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 onset of September entails a temperature shift, as the average high-temperature decreases from a moderately hot 81.9°F (27.7°C) in August to a pleasant 70.9°F (21.6°C). A significant temperature decrease to an average a chilly 44.4°F (6.9°C) characterizes Cardwell's nighttime temperatures during September.Humidity
In Cardwell, the average relative humidity in September is 49%.Rainfall
In Cardwell, during September, the rain falls for 8.4 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Cardwell, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.83" (21mm) of snow. Throughout the year, there are 79.6 snowfall days, and 30.08" (764mm) of snow is accumulated.Daylight
The average length of the day in September in Cardwell is 12h and 31min.On the first day of September, sunrise is at 6:49 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:09 pm MDT.
Sunshine
In Cardwell, the average sunshine in September is 10h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Cardwell?
What is the average humidity in September in Cardwell?
How much does it rain in Cardwell in September?
When does it start snowing in Cardwell?
How many hours of daylight does Cardwell have in September?
When are sunrise and sunset in September in Cardwell?
How many hours of sunshine does Cardwell have in September?
How high is the UV index in September in Cardwell?
Average temperature in September
Cardwell, MT
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in September: 44.4°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).
Average pressure in September
Cardwell, MT
- Average pressure in September: 29.98"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Cardwell, MT
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Cardwell, MT
- Average humidity in September: 49%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).
Average rainfall in September
Cardwell, MT
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Cardwell, MT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in September
Cardwell, MT
- Average snowfall in September: 0.83"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Cardwell, MT
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Cardwell, 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: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Cardwell, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in September
Cardwell, 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 December (UV index 1).
Average cloud cover in September
Cardwell, MT
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Cardwell, 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 month with the lowest visibility is January (4mi).
Cardwell, Montana, USA
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