May weather forecast
Parker, CO

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The scenic O'Brien Park in Parker City, Colorado

Weather in May

May brings warmer weather and a taste of the approaching summer to Parker. The appearance of greenery and blooming flowers provides an enticing backdrop. Yet, residents and travellers are advised to be prepared for the year's heaviest monthly rainfall at 2.2" (56mm). The measured UV index starts to rise, indicating brighter, sunnier days. As the days extend and temperatures rise, light clothing and sun protection become the norm for outdoor activities.

Temperature

May's onset witnesses a minor shift in the average high-temperature, moving from a mild 58.8°F (14.9°C) in April to an enjoyable 67.1°F (19.5°C). Parker, in the heat of May, registers a significant plunge to a mean of 43.2°F (6.2°C) during the nights.

Humidity

In May, the average relative humidity in Parker is 53%.

Rainfall

The month with the most rainfall is May, when the rain falls for 14.2 days and typically aggregates up to 2.2" (56mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.8 snowfall days, in May, Parker aggregates 3.7" (94mm) of snow. Throughout the year, in Parker, Colorado, there are 46.5 snowfall days, and 37.2" (945mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 22min.
On the first day of May, sunrise is at 5:58 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:20 pm MDT.

Sunshine

In Parker, the average sunshine in May is 11.2h.

UV index

The average daily maximum UV index in May in Parker is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during May leads to these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. To guard against the harmful effects of the Sun, minimize exposure during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Parker?

In May, in Parker, the average high-temperature is 67.1°F (19.5°C), and the average low-temperature is 43.2°F (6.2°C).

What is the average humidity in May in Parker?

In Parker, Colorado, the average relative humidity in May is 53%.

What is the wettest month in Parker?

The month with the most rainfall in Parker, Colorado, is May, when the rain falls for 14.2 days and typically aggregates up to 2.2" (56mm) of precipitation.

How many days does it rain in May in Parker?

In Parker, Colorado, in May, during 14.2 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

What is the last month it snows in Parker?

May is the last month it regularly snows in Parker. During 1.8 snowfall days, in May, Parker aggregates 3.7" (94mm) of snow.

How many hours of daylight does Parker have in May?

In Parker, Colorado, the average day length in May is 14h and 22min.

When are sunrise and sunset in May in Parker?

On the first day of May, sunrise is at 5:58 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:20 pm MDT.

How long on average sun shines in May in Parker?

In May, the average sunshine duration in Parker is 11.2h.

How high is the UV index in May in Parker?

In May, the average daily maximum UV index in Parker is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Parker, CO

Average temperature in May - Parker, CO
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (40.3°F).

  • Average low temperature in May: 43.2°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

Average pressure in May
Parker, CO

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

Average wind speed in May
Parker, CO

Average wind speed in May - Parker, CO
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest months (with the lowest average wind speed) are August and December (6.5mph).

Average humidity in May
Parker, CO

Average humidity in May - Parker, CO
  • Average humidity in May: 53%

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June, August and September (43%).

Average rainfall in May
Parker, CO

Average rainfall in May - Parker, CO
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is September (0.47").

Average rainfall days in May
Parker, CO

Average rainfall days in May - Parker, CO
  • Average rainfall days in May: 14.2 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is November (3.4 days).

Average snowfall in May
Parker, CO

Average snowfall in May - Parker, CO
  • Average snowfall in May: 3.7"

The month with the highest snowfall is April (6.34").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Parker, CO

Average snowfall days in May - Parker, CO
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • 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: 6h and 48min).

Average sunshine days in May
Parker, CO

Average sunshine days in May - Parker, CO
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is April (12.7 days).

Average UV index in May
Parker, CO

Average UV index in May - Parker, 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
Parker, CO

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

The month with the most cloud cover is April (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 15).

Average visibility in May
Parker, CO

Average visibility in May - Parker, 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).

Parker, Colorado, USA

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