May weather forecast
Otto, WY

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Weather in May

The last month of the spring, May, is a refreshing month in Otto, Wyoming, with an average temperature varying between 47.1°F (8.4°C) and 64.6°F (18.1°C).

Temperature

May witnesses an increase in the average high-temperature, moving from a cool 54.1°F (12.3°C) in April to an enjoyable 64.6°F (18.1°C). Throughout May, Otto anticipates an average low-temperature of 47.1°F (8.4°C).

Humidity

In May, the average relative humidity in Otto is 44%.

Rainfall

May is the month with the most rainfall. Rain falls for 12.6 days and accumulates 0.87" (22mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Otto. May is the last month it regularly snows in Otto. During 0.4 snowfall days, in May, Otto aggregates 0.28" (7mm) of snow. In Otto, during the entire year, snow falls for 41.4 days and aggregates up to 9.41" (239mm) of snow.

Daylight

The average length of the day in May in Otto, Wyoming, is 14h and 49min.
On the first day of May in Otto, Wyoming, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:50 pm MDT.

Sunshine

In May, the average sunshine in Otto is 11.4h.

UV index

The average daily maximum UV index in May in Otto, Wyoming, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: During May, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Otto in May?

The high-temperature, in May, in Otto, is 64.6°F (18.1°C), while the low-temperature averages to 47.1°F (8.4°C).

What is the average humidity in May in Otto?

The average relative humidity in May in Otto, Wyoming, is 44%.

What is the rainiest month in Otto?

May is the month with the most rainfall. Rain falls for 12.6 days and accumulates 0.87" (22mm) of precipitation.

How much does it rain in Otto in May?

In Otto, during May, the rain falls for 12.6 days and regularly aggregates up to 0.87" (22mm) of precipitation.

What is the last month it snows in Otto?

May is the last month it regularly snows in Otto. During 0.4 snowfall days, in May, Otto aggregates 0.28" (7mm) of snow.

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

The average day length in May is 14h and 49min.

When are sunrise and sunset in May in Otto?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, in Otto, Wyoming, sunrise is at 5:31 am and sunset at 8:50 pm MDT.

How long on average sun shines in May in Otto?

In Otto, Wyoming, the average sunshine duration in May is 11.4h.

What is the UV index intensity in May in Otto?

In May, the average daily maximum UV index in Otto, Wyoming, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Otto, WY

Average temperature in May - Otto, WY
  • Average high temperature in May: 64.6°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in May: 47.1°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in May
Otto, WY

Average pressure in May - Otto, WY
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in May
Otto, WY

Average wind speed in May - Otto, WY
  • Average wind speed in May: 7.8mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).

Average humidity in May
Otto, WY

Average humidity in May - Otto, WY
  • Average humidity in May: 44%

The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).

Average rainfall in May
Otto, WY

Average rainfall in May - Otto, WY
  • Average rainfall in May: 0.87"

The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").

Average rainfall days in May
Otto, WY

Average rainfall days in May - Otto, WY
  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in May
Otto, WY

Average snowfall in May - Otto, WY
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Otto, WY

Average snowfall days in May - Otto, WY
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Otto, 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: 11h and 2min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).

Average sunshine days in May
Otto, WY

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

The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).

Average UV index in May
Otto, WY

Average UV index in May - Otto, WY
  • 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, March, November and December (UV index 2).

Average cloud cover in May
Otto, WY

Average cloud cover in May - Otto, WY
  • Average cloud cover in May: 22

The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in May
Otto, WY

Average visibility in May - Otto, 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).

Otto, Wyoming, USA

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