May weather forecast
Cortez, CO

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The bright and red rays of the setting sun over the scenic layout of hills and plains of Cortez, Colorado
The bright and red rays of the setting sun over the scenic layout of hills and plains of Cortez, Colorado

Weather in May

In May, the weather in Cortez greatly welcomes the warm embrace of spring. The average high temperature begins to approach summer heat, reaching a satisfying 68.5°F (20.3°C), but the lows still retain a touch of spring's mild coolness at 44.6°F (7°C). As such, May serves as an opportune time for outdoor enthusiasts to revel in nature-based activities. Residents and visitors can comfortably enjoy the great outdoors without the harsh extremes of winter cold or summer heat.

Temperature

May's arrival brings a temperature shift, moving from a refreshing 58.8°F (14.9°C) in April to a pleasant 68.5°F (20.3°C). During the nights in May, Cortez records a pronounced shift from the daytime warmth, with a consistent average temperature of 44.6°F (7°C).

Humidity

In Cortez, the average relative humidity in May is 34%.

Rainfall

In Cortez, during May, the rain falls for 5.3 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 78.9 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Snowfall

In Cortez, snow does not fall in May through September.

Daylight

The average length of the day in May is 14h and 11min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:04 pm. On the last day of May, sunrise is at 5:55 am and sunset at 8:29 pm MDT.

Sunshine

In May, the average sunshine is 11.5h.

UV index

In Cortez, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

The high-temperature during May is 68.5°F (20.3°C) and the low-temperature is 44.6°F (7°C).

What is the average humidity in May?

In May, the average relative humidity is 34%.

How many days does it rain in May?

In Cortez, during May, the rain falls for 5.3 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow?

In Cortez, snow does not fall in May through September.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May?

The average day length in May is 14h and 11min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:18 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:29 pm MDT.

How long on average sun shines in May?

The average sunshine duration in May is 11.5h.

What is the UV index reading in May?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Cortez, CO

Average temperature in May - Cortez, CO
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in May: 44.6°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in May
Cortez, CO

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

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in May
Cortez, CO

Average wind speed in May - Cortez, CO
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).

Average humidity in May
Cortez, CO

Average humidity in May - Cortez, CO
  • Average humidity in May: 34%

The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is June (26%).

Average rainfall in May
Cortez, CO

Average rainfall in May - Cortez, CO
  • Average rainfall in May: 0.51"

The wettest months (with the highest rainfall) are January and December (1.26").
The driest month (with the least rainfall) is June (0.2").

Average rainfall days in May
Cortez, CO

Average rainfall days in May - Cortez, CO
  • Average rainfall days in May: 5.3 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is June (2.8 days).

Average snowfall in May
Cortez, CO

Average snowfall in May - Cortez, CO
  • Average snowfall in May: 0"

The month with the highest snowfall is January (8.11").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Cortez, CO

Average snowfall days in May - Cortez, CO
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and December (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Cortez, CO
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 11h and 3min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 30min).

Average sunshine days in May
Cortez, CO

Average sunshine days in May - Cortez, CO
  • Average sunshine days in May: 24.8 days

The month with the most sunshine days is June (26.2 days).
The month with the least sunshine days is February (17.6 days).

Average UV index in May
Cortez, CO

Average UV index in May - Cortez, 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
Cortez, CO

Average cloud cover in May - Cortez, CO
  • Average cloud cover in May: 15

The months with the most cloud cover are January and December (Cloud cover 27).
The month with the least cloud cover is June (Cloud cover 9).

Average visibility in May
Cortez, CO

Average visibility in May - Cortez, 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).

Cortez, Colorado, USA

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