September weather forecast
Beaverton, MT

Share

Weather in September

The first month of the autumn, September, is also an agreeable month in Beaverton, Montana, with an average temperature varying between 53.2°F (11.8°C) and 71.1°F (21.7°C).

Temperature

During Beaverton's transition into September, the average high-temperature lessens, moving from a warm 82.8°F (28.2°C) in August to a pleasant 71.1°F (21.7°C). Beaverton observes an average nighttime low-temperature of 53.2°F (11.8°C) during the month of September.

Humidity

The average relative humidity in September is 46%.

Rainfall

In September, the rain falls for 8.1 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. In Beaverton, during the entire year, the rain falls for 91.8 days and collects up to 10.63" (270mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Beaverton, the average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 6:27 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:49 pm MDT.

Sunshine

In September, the average sunshine in Beaverton, Montana, is 9.8h.

UV index

In Beaverton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Beaverton?

In September, the average high-temperature and low-temperature in Beaverton, Montana, are 71.1°F (21.7°C) and 53.2°F (11.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is estimated at 82.4°F (28°C).

What is the average humidity in September in Beaverton?

In September, the average relative humidity is 46%.

How much does it rain in Beaverton in September?

In Beaverton, Montana, in September, during 8.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in Beaverton?

In Beaverton, Montana, snow does not fall in June through September.

Does it snow in Beaverton in September?

In Beaverton, Montana, in September, it doesn't snow. In October, it regularly snows.

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

In September, the average day length in Beaverton is 12h and 34min.

What time are sunrise and sunset in September in Beaverton?

In September, on the first day of the month, sunrise is at 6:27 am and sunset at 7:49 pm. On the last day of the month, in Beaverton, sunrise is at 7:08 am and sunset at 6:49 pm MDT.

How long on average sun shines in September in Beaverton?

In Beaverton, the average sunshine duration in September is 9.8h.

What is the UV index intensity in September in Beaverton?

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
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Beaverton, MT

Average temperature in September - Beaverton, MT
  • Average high temperature in September: 71.1°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

Average pressure in September
Beaverton, MT

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

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in September
Beaverton, MT

Average wind speed in September - Beaverton, MT
  • Average wind speed in September: 10mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

Average humidity in September
Beaverton, MT

Average humidity in September - Beaverton, MT
  • Average humidity in September: 46%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).

Average rainfall in September
Beaverton, MT

Average rainfall in September - Beaverton, MT
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

Average rainfall days in September
Beaverton, MT

Average rainfall days in September - Beaverton, MT
  • Average rainfall days in September: 8.1 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in September
Beaverton, MT

Average snowfall in September - Beaverton, MT
  • Average snowfall in September: 0"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Beaverton, MT

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

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Beaverton, 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 24min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Beaverton, MT

Average sunshine days in September - Beaverton, MT
  • Average sunshine days in September: 20.6 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

Average UV index in September
Beaverton, MT

Average UV index in September - Beaverton, 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, October, November and December (UV index 2).

Average cloud cover in September
Beaverton, MT

Average cloud cover in September - Beaverton, MT
  • Average cloud cover in September: 26

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in September
Beaverton, MT

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

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

Beaverton, Montana, USA

Weather forecast for your location

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