September weather forecast
Shell Valley, ND

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Weather in September

September, the first month of the autumn in Shell Valley, is still a refreshing month, with an average temperature fluctuating between 49.1°F (9.5°C) and 67.6°F (19.8°C).

Temperature

The arrival of September indicates a decrease in the average high-temperature, moving from a warm 77.9°F (25.5°C) in August to a refreshing 67.6°F (19.8°C). During the month of September, Shell Valley experiences a steady low-temperature average of 49.1°F (9.5°C).

Humidity

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

Rainfall

In Shell Valley, in September, during 11.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 110.9 rainfall days, and 17.95" (456mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 6:57 am and sunset at 8:20 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:19 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Shell Valley is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 4 in September translates into these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Frequently asked questions

What is the average September temperature?

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

How many days does it rain in September in Shell Valley?

In September, the rain falls for 11.3 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Shell Valley have in September?

In Shell Valley, North Dakota, the average day length in September is 12h and 34min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:57 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:19 pm CDT.

How many hours of sunshine does Shell Valley have in September?

In Shell Valley, the average sunshine duration in September is 8.5h.

What is the UV index reading in September?

In Shell Valley, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe 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
Shell Valley, ND

Average temperature in September - Shell Valley, 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).

Average pressure in September
Shell Valley, ND

Average pressure in September - Shell Valley, ND
  • Average pressure in September: 29.95"Hg

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

Average wind speed in September
Shell Valley, ND

Average wind speed in September - Shell Valley, 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).

Average humidity in September
Shell Valley, ND

Average humidity in September - Shell Valley, 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%).

Average rainfall in September
Shell Valley, ND

Average rainfall in September - Shell Valley, 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").

Average rainfall days in September
Shell Valley, ND

Average rainfall days in September - Shell Valley, 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).

Average snowfall in September
Shell Valley, ND

Average snowfall in September - Shell Valley, ND
  • Average snowfall in September: 0"

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

Average snowfall days in September
Shell Valley, ND

Average snowfall days in September - Shell Valley, ND
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Shell Valley, ND

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

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in September
Shell Valley, ND

Average sunshine days in September - Shell Valley, 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).

Average UV index in September
Shell Valley, ND

Average UV index in September - Shell Valley, ND
  • Average UV index in September: 4

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

Average cloud cover in September
Shell Valley, ND

Average cloud cover in September - Shell Valley, 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).

Average visibility in September
Shell Valley, ND

Average visibility in September - Shell Valley, 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).

Shell Valley, North Dakota, USA

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