September weather forecastPlevna, MT
September
Weather in September
September, the first month of the autumn in Plevna, is still a pleasant month, with an average temperature fluctuating between 54.1°F (12.3°C) and 72.1°F (22.3°C).Temperature
The start of September comes with a reduction in the average high-temperature, receding from a warm 81.9°F (27.7°C) in August to a pleasant 72.1°F (22.3°C). Throughout the month of September, Plevna sees a steady low-temperature average of 54.1°F (12.3°C).Humidity
In Plevna, Montana, the average relative humidity in September is 48%.Rainfall
In September, in Plevna, the rain falls for 9.5 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. In Plevna, during the entire year, the rain falls for 109 days and collects up to 15.12" (384mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Plevna. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Plevna, during the entire year, snow falls for 62.4 days and aggregates up to 21.97" (558mm) of snow.Daylight
The average length of the day in September in Plevna is 12h and 32min.On the first day of September in Plevna, sunrise is at 6:19 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:39 pm MDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Be vigilant - Suggestions to stave off sun damage are provided. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Plevna, MT
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Plevna, MT
- Average pressure in September: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Plevna, MT
- Average wind speed in September: 10.9mph
The windiest months (with the highest average wind speed) are April and October (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (10.1mph).
Average humidity in September
Plevna, MT
- Average humidity in September: 48%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Plevna, MT
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is May (2.6").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in September
Plevna, MT
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in September
Plevna, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Plevna, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Plevna, MT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Plevna, MT
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in September
Plevna, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Plevna, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in September
Plevna, 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).
