May weather forecast
Fort Lyon, CO

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Weather in May

May, the last month of the spring in Fort Lyon, is a warm month, with an average temperature fluctuating between 53.6°F (12°C) and 76.5°F (24.7°C).

Temperature

The average high-temperature increases in May, moving from a comfortable 67.3°F (19.6°C) in April to a moderately hot 76.5°F (24.7°C). Fort Lyon observes a dramatic plunge from daytime highs in May, settling at an average low-temperature of 53.6°F (12°C).

Humidity

In May, the average relative humidity is 43%.

Rainfall

In May, the rain falls for 10.6 days. Throughout May, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 89.9 rainfall days, and 10.2" (259mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Fort Lyon aggregates 0.04" (1mm) of snow. In Fort Lyon, during the entire year, snow falls for 23.2 days and aggregates up to 10.28" (261mm) of snow.

Daylight

In Fort Lyon, the average length of the day in May is 14h and 15min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:43 pm. On the last day of May, sunrise is at 5:31 am and sunset at 8:09 pm MDT.

Sunshine

The average sunshine in May is 11.3h.

UV index

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 6 translates into these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

What are the temperatures in May?

The high-temperature, in May, in Fort Lyon, records 76.5°F (24.7°C), while the low-temperature is 53.6°F (12°C).

What is the average humidity in May?

The average relative humidity in May is 43%.

How much does it rain in May?

In May, the rain falls for 10.6 days. Throughout May, 1.14" (29mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Fort Lyon aggregates 0.04" (1mm) of snow.

What is the average length of the day in May?

In Fort Lyon, the average day length in May is 14h and 15min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:55 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:09 pm MDT.

How many hours of sunshine does Fort Lyon have in May?

In May, the average sunshine duration is 11.3h.

How high is the UV index in May?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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
Fort Lyon, CO

Average temperature in May - Fort Lyon, CO
  • Average high temperature in May: 76.5°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in May: 53.6°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).

Average pressure in May
Fort Lyon, CO

Average pressure in May - Fort Lyon, CO
  • Average pressure in May: 29.85"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in May
Fort Lyon, CO

Average wind speed in May - Fort Lyon, CO
  • Average wind speed in May: 11.3mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is January (8.2mph).

Average humidity in May
Fort Lyon, CO

Average humidity in May - Fort Lyon, CO
  • Average humidity in May: 43%

The month with the highest relative humidity is January (58%).
The month with the lowest relative humidity is June (38%).

Average rainfall in May
Fort Lyon, CO

Average rainfall in May - Fort Lyon, CO
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is July (1.81").
The driest months (with the least rainfall) are January, November and December (0.35").

Average rainfall days in May
Fort Lyon, CO

Average rainfall days in May - Fort Lyon, CO
  • Average rainfall days in May: 10.6 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is January (3.3 days).

Average snowfall in May
Fort Lyon, CO

Average snowfall in May - Fort Lyon, CO
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Fort Lyon, CO

Average snowfall days in May - Fort Lyon, CO
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Fort Lyon, CO

Average daylight in May / Average sunshine in May - Fort Lyon, CO
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 11h and 2min

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

Average sunshine days in May
Fort Lyon, CO

Average sunshine days in May - Fort Lyon, CO
  • Average sunshine days in May: 18.2 days

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (13.2 days).

Average UV index in May
Fort Lyon, CO

Average UV index in May - Fort Lyon, CO
  • Average UV index in May: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in May
Fort Lyon, CO

Average cloud cover in May - Fort Lyon, CO
  • Average cloud cover in May: 21

The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).

Average visibility in May
Fort Lyon, CO

Average visibility in May - Fort Lyon, 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).

Fort Lyon, Colorado, USA

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