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's onset brings a slight change in high-temperatures, falling from a moderately hot 79.9°F (26.6°C) in August to an agreeable 68.9°F (20.5°C). September brings an average low-temperature of 50.7°F (10.4°C) to Virden.Humidity
In September, the average relative humidity in Virden is 46%.Rainfall
In Virden, in September, it is raining for 6.5 days, with typically 0.59" (15mm) of accumulated precipitation. In Virden, during the entire year, the rain falls for 84.2 days and collects up to 9.29" (236mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.9 snowfall days, it receives 0.63" (16mm) of snow. In Virden, during the entire year, snow falls for 53.7 days and aggregates up to 20.47" (520mm) of snow.Daylight
In September, the average length of the day in Virden is 12h and 34min.On the first day of September, sunrise is at 6:46 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:07 pm MDT.
Sunshine
The average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What is the usual temperature for Virden in September?
What is the average humidity in September in Virden?
How much does it rain in Virden in September?
When does it start to snow in Virden?
What is the average length of the day in September in Virden?
When is the sunrise / sunset in September in Virden?
How long on average sun shines in September in Virden?
How high is the UV index in September in Virden?
Average temperature in September
Virden, MT
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is December (15.4°F).
Average pressure in September
Virden, MT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Virden, MT
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Virden, MT
- Average humidity in September: 46%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Virden, MT
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in September
Virden, MT
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Virden, MT
- Average snowfall in September: 0.63"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Virden, MT
- Average snowfall days in September: 0.9 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Virden, MT
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Virden, MT
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is September (22.2 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in September
Virden, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Virden, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Virden, 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).
Virden, Montana, USA
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