September weather forecast
Trout Creek, MT

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Weather in September

The first month of the autumn, September, is still a refreshing month in Trout Creek, Montana, with an average temperature varying between 67.3°F (19.6°C) and 39.7°F (4.3°C).

Temperature

Transition from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a moderately hot 78.8°F (26°C) to a refreshing 67.3°F (19.6°C). Trout Creek in September observes a substantial swing from the daily highs, with average nighttime temperatures of 39.7°F (4.3°C).

Humidity

In Trout Creek, the average relative humidity in September is 63%.

Rainfall

In Trout Creek, during September, the rain falls for 7.8 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Trout Creek, during the entire year, the rain falls for 152.1 days and collects up to 22.09" (561mm) of precipitation.

Snowfall

Months with snowfall in Trout Creek are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 90.2 snowfall days, and 58.15" (1477mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 33min.
On the first day of September in Trout Creek, sunrise is at 7:01 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:22 pm MDT.

Sunshine

In Trout Creek, the average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 3 during September translates into the following guidance:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What are the temperatures in Trout Creek in September?

An average high-temperature, in September, in Trout Creek, is 67.3°F (19.6°C) and the average low-temperature is 39.7°F (4.3°C).

What is the average humidity in September in Trout Creek?

In September, the average relative humidity is 63%.

How much does it rain in Trout Creek in September?

In Trout Creek, Montana, in September, during 7.8 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.

When does it start to snow in Trout Creek?

September is the first month it typically snows in Trout Creek, Montana. Throughout September, in the average 0.3 snowfall days, it receives 0.31" (8mm) of snow.

What is the average length of the day in September in Trout Creek?

The average day length in September in Trout Creek, Montana, is 12h and 33min.

When is the sunrise / sunset in September in Trout Creek?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:22 pm MDT.

How long on average sun shines in September in Trout Creek?

In September, the average sunshine duration in Trout Creek is 9h.

What is the UV index reading in September in Trout Creek?

The average daily maximum UV index in September in Trout Creek is 3. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Trout Creek, MT

Average temperature in September - Trout Creek, MT
  • Average high temperature in September: 67.3°F

The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in September: 39.7°F

The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).

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Average pressure in September
Trout Creek, MT

Average pressure in September - Trout Creek, MT
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Trout Creek, MT

Average wind speed in September - Trout Creek, MT
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).

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Average humidity in September
Trout Creek, MT

Average humidity in September - Trout Creek, MT
  • Average humidity in September: 63%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in September
Trout Creek, MT

Average rainfall in September - Trout Creek, MT
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in September
Trout Creek, MT

Average rainfall days in September - Trout Creek, MT
  • Average rainfall days in September: 7.8 days

The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).

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Average snowfall in September
Trout Creek, MT

Average snowfall in September - Trout Creek, MT
  • Average snowfall in September: 0.31"

The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Trout Creek, MT

Average snowfall days in September - Trout Creek, MT
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Trout Creek, MT

Average daylight in September / Average sunshine in September - Trout Creek, MT
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in September
Trout Creek, MT

Average sunshine days in September - Trout Creek, MT
  • Average sunshine days in September: 20.3 days

The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).

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Average UV index in September
Trout Creek, MT

Average UV index in September - Trout Creek, MT
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in September
Trout Creek, MT

Average cloud cover in September - Trout Creek, MT
  • Average cloud cover in September: 25

The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in September
Trout Creek, MT

Average visibility in September - Trout Creek, MT
  • Average visibility in September: 6mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).

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Trout Creek, Montana, USA

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