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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
+8
−3
27 April, sun
+8
−3
Feels like
−2
540 mmHg
68%
4
m/s
SW
27 April, Sunday. day, 8°; night, -3°; partly cloudy
28
+9
−3
28 April, mon
+9
−3
Feels like
−1
541 mmHg
65%
4
m/s
SW
28 April, Monday. day, 9°; night, -3°; rain
29
+8
−4
29 April, tue
+8
−4
Feels like
−2
540 mmHg
68%
3.9
m/s
SW
29 April, Tuesday. day, 8°; night, -4°; partly cloudy
30
+8
−3
30 April, wed
+8
−3
Feels like
−2
540 mmHg
66%
4.1
m/s
SW
30 April, Wednesday. day, 8°; night, -3°; rain
1
+8
−3
1 May, thu
+8
−3
Feels like
−2
541 mmHg
69%
3.8
m/s
SW
1 May, Thursday. day, 8°; night, -3°; rain
2
+8
−4
2 May, fri
+8
−4
Feels like
−2
541 mmHg
70%
3.7
m/s
SW
2 May, Friday. day, 8°; night, -4°; snow
3
+9
−3
3 May, sat
+9
−3
Feels like
−1
541 mmHg
68%
3.7
m/s
SW
3 May, Saturday. day, 9°; night, -3°; rain
4
+10
−2
4 May, sun
+10
−2
Feels like
0
542 mmHg
64%
3.9
m/s
SW
4 May, Sunday. day, 10°; night, -2°; clear
5
+11
−1
5 May, mon
+11
−1
Feels like
0
542 mmHg
64%
3.6
m/s
SW
5 May, Monday. day, 11°; night, -1°; clear
6
+12
−1
6 May, tue
+12
−1
Feels like
+1
541 mmHg
60%
3.9
m/s
SW
6 May, Tuesday. day, 12°; night, -1°; clear
7
+11
−1
7 May, wed
+11
−1
Feels like
0
541 mmHg
64%
4
m/s
SW
7 May, Wednesday. day, 11°; night, -1°; partly cloudy
8
+9
−1
8 May, thu
+9
−1
Feels like
0
541 mmHg
67%
4
m/s
SW
8 May, Thursday. day, 9°; night, -1°; clear
9
+10
−2
9 May, fri
+10
−2
Feels like
0
541 mmHg
68%
3.6
m/s
SW
9 May, Friday. day, 10°; night, -2°; rain
10
+10
−1
10 May, sat
+10
−1
Feels like
0
542 mmHg
68%
3.9
m/s
SW
10 May, Saturday. day, 10°; night, -1°; rain
11
+11
−2
11 May, sun
+11
−2
Feels like
0
542 mmHg
70%
3.6
m/s
SW
11 May, Sunday. day, 11°; night, -2°; rain
12
+11
−2
12 May, mon
+11
−2
Feels like
0
542 mmHg
69%
3.8
m/s
SW
12 May, Monday. day, 11°; night, -2°; clear
13
+12
−1
13 May, tue
+12
−1
Feels like
+1
543 mmHg
63%
3.8
m/s
SW
13 May, Tuesday. day, 12°; night, -1°; clear
14
+13
0
14 May, wed
+13
0
Feels like
+2
544 mmHg
65%
3.6
m/s
SW
14 May, Wednesday. day, 13°; night, 0°; rain
15
+13
0
15 May, thu
+13
0
Feels like
+3
545 mmHg
68%
3.5
m/s
SW
15 May, Thursday. day, 13°; night, 0°; rain
16
+14
0
16 May, fri
+14
0
Feels like
+3
544 mmHg
66%
3.5
m/s
SW
16 May, Friday. day, 14°; night, 0°; rain
17
+14
0
17 May, sat
+14
0
Feels like
+3
543 mmHg
65%
3.9
m/s
SW
17 May, Saturday. day, 14°; night, 0°; rain
18
+14
0
18 May, sun
+14
0
Feels like
+3
543 mmHg
66%
3.7
m/s
SW
18 May, Sunday. day, 14°; night, 0°; partly cloudy
19
+13
+1
19 May, mon
+13
+1
Feels like
+3
544 mmHg
67%
3.5
m/s
SW
19 May, Monday. day, 13°; night, 1°; rain
20
+14
0
20 May, tue
+14
0
Feels like
+3
544 mmHg
71%
3.5
m/s
SW
20 May, Tuesday. day, 14°; night, 0°; rain
21
+14
0
21 May, wed
+14
0
Feels like
+3
543 mmHg
67%
3.7
m/s
SW
21 May, Wednesday. day, 14°; night, 0°; rain
22
+14
+1
22 May, thu
+14
+1
Feels like
+3
543 mmHg
64%
3.7
m/s
SW
22 May, Thursday. day, 14°; night, 1°; partly cloudy
23
+13
0
23 May, fri
+13
0
Feels like
+3
543 mmHg
69%
4
m/s
SW
23 May, Friday. day, 13°; night, 0°; rain
24
+13
0
24 May, sat
+13
0
Feels like
+2
543 mmHg
69%
4
m/s
SW
24 May, Saturday. day, 13°; night, 0°; rain
25
+13
0
25 May, sun
+13
0
Feels like
+3
543 mmHg
68%
3.7
m/s
SW
25 May, Sunday. day, 13°; night, 0°; rain
26
+14
0
26 May, mon
+14
0
Feels like
+4
544 mmHg
69%
3.5
m/s
SW
26 May, Monday. day, 14°; night, 0°; rain
27
+15
+1
27 May, tue
+15
+1
Feels like
+5
544 mmHg
64%
3.7
m/s
SW
27 May, Tuesday. day, 15°; night, 1°; clear
28
+16
+1
28 May, wed
+16
+1
Feels like
+5
545 mmHg
65%
3.3
m/s
SW
28 May, Wednesday. day, 16°; night, 1°; rain
29
+16
+2
29 May, thu
+16
+2
Feels like
+5
545 mmHg
66%
3.5
m/s
SW
29 May, Thursday. day, 16°; night, 2°; rain
30
+14
+2
30 May, fri
+14
+2
Feels like
+5
545 mmHg
67%
3.8
m/s
SW
30 May, Friday. day, 14°; night, 2°; rain
31
+16
+2
31 May, sat
+16
+2
Feels like
+5
546 mmHg
64%
3.9
m/s
SW
31 May, Saturday. day, 16°; night, 2°; clear
Average data for 10 years
Boulder May
8
sunny days
20
days with precipitation
5
cloudy days
8 sunny days; 20 days with precipitation; 5 cloudy days;
67
%
air humidity
2.09
m/s
Wind
SW
119
mm of precipitation
(14% of annual average)
air humidity 67%; 119 millimeters of precipitation (14% of annual average); Wind south-westerly 2.09 Meters per second
Weather graphs for May
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
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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