September weather forecast
Denton, MT

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Weather in September

September, the first month of the autumn in Denton, is still a refreshing month, with an average temperature fluctuating between 47.1°F (8.4°C) and 67.5°F (19.7°C).

Temperature

September ushers in a slight temperature change, with average high-temperatures reducing from August's warm 78.1°F (25.6°C) to a comfortable 67.5°F (19.7°C). Denton, during the month of September, experiences an average low-temperature of 47.1°F (8.4°C).

Humidity

In Denton, the average relative humidity in September is 52%.

Rainfall

In Denton, during September, the rain falls for 8.7 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Denton, during the entire year, the rain falls for 126.2 days and collects up to 17.83" (453mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 1.3" (33mm) of snow. Throughout the year, in Denton, Montana, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.

Daylight

In Denton, the average length of the day in September is 12h and 32min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:00 pm MDT.

Sunshine

In Denton, the average sunshine in September is 10h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 4 in September suggests the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the usual temperature for Denton in September?

An average high-temperature, in September, in Denton, is 67.5°F (19.7°C) and the average low-temperature is 47.1°F (8.4°C).

What is the average humidity in September in Denton?

The average relative humidity in September is 52%.

How much does it rain in Denton in September?

In Denton, Montana, in September, during 8.7 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When does it start to snow in Denton?

September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 1.3" (33mm) of snow.

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

The average day length in September is 12h and 32min.

When are sunrise and sunset in September in Denton?

In September, on the first day of the month, sunrise is at 6:39 am and sunset at 7:59 pm. On the last day of the month, in Denton, Montana, sunrise is at 7:18 am and sunset at 7:00 pm MDT.

How many hours of sunshine does Denton have in September?

In Denton, Montana, the average sunshine duration in September is 10h.

What is the UV index reading in September in Denton?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from 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
Denton, MT

Average temperature in September - Denton, MT
  • Average high temperature in September: 67.5°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).

  • Average low temperature in September: 47.1°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

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Average pressure in September
Denton, MT

Average pressure in September - Denton, MT
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Denton, MT

Average wind speed in September - Denton, MT
  • Average wind speed in September: 8.5mph

The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).

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Average humidity in September
Denton, MT

Average humidity in September - Denton, MT
  • Average humidity in September: 52%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in September
Denton, MT

Average rainfall in September - Denton, MT
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").

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Average rainfall days in September
Denton, MT

Average rainfall days in September - Denton, MT
  • Average rainfall days in September: 8.7 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).

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Average snowfall in September
Denton, MT

Average snowfall in September - Denton, MT
  • Average snowfall in September: 1.3"

The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Denton, MT

Average snowfall days in September - Denton, MT
  • Average snowfall days in September: 1 days

The month with the highest number of snowfall days is February (15.2 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
Denton, MT

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

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

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Average sunshine days in September
Denton, MT

Average sunshine days in September - Denton, MT
  • Average sunshine days in September: 19.3 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).

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Average UV index in September
Denton, MT

Average UV index in September - Denton, MT
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in September
Denton, MT

Average cloud cover in September - Denton, MT
  • Average cloud cover in September: 23

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in September
Denton, MT

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

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

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Denton, Montana, USA

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