September weather forecast
Thompson, ND

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Weather in September

The first month of the autumn, September, is also an agreeable month in Thompson, North Dakota, with an average temperature fluctuating between 51.6°F (10.9°C) and 70.7°F (21.5°C).

Temperature

The shift from August to September involves a decrease in the average high-temperature, dropping from a warm 80.6°F (27°C) to an agreeable 70.7°F (21.5°C). September nights are marked by an average low-temperature of 51.6°F (10.9°C).

Humidity

In September, the average relative humidity in Thompson is 62%.

Rainfall

In Thompson, in September, it is raining for 7.7 days, with typically 0.91" (23mm) of accumulated precipitation. In Thompson, during the entire year, the rain falls for 80.3 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

June through September are months without snowfall in Thompson.

Daylight

The average length of the day in September in Thompson is 12h and 33min.
On the first day of the month, sunrise is at 6:47 am and sunset at 8:08 pm. On the last day of September, in Thompson, North Dakota, sunrise is at 7:27 am and sunset at 7:09 pm CDT.

Sunshine

In Thompson, North Dakota, the average sunshine in September is 8.6h.

UV index

In Thompson, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 4 during September leads to these instructions:
Take precautions - Protection against skin and eye damage is obliged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What is the usual temperature for Thompson in September?

The average high-temperature and low-temperature during September are 70.7°F (21.5°C) and 51.6°F (10.9°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is estimated at 82.4°F (28°C).

What is the average humidity in September in Thompson?

In September, the average relative humidity in Thompson, North Dakota, is 62%.

How many days does it rain in September in Thompson?

In Thompson, during September, the rain falls for 7.7 days and regularly aggregates up to 0.91" (23mm) of precipitation.

When it does not snow in Thompson?

In Thompson, snow does not fall in June through September.

Does it snow in Thompson in September?

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

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

In September, the average day length in Thompson is 12h and 33min.

When is the sunrise / sunset in September in Thompson?

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:09 pm CDT.

How many hours of sunshine does Thompson have in September?

In Thompson, the average sunshine duration in September is 8.6h.

What is the UV index reading in September in Thompson?

The average daily maximum UV index in September in Thompson, North Dakota, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
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
Thompson, ND

Average temperature in September - Thompson, ND
  • Average high temperature in September: 70.7°F

The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is January (15.3°F).

  • Average low temperature in September: 51.6°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).

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Average pressure in September
Thompson, ND

Average pressure in September - Thompson, ND
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in September
Thompson, ND

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

The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in September
Thompson, ND

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

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (60%).

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Average rainfall in September
Thompson, ND

Average rainfall in September - Thompson, ND
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in September
Thompson, ND

Average rainfall days in September - Thompson, ND
  • Average rainfall days in September: 7.7 days

The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is January (0.8 days).

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Average snowfall in September
Thompson, ND

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

The month with the highest snowfall is December (2.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Thompson, ND

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

The month with the highest number of snowfall days is December (11.7 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
Thompson, ND

Average daylight in September / Average sunshine in September - Thompson, ND
  • Average daylight in September: 12h and 4min

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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in September
Thompson, ND

Average sunshine days in September - Thompson, ND
  • Average sunshine days in September: 21.4 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in September
Thompson, ND

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

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).

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Average cloud cover in September
Thompson, ND

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

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in September
Thompson, ND

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

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

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Thompson, North Dakota, USA

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