September weather forecast
Culbertson, MT

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Weather in September

September, the first month of the autumn in Culbertson, is also an agreeable month, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 72.3°F (22.4°C).

Temperature

A change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 82.8°F (28.2°C) to an agreeable 72.3°F (22.4°C). Culbertson's temperature in September lowers to a consistent average of 54.3°F (12.4°C) during the nights.

Humidity

The average relative humidity in September in Culbertson is 48%.

Rainfall

In Culbertson, in September, during 7.5 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Culbertson, during the entire year, the rain falls for 85.7 days and collects up to 8.5" (216mm) of precipitation.

Snowfall

June through September are months without snowfall in Culbertson.

Daylight

The average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:38 pm. On the last day of September, in Culbertson, sunrise is at 6:57 am and sunset at 6:38 pm MDT.

Sunshine

In September, the average sunshine is 10h.

UV index

The average daily maximum UV index in September in Culbertson is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 4 in September leads to these recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What are September temperatures in Culbertson?

An average high-temperature, in September, in Culbertson, is 72.3°F (22.4°C) and the average low-temperature is 54.3°F (12.4°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 82.4°F (28°C).

What is the average humidity in September in Culbertson?

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

How much does it rain in Culbertson in September?

In September, in Culbertson, the rain falls for 7.5 days. Throughout September, 1.06" (27mm) of precipitation is accumulated.

When it does not snow in Culbertson?

June through September are months without snowfall in Culbertson, Montana.

Does it snow in Culbertson in September?

In Culbertson, Montana, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Culbertson have in September?

In September, the average day length is 12h and 34min.

When is the sunrise / sunset in September in Culbertson?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:38 pm MDT.

How long on average sun shines in September in Culbertson?

The average sunshine duration in September in Culbertson, Montana, is 10h.

What is the UV index intensity in September in Culbertson?

In Culbertson, Montana, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's 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
Culbertson, MT

Average temperature in September - Culbertson, MT
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in September: 54.3°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in September
Culbertson, MT

Average pressure in September - Culbertson, MT
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in September
Culbertson, MT

Average wind speed in September - Culbertson, MT
  • Average wind speed in September: 10.3mph

The windiest months (with the highest average wind speed) are April and October (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).

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Average humidity in September
Culbertson, MT

Average humidity in September - Culbertson, MT
  • Average humidity in September: 48%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (45%).

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Average rainfall in September
Culbertson, MT

Average rainfall in September - Culbertson, MT
  • Average rainfall in September: 1.06"

The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in September
Culbertson, MT

Average rainfall days in September - Culbertson, MT
  • Average rainfall days in September: 7.5 days

The month with the highest number of rainy days is June (11.4 days).
The months with the least rainy days are January and February (3.2 days).

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Average snowfall in September
Culbertson, MT

Average snowfall in September - Culbertson, MT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.77").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Culbertson, MT

Average snowfall days in September - Culbertson, MT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Culbertson, MT
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in September
Culbertson, MT

Average sunshine days in September - Culbertson, MT
  • Average sunshine days in September: 20.7 days

The month with the most sunshine days is September (20.7 days).
The month with the least sunshine days is April (15.8 days).

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Average UV index in September
Culbertson, MT

Average UV index in September - Culbertson, 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 February (UV index 1).

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Average cloud cover in September
Culbertson, MT

Average cloud cover in September - Culbertson, MT
  • Average cloud cover in September: 24

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 18).

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Average visibility in September
Culbertson, MT

Average visibility in September - Culbertson, 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).

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Culbertson, Montana, USA

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