Climate and monthly weather forecastMammoth Lakes, CA
Climate and monthly weather forecast
The climate of Mammoth Lakes
The climatic characteristics of Mammoth Lakes are defined by the Köppen climate classification as Csb - Mediterranean, warm summer. Located in California, USA, it is dominated by somewhat variable weather conditions throughout the year.Temperature patterns from month to month show diverse fluctuations. High temperatures range from 34.2°F (1.2°C) in the coldest month to a warm 73.4°F (23°C) in the hottest month, while low temperatures oscillate between 15.4°F (-9.2°C) and 48.2°F (9°C). Humidity, on the other hand, shows a downward trend from January through June, only to increase again towards the year-end, peaking at 76% in February.
Although a pattern can be observed in precipitation levels too, Mammoth Lakes does not experience significant rain, with December being the month receiving the maximum amount of 0.63" (16mm). As far as snowfall is concerned, it is non-existent from June to August with February receiving the most - 5.67" (144mm).
Daylight hours fluctuate naturally following the course of the year, starting at 9.9 hours in January and reaching a peak at 14.7 hours in June. Sunshine also sees considerable variation, from a low of 6.4 hours in January and December to a high of 12 hours from May through August. Finally, wind speeds range from 4.9mph (7.9km/h) in the calmer months of July and August to 6.9mph (11.1km/h) in March.
The best time to visit Mammoth Lakes
Considering a blend of pleasant weather and favorable climate conditions, the months from May to September seem to offer the most desirable conditions for a visit to Mammoth Lakes. This period sees maximum daylight hours, starting from 14.2 hours in May and remaining above 12 hours till September. In addition to longest sunshine duration, rainfall is at its least with only 0.08" (2mm) in both August and October. With warm high temperatures between 52.9°F (11.6°C) to 73.4°F (23°C) and moderate wind speeds, these months provide promising conditions for outdoor activities.The worst time to visit Mammoth Lakes
The period from December to March might be viewed as less favorable for a visit owing to the lower temperatures and higher precipitation. With high temperatures ranging only from 34.2°F (1.2°C) to 37.6°F (3.1°C) and low temperatures dropping to below freezing, it can be quite chilly. Also, more snowfall can be expected during this period, reaching its peak in February with nearly 5.67" (144mm). These conditions, while might be desirable for winter sports enthusiasts, can pose difficulties for general outdoor exploration.Spring weather in Mammoth Lakes
Spring in Mammoth Lakes, starting from March till May, sees a transition from colder to warmer weather. High temperatures begin at 37.6°F (3.1°C) in March and rise to 52.9°F (11.6°C) by May. Correspondingly, low temperatures increase from 18.7°F (-7.4°C) to 32°F (0°C). Rain and snow both decrease during this period, making way for rising sunshine hours and longer days.Summer weather in Mammoth Lakes
Summer, from June to August, brings the warmest and longest days to Mammoth Lakes. High temperatures climb from 65.3°F (18.5°C) to 73.4°F (23°C), and low temperatures also increase from 41.9°F (5.5°C) to 48.2°F (9°C). Rainfall is at its minimum, and there is practically no snow. The period of daylight averages more than 14 hours, providing ample opportunities for outdoor activities.Autumn weather in Mammoth Lakes
Autumn, comprising September through November, sees a gradual decrease in temperature and daylight hours in Mammoth Lakes. High temperatures drop from 65.8°F (18.8°C) in September to 44.4°F (6.9°C) by November while the low temperature decreases from 41.5°F (5.3°C) to 23°F (-5°C). Rainfall increases slightly but it is the start of the snowfall season with November seeing 3.23" (82mm) of snow.Winter weather in Mammoth Lakes
Winter in Mammoth Lakes, which lasts from December through February, is characterized by cold temperatures and higher precipitation. High temperatures hover between 34°F (1.1°C) and 37.6°F (3.1°C), while lows can plunge between 15.4°F (-9.2°C) and 18.7°F (-7.4°C). The highest snowfall of the year occurs in these months, particularly in February with an average of 5.67" (144mm). With shorter days and fewer sunshine hours, winter presents a stark contrast to the warm and bustling summer months.Weather in January
January sees the emergence of weather in Mammoth Lakes, California that is both cold and wet, setting the stage for the rest of winter. High temperatures average at around 35.6°F (2°C), dipping to a chilly 16.5°F (-8.6°C) at night. Weather in January »Weather in February
As the month of February takes hold in Mammoth Lakes, temperatures continue to remain low, although they are slightly higher in comparison to January. The maximum snowfall occurs during this month with an average of 5.67" (144mm), adding to the winter wonderland vibe. Weather in February »Weather in March
The signs of spring surface in March, with Mammoth Lakes basking in more sunshine as temperatures begin to creep upwards. The snowfall decreases to 5.2" (132mm), indicating a transition from winter to spring. The charm of the city intensifies, surrounded by melting snow and budding flowers. Weather in March »Weather in April
Compared to March, weather fluctuates in April with a combination of increasing temperatures and declining precipitation. April witnesses an average high temperature of 44.6°F (7°C) and is the month with the 4th lowest amount of snowfall at 3.39" (86mm). Weather in April »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. Weather in May »Weather in June
June signals the start of the summer season in Mammoth Lakes as temperatures rise and daylight hours stretch out. With average high temperatures breaking past the 60-degree mark to reach 65.3°F (18.5°C), it is evident that summer has arrived. Weather in June »Weather in July
July is the warmest month in Mammoth Lakes, California, with an average high of 73.4°F (23°C), signalling the peak of summer. The city takes on an idyllic summer appearance, with daylight stretching out for around 14.5 hours on average. Weather in July »Weather in August
August continues to bask in the warmth of the summer in Mammoth Lakes, with only a marginal reduction in average high temperature to 72.1°F (22.3°C). The lakes and hiking trails remain popular attractions as summer activities persist throughout the month. Weather in August »Weather in September
September brings a downward shift in temperatures, suggesting the onset of the Fall season in Mammoth Lakes. The average high temperature decreases to a comfortable 65.8°F (18.8°C) marking a progression towards cooler months. Weather in September »Weather in October
The weather in Mammoth Lakes cools down in October, providing real fall vibes with average high temperatures down to 55.2°F (12.9°C). October is considered autumn's peak, presenting a picturesque vista adorned with fall colors. Weather in October »Weather in November
November in Mammoth Lakes is a month of transition as the weather continues its descent towards winter conditions. The city witnesses a drastic reduction in temperature with the average high falling to a chilly 44.4°F (6.9°C). Weather in November »Weather in December
The year wraps up with December in Mammoth Lakes, California, showcasing the characteristic cold weather of winter. With an average high temperature of 34.2°F (1.2°C), December boasts freezing temperatures and intense snowfall. Weather in December »Updated: Jul 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 47.7 rainfall days, and 4.92" (125mm) of precipitation is accumulated.
Months with snowfall are January through June, September through December.
Throughout the year, there are 60.8 snowfall days, and 28.58" (726mm) of snow is accumulated.
The month with the least sunshine in Mammoth Lakes is January, with an average of 6.3h of sunshine.
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
In Mammoth Lakes, the average lowest temperatures are observed in February, with a high of 34°F (1.1°C) and a low of 14.9°F (-9.5°C).
With an average relative humidity of 76%, February is the most humid month.
February is the month with the most rainfall. Rain falls for 4.3 days and accumulates 0.94" (24mm) of precipitation.
The month with the most snowfall is February, when snow falls for 9.3 days and typically aggregates up to 5.67" (144mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mammoth Lakes, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
With an average of 14h and 42min of daylight, June has the longest days of the year.
June and July, with an average maximum UV index of 5, are months with the highest UV index.
With average high temperatures of 73.4°F (23°C) and lows of 48.2°F (9°C), July is the warmest month.
In Mammoth Lakes, snow does not fall in July and August.
The months with the most sunshine are July and August, with an average of 12h of sunshine.
August is the least humid month, with an average relative humidity of 34%.
August and October are months with the least rain when the rain falls for 1.8 days and typically aggregates up to 0.08" (2mm) of rain.
The month with the shortest days in Mammoth Lakes is December, with an average of 9h and 36min of daylight.
Average temperature
Mammoth Lakes, CA
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).
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
Mammoth Lakes, CA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.13"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
Mammoth Lakes, CA
- Average wind speed in January:
5.7mph - Average wind speed in February:
6.4mph - Average wind speed in March:
6.9mph - Average wind speed in April:
6.6mph - Average wind speed in May:
6.2mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.2mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5.9mph - Average wind speed in December:
6.1mph
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
Mammoth Lakes, CA
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (34%).
Average rainfall
Mammoth Lakes, CA
- Average rainfall in January:
0.67" - Average rainfall in February:
0.94" - Average rainfall in March:
0.75" - Average rainfall in April:
0.51" - Average rainfall in May:
0.35" - Average rainfall in June:
0.2"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.08" - Average rainfall in September:
0.12" - Average rainfall in October:
0.08" - Average rainfall in November:
0.43" - Average rainfall in December:
0.63"
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
Mammoth Lakes, CA
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
5.6 days - Average rainfall days in April:
6.3 days - Average rainfall days in May:
5.3 days - Average rainfall days in June:
3.8 days
- Average rainfall days in July:
3.9 days - Average rainfall days in August:
1.8 days - Average rainfall days in September:
1.9 days - Average rainfall days in October:
2.2 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
4.8 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
Mammoth Lakes, CA
- Average snowfall in January:
4.21" - Average snowfall in February:
5.67" - Average snowfall in March:
5.2" - Average snowfall in April:
3.39" - Average snowfall in May:
1.5" - Average snowfall in June:
0.08"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are July and August (0").
Average snowfall days
Mammoth Lakes, CA
- Average snowfall days in January:
9.1 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
11.3 days - Average snowfall days in April:
7.1 days - Average snowfall days in May:
4.7 days - Average snowfall days in June:
0.8 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.7 days - Average snowfall days in October:
2.2 days - Average snowfall days in November:
6.1 days - Average snowfall days in December:
9.5 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 / Average sunshine
Mammoth Lakes, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
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 January:
6h and 18min - Average sunshine in February:
6h and 24min - Average sunshine in March:
8h and 24min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 36min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 0min - Average sunshine in October:
8h and 6min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 24min
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
Mammoth Lakes, CA
- Average sunshine days in January:
21.7 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
19.8 days - Average sunshine days in May:
19.9 days - Average sunshine days in June:
24.3 days
- Average sunshine days in July:
24 days - Average sunshine days in August:
26.7 days - Average sunshine days in September:
25.9 days - Average sunshine days in October:
27.3 days - Average sunshine days in November:
23.4 days - Average sunshine days in December:
21.3 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
Mammoth Lakes, CA
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
Mammoth Lakes, CA
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
Mammoth Lakes, CA
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).
