May weather forecast
Brandon, SD

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Weather in May

May's weather in Brandon, South Dakota, signals the onset of summer. Bright, sunlit days bring warmth to the region, reflecting off the city’s many water bodies. An increase in daylight hours facilitates residents in engaging in outdoor activities. The city records a noticeable increase in precipitation, amounting to 2.8" (71mm) of rainfall over 16.6 days. With May's weather transitioning into June, Brandon’s residents prepare for the city's hottest period of the year.

Temperature

May's arrival signals an increase in average high-temperatures, moving from April's 55.4°F (13°C) to a still refreshing 67.5°F (19.7°C). In the month of May, an average of 50.4°F (10.2°C) marks the low-temperature.

Humidity

In Brandon, the average relative humidity in May is 69%.

Rainfall

In May, the rain falls for 16.6 days. Throughout May, 2.8" (71mm) of precipitation is accumulated. In Brandon, during the entire year, the rain falls for 112.2 days and collects up to 20.67" (525mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Brandon aggregates 0.16" (4mm) of snow. Throughout the year, in Brandon, there are 42.1 snowfall days, and 18.94" (481mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 44min.
On the first day of the month, sunrise is at 6:17 am and sunset at 8:29 pm. On the last day of May, sunrise is at 5:47 am and sunset at 9:00 pm CDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

In Brandon, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Brandon in May?

Brandon in May has an average high-temperature of 67.5°F (19.7°C) and an average low-temperature of 50.4°F (10.2°C).

What is the average humidity in May?

In May, the average relative humidity is 69%.

How many days does it rain in May?

In Brandon, during May, the rain falls for 16.6 days and regularly aggregates up to 2.8" (71mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Brandon aggregates 0.16" (4mm) of snow.

How many hours of daylight does Brandon have in May?

The average day length in May is 14h and 44min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:17 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 9:00 pm CDT.

How many hours of sunshine does Brandon have in May?

In May, the average sunshine duration is 8.6h.

How high is the UV index in May?

In Brandon, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe 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 May
Brandon, SD

Average temperature in May - Brandon, SD
  • Average high temperature in May: 67.5°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in May: 50.4°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

Average pressure in May
Brandon, SD

Average pressure in May - Brandon, SD
  • Average pressure in May: 29.92"Hg

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

Average wind speed in May
Brandon, SD

Average wind speed in May - Brandon, SD
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).

Average humidity in May
Brandon, SD

Average humidity in May - Brandon, SD
  • Average humidity in May: 69%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).

Average rainfall in May
Brandon, SD

Average rainfall in May - Brandon, SD
  • Average rainfall in May: 2.8"

The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is November (0.63").

Average rainfall days in May
Brandon, SD

Average rainfall days in May - Brandon, SD
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.2 days).

Average snowfall in May
Brandon, SD

Average snowfall in May - Brandon, SD
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Brandon, SD

Average snowfall days in May - Brandon, SD
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Brandon, SD

Average daylight in May / Average sunshine in May - Brandon, SD
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 4min

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 0min).

Average sunshine days in May
Brandon, SD

Average sunshine days in May - Brandon, SD
  • Average sunshine days in May: 13.1 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (10.7 days).

Average UV index in May
Brandon, SD

Average UV index in May - Brandon, SD
  • Average UV index in May: 5

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

Average cloud cover in May
Brandon, SD

Average cloud cover in May - Brandon, SD
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in May
Brandon, SD

Average visibility in May - Brandon, SD
  • 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).

Brandon, South Dakota, USA

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