September weather forecast and climate
Rolette, ND

Weather in September

September, the first month of the autumn, in Rolette, is also an enjoyable month, with average temperature fluctuating between 49.1°F (9.5°C) and 67.6°F (19.8°C).

Temperature

In Rolette, the average high-temperature in September drops, from a moderately hot 77.9°F (25.5°C) in August, to an enjoyable 67.6°F (19.8°C). The average low-temperature, in Rolette, North Dakota, is 49.1°F (9.5°C).

Humidity

In September, the average relative humidity is 62%.

Rainfall

In September, the rain falls for 11.3 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. In Rolette, during the entire year, the rain falls for 110.9 days and collects up to 17.95" (456mm) of precipitation.

Snowfall

June through September are months without snowfall in Rolette.

Daylight

In Rolette, the average length of the day is 12.6h.

Sunshine

In Rolette, the average sunshine is 8.5h.

UV index

In September, the average daily maximum UV index in Rolette is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in September in Rolette?

In September, the average high-temperature is 67.6°F (19.8°C), and the average low-temperature is 49.1°F (9.5°C).

What is the average humidity in September in Rolette?

The average relative humidity in September in Rolette, North Dakota, is 62%.

How many days does it rain in September in Rolette?

In Rolette, North Dakota, in September, during 11.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

Does it snow in Rolette in September?

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

When it does not snow in Rolette?

June through September are months without snowfall.

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

The average length of the day in September in Rolette, North Dakota, is 12.6h.

How many hours of sunshine does Rolette have in September?

In Rolette, North Dakota, the average sunshine in September is 8.5h.

What is the UV index reading in September in Rolette?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Rolette, ND

Average temperature in September - Rolette, ND
  • Average high temperature in September: 67.6°F

The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is January (14.2°F).

  • Average low temperature in September: 49.1°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (0.5°F).

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Average pressure in September
Rolette, ND

Average pressure in September - Rolette, ND
  • Average pressure in September: 29.95"

The month with the highest atmospheric pressure is February (30.17").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in September
Rolette, ND

Average wind speed in September - Rolette, ND
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is October (11mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in September
Rolette, ND

Average humidity in September - Rolette, ND
  • Average humidity in September: 62%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (60%).

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Average rainfall in September
Rolette, ND

Average rainfall in September - Rolette, ND
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is February (0.43").

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Average rainfall days in September
Rolette, ND

Average rainfall days in September - Rolette, ND
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2 days).

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Average snowfall in September
Rolette, ND

Average snowfall in September - Rolette, ND
  • Average snowfall in September: 0"

The month with the highest snowfall is November (4.29").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Rolette, ND

Average snowfall days in September - Rolette, ND
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (15.7 days).
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
Rolette, ND

Average daylight in September / Average sunshine in September - Rolette, ND
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in September
Rolette, ND

Average sunshine days in September - Rolette, ND
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is June (8.1 days).

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Average UV index in September
Rolette, ND

Average UV index in September - Rolette, ND
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in September
Rolette, ND

Average cloud cover in September - Rolette, ND
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in September
Rolette, ND

Average visibility in September - Rolette, ND
  • Average visibility in September: 6mi

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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