Grand Teton National Park Weather by Month — Temperature & Rainfall Guide

Grand Teton National Park is a region in the United States of America. Many people wonder what the weather conditions are in Grand Teton National Park over the year. What is the best time to visit Grand Teton National Park?

This page shows the average weather conditions by month in Grand Teton National Park over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

January is a winter month. In Jackson you can expect very cold maximum average daytime temperatures around -2°C (28°F) and nighttime temperatures around -13°C (9°F). On average, this month is one of the coldest months of the year in Grand Teton National Park. So be prepared and make sure to dress up warm.

Find more detailed climate information for Grand Teton National Park in January here.

February is a winter month. In Jackson you can expect very cold maximum average daytime temperatures around 0°C (32°F) and nighttime temperatures around -11°C (12°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for Grand Teton National Park in February here.

In Jackson you can expect cold maximum average daytime temperatures around 4°C (39°F) and nighttime temperatures around -7°C (19°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for Grand Teton National Park in March here.

In Jackson you can expect cold maximum average daytime temperatures around 9°C (48°F) and nighttime temperatures around -4°C (25°F).

Find more detailed climate information for Grand Teton National Park in April here.

In Jackson you can expect mild maximum average daytime temperatures around 14°C (57°F) and nighttime temperatures around 0°C (32°F).

Find more detailed climate information for Grand Teton National Park in May here.

June is a summer month. In Jackson you can expect pleasant maximum average daytime temperatures around 21°C (70°F) and nighttime temperatures around 4°C (39°F).

Find more detailed climate information for Grand Teton National Park in June here.

July is a summer month. In Jackson you can expect warm maximum average daytime temperatures around 26°C (79°F) and nighttime temperatures around 7°C (45°F). On average, this month is one of the warmest months of the year in Grand Teton National Park. So be prepared and make sure to dress lightly.

Find more detailed climate information for Grand Teton National Park in July here.

August is a summer month. In Jackson you can expect warm maximum average daytime temperatures around 25°C (77°F) and nighttime temperatures around 7°C (45°F).

Find more detailed climate information for Grand Teton National Park in August here.

In Jackson you can expect pleasant maximum average daytime temperatures around 20°C (68°F) and nighttime temperatures around 4°C (39°F).

Find more detailed climate information for Grand Teton National Park in September here.

In Jackson you can expect cold maximum average daytime temperatures around 11°C (52°F) and nighttime temperatures around -1°C (30°F).

Find more detailed climate information for Grand Teton National Park in October here.

In Jackson you can expect cold maximum average daytime temperatures around 3°C (37°F) and nighttime temperatures around -7°C (19°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for Grand Teton National Park in November here.

December is a winter month. In Jackson you can expect very cold maximum average daytime temperatures around -2°C (28°F) and nighttime temperatures around -12°C (10°F). On average, this month is one of the coldest months of the year in Grand Teton National Park. So be prepared and make sure to dress up warm.

Find more detailed climate information for Grand Teton National Park in December here.