May weather forecastMammoth Lakes, CA

May
Weather in May
May is characterized by its milder temperatures and drier conditions in Mammoth Lakes, moving away from the frigid winter months and wetness from the spring showers. The average high temperature reaches 52.9°F (11.6°C), which is still relatively cool. The month is marked by an increased level of outdoor activities due to the more pleasant weather. Residents shed their winter layers, embracing the warmth of the sun. Overall, May is an ideal month for residents and visitors to enjoy the city’s outdoor scenery and environment.Temperature
In Mammoth Lakes, the onset of May comes with a modest high-temperature shift, transitioning from April's frosty 44.6°F (7°C) to a fresh 52.9°F (11.6°C). Mammoth Lakes's May nights cool down to an average low-temperature of 32°F (0°C).Humidity
In May, the average relative humidity is 57%.Rainfall
In Mammoth Lakes, in May, it is raining for 5.3 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 47.7 rainfall days, and 4.92" (125mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Mammoth Lakes, during May, snow falls for 4.7 days and regularly aggregates up to 1.5" (38mm) of snow. In Mammoth Lakes, during the entire year, snow falls for 60.8 days and aggregates up to 28.58" (726mm) of snow.Daylight
The average length of the day in May is 14h and 13min.On the first day of May, sunrise is at 5:59 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:11 pm PDT.
Sunshine
In May, the average sunshine is 11.6h.UV index
In May, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: During May, 3 as the daily maximum UV index converts into the following advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mammoth Lakes, CA
- Average high temperature in May: 52.9°F
The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is February (34°F).
- Average low temperature in May: 32°F
The month with the highest average low temperature is July (48.2°F).
The coldest month (with the lowest average low temperature) is February (14.9°F).
Average pressure in May
Mammoth Lakes, CA
- 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 (29.89"Hg).
Average wind speed in May
Mammoth Lakes, CA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in May
Mammoth Lakes, CA
- Average humidity in May: 57%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (34%).
Average rainfall in May
Mammoth Lakes, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is February (0.94").
The driest months (with the least rainfall) are August and October (0.08").
Average rainfall days in May
Mammoth Lakes, CA
- Average rainfall days in May: 5.3 days
The month with the highest number of rainy days is April (6.3 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in May
Mammoth Lakes, CA
- Average snowfall in May: 1.5"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Mammoth Lakes, CA
- Average snowfall days in May: 4.7 days
The month with the highest number of snowfall days is March (11.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Mammoth Lakes, CA
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 11h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in May
Mammoth Lakes, CA
- Average sunshine days in May: 19.9 days
The month with the most sunshine days is October (27.3 days).
The month with the least sunshine days is March (18.2 days).
Average UV index in May
Mammoth Lakes, CA
- Average UV index in May: 3
The months with the highest UV index are June and July (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
Mammoth Lakes, CA
- Average cloud cover in May: 18
The month with the most cloud cover is March (Cloud cover 30).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Mammoth Lakes, 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).





