Grand Teton National Park (United States of America) is a place with a cold continental climate. The day temperatures range from -4.2 °C (24.4 °F) in December to 26.1 °C (79.0 °F) in July. Temperatures during the night go from -16.9 °C (1.6 °F) in December to 5.9 °C (42.6 °F) in July. The driest month is August with just 7 days of rain, on the contrary, the month when it rains the most is March with 12 days of rain.

January weather

The day temperature starts to rise, its value is -3.3 °C (26.1 °F) in Grand Teton National Park, while the maximum of the sea temperature is observable, with its value of 0.0 °C (32.0 °F). The beginning of the rise of the number of sun hours (without clouds) could be noticed, with its value being 5 hours.

February weather

The rainfall amount starts to descent in February in Grand Teton National Park. The night temperature starts to rise, with its value of -16.0 °C (3.2 °F), while the day temperature rises similarly to the previous month, with its value being -1.0 °C (30.2 °F). The number of sun hours (without clouds) continues to rise, with its value being 6 hours. The minimum of the wind speed is observable, with its value being 2.9.

March weather

The rise of the day temperature can be observed, with its value of 4.7 °C (40.5 °F) in Grand Teton National Park, and the rise of the night temperature can be observed as well. The maximum of the number of rainy days can be noticed, with its value being 12 days. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 8 hours.

April weather

The rise of the day temperature can be observed, with its value of 8.3 °C (46.9 °F) in Grand Teton National Park, and the night temperature continues to rise too, with its value of -5.9 °C (21.4 °F). The maximum of the wind speed can be noticed in April. The number of sun hours (without clouds) continues to rise, with its value of 8 hours.

May weather

The rainfall amount starts to rise in this month in Grand Teton National Park. The night temperature continues to rise, and the rise of the day temperature can be observed too, the value of this measure is 14.4 °C (57.9 °F). The number of sun hours (without clouds) rises similarly to the previous month, with its value being 9 hours.

June weather

The tourist season slowly starts in Grand Teton National Park. The day temperature rises similarly to the previous month, the value of this measure is 20.4 °C (68.7 °F), and the night temperature continues to rise too, its value is 2.9 °C (37.2 °F). The beginning of the descent of the number of rainy days could be noticed, with its value being 9 days, and the rainfall amount descent's start could be observed too in this month. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 10 hours.

July weather

The maximum of the day temperature is observable, with its value of 26.1 °C (79.0 °F) in Grand Teton National Park, and the maximum of the night temperature is observable as well, the value of this measure is 5.9 °C (42.6 °F). The tourist season is close to its peak, while the dry season is about to start. The number of rainy days descents similarly to the previous month, with its value of 8 days. The maximum of the number of sun hours (without clouds) can be noticed, the value of this measure is 11 hours.

August weather

The number of rainy days is on its minimum, its value is 7 days in Grand Teton National Park, and the minimum of the rainfall amount can be noticed as well, with its value of 33 mm (1.31 in). The ongoing tourist season is noticeable, and the ongoing dry season is noticeable as well. The beginning of the descent of the night temperature could be noticed in August. The humidity is on its minimum, with its value being 44 %.

September weather

The ongoing tourist season is noticeable in Grand Teton National Park, and the ongoing dry season is noticeable as well. The beginning of the rise of the rainfall amount could be noticed, with its value of 39 mm (1.52 in). The day temperature starts to descent, with its value being 20.2 °C (68.4 °F), while the night temperature descents similarly to the previous month, its value is 0.8 °C (33.4 °F). The number of sun hours (without clouds) descents similarly to the previous month, with its value of 9 hours.

October weather

The descent of the day temperature can be observed, the value of this measure is 11.8 °C (53.2 °F) in Grand Teton National Park, and the night temperature continues to descent as well, its value is -4.5 °C (23.9 °F). The rainfall amount continues to rise, with its value being 45 mm (1.79 in). The dry season continues in October. The descent of the number of sun hours (without clouds) can be observed, with its value being 7 hours.

November weather

The descent of the day temperature can be observed, with its value being 2.6 °C (36.7 °F) in Grand Teton National Park, and the night temperature continues to descent as well, the value of this measure is -10.0 °C (14.0 °F). The rainfall amount continues to rise, the value of this measure is 69 mm (2.71 in), while the number of rainy days rise's start could be observed, with its value of 11 days. The number of sun hours (without clouds) descents similarly to the previous month, with its value being 5 hours.

December weather

The number of rainy days rises similarly to the previous month, its value is 12 days in Grand Teton National Park, while the maximum of the rainfall amount can be noticed, with its value being 74 mm (2.92 in). The day temperature reaches its minimum, the value of this measure is -4.2 °C (24.4 °F), and the minimum of the night temperature can be noticed too in December. The number of sun hours (without clouds) is on its minimum, with its value being 4 hours. The day length is on its minimum in this month.

FAQs

How many sunny hours can I expect in Grand Teton National Park in May?

In May in Grand Teton National Park, you can expect around 9 hours of sunshine.

Is June a good month to visit Grand Teton National Park?

June is a good month to visit Grand Teton National Park. There are only 9 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 20.4 °C (68.7 °F), but others will feel perfectly fine. The night temperature of 2.9 °C (37.2 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.

Is it hot in July in Grand Teton National Park?

In Grand Teton National Park in July, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

What is the temperature in Grand Teton National Park during the day in August?

In August in Grand Teton National Park, the average daily temperatures will be 26.0 °C (78.8 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.

How many days of precipitation on average can I expect in Grand Teton National Park in September?

There are 8 days, which are rainy in September in Grand Teton National Park, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.9 days of the week, or in general - 27 % days.

Is October part of the wet season in Grand Teton National Park?

No, there is no wet season in October in Grand Teton National Park - you can expect 8 days of rain during the month.