September weather forecast and climate
Willow Island, NE

Weather in September

The first month of the autumn, September, is still a warm month in Willow Island, Nebraska, with average temperature ranging between max 78.6°F (25.9°C) and min 56.1°F (13.4°C).

Temperature

In Willow Island, the average high-temperature in September marginally drops, from a tropical 86.5°F (30.3°C) in August, to a warm 78.6°F (25.9°C). The average low-temperature, in Willow Island, is 56.1°F (13.4°C).

Humidity

In Willow Island, the average relative humidity is 59%.

Rainfall

In September, in Willow Island, the rain falls for 10.3 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Willow Island, there are 109.4 rainfall days, and 17.28" (439mm) of precipitation is accumulated.

Snowfall

In Willow Island snow does not fall in June through September.

Daylight

In Willow Island, the average length of the day in September is 12.4h.

Sunshine

The average sunshine in September is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Willow Island?

In Willow Island, Nebraska, in September, the average high-temperature is 78.6°F (25.9°C), and the average low-temperature is 56.1°F (13.4°C).

What is the average humidity in September in Willow Island?

In Willow Island, the average relative humidity in September is 59%.

How much does it rain in Willow Island in September?

In Willow Island, Nebraska, during September, the rain falls for 10.3 days and regularly aggregates up to 0.98" (25mm) of precipitation.

Does it snow in Willow Island in September?

In Willow Island, Nebraska, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Willow Island?

June through September are months without snowfall in Willow Island, Nebraska.

What is the average length of the day in September in Willow Island?

In Willow Island, the average length of the day in September is 12.4h.

How many hours of sunshine does Willow Island have in September?

In Willow Island, Nebraska, the average sunshine in September is 9h.

What is the UV index reading in September in Willow Island?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Willow Island, NE

Average temperature in September - Willow Island, NE
  • Average high temperature in September: 78.6°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in September
Willow Island, NE

Average pressure in September - Willow Island, NE
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in September
Willow Island, NE

Average wind speed in September - Willow Island, NE
  • Average wind speed in September: 10.3mph

The windiest month (with the highest average wind speed) is April (12.3mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).

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Average humidity in September
Willow Island, NE

Average humidity in September - Willow Island, NE
  • Average humidity in September: 59%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is October (58%).

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Average rainfall in September
Willow Island, NE

Average rainfall in September - Willow Island, NE
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in September
Willow Island, NE

Average rainfall days in September - Willow Island, NE
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in September
Willow Island, NE

Average snowfall in September - Willow Island, NE
  • Average snowfall in September: 0"

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

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Average snowfall days in September
Willow Island, NE

Average snowfall days in September - Willow Island, NE
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are February and December (6.5 days).
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
Willow Island, NE

Average daylight in September / Average sunshine in September - Willow Island, NE
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 9h

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

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Average sunshine days in September
Willow Island, NE

Average sunshine days in September - Willow Island, NE
  • Average sunshine days in September: 16.7 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in September
Willow Island, NE

Average UV index in September - Willow Island, NE
  • Average UV index in September: 5

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

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Average cloud cover in September
Willow Island, NE

Average cloud cover in September - Willow Island, NE
  • Average cloud cover in September: 22

The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 22).

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Average visibility in September
Willow Island, NE

Average visibility in September - Willow Island, NE
  • Average visibility in September: 6mi

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

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