May weather forecast
Andover, SD

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Weather in May

The last month of the spring, May, is an enjoyable month in Andover, South Dakota, with an average temperature ranging between max 64°F (17.8°C) and min 46.6°F (8.1°C).

Temperature

Andover in May sees a temperature change, with average high-temperatures moving from a cool 51.1°F (10.6°C) in April to a refreshing 64°F (17.8°C). May generally records an average low-temperature of 46.6°F (8.1°C).

Humidity

In Andover, South Dakota, the average relative humidity in May is 70%.

Rainfall

In Andover, during May, the rain falls for 16.5 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, there are 112.9 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Andover. During 0.8 snowfall days, in May, Andover aggregates 0.12" (3mm) of snow. In Andover, South Dakota, during the entire year, snow falls for 68.4 days and aggregates up to 23.74" (603mm) of snow.

Daylight

In Andover, the average length of the day in May is 14h and 55min.
On the first day of May in Andover, South Dakota, sunrise is at 6:18 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 9:12 pm CDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

The average daily maximum UV index in May in Andover, South Dakota, is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, an average UV index of 4 transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Andover in May?

May temperatures vary between a high-temperature of 64°F (17.8°C) and a low-temperature of 46.6°F (8.1°C).

What is the average humidity in May in Andover?

In Andover, the average relative humidity in May is 70%.

How many days does it rain in May in Andover?

In May, in Andover, South Dakota, the rain falls for 16.5 days. Throughout May, 2.72" (69mm) of precipitation is accumulated.

What is the last month it snows in Andover?

May is the last month it regularly snows. During 0.8 snowfall days, in May, Andover aggregates 0.12" (3mm) of snow.

What is the average length of the day in May in Andover?

The average day length in May in Andover is 14h and 55min.

When are sunrise and sunset in May in Andover?

On the first day of May, sunrise is at 6:18 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 9:12 pm CDT.

How long on average sun shines in May in Andover?

In Andover, the average sunshine duration in May is 8.7h.

What is the UV index reading in May in Andover?

The average daily maximum UV index in May in Andover, South Dakota, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
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
Andover, SD

Average temperature in May - Andover, SD
  • Average high temperature in May: 64°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.9°F).

  • Average low temperature in May: 46.6°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).

Average pressure in May
Andover, SD

Average pressure in May - Andover, SD
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in May
Andover, SD

Average wind speed in May - Andover, SD
  • Average wind speed in May: 10.5mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).

Average humidity in May
Andover, SD

Average humidity in May - Andover, SD
  • Average humidity in May: 70%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (66%).

Average rainfall in May
Andover, SD

Average rainfall in May - Andover, SD
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (0.63").

Average rainfall days in May
Andover, SD

Average rainfall days in May - Andover, SD
  • Average rainfall days in May: 16.5 days

The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).

Average snowfall in May
Andover, SD

Average snowfall in May - Andover, SD
  • Average snowfall in May: 0.12"

The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Andover, SD

Average snowfall days in May - Andover, SD
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Andover, SD
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • 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: 3h and 12min).

Average sunshine days in May
Andover, SD

Average sunshine days in May - Andover, SD
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (10.4 days).

Average UV index in May
Andover, SD

Average UV index in May - Andover, SD
  • Average UV index in May: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in May
Andover, SD

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

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in May
Andover, SD

Average visibility in May - Andover, SD
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

Andover, South Dakota, USA

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