May weather forecast
Sterling, CO

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Weather in May

Relatively moderate weather characterises May in Sterling. The pathways towards summer begin to unveil as temperatures become warmer, establishing an amicable difference when compared to the preceding months. The month also stands out with maximum rainfall, estimated at 2.95" (75mm) spread across 17.3 days, the peak through the year. Greater daylight hours amplify the radiance of Sterling, paving way for summer's golden touch in the coming days.

Temperature

As May arrives, a rise in the average high-temperature is observed, moving from a refreshing 59.7°F (15.4°C) in April to an agreeable 68.9°F (20.5°C). The low-temperature average for Sterling during May stands at a chilly 47.8°F (8.8°C).

Humidity

The average relative humidity in May is 57%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 2.95" (75mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1.1 snowfall days, in May, Sterling aggregates 0.28" (7mm) of snow. Throughout the year, there are 34.4 snowfall days, and 12.13" (308mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 28min.
On the first day of May, sunrise is at 5:50 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:17 pm MDT.

Sunshine

In May, the average sunshine is 10.5h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The high-temperature, in May, in Sterling, records 68.9°F (20.5°C), while the low-temperature is 47.8°F (8.8°C).

What is the average humidity in May?

The average relative humidity in May is 57%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 2.95" (75mm) of precipitation.

How much does it rain in May?

In Sterling, in May, during 17.3 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 1.1 snowfall days, in May, Sterling aggregates 0.28" (7mm) of snow.

What is the average length of the day in May?

In May, the average day length is 14h and 28min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:50 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:17 pm MDT.

How many hours of sunshine does Sterling have in May?

In May, the average sunshine duration in Sterling is 10.5h.

What is the UV index reading in May?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Sterling, CO

Average temperature in May - Sterling, CO
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (37.8°F).

  • Average low temperature in May: 47.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (23°F).

Average pressure in May
Sterling, CO

Average pressure in May - Sterling, CO
  • Average pressure in May: 29.88"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in May
Sterling, CO

Average wind speed in May - Sterling, CO
  • Average wind speed in May: 10.6mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).

Average humidity in May
Sterling, CO

Average humidity in May - Sterling, CO
  • Average humidity in May: 57%

The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is September (47%).

Average rainfall in May
Sterling, CO

Average rainfall in May - Sterling, CO
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in May
Sterling, CO

Average rainfall days in May - Sterling, CO
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in May
Sterling, CO

Average snowfall in May - Sterling, CO
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Sterling, CO

Average snowfall days in May - Sterling, CO
  • Average snowfall days in May: 1.1 days

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Sterling, 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: 10h and 3min

The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).

Average sunshine days in May
Sterling, CO

Average sunshine days in May - Sterling, CO
  • Average sunshine days in May: 11 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in May
Sterling, CO

Average UV index in May - Sterling, 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
Sterling, CO

Average cloud cover in May - Sterling, CO
  • Average cloud cover in May: 30

The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in May
Sterling, CO

Average visibility in May - Sterling, 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).

Sterling, Colorado, USA

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