September weather forecast and climate
Red Lodge, MT

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
September, the first month of the autumn, in Red Lodge, is also an agreeable month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 68.7°F (20.4°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 77°F (25°C) in August, to a pleasant 68.7°F (20.4°C). In September, the average low-temperature is 48°F (8.9°C).

Humidity

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

Rainfall

In Red Lodge, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 138.8 rainfall days, and 16.14" (410mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 1.54" (39mm) of snow. In Red Lodge, during the entire year, snow falls for 92.3 days, and aggregates up to 55.83" (1418mm) of snow.

Daylight

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

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 the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in September in Red Lodge?

In Red Lodge, in September, the average high-temperature is 68.7°F (20.4°C), and the average low-temperature is 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, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When does it start snowing 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?

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

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

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

How high is the UV index in September in Red Lodge?

In September, the average daily maximum UV index in Red Lodge, Montana, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
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: 29.97"

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

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: 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: 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: 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: 1.54"

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

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).
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: 12.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in September: 10.7h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.5h).

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: 4

The month with the highest UV index is July (UV index 6).
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: 17

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

Average visibility in September - Red Lodge, MT
  • Average visibility in September: 6mi

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