September weather forecast
Costin, NE

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Weather in September

September, the first month of the autumn in Costin, is still a warm month, with an average temperature ranging between min 54.1°F (12.3°C) and max 77.5°F (25.3°C).

Temperature

With the onset of September, Costin's average high-temperature slightly adjusts, moderately receding from August's moderately hot 85.5°F (29.7°C) to a still warm 77.5°F (25.3°C). A significant drop from the day's peak to an average low-temperature of 54.1°F (12.3°C) is noted during the nights in September.

Humidity

August and September, with an average relative humidity of 47%, are the least humid months.

Rainfall

In Costin, in September, during 8.6 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 110.2 rainfall days, and 14.8" (376mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 39.7 snowfall days, and 17.36" (441mm) of snow is accumulated.

Daylight

The average length of the day in September in Costin is 12h and 28min.
On the first day of September, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm MDT.

Sunshine

In Costin, the average sunshine in September is 10.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Costin in September?

An average high-temperature, in September, in Costin, is 77.5°F (25.3°C) and the average low-temperature is 54.1°F (12.3°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the least humid month in Costin?

August and September, with an average relative humidity of 47%, are the least humid months in Costin, Nebraska.

What is the average humidity in September in Costin?

The average relative humidity in September in Costin, Nebraska, is 47%.

How many days does it rain in September in Costin?

In September, the rain falls for 8.6 days. Throughout September, 0.83" (21mm) of precipitation is accumulated.

When does it start snowing in Costin?

September is the first month it typically snows in Costin, Nebraska. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Costin have in September?

In Costin, Nebraska, the average day length in September is 12h and 28min.

When is the sunrise / sunset in September in Costin?

On the first day of September in Costin, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm MDT.

How long on average sun shines in September in Costin?

The average sunshine duration in September in Costin, Nebraska, is 10.5h.

What is the UV index reading in September in Costin?

In Costin, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Costin, NE

Average temperature in September - Costin, NE
  • Average high temperature in September: 77.5°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (35.8°F).

  • Average low temperature in September: 54.1°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in September
Costin, NE

Average pressure in September - Costin, NE
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Costin, NE

Average wind speed in September - Costin, NE
  • Average wind speed in September: 9.9mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average humidity in September
Costin, NE

Average humidity in September - Costin, NE
  • Average humidity in September: 47%

The month with the highest relative humidity is January (69%).
The months with the lowest relative humidity are August and September (47%).

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Average rainfall in September
Costin, NE

Average rainfall in September - Costin, NE
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in September
Costin, NE

Average rainfall days in September - Costin, NE
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is December (3.5 days).

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Average snowfall in September
Costin, NE

Average snowfall in September - Costin, NE
  • Average snowfall in September: 0.08"

The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Costin, NE

Average snowfall days in September - Costin, NE
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (8.8 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
Costin, NE

Average daylight in September / Average sunshine in September - Costin, NE
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 10h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).

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Average sunshine days in September
Costin, NE

Average sunshine days in September - Costin, NE
  • Average sunshine days in September: 17.7 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (11.9 days).

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Average UV index in September
Costin, NE

Average UV index in September - Costin, NE
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Costin, NE

Average cloud cover in September - Costin, NE
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in September
Costin, NE

Average visibility in September - Costin, NE
  • Average visibility in September: 6mi

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

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Costin, Nebraska, USA

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