Monthly weather forecast and climate
Mount Rushmore National Memorial, SD

A view of the Black Hills on Mount Rushmore Memorial National Park found in South Dakota, USA
A view of the Black Hills on Mount Rushmore Memorial National Park found in South Dakota, USA
Mount Rushmore National Memorial has a humid continental type of climate (Köppen climate classification Dwb) with hot, wet summers and cold, dry winters. It lies in the Black Hills of Keystone, in the American state of South Dakota. The center of attraction is the sculpture of four famous American presidents carved into the granite face of Mount Rushmore. The temperate latitude and high altitude chiefly influence the climate.

Mount Rushmore Park lies at an altitude of 1745 meters above sea level and covers an area of 2 square miles. The mountain consists of fine-grained granite with extremely high durability to withstand severe weather. The hills are semi-arid, and the vegetation includes coniferous trees such as ponderosa pine at a lower elevation. Oak, spruce, and cottonwood inhabit the region along with a wide variety of wildflowers. Flora and fauna mimic that of the Black Hills region of South Dakota.

Summers tend to be hot and humid in Mount Rushmore with a significant rainfall. High temperatures range between 70°F (21.1°C) to 95°F (35°C) from June to August. Winters are cold, with temperatures as low as 15°F (-9.4°C) during the peak of January. Fog may obscure the view of the memorial during the cold season. Spring is colder than the fall, while autumn is cooler than the summer. May and June are the wettest months.

Mount Rushmore National Memorial sees an average of 275 sunny days in the year. The annual precipitation is a moderate 22" (558.8mm) as the majority of the rainfall occurs between April and September. The abundant snowfall of 52" (1320.8mm) along with ice, sleet, and frost compensate for the relatively less rainfall. The park witnesses 23 snowy days in the year, and the snowiest period is from February to April.

The highest officially recorded temperature in Mount Rushmore National Memorial is 100°F (37.8°C), while the lowest recorded temperature is -38°F (-38.9°C).
The best time to visit Mount Rushmore National Memorial is in the fall season from September to October when the rainfall is low, and the temperatures are bearable.
May has comfortable temperatures in the spring season but is rainy for at least half of the month. Early fall records temperatures in the 37°F (2.8°C) to 68°F (20°C) zone with warm days and mild nights in September. October receives the first snowfall of the season in the second half of the month.

The worst time to visit Mount Rushmore National Memorial is during the winter months from December to February.
Nights are freezing with occasional sub-zero temperatures under the influence of Canadian arctic winds. The cold months register 15 to 20 days of snowfall that measures in the 20" (508mm) to 25" (635mm) range. Frost and fog are common and, along with the gloomy skies, makes the view of the sculpture hazy.

Mount Rushmore faces natural hazards in the form of thunderstorms, wildfires, and snowstorms. Thunderstorms with lightning are frequent from May to August, along with sudden bursts of rain. The lower elevation is susceptible to wildfires during the peak of the summer. The period from winter to early spring is prone to heavy snowfall and occasional storms that deposit large amounts of snow.

January is the driest month of the year in Mount Rushmore Park, South Dakota, with light rainfall of 0.4" (10.2mm). Weather in January »

February is cold with temperatures in the average range of 19°F (-7.2°C) to 37°F (2.8°C) at Mount Rushmore National Memorial. Weather in February »

The temperatures vary from a cold 20°F (-6.7°C) to a warm 50°F (10°C) as the averages register between 25°F (-3.9°C) to 43°F (6.1°C). Weather in March »

April is the snowiest month of the year at 10.8" (274.3mm) at Mount Rushmore, South Dakota, in the middle of the spring season. Weather in April »

May is the wettest month of the year in Mount Rushmore National Memorial, South Dakota, with 4.2" (106.7mm) of rainfall. Weather in May »

June has the longest days in Mount Rushmore National Memorial with the average temperatures in the 51°F (10.6°C) to 71°F (21.7°C) range. Weather in June »

July is the hottest month of the year at Mount Rushmore, South Dakota, as the average high temperature reaches 79°F (26.1°C). Weather in July »

The days are sunny most of the time with the average temperatures in the 58°F (14.4°C) to 78°F (25.6°C) zone. Weather in August »

September is one of the best times to visit Mount Rushmore National Memorial with the arrival of the beautiful autumn season. Weather in September »

October lies in the mild autumn season of Mount Rushmore with average temperatures are in the 37°F (2.8°C) to 55°F (12.8°C) range. Weather in October »

The average temperatures in the park are between 26°F (-3.3°C) to 43°F (6.1°C) as cold winds further exacerbate the conditions. Weather in November »

December is the peak of the winter season in Mount Rushmore as the cold dips the mercury column to an average low of 18°F (-7.8°C). Weather in December »

How many days does it rain in Mount Rushmore National Memorial?

Throughout the year, in Mount Rushmore National Memorial, there are 91.5 rainfall days, and 21.6" (547.6mm) of precipitation is accumulated.

What is the driest month in Mount Rushmore National Memorial?

The month with the least rainfall is January when the rain falls for 4.3 days and typically collects 0.4" (9.7mm) of precipitation.

When does it snow in Mount Rushmore National Memorial?

Months with snowfall in Mount Rushmore National Memorial, South Dakota, are January through June, September through December.

How much does it snow in Mount Rushmore National Memorial?

Throughout the year, in Mount Rushmore National Memorial, South Dakota, there are 23.1 snowfall days, and 52.4" (1330.9mm) of snow is accumulated.

What is the snowiest month in Mount Rushmore National Memorial?

April is the month with the most snowfall in Mount Rushmore National Memorial. Snow falls for 3.1 days and accumulates 10.8" (274.3mm) of snow.

What is the wettest month in Mount Rushmore National Memorial?

May is the month with the most rainfall in Mount Rushmore National Memorial, South Dakota. Rain falls for 11.9 days and accumulates 4.2" (107.2mm) of precipitation.

What is the warmest month in Mount Rushmore National Memorial?

The warmest month is July, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 58.8°F (14.9°C).

What is the coldest month in Mount Rushmore National Memorial?

December is the coldest month in Mount Rushmore National Memorial, South Dakota, with an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 18.1°F (-7.7°C).
Average temperature - Mount Rushmore National Memorial, SD
Average rainfall - Mount Rushmore National Memorial, SD
Average rainfall days - Mount Rushmore National Memorial, SD

The month with the highest number of rainy days is June (12.6 days).
The month with the lowest number of rainy days is December (4.2 days).

Average snowfall - Mount Rushmore National Memorial, SD
Average snowfall days - Mount Rushmore National Memorial, SD

Months with the highest number of snowfall days are January and March (3.9 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight - Mount Rushmore National Memorial, SD
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