May weather forecast
Iliff, CO

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Weather in May

May, the last month of the spring in Iliff, is a pleasant month, with an average temperature varying between 47.8°F (8.8°C) and 68.9°F (20.5°C).

Temperature

The start of May is characterized by an increase in the average high-temperature, transitioning from a moderate 59.7°F (15.4°C) in April to an agreeable 68.9°F (20.5°C). Throughout May, Iliff witnesses a consistent average low-temperature of 47.8°F (8.8°C).

Humidity

The average relative humidity in May is 57%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 2.95" (75mm) of precipitation.

Snowfall

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

Daylight

In May, the average length of the day in Iliff is 14h and 28min.
On the first day of the month, sunrise is at 5:49 am and sunset at 7:49 pm. On the last day of May, sunrise is at 5:23 am and sunset at 8:17 pm MDT.

Sunshine

In Iliff, the average sunshine in May is 10.5h.

UV index

In May, the average daily maximum UV index in Iliff, Colorado, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly 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 usual temperature for Iliff in May?

An average high-temperature, in May, in Iliff, is 68.9°F (20.5°C) and the average low-temperature is 47.8°F (8.8°C).

What is the average humidity in May in Iliff?

In May, the average relative humidity is 57%.

What is the rainiest month in Iliff?

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

How much does it rain in Iliff in May?

In Iliff, during May, the rain falls for 17.3 days and regularly aggregates up to 2.95" (75mm) of precipitation.

What is the last month it snows in Iliff?

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

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

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

What time are sunrise and sunset in May in Iliff?

In May, on the first day of the month, sunrise is at 5:49 am and sunset at 7:49 pm. On the last day of the month, in Iliff, sunrise is at 5:23 am and sunset at 8:17 pm MDT.

How long on average sun shines in May in Iliff?

The average sunshine duration in May in Iliff, Colorado, is 10.5h.

How high is the UV index in May in Iliff?

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

Average temperature in May - Iliff, 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
Iliff, CO

Average pressure in May - Iliff, 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
Iliff, CO

Average wind speed in May - Iliff, 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
Iliff, CO

Average humidity in May - Iliff, 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
Iliff, CO

Average rainfall in May - Iliff, 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
Iliff, CO

Average rainfall days in May - Iliff, 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
Iliff, CO

Average snowfall in May - Iliff, 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
Iliff, CO

Average snowfall days in May - Iliff, 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
Iliff, CO

Average daylight in May / Average sunshine in May - Iliff, 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
Iliff, CO

Average sunshine days in May - Iliff, 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
Iliff, CO

Average UV index in May - Iliff, 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
Iliff, CO

Average cloud cover in May - Iliff, 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
Iliff, CO

Average visibility in May - Iliff, 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).

Iliff, Colorado, USA

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