May weather forecast
Hayden, CO

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Weather in May

May, the last month of the spring in Hayden, is a refreshing month, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 35.8°F (2.1°C).

Temperature

In Hayden, the average high-temperature in May rises, from a frosty 46.6°F (8.1°C) in April, to a mild 58.5°F (14.7°C). Despite drastic daily temperature oscillations, Hayden cools down to an average low-temperature of 35.8°F (2.1°C) in May.

Humidity

The average relative humidity in May in Hayden is 59%.

Rainfall

In Hayden, in May, it is raining for 12.3 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 96.4 rainfall days, and 13.11" (333mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Hayden, in May, during 2 snowfall days, 1.06" (27mm) of snow is typically accumulated. In Hayden, during the entire year, snow falls for 87.1 days and aggregates up to 60.47" (1536mm) of snow.

Daylight

In May, the average length of the day is 14h and 27min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:33 pm MDT.

Sunshine

In May, the average sunshine is 11.1h.

UV index

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 4 in May translates into this advice:
Act with care - The suggestion to avoid sunburn is emphasized. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

May temperatures vary between a high-temperature of 58.5°F (14.7°C) and a low-temperature of 35.8°F (2.1°C).

What is the average humidity in May?

The average relative humidity in May is 59%.

How many days does it rain in May?

In May, the rain falls for 12.3 days. Throughout May, 1.1" (28mm) of precipitation is accumulated.

How many days does it snow in May?

In Hayden, in May, during 2 snowfall days, 1.06" (27mm) of snow is typically accumulated.

How many hours of daylight does Hayden have in May?

In May, the average day length is 14h and 27min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:06 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:33 pm MDT.

How long on average sun shines in May?

In Hayden, the average sunshine duration in May is 11.1h.

What is the UV index intensity in May?

In Hayden, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from 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
Hayden, CO

Average temperature in May - Hayden, CO
  • Average high temperature in May: 58.5°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in May: 35.8°F

The month with the highest average low temperature is July (49.6°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in May
Hayden, CO

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

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is May (29.92"Hg).

Average wind speed in May
Hayden, CO

Average wind speed in May - Hayden, CO
  • Average wind speed in May: 6.9mph

The windiest months (with the highest average wind speed) are April and June (7.1mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

Average humidity in May
Hayden, CO

Average humidity in May - Hayden, CO
  • Average humidity in May: 59%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (45%).

Average rainfall in May
Hayden, CO

Average rainfall in May - Hayden, CO
  • Average rainfall in May: 1.1"

The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is August (0.55").

Average rainfall days in May
Hayden, CO

Average rainfall days in May - Hayden, CO
  • Average rainfall days in May: 12.3 days

The months with the highest number of rainy days are April and May (12.3 days).
The month with the least rainy days is November (5 days).

Average snowfall in May
Hayden, CO

Average snowfall in May - Hayden, CO
  • Average snowfall in May: 1.06"

The month with the highest snowfall is January (11.34").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Hayden, CO

Average snowfall days in May - Hayden, CO
  • Average snowfall days in May: 2 days

The month with the highest number of snowfall days is February (16.7 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in May / Average sunshine in May - Hayden, CO
  • Average daylight in May: 14h and 3min

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 18min).

  • Average sunshine in May: 11h and 1min

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: 5h and 24min).

Average sunshine days in May
Hayden, CO

Average sunshine days in May - Hayden, CO
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is June (19.6 days).
The month with the least sunshine days is April (10.2 days).

Average UV index in May
Hayden, CO

Average UV index in May - Hayden, 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, March, April, October, November and December (UV index 2).

Average cloud cover in May
Hayden, CO

Average cloud cover in May - Hayden, CO
  • Average cloud cover in May: 23

The month with the most cloud cover is February (Cloud cover 44).
The months with the least cloud cover are June, August and September (Cloud cover 13).

Average visibility in May
Hayden, CO

Average visibility in May - Hayden, CO
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Hayden, Colorado, USA

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