September weather forecastVirginia City, MT
September
Weather in September
September, the first month of the autumn in Virginia City, is still a comfortable month, with an average temperature ranging between max 63.5°F (17.5°C) and min 39.9°F (4.4°C).Temperature
A shift in the average high-temperature occurs in September, reducing from an agreeable 73°F (22.8°C) in August to a comfortable 63.5°F (17.5°C). In September, the nighttime temperature in Virginia City plummets remarkably from the daily apex to a steady average of 39.9°F (4.4°C).Humidity
The average relative humidity in September is 56%.Rainfall
In Virginia City, during September, the rain falls for 10.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in Virginia City, Montana, there are 105.7 rainfall days, and 17.99" (457mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall in Virginia City. In September, it is snowing for 3.9 days. Throughout September, 4.37" (111mm) of snow is accumulated. In Virginia City, during the entire year, snow falls for 136.1 days and aggregates up to 86.93" (2208mm) of snow.Daylight
The average length of the day in September in Virginia City, Montana, is 12h and 31min.On the first day of the month, sunrise is at 6:50 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:09 pm MDT.
Sunshine
In Virginia City, the average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September in Virginia City is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Virginia City, MT
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is December (22.3°F).
- Average low temperature in September: 39.9°F
The month with the highest average low temperature is August (46°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).
Average pressure in September
Virginia City, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Virginia City, MT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Virginia City, MT
- Average humidity in September: 56%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Virginia City, MT
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in September
Virginia City, MT
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in September
Virginia City, MT
- Average snowfall in September: 4.37"
The month with the highest snowfall is April (14.76").
The month with the least snowfall is August (0.08").
Average snowfall days in September
Virginia City, MT
- Average snowfall days in September: 3.9 days
The month with the highest number of snowfall days is April (19.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in September /
Average sunshine in September
Virginia City, MT
- Average daylight in September: 12h and 30min
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 42min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Virginia City, MT
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is April (6.9 days).
Average UV index in September
Virginia City, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Virginia City, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Virginia City, MT
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
