September weather forecast
Red Lodge, MT

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A scenic undulating landscape of rocks and cliffs, mountains and valleys with snaky roads and trail paths in Red Lodge, Montana, Beartooth
A scenic undulating landscape of rocks and cliffs, mountains and valleys with snaky roads and trail paths in Red Lodge, Montana, Beartooth

Weather in September

The onset of autumn in September brings a noticeable drop in temperature to 68.7°F (20.4°C). With the dip, rainfall decreases to 0.98" (25mm), marking a transition towards the drier months. Though remnants of summer still linger, the city begins to anticipate the calm and cool autumn nights. The cloudless skies and reduced humidity level create an excellent setting for stargazing. The golden hues of autumn start replacing the lush green view, creating a picturesque landscape for the visitors and locals alike.

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 77°F (25°C) in August to an agreeable 68.7°F (20.4°C). Throughout September, a steady low-temperature average of 48°F (8.9°C) is noted.

Humidity

In Red Lodge, the average relative humidity in September is 47%.

Rainfall

In Red Lodge, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Red Lodge, during the entire year, the rain falls for 138.8 days and collects up to 16.14" (410mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Red Lodge. September is the first month it typically snows in Red Lodge, Montana. Throughout September, in the average 1.5 snowfall days, it receives 1.54" (39mm) of snow. Throughout the year, in Red Lodge, there are 92.3 snowfall days, and 55.83" (1418mm) of snow is accumulated.

Daylight

In September, the average length of the day is 12h and 31min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:58 pm MDT.

Sunshine

In Red Lodge, the average sunshine in September is 10.7h.

UV index

In Red Lodge, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 4 in September leads to these recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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 Red Lodge?

The high-temperature, in September, in Red Lodge, is 68.7°F (20.4°C), while the low-temperature averages to 48°F (8.9°C).

What is the average humidity in September in Red Lodge?

In Red Lodge, the average relative humidity in September is 47%.

How much does it rain in Red Lodge in September?

In Red Lodge, Montana, in September, it is raining for 9.3 days, with typically 0.98" (25mm) of accumulated precipitation.

When does it start to snow in Red Lodge?

September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 1.54" (39mm) of snow.

How many hours of daylight does Red Lodge have in September?

The average day length in September is 12h and 31min.

When are sunrise and sunset in September in Red Lodge?

On the first day of September in Red Lodge, sunrise is at 6:39 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:58 pm MDT.

How long on average sun shines in September in Red Lodge?

The average sunshine duration in September is 10.7h.

What is the UV index intensity in September in Red Lodge?

In Red Lodge, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents 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
Red Lodge, MT

Average temperature in September - Red Lodge, MT
  • Average high temperature in September: 68.7°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in September: 48°F

The month with the highest average low temperature is July (56.1°F).
The coldest months (with the lowest average low temperature) are February and December (14.9°F).

Average pressure in September
Red Lodge, MT

Average pressure in September - Red Lodge, MT
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Red Lodge, MT

Average wind speed in September - Red Lodge, MT
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in September
Red Lodge, MT

Average humidity in September - Red Lodge, MT
  • Average humidity in September: 47%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (43%).

Average rainfall in September
Red Lodge, MT

Average rainfall in September - Red Lodge, MT
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is December (0.55").

Average rainfall days in September
Red Lodge, MT

Average rainfall days in September - Red Lodge, MT
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is November (5.7 days).

Average snowfall in September
Red Lodge, MT

Average snowfall in September - Red Lodge, MT
  • Average snowfall in September: 1.54"

The month with the highest snowfall is April (9.37").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Red Lodge, MT

Average snowfall days in September - Red Lodge, MT
  • Average snowfall days in September: 1.5 days

The month with the highest number of snowfall days is February (14.8 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Red Lodge, MT

Average daylight in September / Average sunshine in September - Red Lodge, 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 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

Average sunshine days in September
Red Lodge, MT

Average sunshine days in September - Red Lodge, MT
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is December (17.4 days).
The month with the least sunshine days is May (5.1 days).

Average UV index in September
Red Lodge, MT

Average UV index in September - Red Lodge, 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).

Average cloud cover in September
Red Lodge, MT

Average cloud cover in September - Red Lodge, MT
  • Average cloud cover in September: 17

The month with the most cloud cover is February (Cloud cover 36).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in September
Red Lodge, MT

Average visibility in September - Red Lodge, 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).

Red Lodge, Montana, USA

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