May weather forecast
Douglas, WY

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Weather in May

Come May, Douglas witnesses a perceptible shift in weather. Witnessing an accumulation of 2.28" (58mm) in rainfall, it's the wettest month of the year. Yet, the daily weather is springlike and inviting. Long daylight hours and a high UV index urge residents and visitors alike to keep the sunscreen handy.

Temperature

With the onset of May, Douglas's weather sees a temperature rise, transitioning from a cool 52°F (11.1°C) in April to a refreshing 62.1°F (16.7°C). Douglas records an average temperature drop to a cold 42.4°F (5.8°C) in May.

Humidity

The average relative humidity in May is 58%.

Rainfall

The month with the most rainfall is May, when the rain falls for 15.2 days and typically aggregates up to 2.28" (58mm) of precipitation.

Snowfall

Months with snowfall in Douglas are January through May, September through December. May is the last month it regularly snows. During 2.3 snowfall days, in May, Douglas aggregates 3.23" (82mm) of snow. Throughout the year, in Douglas, there are 60.9 snowfall days, and 34.21" (869mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 40min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:25 am and sunset at 8:32 pm MDT.

Sunshine

The average sunshine in May is 10.6h.

UV index

In Douglas, Wyoming, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability 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:
Heed the precautions - Suggestions to avoid sunburn are made. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Douglas in May?

Douglas in May has an average high-temperature of 62.1°F (16.7°C) and an average low-temperature of 42.4°F (5.8°C).

What is the average humidity in May in Douglas?

In May, the average relative humidity in Douglas, Wyoming, is 58%.

What is the rainiest month in Douglas?

The month with the most rainfall in Douglas, Wyoming, is May, when the rain falls for 15.2 days and typically aggregates up to 2.28" (58mm) of precipitation.

How many days does it rain in May in Douglas?

In May, the rain falls for 15.2 days. Throughout May, 2.28" (58mm) of precipitation is accumulated.

What is the last month it snows in Douglas?

May is the last month it regularly snows in Douglas. During 2.3 snowfall days, in May, Douglas aggregates 3.23" (82mm) of snow.

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

In May, the average day length in Douglas, Wyoming, is 14h and 40min.

What time are sunrise and sunset in May in Douglas?

In May, on the first day of the month, sunrise is at 5:54 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:32 pm MDT.

How long on average sun shines in May in Douglas?

In May, the average sunshine duration in Douglas, Wyoming, is 10.6h.

What is the UV index reading in May in Douglas?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents 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
Douglas, WY

Average temperature in May - Douglas, WY
  • Average high temperature in May: 62.1°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (31.3°F).

  • Average low temperature in May: 42.4°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).

Average pressure in May
Douglas, WY

Average pressure in May - Douglas, WY
  • Average pressure in May: 29.89"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in May
Douglas, WY

Average wind speed in May - Douglas, WY
  • Average wind speed in May: 10.4mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

Average humidity in May
Douglas, WY

Average humidity in May - Douglas, WY
  • Average humidity in May: 58%

The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is August (40%).

Average rainfall in May
Douglas, WY

Average rainfall in May - Douglas, WY
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in May
Douglas, WY

Average rainfall days in May - Douglas, WY
  • Average rainfall days in May: 15.2 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in May
Douglas, WY

Average snowfall in May - Douglas, WY
  • Average snowfall in May: 3.23"

The month with the highest snowfall is April (5.59").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Douglas, WY

Average snowfall days in May - Douglas, WY
  • Average snowfall days in May: 2.3 days

The month with the highest number of snowfall days is February (12.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Douglas, WY

Average daylight in May / Average sunshine in May - Douglas, WY
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).

Average sunshine days in May
Douglas, WY

Average sunshine days in May - Douglas, WY
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is April (11.3 days).

Average UV index in May
Douglas, WY

Average UV index in May - Douglas, WY
  • Average UV index in May: 5

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).

Average cloud cover in May
Douglas, WY

Average cloud cover in May - Douglas, WY
  • Average cloud cover in May: 29

The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in May
Douglas, WY

Average visibility in May - Douglas, WY
  • 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).

Douglas, Wyoming, USA

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