Montana - National parks weather in September 2025
Montana - National parks weather in September 2025
Day
20 °C
Night
4 °C
Precipitation
52 mm
in month
Rainy days
9 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
63 %
Day
20 °C
Night
4 °C
Precipitation
52 mm
in month
Rainy days
9 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
63 %
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Weather overview and FAQs
Weather overview
In Montana - National parks in September, the average air temperature ranges from 20 °C (68 °F) during the day to 4 °C (39 °F) at night. There are 9 days of rain on average, where the rainfall is 52 mm (2.06 in).
Is September a good month to visit Montana - National parks?
There are good conditions for visiting in Montana - National parks in September. You can expect just 9 days of rain during the month, taking an umbrella is not necessary. There are some people, who may feel a slight chill at 20 °C (68 °F), but others will feel perfectly fine. The night temperature of 4 °C (39 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
How heavy is the precipitation in September in Montana - National parks?
In September in Montana - National parks, there is 52 mm (2.06 in) rainfall, which means on average 2 mm (0.07 in) rainfall per day.
What temperature can I expect during the day in Montana - National parks in September?
In September in Montana - National parks, the average daily temperatures will be 20 °C (68 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
How many days of precipitation on average can I expect in September in Montana - National parks?
There are 9 days, which are rainy in September in Montana - National parks, 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 2.1 days of the week, or in general - 30 % days.
What is the night temperature in September in Montana - National parks?
The average night temperature in Montana - National parks in September is 4 °C (39 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
How long is the day (from dawn till dusk) in Montana - National parks in September?
The length of daylight in Montana - National parks in September is 12 hours.
Is there a wet season in September in Montana - National parks?
No, there is no wet season in Montana - National parks in September - you can expect 9 days of rain during the month.
How many hours of sun to expect in September in Montana - National parks?
There is an average length of sunshine of 7 hours per day in Montana - National parks in September.
Is the weather in Montana - National parks warmer in September than in August?
No, in Montana - National parks in September the temperature is not higher than in August.
How windy is it in September in Montana - National parks?
An average wind scale that can be expected in Montana - National parks in September is 3.
Is Montana - National parks rainier in September than in October?
No, in September in Montana - National parks it does not rain more than in October.
What is the temperature trend in September in Montana - National parks?
During September in Montana - National parks, the day temperatures are decreasing - from 23 °C (74 °F) at the beginning of the month to 16 °C (61 °F) at the end of the month.