Grand Teton National Park

Grand Teton National Park Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Grand Teton National Park, the United States of America in September.

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Jackson Moose Wilson Road Moran

Are you planning a trip a to Grand Teton National Park, the United States of America in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Grand Teton National Park in September

Grand Teton National Park, the United States of America is a region in the United States of America. September in Grand Teton National Park generally has pleasant temperatures, with moderate precipitation.

Temperatures

You can expect pleasant maximum daytime temperatures of around 20°C (68°F) and nighttime temperatures around 4°C (39°F) in Jackson.

For specific regional insights in Grand Teton National Park, the United States of America, refer to the map provided below.

Precipitation

September is a moderate rainy month with an average rainfall of around 40 mm (1.6 in) in Jackson.

Average sunshine

Plenty of sunshine can be expected in numerous places in September. Jackson typically receives 250 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Grand Teton National Park by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Grand Teton National Park in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Grand Teton National Park.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Grand Teton National Park

What is the weather like in September for some of the most popular destinations in Grand Teton National Park, the United States of America?

Temperature range in Grand Teton National Park (September)

Precipitation variation in Grand Teton National Park (September)

Jackson

In September Jackson generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
25°C (77°F)
20°C (68°F)
11°C (52°F)
Min temperature
7°C (45°F)
4°C (39°F)
-1°C (30°F)
Monthly sun hours
320 hours
250 hours
210 hours
Monthly rainfall
30 mm (1.2 in)
40 mm (1.6 in)
54 mm (2.1 in)
Monthly rainy days
9 days
9 days
12 days
Weather conditions
perfect
perfect
unpleasant
Climate in Jackson →

Moose Wilson Road

In September Moose Wilson Road generally has pleasant temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 2°C (36°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
22°C (72°F)
13°C (55°F)
Min temperature
5°C (41°F)
2°C (36°F)
-3°C (27°F)
Monthly sun hours
320 hours
250 hours
210 hours
Monthly rainfall
31 mm (1.2 in)
39 mm (1.5 in)
42 mm (1.7 in)
Monthly rainy days
11 days
8 days
12 days
Weather conditions
perfect
perfect
unpleasant
Climate in Moose Wilson Road →

Moran

In September Moran generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 2°C (36°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
25°C (77°F)
21°C (70°F)
12°C (54°F)
Min temperature
5°C (41°F)
2°C (36°F)
-3°C (27°F)
Monthly sun hours
320 hours
250 hours
210 hours
Monthly rainfall
29 mm (1.1 in)
41 mm (1.6 in)
55 mm (2.2 in)
Monthly rainy days
11 days
9 days
14 days
Weather conditions
perfect
perfect
unpleasant
Climate in Moran →

Is your destination not in the list? Have a look at all destinations in Grand Teton National Park, in the United States of America.

Popular cities in September

Day & night temperatures, rainfall and average weather in Grand Teton National Park in September.

City Weather Day temp Night temp Rainfall
Jackson 20°C (68°F) 4°C (39°F) 40 mm (1.6 in)
Moose Wilson Road 22°C (72°F) 2°C (36°F) 39 mm (1.5 in)
Moran 21°C (70°F) 2°C (36°F) 41 mm (1.6 in)

Grand Teton National Park weather in September: frequently asked questions

What is the weather like in Grand Teton National Park, the United States of America in September?

Expect perfect weather across Grand Teton National Park, the United States of America in September. The popular destination of Jackson averages 20°C (68°F) by day and 4°C (39°F) at night during this month.

What is the average temperature in Grand Teton National Park, the United States of America in September?

In Jackson, the average daytime high in September is 20°C (68°F), while nighttime temperatures drop to around 4°C (39°F).

Does Grand Teton National Park, the United States of America get a lot of rain in September?

September is on the drier side in Grand Teton National Park, the United States of America. Jackson averages only about 40 mm (1.6 in), with most days staying dry.

Is September a Good Time to Visit Grand Teton National Park, the United States of America?

We believe that September is one of the best times to visit Grand Teton National Park, the United States of America with overall perfect weather in Jackson. However, the weather conditions may vary depending on your destination.

Generally speaking, June, July, August and September provide perfect weather in Jackson. On the other hand, the months of January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Grand Teton National Park.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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