September weather forecast
Lonepine, MT

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Weather in September

September, the first month of the autumn in Lonepine, is still a comfortable month, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 41.5°F (5.3°C).

Temperature

Lonepine's transition into September involves a shift in temperature, receding from a warm 78.4°F (25.8°C) in August to an enjoyable 67.1°F (19.5°C). September witnesses a substantial contrast between the daytime highs and the average low of 41.5°F (5.3°C).

Humidity

In September, the average relative humidity is 61%.

Rainfall

In September, the rain falls for 10.2 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 129.8 rainfall days, and 16.42" (417mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 117.4 snowfall days, and 58.62" (1489mm) of snow is accumulated.

Daylight

In Lonepine, the average length of the day in September is 12h and 33min.
On the first day of September, sunrise is at 6:58 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:19 pm MDT.

Sunshine

In Lonepine, the average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the UV index of 3 transforms into the following advice:
Guard yourself - Avoiding sunburn is suggested. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.

Frequently asked questions

What are September temperatures?

In September, in Lonepine, the average high-temperature is 67.1°F (19.5°C), and the average low-temperature is 41.5°F (5.3°C).

What is the average humidity in September?

In September, the average relative humidity is 61%.

How many days does it rain in September?

In Lonepine, in September, during 10.2 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow.

What is the average length of the day in September?

The average day length in September is 12h and 33min.

When are sunrise and sunset in September in Lonepine?

On the first day of September in Lonepine, sunrise is at 6:58 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:19 pm MDT.

How many hours of sunshine does Lonepine have in September?

In September, the average sunshine duration is 9.2h.

How high is the UV index in September?

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Lonepine, MT

Average temperature in September - Lonepine, MT
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in September: 41.5°F

The month with the highest average low temperature is July (48.4°F).
The coldest months (with the lowest average low temperature) are January and December (16.2°F).

Average pressure in September
Lonepine, MT

Average pressure in September - Lonepine, MT
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Lonepine, MT

Average wind speed in September - Lonepine, MT
  • Average wind speed in September: 3.7mph

The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are August and December (3.6mph).

Average humidity in September
Lonepine, MT

Average humidity in September - Lonepine, MT
  • Average humidity in September: 61%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (52%).

Average rainfall in September
Lonepine, MT

Average rainfall in September - Lonepine, MT
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is July (0.59").

Average rainfall days in September
Lonepine, MT

Average rainfall days in September - Lonepine, MT
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in September
Lonepine, MT

Average snowfall in September - Lonepine, MT
  • Average snowfall in September: 0.2"

The month with the highest snowfall is December (12.36").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Lonepine, MT

Average snowfall days in September - Lonepine, MT
  • Average snowfall days in September: 0.4 days

The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Lonepine, MT

Average daylight in September / Average sunshine in September - Lonepine, MT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in September
Lonepine, MT

Average sunshine days in September - Lonepine, MT
  • Average sunshine days in September: 18.6 days

The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (7.1 days).

Average UV index in September
Lonepine, MT

Average UV index in September - Lonepine, MT
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in September
Lonepine, MT

Average cloud cover in September - Lonepine, MT
  • Average cloud cover in September: 25

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in September
Lonepine, MT

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

Lonepine, Montana, USA

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