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 transition into September involves a decrease in the average high-temperature, falling from 85.1°F (29.5°C) in August to a still moderately hot 75.2°F (24°C). Throughout September, the average low-temperature dips to a fresh 54.7°F (12.6°C).Humidity
The average relative humidity in September in Crow Agency is 42%.Rainfall
In September, the rain falls for 6.7 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Crow Agency, during the entire year, the rain falls for 103 days and collects up to 11.97" (304mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In Crow Agency, Montana, during the entire year, snow falls for 56.7 days and aggregates up to 25.16" (639mm) of snow.Daylight
In Crow Agency, the average length of the day in September is 12h and 31min.On the first day of September in Crow Agency, sunrise is at 6:32 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:51 pm MDT.
Sunshine
The average sunshine in September in Crow Agency is 10.6h.UV index
In Crow Agency, Montana, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Crow Agency?
What is the average humidity in September in Crow Agency?
How much does it rain in Crow Agency in September?
When does it start to snow in Crow Agency?
What is the average length of the day in September in Crow Agency?
When is the sunrise / sunset in September in Crow Agency?
How many hours of sunshine does Crow Agency have in September?
How high is the UV index in September in Crow Agency?
Average temperature in September
Crow Agency, MT
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
Crow Agency, MT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Crow Agency, MT
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Crow Agency, MT
- Average humidity in September: 42%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (38%).
Average rainfall in September
Crow Agency, MT
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is August (0.63").
Average rainfall days in September
Crow Agency, MT
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is May (13.6 days).
The month with the least rainy days is December (5.9 days).
Average snowfall in September
Crow Agency, MT
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Crow Agency, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Crow Agency, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Crow Agency, MT
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in September
Crow Agency, MT
- Average UV index in September: 5
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
Crow Agency, MT
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in September
Crow Agency, 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).
Crow Agency, Montana, USA
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