September weather forecast and climate
Brusett, MT

The first month of the autumn, September, is also an agreeable month in Brusett, Montana, with average temperature ranging between max 71.2°F (21.8°C) and min 54.9°F (12.7°C).

Temperature

In Brusett, the average high-temperature drops, from a moderately hot 82.6°F (28.1°C) in August, to an agreeable 71.2°F (21.8°C). In Brusett, the average low-temperature is 54.9°F (12.7°C).

Humidity

The average relative humidity in Brusett is 44%.

Rainfall

In Brusett, during September, the rain falls for 8.7 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, in Brusett, there are 104.8 rainfall days, and 13.03" (331mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 58.4 snowfall days, and 21.1" (536mm) of snow is accumulated.

Daylight

In Brusett, Montana, the average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine is 10.1h.

UV index

In September, the average daily maximum UV index in Brusett is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Brusett?

In September, in Brusett, Montana, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 54.9°F (12.7°C).

What is the average humidity in September in Brusett?

In September, the average relative humidity in Brusett is 44%.

How many days does it rain in September in Brusett?

In Brusett, in September, during 8.7 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When does it start to snow in Brusett?

September is the first month it typically snows in Brusett, Montana. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Brusett have in September?

In Brusett, the average length of the day in September is 12.5h.

How many hours of sunshine does Brusett have in September?

In September, the average sunshine in Brusett, Montana, is 10.1h.

How high is the UV index in September in Brusett?

In Brusett, Montana, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Brusett, MT
  • Average high temperature in September: 21.8°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (-2.4°C).

  • Average low temperature in September: 12.7°C

The month with the highest average low temperature is July (18°C).
The coldest month (with the lowest average low temperature) is January (-9.6°C).

Average pressure in September - Brusett, MT
  • Average pressure in September: 1013.2mbar

The month with the highest atmospheric pressure is February (1020.6mbar).
The month with the lowest atmospheric pressure is June (1010.3mbar).

Average wind speed in September - Brusett, MT
  • Average wind speed in September: 16.9km/h

The windiest month (with the highest average wind speed) is April (19.3km/h).
The calmest month (with the lowest average wind speed) is February (15.9km/h).

Average humidity in September - Brusett, MT
  • Average humidity in September: 44%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (40%).

Average rainfall in September - Brusett, MT
  • Average rainfall in September: 28mm

The wettest months (with the highest rainfall) are May and June (48mm).
The driest month (with the least rainfall) is November (16mm).

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

The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in September - Brusett, MT
  • Average snowfall in September: 1mm

The month with the highest snowfall is December (113mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in September - Brusett, MT
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is December (12.5 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in September / Average sunshine in September - Brusett, MT
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in September: 10.1h

The month with the most sunshine is July (Average sunshine: 11.9h).
Months with the least sunshine are January and February (Average sunshine: 4.9).

Average sunshine days in September - Brusett, MT
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is April (12.3 days).

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in September - Brusett, MT
  • Average visibility in September: 10km

Months with the highest visibility are May, June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).