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
September brings a decrease in the average high-temperature, falling from August's moderately hot 76.8°F (24.9°C) to a refreshing 66.7°F (19.3°C). A noticeable downturn in temperature characterizes the September nights, averaging at an icy 41.9°F (5.5°C).Humidity
In Bowman Place, the average relative humidity in September is 50%.Rainfall
In September, in Bowman Place, the rain falls for 8.4 days. Throughout September, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 111 rainfall days, and 9.25" (235mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Bowman Place, Montana. Throughout September, in the average 0.8 snowfall days, it receives 1.18" (30mm) of snow. Throughout the year, there are 73.8 snowfall days, and 27.52" (699mm) 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 6:51 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:09 pm MDT.
Sunshine
The average sunshine in September is 9.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 during September translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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 much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Bowman Place have in September?
How high is the UV index in September?
Average temperature in September
Bowman Place, MT
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is December (10.6°F).
Average pressure in September
Bowman Place, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Bowman Place, MT
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is November (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Bowman Place, MT
- Average humidity in September: 50%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in September
Bowman Place, MT
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is June (1.34").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Bowman Place, MT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (13.9 days).
The months with the least rainy days are November and December (6.2 days).
Average snowfall in September
Bowman Place, MT
- Average snowfall in September: 1.18"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Bowman Place, MT
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is February (13.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Bowman Place, 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: 9h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Bowman Place, MT
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is July (18.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in September
Bowman Place, 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
Bowman Place, MT
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in September
Bowman Place, 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 months with the lowest visibility are January, February and December (5mi).
Bowman Place, Montana, USA
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