September weather forecast
Broadus, MT

Share

Weather in September

September, the first month of the autumn in Broadus, is also a moderately hot month, with an average temperature fluctuating between 73.8°F (23.2°C) and 53.2°F (11.8°C).

Temperature

September brings a decrease in the average high-temperature, shifting from a moderately hot 83.3°F (28.5°C) in August to a still warm 73.8°F (23.2°C). During September, Broadus records an average temperature of 53.2°F (11.8°C) at night.

Humidity

The average relative humidity in September in Broadus, Montana, is 45%.

Rainfall

In September, the rain falls for 10.3 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. Throughout the year, there are 113.9 rainfall days, and 14.84" (377mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows in Broadus. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 55.2 snowfall days, and 23.5" (597mm) of snow is accumulated.

Daylight

In Broadus, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 6:24 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:43 pm MDT.

Sunshine

In September, the average sunshine is 10.4h.

UV index

The average daily maximum UV index in September in Broadus is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 4 in September leads to these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. It's recommended to limit sun exposure when its radiation is at its peak during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
[Resources]

Frequently asked questions

What are the temperatures in Broadus in September?

In September, the average high-temperature and low-temperature in Broadus are 73.8°F (23.2°C) and 53.2°F (11.8°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 82.4°F (28°C).

What is the average humidity in September in Broadus?

The average relative humidity in September in Broadus is 45%.

How much does it rain in Broadus in September?

In Broadus, Montana, in September, it is raining for 10.3 days, with typically 1.38" (35mm) of accumulated precipitation.

When does it start to snow in Broadus?

September is the first month it typically snows in Broadus, Montana. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow.

How many hours of daylight does Broadus have in September?

In Broadus, the average day length in September is 12h and 31min.

What time are sunrise and sunset in September in Broadus?

On the first day of September, sunrise is at 6:24 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:43 pm MDT.

How long on average sun shines in September in Broadus?

In September, the average sunshine duration is 10.4h.

What is the UV index intensity in September in Broadus?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Broadus, MT

Average temperature in September - Broadus, MT
  • Average high temperature in September: 73.8°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (16°F).

[Resources]

Average pressure in September
Broadus, MT

Average pressure in September - Broadus, MT
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

[Resources]

Average wind speed in September
Broadus, MT

Average wind speed in September - Broadus, MT
  • Average wind speed in September: 8.4mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

[Resources]

Average humidity in September
Broadus, MT

Average humidity in September - Broadus, MT
  • Average humidity in September: 45%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (42%).

[Resources]

Average rainfall in September
Broadus, MT

Average rainfall in September - Broadus, MT
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is December (0.47").

[Resources]

Average rainfall days in September
Broadus, MT

Average rainfall days in September - Broadus, MT
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.8 days).

[Resources]

Average snowfall in September
Broadus, MT

Average snowfall in September - Broadus, MT
  • Average snowfall in September: 0.16"

The month with the highest snowfall is February (4.33").
The months with the least snowfall are July and August (0").

[Resources]

Average snowfall days in September
Broadus, MT

Average snowfall days in September - Broadus, MT
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are July and August (0 days).

[Resources]

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

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

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

  • Average sunshine in September: 10h and 2min

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 0min).

[Resources]

Average sunshine days in September
Broadus, MT

Average sunshine days in September - Broadus, MT
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.3 days).

[Resources]

Average UV index in September
Broadus, MT

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).

[Resources]

Average cloud cover in September
Broadus, MT

Average cloud cover in September - Broadus, MT
  • Average cloud cover in September: 21

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 15).

[Resources]

Average visibility in September
Broadus, MT

Average visibility in September - Broadus, 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).

[Resources]

Broadus, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location