May weather forecast
Lyons, CO

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Weather in May

May, the last month of the spring in Lyons, is a comfortable month, with an average temperature fluctuating between 37.9°F (3.3°C) and 61.5°F (16.4°C).

Temperature

The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a cool 52.3°F (11.3°C) in April to a comfortable 61.5°F (16.4°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 37.9°F (3.3°C) is recorded during May.

Humidity

In Lyons, Colorado, the average relative humidity in May is 58%.

Rainfall

The month with the most rainfall is May, when the rain falls for 18.3 days and typically aggregates up to 2.72" (69mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.9 snowfall days, in May, Lyons aggregates 2.09" (53mm) of snow. Throughout the year, there are 53.5 snowfall days, and 42.36" (1076mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:24 pm MDT.

Sunshine

In May, the average sunshine is 10.7h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 4 in May transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Frequently asked questions

What are May temperatures?

The high-temperature, in May, in Lyons, is 61.5°F (16.4°C), while the low-temperature averages to 37.9°F (3.3°C).

What is the average humidity in May?

In May, the average relative humidity is 58%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 18.3 days and accumulates 2.72" (69mm) of precipitation.

How many days does it rain in May?

In Lyons, during May, the rain falls for 18.3 days and regularly aggregates up to 2.72" (69mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 1.9 snowfall days, in May, Lyons aggregates 2.09" (53mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 26min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:24 pm MDT.

How long on average sun shines in May?

The average sunshine duration in May is 10.7h.

How high is the UV index in May?

In Lyons, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Lyons, CO

Average temperature in May - Lyons, CO
  • Average high temperature in May: 61.5°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (35.4°F).

  • Average low temperature in May: 37.9°F

The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is December (17.6°F).

Average pressure in May
Lyons, CO

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

Average wind speed in May
Lyons, CO

Average wind speed in May - Lyons, CO
  • Average wind speed in May: 5.8mph

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in May
Lyons, CO

Average humidity in May - Lyons, CO
  • Average humidity in May: 58%

The month with the highest relative humidity is February (71%).
The months with the lowest relative humidity are June, August and September (46%).

Average rainfall in May
Lyons, CO

Average rainfall in May - Lyons, CO
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in May
Lyons, CO

Average rainfall days in May - Lyons, CO
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.6 days).

Average snowfall in May
Lyons, CO

Average snowfall in May - Lyons, CO
  • Average snowfall in May: 2.09"

The month with the highest snowfall is April (8.39").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Lyons, CO

Average snowfall days in May - Lyons, CO
  • Average snowfall days in May: 1.9 days

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Lyons, 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: 10h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in May
Lyons, CO

Average sunshine days in May - Lyons, CO
  • Average sunshine days in May: 8.9 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (7.3 days).

Average UV index in May
Lyons, CO

Average UV index in May - Lyons, CO
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in May
Lyons, CO

Average cloud cover in May - Lyons, CO
  • Average cloud cover in May: 28

The months with the most cloud cover are April and May (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 17).

Average visibility in May
Lyons, CO

Average visibility in May - Lyons, 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).

Lyons, Colorado, USA

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