m/s
E
Climate normal
+14
+9
2 October, Wednesday. day, 17°; night, 4°; clear
3
+19
+5
3 October, thu
+19
+5
Feels like
+10
552 mmHg
32%
2.4
m/s
E
Climate normal
+14
+6
3 October, Thursday. day, 19°; night, 5°; clear
4
+21
+9
4 October, fri
+21
+9
Feels like
+10
552 mmHg
29%
1.7
m/s
E
Climate normal
+12
+6
4 October, Friday. day, 21°; night, 9°; clear
5
+19
+10
5 October, sat
+19
+10
Feels like
+10
551 mmHg
27%
2.1
m/s
E
Climate normal
+11
+5
5 October, Saturday. day, 19°; night, 10°; partly cloudy
6
+17
+9
6 October, sun
+17
+9
Feels like
+8
551 mmHg
34%
3.2
m/s
S
Climate normal
+12
+6
6 October, Sunday. day, 17°; night, 9°; mostly clear
7
+17
+7
7 October, mon
+17
+7
Feels like
+8
550 mmHg
35%
2.6
m/s
SW
Climate normal
+11
+5
7 October, Monday. day, 17°; night, 7°; clear
8
+16
+6
8 October, tue
+16
+6
Feels like
+7
549 mmHg
31%
3.3
m/s
W
Climate normal
+10
+4
8 October, Tuesday. day, 16°; night, 6°; clear
9
+14
+5
9 October, wed
+14
+5
Feels like
+5
551 mmHg
32%
2.8
m/s
E
Climate normal
+10
+5
9 October, Wednesday. day, 14°; night, 5°; clear
10
+16
+6
10 October, thu
+16
+6
Feels like
+6
549 mmHg
43%
2.8
m/s
NW
Climate normal
+12
+7
10 October, Thursday. day, 16°; night, 6°; clear
11
+17
+5
11 October, fri
+17
+5
Feels like
+5
547 mmHg
25%
2.9
m/s
W
Climate normal
+10
+4
11 October, Friday. day, 17°; night, 5°; clear
12
+14
+5
12 October, sat
+14
+5
Feels like
+3
541 mmHg
27%
5.3
m/s
SW
Climate normal
+10
+4
12 October, Saturday. day, 14°; night, 5°; mostly clear
13
+2
−4
13 October, sun
+2
−4
Feels like
−4
543 mmHg
55%
4.5
m/s
NW
Climate normal
+11
+6
13 October, Sunday. day, 2°; night, -4°; sleet
14
+7
−1
14 October, mon
+7
−1
Feels like
−4
548 mmHg
23%
5.3
m/s
NW
Climate normal
+12
+6
14 October, Monday. day, 7°; night, -1°; clear
15
+11
+2
15 October, tue
+11
+2
Feels like
0
547 mmHg
27%
4.9
m/s
W
Climate normal
+13
+7
15 October, Tuesday. day, 11°; night, 2°; clear
16
+14
+3
16 October, wed
+14
+3
Feels like
+2
547 mmHg
33%
2.5
m/s
W
Climate normal
+13
+6
16 October, Wednesday. day, 14°; night, 3°; clear
17
+13
+3
17 October, thu
+13
+3
Feels like
+2
547 mmHg
31%
3.1
m/s
W
Climate normal
+11
+6
17 October, Thursday. day, 13°; night, 3°; clear
18
+10
+2
18 October, fri
+10
+2
Feels like
−1
538 mmHg
29%
5
m/s
SW
Climate normal
+13
+7
18 October, Friday. day, 10°; night, 2°; partly cloudy
Average data for 10 years
Next, the average data for 10 years
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
22
sunny days
5
days with precipitation
3
cloudy days
22 sunny days; 5 days with precipitation; 3 cloudy days;
40
%
air humidity
4.1
m/s
Wind
W
45
mm of precipitation
(9% of annual average)
air humidity 40%; 45 millimeters of precipitation (9% of annual average); Wind westerly 4.1 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
E
E
NE
N
W
NW
W
W
SE
W
W
W
E
E
E
E
E
S
SW
W
E
NW
W
SW
NW
NW
W
W
W
SW
19
Average data for 10 years
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
17
18
Daytime temperature
Night-time temperature
