Monthly weather forecast and climate
Yosemite National Park, CA

Part of Merced River in the valley below the Yosemite National Park Mountains in California, USA, with clear blue skies
Part of Merced River in the valley below the Yosemite National Park Mountains in California, USA, with clear blue skies
Yosemite National Park experiences a Mediterranean type of climate (Köppen climate classification Csa) with hot and dry summers and mildly cold and wet winters.
It lies in the Sierra Nevada of Central California with Sierra National Forest at its southeast and Stanislaus National Forest to its northwest. Yosemite is a land of giant sequoia trees, lakes, mountains, meadows, glaciers, waterfalls, granite cliffs amid extensive biological diversity. The park has five vegetation zones: woodland, lower forest, upper forest, subalpine, and alpine.

Summers are long, hot and lack significant rainfall as the average high-temperature shoots to 90°F (32.2°C) in the peak of July. Winters are mildly cold, with an average low temperature of 25°F (-3.9°C) at the peak of January.
The climate varies with elevation in Yosemite with a drop in temperatures, an increase in rain, and snowfall at higher altitudes. Rainfall mainly occurs during the winter months as the annual precipitation averages 36" (914.4mm). Higher elevations experience rain up to 50" (1270mm) annually at a level of 2600 meters above sea level.
Snowfall is abundant to the tune of 65" (1651mm) during the period between November to March. Spring and autumn fare better regarding the weather compared to the summer and winter.
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May and September are the best months to visit Yosemite National Park when the weather is pleasant, and the crowds have not swelled up. Summer is the peak season with heavy road traffic, less availability of campsites, and premium rates for everything.
It does not rain much during late spring and early fall, and a majority of the trails are fully accessible as the snow melts on the ground in these periods.
Late May is the best time to view waterfalls roaring with freshly melted snow, while September weather is excellent for hiking along the trails.

The period from November to March is a time to avoid Yosemite National Park as the winter months are cold, and the ground logs heavy snow.
The majority of the rainfall occurs during the winter, which is a dampener for moving on the trails. Rain and snow shut down many paths and roads as a large section of the park close during the cold season. Low temperatures do not support the cause either, as lower accommodation rates and snow activities such as skiing and snowshoeing are the major attractions of winter.

Yosemite is prone to forest fires in the long and dry summer. Forest fires damage natural woodlands, though it clears off the dead vegetation and spurs new growth.
The Rim Fire in 2013 destroyed nearly 500 acres off natural habitat as the park closed for the tourists. Another massive fire, the Ferguson Fire, closed a big section on the western boundary of the park in August 2018, which was the most significant closing in thirty years.

January is as cold as it gets in Yosemite, with the average low temperature around a freezing 25°F (-3.9°C). With 6.5" (165.1mm) of rain, January is the wettest month of the year. Weather in January »

February sees the winter temperatures rise a little to average in the range of a cold 28°F (-2.2°C) to a warm 53°F (11.7°C). The sun shines intermittently for an average of 6 hours a day. Weather in February »

March is a cold month in Yosemite with average temperatures in the range of a frigid 31°F (-0.6°C) to a mild 58°F (14.4°C). Rain is persistent with 5.3" (134.6mm) over the space of 10 rainy days. Weather in March »

April brings much-needed warmth with the drop in the rain to 3" (76.2mm) and a gradual rise in the temperatures. Spring sees average temperatures in the steady range of 37°F (2.8°C) to 63°F (17.2°C). Weather in April »

Many sunny days, average temperatures in the range of a comfortable 42°F (5.6°C) to 73°F (22.8°C) range and the scarce crowd makes May one of the best times to be in Yosemite. Weather in May »

June starts the summer and the tourist season in Yosemite with sunny weather. The rain and snow disappear from the ground as the average temperatures rise in the warm range of 48°F (8.9°C) to 82°F (27.8°C). Weather in June »

Average temperatures range from 54°F (12.2°C) at night to a hot 90°F (32.2°C) during the day. It is common for the mercury to cross 100°F (37.8°C) on many days with a few days even blazing at 110°F (43.3°C). Weather in July »

August is a hot summer month with average high temperatures of 89°F (31.7°C) and the average low temperatures of 52°F (11.1°C). Yosemite summers are dry with long days (up to 15 hours of daylight). Weather in August »

September is one of the best times to visit Yosemite with mild temperatures, cloudless skies, and an absence of moisture and rain. Temperatures mostly range from 47°F (8.3°C) to 83°F (28.3°C). Weather in September »

October lies in the cool autumn season when the average temperatures drop to the moderate range of 38°F (3.3°C) to 74°F (23.3°C). There are many sunny days with the lack of significant cloud cover and humidity. Weather in October »

November is a transitional month from fall to winter that sees the first arrival of snow. Fall season gathers snow up to 3.6" (91.4mm) as the temperatures plummet to a freezing 30°F (-1.1°C) at night. Weather in November »

December is a cold winter month with the average temperatures in the range of a freezing 28°F (-2.2°C) to a mild 48°F (8.9°C). The sun rarely gets a chance to break the cloud cover. Weather in December »

What is the coldest month in Yosemite National Park?

The coldest month is January, with an average high-temperature of 47.1°F (8.4°C) and an average low-temperature of 25.5°F (-3.6°C).

How many days does it rain in Yosemite National Park?

In Yosemite National Park, during the entire year, the rain falls for 65 days and collects up to 36.3" (921mm) of precipitation.

What is the wettest month in Yosemite National Park?

The month with the most rainfall in Yosemite National Park, California, is January when the rain falls for 9 days and typically aggregates up to 6.5" (165.4mm) of precipitation.

When does it snow in Yosemite National Park?

Months with snowfall in Yosemite National Park, California, are January through May, October through December.

How much does it snow in Yosemite National Park?

Throughout the year, in Yosemite National Park, 65.3" (1658.6mm) of snow is accumulated.

When does it snow the most in Yosemite National Park?

January is the month with the most snowfall, with 16.2" (411.5mm) of accumulated snow.

What is the warmest month in Yosemite National Park?

With an average high-temperature of 90°F (32.2°C) and an average low-temperature of 53.2°F (11.8°C), July is the warmest month.

What is the driest month in Yosemite National Park?

August is the month with the least rainfall. Rain falls for 1 days and accumulates 0.2" (5.1mm) of precipitation.
Average temperature - Yosemite National Park, CA
Average rainfall - Yosemite National Park, CA

The wettest month (with the highest rainfall) is January (165.4mm).
The driest month (with the lowest rainfall) is August (5.1mm).

Average rainfall days - Yosemite National Park, CA
Average snowfall - Yosemite National Park, CA

The month with the highest snowfall is January (411.5mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average daylight / Average sunshine - Yosemite National Park, CA