May weather forecast
South Sioux City, NE

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Weather in May

May brings a refreshing break from the past months and announces the onset of summer in South Sioux City. A rise occurs in daytime and nighttime temperatures, with highs and lows now reaching 70°F (21.1°C) and 52.5°F (11.4°C). The weather indicates a transformation into summer with increased daylight and reduced snowfall, a common theme for this time of the year. The city now sees blossoming flowers and vibrant greenery unfolding, a consistent soundtrack to the summer season. By the end of May, a visit to one of the city's beaches or parks would be most desirable.

Temperature

An upsurge in temperatures occurs in South Sioux City as April gives way to May, with average highs shifting from a moderate 58.6°F (14.8°C) to a pleasant 70°F (21.1°C). During the nights in May, an average low-temperature of 52.5°F (11.4°C) is observed.

Humidity

The average relative humidity in May is 70%.

Rainfall

In South Sioux City, during May, the rain falls for 13.5 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, in South Sioux City, Nebraska, there are 102.3 rainfall days, and 12.91" (328mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In South Sioux City, the average length of the day in May is 14h and 38min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:25 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:55 pm CDT.

Sunshine

In May, the average sunshine is 8.9h.

UV index

In May, the average daily maximum UV index in South Sioux City is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum UV index of 5 in May translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the temperature in May in South Sioux City?

In May, in South Sioux City, the average high-temperature is 70°F (21.1°C), and the average low-temperature is 52.5°F (11.4°C).

What is the average humidity in May in South Sioux City?

In May, the average relative humidity in South Sioux City, Nebraska, is 70%.

How much does it rain in South Sioux City in May?

In South Sioux City, Nebraska, in May, it is raining for 13.5 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in South Sioux City?

In South Sioux City, Nebraska, snow does not fall in May through September.

Does it snow in South Sioux City in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in South Sioux City?

In South Sioux City, Nebraska, the average day length in May is 14h and 38min.

What time are sunrise and sunset in May in South Sioux City?

In May, on the first day of the month, sunrise is at 6:19 am and sunset at 8:25 pm. On the last day of the month, in South Sioux City, Nebraska, sunrise is at 5:51 am and sunset at 8:55 pm CDT.

How long on average sun shines in May in South Sioux City?

The average sunshine duration in May in South Sioux City, Nebraska, is 8.9h.

What is the UV index reading in May in South Sioux City?

The average daily maximum UV index in May in South Sioux City, Nebraska, is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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 May
South Sioux City, NE

Average temperature in May - South Sioux City, NE
  • Average high temperature in May: 70°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in May: 52.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in May
South Sioux City, NE

Average pressure in May - South Sioux City, NE
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in May
South Sioux City, NE

Average wind speed in May - South Sioux City, NE
  • Average wind speed in May: 9.4mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

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Average humidity in May
South Sioux City, NE

Average humidity in May - South Sioux City, NE
  • Average humidity in May: 70%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (65%).

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Average rainfall in May
South Sioux City, NE

Average rainfall in May - South Sioux City, NE
  • Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.39").

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Average rainfall days in May
South Sioux City, NE

Average rainfall days in May - South Sioux City, NE
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (2.6 days).

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Average snowfall in May
South Sioux City, NE

Average snowfall in May - South Sioux City, NE
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
South Sioux City, NE

Average snowfall days in May - South Sioux City, NE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
South Sioux City, NE

Average daylight in May / Average sunshine in May - South Sioux City, NE
  • Average daylight in May: 14h and 4min

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 6min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in May
South Sioux City, NE

Average sunshine days in May - South Sioux City, NE
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (13.1 days).

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Average UV index in May
South Sioux City, NE

Average UV index in May - South Sioux City, NE
  • Average UV index in May: 5

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

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Average cloud cover in May
South Sioux City, NE

Average cloud cover in May - South Sioux City, NE
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in May
South Sioux City, NE

Average visibility in May - South Sioux City, NE
  • Average visibility in May: 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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South Sioux City, Nebraska, USA

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