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 indicates a decrease in the average high-temperature, moving from a moderately hot 75°F (23.9°C) in August to a comfortable 64.8°F (18.2°C). The nighttime temperature during September displays a significant divergence from daily peaks, averaging at a cold 41.4°F (5.2°C).Humidity
The average relative humidity in September is 55%.Rainfall
In Springdale, in September, during 10.6 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 145.9 rainfall days, and 18.27" (464mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Springdale. Throughout September, in the average 1 snowfall days, it receives 1.06" (27mm) of snow. Throughout the year, there are 100.5 snowfall days, and 58.7" (1491mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:02 pm MDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In Springdale, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Springdale have in September?
How high is the UV index in September?
Average temperature in September
Springdale, MT
- Average high temperature in September: 64.8°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in September: 41.4°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is February (11.7°F).
Average pressure in September
Springdale, 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 (29.89"Hg).
Average wind speed in September
Springdale, MT
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in September
Springdale, MT
- Average humidity in September: 55%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Springdale, MT
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.56").
The driest months (with the least rainfall) are January and December (1.02").
Average rainfall days in September
Springdale, MT
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is December (6.8 days).
Average snowfall in September
Springdale, MT
- Average snowfall in September: 1.06"
The month with the highest snowfall is March (9.72").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Springdale, MT
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is February (17.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Springdale, 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 1min
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
Springdale, MT
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (7.1 days).
Average UV index in September
Springdale, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Springdale, MT
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Springdale, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is February (4mi).
Springdale, Montana, USA
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