September weather forecastPolebridge, MT
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Polebridge, Montana, with an average temperature ranging between max 65.3°F (18.5°C) and min 38.5°F (3.6°C).Temperature
September weather is marked by a drop in the average high-temperature, falling from a moderately hot 77.5°F (25.3°C) in August to an enjoyable 65.3°F (18.5°C). Polebridge registers a marked temperature plunge to a wintry 38.5°F (3.6°C) during the cool September nights.Humidity
The average relative humidity in September is 64%.Rainfall
In Polebridge, during September, the rain falls for 9 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 136.9 rainfall days, and 16.46" (418mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Polebridge, during the entire year, snow falls for 107.6 days and aggregates up to 51.42" (1306mm) of snow.Daylight
In September, the average length of the day in Polebridge is 12h and 34min.On the first day of September, sunrise is at 6:55 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:17 pm MDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Polebridge, MT
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is December (25.5°F).
- Average low temperature in September: 38.5°F
The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is February (12.7°F).
Average pressure in September
Polebridge, 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 (29.91"Hg).
Average wind speed in September
Polebridge, MT
- Average wind speed in September: 3.7mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in September
Polebridge, MT
- Average humidity in September: 64%
The month with the highest relative humidity is January (94%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in September
Polebridge, MT
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is March (1.93").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Polebridge, MT
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in September
Polebridge, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (11.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Polebridge, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (21.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Polebridge, MT
- Average daylight in September: 12h and 36min
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 18min).
- Average sunshine in September: 9h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Polebridge, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in September
Polebridge, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Polebridge, MT
- Average cloud cover in September: 25
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Polebridge, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
