September weather forecastClancy, MT
September
Weather in September
September, the first month of the autumn in Clancy, is also an agreeable month, with an average temperature varying between 43.9°F (6.6°C) and 68.2°F (20.1°C).Temperature
In Clancy, the average high-temperature in September decreases from a warm 78.1°F (25.6°C) in August to a pleasant 68.2°F (20.1°C). Clancy's temperature in September declines substantially from daytime highs, settling at a consistent average of 43.9°F (6.6°C) during the nights.Humidity
In Clancy, the average relative humidity in September is 51%.Rainfall
In Clancy, in September, during 8.1 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 123.7 rainfall days, and 12.4" (315mm) 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 0.7 snowfall days, it receives 1.77" (45mm) of snow. Throughout the year, there are 80.4 snowfall days, and 34.88" (886mm) of snow is accumulated.Daylight
In Clancy, the average length of the day in September is 12h and 32min.On the first day of September in Clancy, sunrise is at 6:49 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:09 pm MDT.
Sunshine
In Clancy, the average sunshine in September is 9.7h.UV index
In Clancy, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clancy, MT
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in September: 43.9°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).
Average pressure in September
Clancy, MT
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Clancy, MT
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is November (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Clancy, MT
- Average humidity in September: 51%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in September
Clancy, MT
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").
Average rainfall days in September
Clancy, MT
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7 days).
Average snowfall in September
Clancy, MT
- Average snowfall in September: 1.77"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Clancy, MT
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Clancy, MT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 9h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Clancy, MT
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in September
Clancy, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Clancy, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Clancy, MT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
