May weather forecastSouth Sioux City, NE
May
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
The transition to May introduces an increase in the average high-temperature, shifting from a moderate 58.6°F (14.8°C) in April to a pleasant 70°F (21.1°C). South Sioux City cools down to an average low-temperature of 52.5°F (11.4°C) throughout the month of May.Humidity
In May, the average relative humidity 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. In South Sioux City, during the entire year, the rain falls for 102.3 days and collects up to 12.91" (328mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
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 South Sioux City, the average sunshine in May is 8.9h.UV index
In South Sioux City, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. It's recommended to limit sun exposure when its radiation is at its peak during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in May /
Average sunshine in May
South Sioux City, NE
- Average daylight in May: 14h and 36min
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 54min
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).
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).
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).
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).
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).
