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May 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
27
+9
+1
27 April, sun
+9
+1
Feels like
+4
642 mmHg
40%
5.6
m/s
W
27 April, Sunday. day, 9°; night, 1°; rain
28
+8
+2
28 April, mon
+8
+2
Feels like
+2
643 mmHg
47%
6.1
m/s
W
28 April, Monday. day, 8°; night, 2°; rain
29
+8
+1
29 April, tue
+8
+1
Feels like
+3
643 mmHg
47%
5.5
m/s
NW
29 April, Tuesday. day, 8°; night, 1°; rain
30
+7
+1
30 April, wed
+7
+1
Feels like
+3
645 mmHg
55%
4.9
m/s
E
30 April, Wednesday. day, 7°; night, 1°; rain
1
+7
+2
1 May, thu
+7
+2
Feels like
+3
645 mmHg
56%
4
m/s
W
1 May, Thursday. day, 7°; night, 2°; overcast
2
+10
+4
2 May, fri
+10
+4
Feels like
+6
646 mmHg
50%
5.1
m/s
W
2 May, Friday. day, 10°; night, 4°; partly cloudy
3
+11
+5
3 May, sat
+11
+5
Feels like
+7
646 mmHg
50%
6
m/s
SW
3 May, Saturday. day, 11°; night, 5°; rain
4
+14
+8
4 May, sun
+14
+8
Feels like
+9
645 mmHg
43%
5.5
m/s
SW
4 May, Sunday. day, 14°; night, 8°; rain
5
+15
+8
5 May, mon
+15
+8
Feels like
+10
642 mmHg
40%
6.3
m/s
SW
5 May, Monday. day, 15°; night, 8°; overcast
6
+13
+6
6 May, tue
+13
+6
Feels like
+9
643 mmHg
46%
5.5
m/s
SE
6 May, Tuesday. day, 13°; night, 6°; rain
7
+9
+4
7 May, wed
+9
+4
Feels like
+5
644 mmHg
60%
5.6
m/s
E
7 May, Wednesday. day, 9°; night, 4°; rain
8
+10
+4
8 May, thu
+10
+4
Feels like
+6
643 mmHg
51%
5.5
m/s
SE
8 May, Thursday. day, 10°; night, 4°; clear
9
+10
+5
9 May, fri
+10
+5
Feels like
+6
643 mmHg
52%
5
m/s
SE
9 May, Friday. day, 10°; night, 5°; rain
10
+9
+3
10 May, sat
+9
+3
Feels like
+4
645 mmHg
62%
5.9
m/s
NE
10 May, Saturday. day, 9°; night, 3°; rain
11
+10
+5
11 May, sun
+10
+5
Feels like
+6
646 mmHg
56%
5.5
m/s
SW
11 May, Sunday. day, 10°; night, 5°; clear
12
+12
+5
12 May, mon
+12
+5
Feels like
+8
647 mmHg
51%
4.5
m/s
SE
12 May, Monday. day, 12°; night, 5°; clear
13
+11
+5
13 May, tue
+11
+5
Feels like
+7
647 mmHg
52%
4.8
m/s
SE
13 May, Tuesday. day, 11°; night, 5°; rain
14
+11
+6
14 May, wed
+11
+6
Feels like
+7
646 mmHg
56%
5.8
m/s
N
14 May, Wednesday. day, 11°; night, 6°; rain
15
+13
+7
15 May, thu
+13
+7
Feels like
+9
645 mmHg
50%
6
m/s
NW
15 May, Thursday. day, 13°; night, 7°; rain
16
+14
+7
16 May, fri
+14
+7
Feels like
+10
644 mmHg
47%
5
m/s
W
16 May, Friday. day, 14°; night, 7°; rain
17
+12
+6
17 May, sat
+12
+6
Feels like
+8
645 mmHg
57%
5.3
m/s
E
17 May, Saturday. day, 12°; night, 6°; rain
18
+12
+7
18 May, sun
+12
+7
Feels like
+9
643 mmHg
55%
4.5
m/s
NW
18 May, Sunday. day, 12°; night, 7°; overcast
19
+12
+6
19 May, mon
+12
+6
Feels like
+9
645 mmHg
56%
4.9
m/s
S
19 May, Monday. day, 12°; night, 6°; rain
20
+14
+8
20 May, tue
+14
+8
Feels like
+10
645 mmHg
50%
6
m/s
S
20 May, Tuesday. day, 14°; night, 8°; partly cloudy
21
+16
+9
21 May, wed
+16
+9
Feels like
+12
643 mmHg
50%
6
m/s
S
21 May, Wednesday. day, 16°; night, 9°; clear
22
+14
+7
22 May, thu
+14
+7
Feels like
+10
643 mmHg
55%
5.5
m/s
S
22 May, Thursday. day, 14°; night, 7°; rain
23
+13
+7
23 May, fri
+13
+7
Feels like
+9
641 mmHg
50%
6
m/s
SW
23 May, Friday. day, 13°; night, 7°; clear
24
+14
+7
24 May, sat
+14
+7
Feels like
+10
642 mmHg
46%
4.9
m/s
SE
24 May, Saturday. day, 14°; night, 7°; rain
25
+15
+8
25 May, sun
+15
+8
Feels like
+11
644 mmHg
41%
6.8
m/s
E
25 May, Sunday. day, 15°; night, 8°; rain
26
+16
+10
26 May, mon
+16
+10
Feels like
+12
644 mmHg
46%
5.8
m/s
S
26 May, Monday. day, 16°; night, 10°; clear
27
+15
+8
27 May, tue
+15
+8
Feels like
+11
644 mmHg
43%
5.5
m/s
S
27 May, Tuesday. day, 15°; night, 8°; clear
28
+16
+9
28 May, wed
+16
+9
Feels like
+11
644 mmHg
44%
6
m/s
W
28 May, Wednesday. day, 16°; night, 9°; rain
29
+16
+9
29 May, thu
+16
+9
Feels like
+11
645 mmHg
43%
6.4
m/s
NW
29 May, Thursday. day, 16°; night, 9°; partly cloudy
30
+18
+11
30 May, fri
+18
+11
Feels like
+14
645 mmHg
34%
5.5
m/s
W
30 May, Friday. day, 18°; night, 11°; partly cloudy
31
+17
+10
31 May, sat
+17
+10
Feels like
+14
646 mmHg
40%
4.3
m/s
S
31 May, Saturday. day, 17°; night, 10°; partly cloudy
Average data for 10 years
Boulder May
7
sunny days
16
days with precipitation
8
cloudy days
7 sunny days; 16 days with precipitation; 8 cloudy days;
50
%
air humidity
3.7
m/s
Wind
SW
87
mm of precipitation
(16% of annual average)
air humidity 50%; 87 millimeters of precipitation (16% of annual average); Wind south-westerly 3.7 Meters per second
Weather graphs for May
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
W
W
SW
SW
SW
SE
E
SE
SE
NE
SW
SE
SE
N
NW
W
E
NW
S
S
S
S
SW
SE
E
S
S
W
NW
W
S
1
Average data for 10 years
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Daytime temperature
Night-time temperature
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