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 shift to September brings a decrease in the average high-temperature, falling from a warm 73.9°F (23.3°C) in August to an enjoyable 63.7°F (17.6°C). Warm Springs reports a sharp reduction in temperature during September, averaging at a cold 39.4°F (4.1°C) at night.Humidity
The average relative humidity in September is 56%.Rainfall
In Warm Springs, in September, it is raining for 8.7 days, with typically 1.1" (28mm) of accumulated precipitation. In Warm Springs, during the entire year, the rain falls for 128.3 days and collects up to 16.57" (421mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Warm Springs. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 1.81" (46mm) of snow. Throughout the year, there are 110.5 snowfall days, and 59.8" (1519mm) of snow is accumulated.Daylight
In Warm Springs, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:52 am and sunset at 8:09 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:12 pm MDT.
Sunshine
In September, the average sunshine in Warm Springs is 9.5h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. To avoid the Sun's strongest rays, limit exposure around the mid-day period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
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 Warm Springs have in September?
What is the UV index intensity in September?
Average temperature in September
Warm Springs, 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: 39.4°F
The month with the highest average low temperature is July (45.3°F).
The coldest month (with the lowest average low temperature) is December (10.4°F).
Average pressure in September
Warm Springs, 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
Warm Springs, MT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Warm Springs, 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
Warm Springs, MT
- Average rainfall in September: 1.1"
The wettest months (with the highest rainfall) are May and June (2.44").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Warm Springs, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Warm Springs, MT
- Average snowfall in September: 1.81"
The month with the highest snowfall is February (10.51").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Warm Springs, MT
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is February (19.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Warm Springs, 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 month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Warm Springs, MT
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is August (17.8 days).
The month with the least sunshine days is April (8 days).
Average UV index in September
Warm Springs, 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
Warm Springs, 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
Warm Springs, 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).
Warm Springs, Montana, USA
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