Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May comes with a subtle rise, with the average high-temperature adjusting from a refreshing 60.8°F (16°C) in April to an agreeable 69.1°F (20.6°C). Johnstown, amid May nights, sees a noteworthy disparity from daily highs with an average temperature of 45.1°F (7.3°C).Humidity
In May, the average relative humidity is 52%.Rainfall
May is the month with the most rainfall. Rain falls for 14.3 days and accumulates 2.13" (54mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Johnstown, Colorado. During 1.5 snowfall days, in May, Johnstown aggregates 1.85" (47mm) of snow. Throughout the year, there are 41 snowfall days, and 25.51" (648mm) of snow is accumulated.Daylight
In May, the average length of the day in Johnstown is 14h and 26min.On the first day of May in Johnstown, Colorado, sunrise is at 5:57 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:23 pm MDT.
Sunshine
In May, the average sunshine in Johnstown, Colorado, is 11.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 in May translates into these instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Johnstown in May?
What is the average humidity in May in Johnstown?
What is the rainiest month in Johnstown?
How many days does it rain in May in Johnstown?
What is the last month it snows in Johnstown?
How many hours of daylight does Johnstown have in May?
When are sunrise and sunset in May in Johnstown?
How many hours of sunshine does Johnstown have in May?
What is the UV index intensity in May in Johnstown?
Average temperature in May
Johnstown, CO
- Average high temperature in May: 69.1°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in May
Johnstown, CO
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Johnstown, CO
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in May
Johnstown, CO
- Average humidity in May: 52%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in May
Johnstown, CO
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in May
Johnstown, CO
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (3.7 days).
Average snowfall in May
Johnstown, CO
- Average snowfall in May: 1.85"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Johnstown, CO
- Average snowfall days in May: 1.5 days
The month with the highest number of snowfall days is February (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Johnstown, CO
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 11h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in May
Johnstown, CO
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in May
Johnstown, CO
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Johnstown, CO
- Average cloud cover in May: 26
The month with the most cloud cover is April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in May
Johnstown, CO
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Johnstown, Colorado, USA
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