May weather forecast
Big Bear Lake, CA

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Big Bear Lake, California, with close rocks amid trees, and mountains in the distance
Big Bear Lake, California, with close rocks amid trees, and mountains in the distance

Weather in May

May brings a more definitive end to the cold weather at Big Bear Lake, with temperatures on the rise. In this month, landscapes transform dramatically as the greenery thrives and wildlife becomes more active. The city records a stark drop in snowfall to just 1.02" (26mm), marking a distinct end to the snowy period. The relative humidity level drops, leading to clear skies and an increased sunlit duration, ideal for outdoor activities.

Temperature

A gentle upsurge in temperatures occurs as April gives way to May, with average highs shifting from an enjoyable 66.6°F (19.2°C) to a pleasant 73°F (22.8°C). Compared to daytime temperatures, Big Bear Lake's temperature drops significantly, averaging a fresh 51.1°F (10.6°C) during the nights of May.

Humidity

In Big Bear Lake, the average relative humidity in May is 42%.

Rainfall

In Big Bear Lake, in May, during 3.3 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, in Big Bear Lake, there are 41.6 rainfall days, and 7.8" (198mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 1 snowfall days, in May, Big Bear Lake aggregates 1.02" (26mm) of snow. In Big Bear Lake, during the entire year, snow falls for 16.1 days and aggregates up to 31.22" (793mm) of snow.

Daylight

The average length of the day in May is 13h and 58min.
On the first day of the month, sunrise is at 5:57 am and sunset at 7:32 pm. On the last day of May, sunrise is at 5:36 am and sunset at 7:54 pm PDT.

Sunshine

In May, the average sunshine is 11.9h.

UV index

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

The high-temperature during May is 73°F (22.8°C) and the low-temperature is 51.1°F (10.6°C).

What is the average humidity in May?

The average relative humidity in May is 42%.

How much does it rain in May?

In May, the rain falls for 3.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 1 snowfall days, in May, Big Bear Lake aggregates 1.02" (26mm) of snow.

How many hours of daylight does Big Bear Lake have in May?

In May, the average day length is 13h and 58min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:57 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:54 pm PDT.

How long on average sun shines in May?

The average sunshine duration in May is 11.9h.

What is the UV index reading in May?

In Big Bear Lake, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health 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
Big Bear Lake, CA

Average temperature in May - Big Bear Lake, CA
  • Average high temperature in May: 73°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (52.5°F).

  • Average low temperature in May: 51.1°F

The month with the highest average low temperature is August (66.9°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

Average pressure in May
Big Bear Lake, CA

Average pressure in May - Big Bear Lake, CA
  • Average pressure in May: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in May
Big Bear Lake, CA

Average wind speed in May - Big Bear Lake, CA
  • Average wind speed in May: 7.8mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).

Average humidity in May
Big Bear Lake, CA

Average humidity in May - Big Bear Lake, CA
  • Average humidity in May: 42%

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (29%).

Average rainfall in May
Big Bear Lake, CA

Average rainfall in May - Big Bear Lake, CA
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is December (1.26").
The driest month (with the least rainfall) is June (0.12").

Average rainfall days in May
Big Bear Lake, CA

Average rainfall days in May - Big Bear Lake, CA
  • Average rainfall days in May: 3.3 days

The month with the highest number of rainy days is July (5 days).
The month with the least rainy days is June (1.4 days).

Average snowfall in May
Big Bear Lake, CA

Average snowfall in May - Big Bear Lake, CA
  • Average snowfall in May: 1.02"

The month with the highest snowfall is December (6.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Big Bear Lake, CA

Average snowfall days in May - Big Bear Lake, CA
  • Average snowfall days in May: 1 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Big Bear Lake, CA

Average daylight in May / Average sunshine in May - Big Bear Lake, CA
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 11h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in May
Big Bear Lake, CA

Average sunshine days in May - Big Bear Lake, CA
  • Average sunshine days in May: 25.8 days

The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (22.2 days).

Average UV index in May
Big Bear Lake, CA

Average UV index in May - Big Bear Lake, CA
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in May
Big Bear Lake, CA

Average cloud cover in May - Big Bear Lake, CA
  • Average cloud cover in May: 10

The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June, August and September (Cloud cover 6).

Average visibility in May
Big Bear Lake, CA

Average visibility in May - Big Bear Lake, CA
  • 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).

Big Bear Lake, California, USA

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