September weather forecast
Moorhead, MT

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Weather in September

The first month of the autumn, September, is still a warm month in Moorhead, Montana, with an average temperature fluctuating between 74.1°F (23.4°C) and 52.7°F (11.5°C).

Temperature

September's onset brings a reduction in the average high-temperature, from 83.7°F (28.7°C) in August to a still moderately hot 74.1°F (23.4°C). Throughout September, Moorhead's nights cool down to an average of 52.7°F (11.5°C).

Humidity

The average relative humidity in September in Moorhead is 44%.

Rainfall

In Moorhead, in September, it is raining for 8.6 days, with typically 0.83" (21mm) of accumulated precipitation. In Moorhead, during the entire year, the rain falls for 127.6 days and collects up to 14.25" (362mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows in Moorhead. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 65.3 snowfall days, and 28.82" (732mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 6:26 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:45 pm MDT.

Sunshine

In September, the average sunshine in Moorhead is 10.8h.

UV index

In September, the average daily maximum UV index in Moorhead is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the UV index of 4 transforms into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Moorhead in September?

In September, the average high-temperature and low-temperature are 74.1°F (23.4°C) and 52.7°F (11.5°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 82.4°F (28°C).

What is the average humidity in September in Moorhead?

In Moorhead, the average relative humidity in September is 44%.

How much does it rain in Moorhead in September?

In Moorhead, in September, during 8.6 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When does it start snowing in Moorhead?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow.

What is the average length of the day in September in Moorhead?

In September, the average day length is 12h and 31min.

When is the sunrise / sunset in September in Moorhead?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:40 pm. On the last day of the month, in Moorhead, Montana, sunrise is at 7:01 am and sunset at 6:45 pm MDT.

How many hours of sunshine does Moorhead have in September?

In September, the average sunshine duration is 10.8h.

What is the UV index reading in September in Moorhead?

The average daily maximum UV index in September in Moorhead, Montana, is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Moorhead, MT

Average temperature in September - Moorhead, MT
  • Average high temperature in September: 74.1°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest months (with the lowest average low temperature) are January and February (16.2°F).

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Average pressure in September
Moorhead, MT

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Moorhead, MT

Average wind speed in September - Moorhead, MT
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and December (6.8mph).

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Average humidity in September
Moorhead, MT

Average humidity in September - Moorhead, MT
  • Average humidity in September: 44%

The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in September
Moorhead, MT

Average rainfall in September - Moorhead, MT
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (0.67").

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Average rainfall days in September
Moorhead, MT

Average rainfall days in September - Moorhead, MT
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in September
Moorhead, MT

Average snowfall in September - Moorhead, MT
  • Average snowfall in September: 0.12"

The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Moorhead, MT

Average snowfall days in September - Moorhead, MT
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

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: 10h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

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Average sunshine days in September
Moorhead, MT

Average sunshine days in September - Moorhead, MT
  • Average sunshine days in September: 18.2 days

The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).

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Average UV index in September
Moorhead, MT

Average UV index in September - Moorhead, 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, February, March, November and December (UV index 2).

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Average cloud cover in September
Moorhead, MT

Average cloud cover in September - Moorhead, MT
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in September
Moorhead, MT

Average visibility in September - Moorhead, 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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Moorhead, Montana, USA

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