September weather forecast
Rudyard, MT

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Weather in September

September, the first month of the autumn in Rudyard, is also an agreeable month, with temperature in the range of an average low of 52.5°F (11.4°C) and an average high of 70.5°F (21.4°C).

Temperature

In September, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 81.3°F (27.4°C) in August to a pleasant 70.5°F (21.4°C). Rudyard, in the month of September, anticipates a consistent average low-temperature of 52.5°F (11.4°C).

Humidity

In Rudyard, the average relative humidity in September is 45%.

Rainfall

In Rudyard, in September, it is raining for 7.6 days, with typically 0.63" (16mm) of accumulated precipitation. In Rudyard, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows in Rudyard. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow. In Rudyard, during the entire year, snow falls for 53.5 days and aggregates up to 14.25" (362mm) of snow.

Daylight

The average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 6:40 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:02 pm MDT.

Sunshine

The average sunshine in September in Rudyard is 10.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a regular UV index of 4 translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Rudyard?

In Rudyard, 70.5°F (21.4°C) is the average high-temperature and 52.5°F (11.4°C) is the average low-temperature during September. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is calculated to be 80.6°F (27°C).

What is the average humidity in September in Rudyard?

In September, the average relative humidity in Rudyard, Montana, is 45%.

How many days does it rain in September in Rudyard?

In Rudyard, Montana, during September, the rain falls for 7.6 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When does it start to snow in Rudyard?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow.

How many hours of daylight does Rudyard have in September?

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

When are sunrise and sunset in September in Rudyard?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 8:03 pm. On the last day of the month, in Rudyard, Montana, sunrise is at 7:21 am and sunset at 7:02 pm MDT.

How many hours of sunshine does Rudyard have in September?

In Rudyard, the average sunshine duration in September is 10.1h.

How high is the UV index in September in Rudyard?

In September, the average daily maximum UV index in Rudyard is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
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
Rudyard, MT

Average temperature in September - Rudyard, MT
  • Average high temperature in September: 70.5°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).

  • Average low temperature in September: 52.5°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

Average pressure in September
Rudyard, MT

Average pressure in September - Rudyard, MT
  • Average pressure in September: 29.93"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in September
Rudyard, MT

Average wind speed in September - Rudyard, MT
  • Average wind speed in September: 9mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in September
Rudyard, MT

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

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).

Average rainfall in September
Rudyard, MT

Average rainfall in September - Rudyard, MT
  • Average rainfall in September: 0.63"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").

Average rainfall days in September
Rudyard, MT

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

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).

Average snowfall in September
Rudyard, MT

Average snowfall in September - Rudyard, MT
  • Average snowfall in September: 0.51"

The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Rudyard, MT

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

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Rudyard, MT
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in September
Rudyard, MT

Average sunshine days in September - Rudyard, MT
  • Average sunshine days in September: 20.3 days

The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).

Average UV index in September
Rudyard, MT

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

Average cloud cover in September
Rudyard, MT

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

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in September
Rudyard, MT

Average visibility in September - Rudyard, 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).

Rudyard, Montana, USA

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