May weather forecast
Greeley, CO

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Weather in May

The month of May in Greeley, Colorado, is characterized by the transition from spring to early summer. The mercury continues to rise, signalling the onset of warmer days. May sees the city's highest rainfall of the year, measuring at 1.61in, preparing the environment for summer. The flora turns lusher, and the fauna more active, adding vibrancy to the surroundings. However, despite the higher humidity, the weather remains comfortably warm.

Temperature

With the onset of May, Greeley experiences a subtle temperature shift, with the average high-temperature moving from a comfortable 61.2°F (16.2°C) in April to an agreeable 69.3°F (20.7°C). Greeley reports a substantial plunge from daytime highs during the nights of May, with an average low-temperature of 46°F (7.8°C).

Humidity

The average relative humidity in May is 53%.

Rainfall

May is the month with the most rainfall in Greeley. Rain falls for 10.2 days and accumulates 1.61" (41mm) of precipitation.

Snowfall

Months with snowfall in Greeley are January through May, October through December. May is the last month it regularly snows in Greeley. During 1 snowfall days, in May, Greeley aggregates 2.05" (52mm) of snow. Throughout the year, there are 26.6 snowfall days, and 13.62" (346mm) of snow is accumulated.

Daylight

In Greeley, the average length of the day in May is 14h and 27min.
On the first day of May, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:22 pm MDT.

Sunshine

The average sunshine in May in Greeley is 11h.

UV index

In Greeley, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 5 suggests this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are the temperatures in Greeley in May?

Greeley in May has an average high-temperature of 69.3°F (20.7°C) and an average low-temperature of 46°F (7.8°C).

What is the average humidity in May in Greeley?

The average relative humidity in May is 53%.

What is the rainiest month in Greeley?

May is the month with the most rainfall in Greeley. Rain falls for 10.2 days and accumulates 1.61" (41mm) of precipitation.

How much does it rain in Greeley in May?

In May, in Greeley, Colorado, the rain falls for 10.2 days. Throughout May, 1.61" (41mm) of precipitation is accumulated.

What is the last month it snows in Greeley?

May is the last month it regularly snows in Greeley, Colorado. During 1 snowfall days, in May, Greeley aggregates 2.05" (52mm) of snow.

What is the average length of the day in May in Greeley?

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

When are sunrise and sunset in May in Greeley?

In May, on the first day of the month, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, in Greeley, Colorado, sunrise is at 5:30 am and sunset at 8:22 pm MDT.

How long on average sun shines in May in Greeley?

In May, the average sunshine duration is 11h.

What is the UV index intensity in May in Greeley?

The average daily maximum UV index in May in Greeley is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Greeley, CO

Average temperature in May - Greeley, CO
  • Average high temperature in May: 69.3°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (20.1°F).

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Average pressure in May
Greeley, CO

Average pressure in May - Greeley, CO
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in May
Greeley, CO

Average wind speed in May - Greeley, CO
  • Average wind speed in May: 7.5mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).

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Average humidity in May
Greeley, CO

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

The months with the highest relative humidity are January and December (64%).
The months with the lowest relative humidity are August and September (44%).

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Average rainfall in May
Greeley, CO

Average rainfall in May - Greeley, CO
  • Average rainfall in May: 1.61"

The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in May
Greeley, CO

Average rainfall days in May - Greeley, CO
  • Average rainfall days in May: 10.2 days

The month with the highest number of rainy days is July (11.4 days).
The month with the least rainy days is November (1.6 days).

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Average snowfall in May
Greeley, CO

Average snowfall in May - Greeley, CO
  • Average snowfall in May: 2.05"

The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Greeley, CO

Average snowfall days in May - Greeley, CO
  • Average snowfall days in May: 1 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Greeley, 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 18min).

  • Average sunshine in May: 11h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).

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Average sunshine days in May
Greeley, CO

Average sunshine days in May - Greeley, CO
  • Average sunshine days in May: 18.4 days

The month with the most sunshine days is December (25.9 days).
The month with the least sunshine days is July (16.7 days).

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Average UV index in May
Greeley, CO

Average UV index in May - Greeley, 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).

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Average cloud cover in May
Greeley, CO

Average cloud cover in May - Greeley, CO
  • Average cloud cover in May: 26

The month with the most cloud cover is February (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 16).

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Average visibility in May
Greeley, CO

Average visibility in May - Greeley, 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).

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Greeley, Colorado, USA

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