Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September in Anaconda signals a shift in temperature, down from a warm 73.9°F (23.3°C) in August to an enjoyable 63.7°F (17.6°C). From the heights of the September heat, Anaconda records a mean nighttime low of 39°F (3.9°C).Humidity
The average relative humidity in September is 56%.Rainfall
In September, in Anaconda, the rain falls for 9.9 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Anaconda, there are 139.3 rainfall days, and 18.74" (476mm) of precipitation is accumulated.Snowfall
Months with snowfall in Anaconda are January through June, September through December. September is the first month it typically snows in Anaconda. Throughout September, in the average 1.4 snowfall days, it receives 1.61" (41mm) of snow. Throughout the year, there are 117.3 snowfall days, and 65.47" (1663mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:53 am and sunset at 8:09 pm. On the last day of September, in Anaconda, Montana, sunrise is at 7:30 am and sunset at 7:12 pm MDT.
Sunshine
The average sunshine in September in Anaconda is 9.5h.UV index
In Anaconda, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 3 in September translates into these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Anaconda?
What is the average humidity in September in Anaconda?
How many days does it rain in September in Anaconda?
When does it start snowing in Anaconda?
How many hours of daylight does Anaconda have in September?
What time are sunrise and sunset in September in Anaconda?
How many hours of sunshine does Anaconda have in September?
What is the UV index intensity in September in Anaconda?
Average temperature in September
Anaconda, MT
- Average high temperature in September: 63.7°F
The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (25.3°F).
- Average low temperature in September: 39°F
The month with the highest average low temperature is August (44.6°F).
The coldest month (with the lowest average low temperature) is December (10.8°F).
Average pressure in September
Anaconda, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Anaconda, MT
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and November (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Anaconda, MT
- Average humidity in September: 56%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July and August (50%).
Average rainfall in September
Anaconda, MT
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (2.87").
The driest months (with the least rainfall) are January and December (0.94").
Average rainfall days in September
Anaconda, MT
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Anaconda, MT
- Average snowfall in September: 1.61"
The month with the highest snowfall is February (11.93").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Anaconda, MT
- Average snowfall days in September: 1.4 days
The month with the highest number of snowfall days is February (20.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Anaconda, MT
- 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: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Anaconda, MT
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is September (17.2 days).
The months with the least sunshine days are February and April (7.2 days).
Average UV index in September
Anaconda, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Anaconda, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Anaconda, 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, February, March and December (4mi).
Anaconda, Montana, USA
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