May weather forecast
Round Mountain, CA

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Weather in May

The last month of the spring, May, is an enjoyable month in Round Mountain, California, with an average temperature varying between 66.9°F (19.4°C) and 40.6°F (4.8°C).

Temperature

Round Mountain in May experiences an increase in the average high-temperature, moving from April's mild 57.7°F (14.3°C) to a still refreshing 66.9°F (19.4°C). The month of May sees a significant daily temperature drop, recording an average low-temperature of 40.6°F (4.8°C) in Round Mountain, California.

Humidity

In Round Mountain, California, the average relative humidity in May is 60%.

Rainfall

In Round Mountain, in May, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Round Mountain, during the entire year, the rain falls for 105 days and collects up to 24.69" (627mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Round Mountain aggregates 0.2" (5mm) of snow. In Round Mountain, during the entire year, snow falls for 36.7 days and aggregates up to 43.62" (1108mm) of snow.

Daylight

In May, the average length of the day is 14h and 29min.
On the first day of May, sunrise is at 6:04 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:32 pm PDT.

Sunshine

The average sunshine in May is 11.1h.

UV index

In Round Mountain, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 4 in May leads to these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In Round Mountain, 66.9°F (19.4°C) is the average high-temperature and 40.6°F (4.8°C) is the average low-temperature during May.

What is the average humidity in May?

The average relative humidity in May is 60%.

How many days does it rain in May?

In Round Mountain, during May, the rain falls for 11.5 days and regularly aggregates up to 2.2" (56mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.4 snowfall days, in May, Round Mountain aggregates 0.2" (5mm) of snow.

How many hours of daylight does Round Mountain have in May?

In May, the average day length is 14h and 29min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:04 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:32 pm PDT.

How many hours of sunshine does Round Mountain have in May?

In Round Mountain, the average sunshine duration in May is 11.1h.

What is the UV index intensity in May?

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Round Mountain, CA

Average temperature in May - Round Mountain, CA
  • Average high temperature in May: 66.9°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in May: 40.6°F

The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).

Average pressure in May
Round Mountain, CA

Average pressure in May - Round Mountain, CA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

Average wind speed in May
Round Mountain, CA

Average wind speed in May - Round Mountain, CA
  • Average wind speed in May: 5.4mph

The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in May
Round Mountain, CA

Average humidity in May - Round Mountain, CA
  • Average humidity in May: 60%

The months with the highest relative humidity are January and March (79%).
The months with the lowest relative humidity are July and August (40%).

Average rainfall in May
Round Mountain, CA

Average rainfall in May - Round Mountain, CA
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is March (4.45").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in May
Round Mountain, CA

Average rainfall days in May - Round Mountain, CA
  • Average rainfall days in May: 11.5 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is August (2.3 days).

Average snowfall in May
Round Mountain, CA

Average snowfall in May - Round Mountain, CA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (10.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Round Mountain, CA

Average snowfall days in May - Round Mountain, CA
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is March (8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Round Mountain, CA

Average daylight in May / Average sunshine in May - Round Mountain, CA
  • 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 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in May
Round Mountain, CA

Average sunshine days in May - Round Mountain, CA
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.3 days).

Average UV index in May
Round Mountain, CA

Average UV index in May - Round Mountain, CA
  • Average UV index in May: 4

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

Average cloud cover in May
Round Mountain, CA

Average cloud cover in May - Round Mountain, CA
  • Average cloud cover in May: 24

The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in May
Round Mountain, CA

Average visibility in May - Round Mountain, CA
  • Average visibility in May: 6mi

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

Round Mountain, California, USA

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