September weather forecast and climate
Plevna, MT

September, the first month of the autumn, in Plevna, is also an agreeable month, with average temperature varying between 54.1°F (12.3°C) and 72.1°F (22.3°C).

Temperature

In September, the average high-temperature drops, from a warm 81.9°F (27.7°C) in August, to an agreeable 72.1°F (22.3°C). The average low-temperature, in Plevna, is 54.1°F (12.3°C).

Humidity

In September, the average relative humidity is 48%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 109 rainfall days, and 15.12" (384mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows in Plevna, Montana. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 62.4 snowfall days, and 21.97" (558mm) of snow is accumulated.

Daylight

In September, the average length of the day in Plevna, Montana, is 12.5h.

Sunshine

In September, the average sunshine in Plevna is 10.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in September in Plevna?

The average high-temperature, in September, in Plevna, is 72.1°F (22.3°C), while the average low-temperature is 54.1°F (12.3°C).

What is the average humidity in September in Plevna?

In Plevna, the average relative humidity in September is 48%.

How much does it rain in Plevna in September?

In Plevna, during September, the rain falls for 9.5 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When does it start snowing 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.

How many hours of daylight does Plevna have in September?

In September, the average length of the day in Plevna, Montana, is 12.5h.

How many hours of sunshine does Plevna have in September?

In Plevna, the average sunshine in September is 10.2h.

What is the UV index reading in September in Plevna?

In September, the average daily maximum UV index in Plevna, Montana, is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
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"

Months with the highest atmospheric pressure are January and February (30.15").
The month with the lowest atmospheric pressure is June (29.84").

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").
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).
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: 12.5h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in September: 10.2h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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).
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).
Months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in September - Plevna, MT
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).