September weather forecast
Elliston, MT

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Weather in September

The first month of the autumn, September, is also an enjoyable month in Elliston, Montana, with an average temperature varying between 66.2°F (19°C) and 42.4°F (5.8°C).

Temperature

As September commences, the average high-temperature shows a reduction, transitioning from a moderately hot 76.6°F (24.8°C) in August to a refreshing 66.2°F (19°C). Elliston in September observes a sharp transition from the daytime heat, falling to an average low of 42.4°F (5.8°C).

Humidity

In Elliston, the average relative humidity in September is 54%.

Rainfall

In Elliston, during September, the rain falls for 7.6 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Elliston, during the entire year, the rain falls for 106.9 days and collects up to 13.27" (337mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Elliston, Montana. Throughout September, in the average 1.8 snowfall days, it receives 3.03" (77mm) of snow. In Elliston, during the entire year, snow falls for 92.7 days and aggregates up to 45.59" (1158mm) of snow.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:08 pm. On the last day of September, in Elliston, sunrise is at 7:28 am and sunset at 7:10 pm MDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 3 during September leads to these advisories:
Take precautions. Light skin individuals may get burned in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the average September temperature in Elliston?

During September, Elliston experiences an average high-temperature of 66.2°F (19°C) and a low-temperature of 42.4°F (5.8°C).

What is the average humidity in September in Elliston?

In September, the average relative humidity in Elliston is 54%.

How many days does it rain in September in Elliston?

In Elliston, during September, the rain falls for 7.6 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When does it start to snow in Elliston?

September is the first month it typically snows in Elliston, Montana. Throughout September, in the average 1.8 snowfall days, it receives 3.03" (77mm) of snow.

What is the average length of the day in September in Elliston?

In September, the average day length is 12h and 32min.

What time are sunrise and sunset in September in Elliston?

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 8:08 pm. On the last day of the month, in Elliston, Montana, sunrise is at 7:28 am and sunset at 7:10 pm MDT.

How many hours of sunshine does Elliston have in September?

In Elliston, the average sunshine duration in September is 9.7h.

What is the UV index reading in September in Elliston?

In Elliston, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Elliston, MT

Average temperature in September - Elliston, MT
  • Average high temperature in September: 66.2°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (26.2°F).

  • Average low temperature in September: 42.4°F

The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).

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Average pressure in September
Elliston, MT

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Elliston, MT

Average wind speed in September - Elliston, MT
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is November (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Elliston, MT

Average humidity in September - Elliston, MT
  • Average humidity in September: 54%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (48%).

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Average rainfall in September
Elliston, MT

Average rainfall in September - Elliston, MT
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is June (2.6").
The driest months (with the least rainfall) are January and December (0.59").

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Average rainfall days in September
Elliston, MT

Average rainfall days in September - Elliston, MT
  • Average rainfall days in September: 7.6 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in September
Elliston, MT

Average snowfall in September - Elliston, MT
  • Average snowfall in September: 3.03"

The month with the highest snowfall is February (7.13").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Elliston, MT

Average snowfall days in September - Elliston, MT
  • Average snowfall days in September: 1.8 days

The month with the highest number of snowfall days is February (15.1 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Elliston, MT

Average daylight in September / Average sunshine in September - Elliston, MT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

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Average sunshine days in September
Elliston, MT

Average sunshine days in September - Elliston, MT
  • Average sunshine days in September: 18.6 days

The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is May (10.6 days).

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Average UV index in September
Elliston, MT

Average UV index in September - Elliston, MT
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in September
Elliston, MT

Average cloud cover in September - Elliston, MT
  • Average cloud cover in September: 22

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 14).

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Average visibility in September
Elliston, MT

Average visibility in September - Elliston, MT
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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Elliston, Montana, USA

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