September
Weather in September
Temperature
September's onset brings a negligible change in high-temperatures, falling from a refreshing 67.6°F in August to a moderate 60.6°F. During September, Montana's temperature averages to a chilly 44.4°F at night.Humidity
The most humid month in Montana is September, with an average relative humidity of 72%.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows in Montana. Throughout September, in the average 0.1 snowfall days, it receives 0.31" of snow. Throughout the year, there are 46.9 snowfall days, and 171.57" of snow is accumulated.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 06:51 and sunset at 20:08. On the last day of September, sunrise is at 07:27 and sunset at 19:11 CEST.
Sunshine
In Montana, the average sunshine in September is 6.7h.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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Average temperature in September
Montana, Switzerland
- Average high temperature in September: 60.6°F
The warmest month (with the highest average high temperature) is July (68.9°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 44.4°F
The month with the highest average low temperature is July (49.8°F).
The coldest month (with the lowest average low temperature) is February (23°F).
Average humidity in September
Montana, Switzerland
- Average humidity in September: 72%
The month with the highest relative humidity is September (72%).
The month with the lowest relative humidity is April (64%).
Average snowfall in September
Montana, Switzerland
- Average snowfall in September: 0.3"
The month with the highest snowfall is January (45.1").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Montana, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Montana, Switzerland
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is July (Average sunshine: 8h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
