May weather forecast
Welby, CO

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Weather in May

The last month of the spring, May, is a pleasant month in Welby, Colorado, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 69.1°F (20.6°C).

Temperature

May witnesses a minor rise in the average high-temperature, transitioning from a mild 60.3°F (15.7°C) in April to an agreeable 69.1°F (20.6°C). Despite the drastic temperature difference, Welby records an average nighttime low of 44.4°F (6.9°C) throughout May.

Humidity

The average relative humidity in May in Welby is 51%.

Rainfall

In Welby, during May, the rain falls for 6.2 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Welby, Colorado, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Welby aggregates 1.26" (32mm) of snow. Throughout the year, there are 19.6 snowfall days, and 8.5" (216mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 24min.
On the first day of May, sunrise is at 5:58 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:21 pm MDT.

Sunshine

The average sunshine in May is 11.3h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Welby, records 69.1°F (20.6°C), while the low-temperature is 44.4°F (6.9°C).

What is the average humidity in May?

The average relative humidity in May is 51%.

How much does it rain in May?

In Welby, Colorado, during May, the rain falls for 6.2 days and regularly aggregates up to 0.55" (14mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows in Welby. During 0.8 snowfall days, in May, Welby aggregates 1.26" (32mm) of snow.

What is the average length of the day in May in Welby?

In May, the average day length is 14h and 24min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:58 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:21 pm MDT.

How many hours of sunshine does Welby have in May?

In Welby, the average sunshine duration in May is 11.3h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Welby, CO

Average temperature in May - Welby, CO
  • Average high temperature in May: 69.1°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in May: 44.4°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in May
Welby, CO

Average pressure in May - Welby, CO
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

Average wind speed in May
Welby, CO

Average wind speed in May - Welby, CO
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

Average humidity in May
Welby, CO

Average humidity in May - Welby, CO
  • Average humidity in May: 51%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).

Average rainfall in May
Welby, CO

Average rainfall in May - Welby, CO
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").

Average rainfall days in May
Welby, CO

Average rainfall days in May - Welby, CO
  • Average rainfall days in May: 6.2 days

The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).

Average snowfall in May
Welby, CO

Average snowfall in May - Welby, CO
  • Average snowfall in May: 1.26"

The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Welby, CO

Average snowfall days in May - Welby, CO
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Welby, CO

Average daylight in May / Average sunshine in May - Welby, 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 2min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

Average sunshine days in May
Welby, CO

Average sunshine days in May - Welby, CO
  • Average sunshine days in May: 21.9 days

The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).

Average UV index in May
Welby, CO

Average UV index in May - Welby, 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
Welby, CO

Average cloud cover in May - Welby, CO
  • Average cloud cover in May: 25

The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).

Average visibility in May
Welby, CO

Average visibility in May - Welby, 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).

Welby, Colorado, USA

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