May weather forecast
Robertson, WY

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Weather in May

May, the last month of the spring in Robertson, is a moderate month, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 37.8°F (3.2°C).

Temperature

With the onset of May, Robertson's weather sees a temperature rise, transitioning from a frosty 45.9°F (7.7°C) in April to a mild 57°F (13.9°C). May nights cool down to an average low-temperature of 37.8°F (3.2°C).

Humidity

In May, the average relative humidity is 53%.

Rainfall

The month with the most rainfall in Robertson is May, when the rain falls for 16.1 days and typically aggregates up to 2.01" (51mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In Robertson, in May, during 4 snowfall days, 2.01" (51mm) of snow is typically accumulated. In Robertson, Wyoming, during the entire year, snow falls for 85.7 days and aggregates up to 41.18" (1046mm) of snow.

Daylight

The average length of the day in May is 14h and 31min.
On the first day of May, sunrise is at 6:18 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:47 pm MDT.

Sunshine

In May, the average sunshine is 11h.

UV index

In May, the average daily maximum UV index in Robertson, Wyoming, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The average high-temperature and low-temperature during May are 57°F (13.9°C) and 37.8°F (3.2°C) respectively.

What is the average humidity in May?

In Robertson, Wyoming, the average relative humidity in May is 53%.

What is the wettest month?

The month with the most rainfall is May, when the rain falls for 16.1 days and typically aggregates up to 2.01" (51mm) of precipitation.

How much does it rain in May?

In Robertson, during May, the rain falls for 16.1 days and regularly aggregates up to 2.01" (51mm) of precipitation.

How many days does it snow in May in Robertson?

In May, it is snowing for 4 days. Throughout May, 2.01" (51mm) of snow is accumulated.

How many hours of daylight does Robertson have in May?

The average day length in May in Robertson is 14h and 31min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:18 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:47 pm MDT.

How many hours of sunshine does Robertson have in May?

In May, the average sunshine duration is 11h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from 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
Robertson, WY

Average temperature in May - Robertson, WY
  • Average high temperature in May: 57°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (26.6°F).

  • Average low temperature in May: 37.8°F

The month with the highest average low temperature is July (55.6°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in May
Robertson, WY

Average pressure in May - Robertson, WY
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in May
Robertson, WY

Average wind speed in May - Robertson, WY
  • Average wind speed in May: 9.2mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in May
Robertson, WY

Average humidity in May - Robertson, WY
  • Average humidity in May: 53%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are July and August (36%).

Average rainfall in May
Robertson, WY

Average rainfall in May - Robertson, WY
  • Average rainfall in May: 2.01"

The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are January and July (0.63").

Average rainfall days in May
Robertson, WY

Average rainfall days in May - Robertson, WY
  • Average rainfall days in May: 16.1 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is November (6 days).

Average snowfall in May
Robertson, WY

Average snowfall in May - Robertson, WY
  • Average snowfall in May: 2.01"

The month with the highest snowfall is March (8.78").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Robertson, WY

Average snowfall days in May - Robertson, WY
  • Average snowfall days in May: 4 days

The month with the highest number of snowfall days is March (15.1 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in May / Average sunshine in May - Robertson, WY
  • Average daylight in May: 14h and 3min

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

  • Average sunshine in May: 11h and 0min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in May
Robertson, WY

Average sunshine days in May - Robertson, WY
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is April (9.4 days).

Average UV index in May
Robertson, WY

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

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in May
Robertson, WY

Average cloud cover in May - Robertson, WY
  • Average cloud cover in May: 24

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in May
Robertson, WY

Average visibility in May - Robertson, WY
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

Robertson, Wyoming, USA

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