September weather forecastRed Lodge, MT
September
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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"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: 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").
The 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).
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: 12h and 30min
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 42min
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: 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).
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: 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: 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).
