Weather in Keystone: May
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Average day temperature: | 62.3°F |
| Average night temperature: | 46.9°F | |
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Number of sunny days: | 13 days |
| Day length: | 14.2 - 15.2 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.2 in. | |
| more information | ||
14 days
forecast
forecast
| Keystone |
weather in
June
June
| Keystone |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 78°F. At the same time the lowest night temperature was 21°F. Daily and nightly averages during May were 62.0°F and 44.1°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Keystone in May is 1.2 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 8.4 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.7.
Best time for vacation in Keystone
Keystone on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Keystone
Local time: 13:21
June 08, monday
1500
72°F
N
13 mph
13 mph
1800
70°F
NW
11 mph
11 mph
2100
57°F
W
2 mph
2 mph
June 09, tuesday
0000
54°F
NE
5 mph
5 mph
0300
55°F
NE
9 mph
9 mph
0600
59°F
NE
7 mph
7 mph
0900
75°F
NE
12 mph
12 mph
1200
82°F
NE
17 mph
17 mph
