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 corresponds with a reduction in the average high-temperature, down from August's warm 82.6°F (28.1°C) to a pleasant 71.2°F (21.8°C). Throughout September, the temperature tends to fall to a consistent average low of 54.9°F (12.7°C).Humidity
In Cohagen, the average relative humidity in September is 44%.Rainfall
In Cohagen, in September, it is raining for 8.7 days, with typically 1.1" (28mm) of accumulated precipitation. In Cohagen, during the entire year, the rain falls for 104.8 days and collects up to 13.03" (331mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Cohagen. September is the first month it typically snows in Cohagen. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Cohagen, during the entire year, snow falls for 58.4 days and aggregates up to 21.1" (536mm) of snow.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:45 pm. On the last day of September, in Cohagen, sunrise is at 7:05 am and sunset at 6:47 pm MDT.
Sunshine
In Cohagen, the average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What is the usual temperature for Cohagen in September?
What is the average humidity in September in Cohagen?
How many days does it rain in September in Cohagen?
When does it start to snow in Cohagen?
How many hours of daylight does Cohagen have in September?
When are sunrise and sunset in September in Cohagen?
How long on average sun shines in September in Cohagen?
How high is the UV index in September in Cohagen?
Average temperature in September
Cohagen, MT
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Cohagen, 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
Cohagen, MT
- Average wind speed in September: 10.5mph
The windiest month (with the highest average wind speed) is April (12mph).
The calmest month (with the lowest average wind speed) is February (9.9mph).
Average humidity in September
Cohagen, MT
- Average humidity in September: 44%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Cohagen, MT
- Average rainfall in September: 1.1"
The wettest months (with the highest rainfall) are May and June (1.89").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in September
Cohagen, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Cohagen, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is December (4.45").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Cohagen, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Cohagen, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Cohagen, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Cohagen, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Cohagen, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in September
Cohagen, MT
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Cohagen, Montana, USA
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