September weather forecast
Ralston, ND

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Weather in September

September, the first month of the autumn in Ralston, is still a pleasant month, with an average temperature fluctuating between 50.9°F (10.5°C) and 70.2°F (21.2°C).

Temperature

In Ralston, the average high-temperature in September decreases from a warm 80.8°F (27.1°C) in August to an agreeable 70.2°F (21.2°C). Ralston cools down to an average low-temperature of 50.9°F (10.5°C) throughout the month of September.

Humidity

The average relative humidity in September in Ralston is 56%.

Rainfall

In Ralston, during September, the rain falls for 8.6 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 89.5 rainfall days, and 13.94" (354mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of September in Ralston, sunrise is at 7:04 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:26 pm CDT.

Sunshine

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

UV index

In Ralston, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a daily UV index of 4 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What are the temperatures in Ralston in September?

During September, Ralston experiences an average high-temperature of 70.2°F (21.2°C) and a low-temperature of 50.9°F (10.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 82.4°F (28°C).

What is the average humidity in September in Ralston?

In September, the average relative humidity in Ralston is 56%.

How much does it rain in Ralston in September?

In September, the rain falls for 8.6 days. Throughout September, 1.81" (46mm) of precipitation is accumulated.

When it does not snow in Ralston?

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

Does it snow in Ralston in September?

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

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

The average day length in September is 12h and 34min.

When is the sunrise / sunset in September in Ralston?

On the first day of September, sunrise is at 7:04 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:26 pm CDT.

How long on average sun shines in September in Ralston?

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

What is the UV index reading in September in Ralston?

In September, the average daily maximum UV index in Ralston, North Dakota, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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
Ralston, ND

Average temperature in September - Ralston, ND
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (18.1°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (4.5°F).

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Average pressure in September
Ralston, ND

Average pressure in September - Ralston, ND
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Ralston, ND

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

The windiest month (with the highest average wind speed) is October (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

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Average humidity in September
Ralston, ND

Average humidity in September - Ralston, ND
  • Average humidity in September: 56%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (54%).

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Average rainfall in September
Ralston, ND

Average rainfall in September - Ralston, ND
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is June (2.52").
The driest month (with the least rainfall) is February (0.39").

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Average rainfall days in September
Ralston, ND

Average rainfall days in September - Ralston, ND
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is June (14 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall in September
Ralston, ND

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

The month with the highest snowfall is January (2.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Ralston, ND

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

The month with the highest number of snowfall days is January (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
Ralston, ND

Average daylight in September / Average sunshine in September - Ralston, ND
  • 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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).

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Average sunshine days in September
Ralston, ND

Average sunshine days in September - Ralston, ND
  • Average sunshine days in September: 19.6 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is June (13.6 days).

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Average UV index in September
Ralston, ND

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Ralston, ND

Average cloud cover in September - Ralston, ND
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in September
Ralston, ND

Average visibility in September - Ralston, 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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Ralston, North Dakota, USA

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