May weather forecast
Dayton, WY

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Weather in May

The last month of the spring, May, is a mild month in Dayton, Wyoming, with an average temperature fluctuating between 57.2°F (14°C) and 39.4°F (4.1°C).

Temperature

As May sets, the average high-temperature shows an increase, moving up from a frosty 47.1°F (8.4°C) in April to a refreshing 57.2°F (14°C). The low-temperature average for Dayton during May stands at a cold 39.4°F (4.1°C).

Humidity

In Dayton, Wyoming, the average relative humidity in May is 67%.

Rainfall

May is the month with the most rainfall in Dayton. Rain falls for 22.3 days and accumulates 3.43" (87mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Dayton. May is the last month it regularly snows. During 2 snowfall days, in May, Dayton aggregates 2.17" (55mm) of snow. Throughout the year, in Dayton, there are 78.9 snowfall days, and 46.3" (1176mm) of snow is accumulated.

Daylight

The average length of the day in May in Dayton is 14h and 52min.
On the first day of May, sunrise is at 5:57 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:47 pm MDT.

Sunshine

In May, the average sunshine is 10.5h.

UV index

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 4 suggests this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Dayton?

The high-temperature in Dayton, Wyoming, during May is 57.2°F (14°C) and the low-temperature is 39.4°F (4.1°C).

What is the average humidity in May in Dayton?

In Dayton, Wyoming, the average relative humidity in May is 67%.

What is the wettest month in Dayton?

May is the month with the most rainfall. Rain falls for 22.3 days and accumulates 3.43" (87mm) of precipitation.

How much does it rain in Dayton in May?

In Dayton, during May, the rain falls for 22.3 days and regularly aggregates up to 3.43" (87mm) of precipitation.

What is the last month it snows in Dayton?

May is the last month it regularly snows in Dayton. During 2 snowfall days, in May, Dayton aggregates 2.17" (55mm) of snow.

How many hours of daylight does Dayton have in May?

In Dayton, Wyoming, the average day length in May is 14h and 52min.

When are sunrise and sunset in May in Dayton?

On the first day of May in Dayton, sunrise is at 5:57 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:47 pm MDT.

How many hours of sunshine does Dayton have in May?

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

What is the UV index reading in May in Dayton?

In May, the average daily maximum UV index in Dayton, Wyoming, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Dayton, WY

Average temperature in May - Dayton, WY
  • Average high temperature in May: 57.2°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is February (29.1°F).

  • Average low temperature in May: 39.4°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).

Average pressure in May
Dayton, WY

Average pressure in May - Dayton, WY
  • 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 (29.85"Hg).

Average wind speed in May
Dayton, WY

Average wind speed in May - Dayton, WY
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in May
Dayton, WY

Average humidity in May - Dayton, WY
  • Average humidity in May: 67%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (46%).

Average rainfall in May
Dayton, WY

Average rainfall in May - Dayton, WY
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is December (0.75").

Average rainfall days in May
Dayton, WY

Average rainfall days in May - Dayton, WY
  • Average rainfall days in May: 22.3 days

The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in May
Dayton, WY

Average snowfall in May - Dayton, WY
  • Average snowfall in May: 2.17"

The month with the highest snowfall is April (8.7").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Dayton, WY

Average snowfall days in May - Dayton, WY
  • Average snowfall days in May: 2 days

The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Dayton, WY
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 10h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).

Average sunshine days in May
Dayton, WY

Average sunshine days in May - Dayton, WY
  • Average sunshine days in May: 5.8 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is May (5.8 days).

Average UV index in May
Dayton, WY

Average UV index in May - Dayton, WY
  • Average UV index in May: 4

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

Average cloud cover in May
Dayton, WY

Average cloud cover in May - Dayton, WY
  • Average cloud cover in May: 33

The months with the most cloud cover are February and April (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in May
Dayton, WY

Average visibility in May - Dayton, 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).

Dayton, Wyoming, USA

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