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 is marked by a decrease in temperature, transitioning from a moderately hot 84.7°F (29.3°C) in August to a still warm 74.3°F (23.5°C). The average temperature during September nights dips to a refreshing 56.3°F (13.5°C).Humidity
In September, the average relative humidity in Sixmile Crossing is 43%.Rainfall
In Sixmile Crossing, in September, during 6.7 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 83.1 rainfall days, and 6.81" (173mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Sixmile Crossing, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:22 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:42 pm MDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Sixmile Crossing?
What is the average humidity in September in Sixmile Crossing?
How much does it rain in Sixmile Crossing in September?
When it does not snow in Sixmile Crossing?
Does it snow in Sixmile Crossing in September?
How many hours of daylight does Sixmile Crossing have in September?
When are sunrise and sunset in September in Sixmile Crossing?
How many hours of sunshine does Sixmile Crossing have in September?
What is the UV index intensity in September in Sixmile Crossing?
Average temperature in September
Sixmile Crossing, MT
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Sixmile Crossing, MT
- Average pressure in September: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Sixmile Crossing, MT
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).
Average humidity in September
Sixmile Crossing, MT
- Average humidity in September: 43%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Sixmile Crossing, MT
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").
Average rainfall days in September
Sixmile Crossing, MT
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in September
Sixmile Crossing, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sixmile Crossing, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Sixmile Crossing, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Sixmile Crossing, MT
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).
Average UV index in September
Sixmile Crossing, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Sixmile Crossing, MT
- Average cloud cover in September: 21
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Sixmile Crossing, MT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Sixmile Crossing, Montana, USA
Weather forecast for your location
2. Allow the app to use your location