September weather forecast
Crystal, ND

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Weather in September

September, the first month of the autumn in Crystal, is also an agreeable month, with an average temperature fluctuating between 69.3°F (20.7°C) and 50.9°F (10.5°C).

Temperature

During Crystal's transition into September, the average high-temperature lessens, moving from a warm 79.5°F (26.4°C) in August to an agreeable 69.3°F (20.7°C). An average nighttime temperature of 50.9°F (10.5°C) is observed during September.

Humidity

The average relative humidity in September in Crystal is 62%.

Rainfall

In Crystal, North Dakota, in September, it is raining for 9.2 days, with typically 1.73" (44mm) of accumulated precipitation. In Crystal, during the entire year, the rain falls for 99.8 days and collects up to 16.46" (418mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of September, sunrise is at 6:49 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:10 pm CDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the average September temperature in Crystal?

In Crystal, 69.3°F (20.7°C) is the average high-temperature and 50.9°F (10.5°C) is the average low-temperature during September.

What is the average humidity in September in Crystal?

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

How many days does it rain in September in Crystal?

In Crystal, in September, during 9.2 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow in Crystal?

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

Does it snow in Crystal in September?

In Crystal, North Dakota, in September, it doesn't snow. In October, it regularly snows.

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

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

When are sunrise and sunset in September in Crystal?

On the first day of September, sunrise is at 6:49 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:10 pm CDT.

How many hours of sunshine does Crystal have in September?

The average sunshine duration in September in Crystal is 8.7h.

What is the UV index reading in September in Crystal?

In September, the average daily maximum UV index in Crystal, North Dakota, is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Crystal, ND

Average temperature in September - Crystal, ND
  • Average high temperature in September: 69.3°F

The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is January (14.5°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (1°F).

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Average pressure in September
Crystal, ND

Average pressure in September - Crystal, 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).

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Average wind speed in September
Crystal, ND

Average wind speed in September - Crystal, ND
  • Average wind speed in September: 9.9mph

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 (8.4mph).

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Average humidity in September
Crystal, ND

Average humidity in September - Crystal, 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
Crystal, ND

Average rainfall in September - Crystal, ND
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is February (0.51").

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Average rainfall days in September
Crystal, ND

Average rainfall days in September - Crystal, ND
  • Average rainfall days in September: 9.2 days

The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is February (2 days).

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Average snowfall in September
Crystal, ND

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

The month with the highest snowfall is December (3.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Crystal, ND

Average snowfall days in September - Crystal, ND
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (13.8 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
Crystal, ND

Average daylight in September / Average sunshine in September - Crystal, 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 24min).

  • Average sunshine in September: 8h and 4min

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 18min).

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Average sunshine days in September
Crystal, ND

Average sunshine days in September - Crystal, ND
  • Average sunshine days in September: 19 days

The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in September
Crystal, ND

Average UV index in September - Crystal, 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 and November (UV index 1).

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Average cloud cover in September
Crystal, ND

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

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in September
Crystal, ND

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

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