May weather forecast
Brentford, SD

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Weather in May

May, the last month of the spring in Brentford, is an enjoyable month, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 48.2°F (9°C).

Temperature

The arrival of May signals an increase in the average high-temperature, moving from a fresh 54.1°F (12.3°C) in April to a refreshing 66.7°F (19.3°C). Throughout May, Brentford anticipates an average low-temperature of 48.2°F (9°C).

Humidity

The average relative humidity in May is 66%.

Rainfall

In Brentford, during May, the rain falls for 13 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Brentford, during the entire year, the rain falls for 97.2 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Brentford. May is the last month it regularly snows. During 0.3 snowfall days, in May, Brentford aggregates 0.08" (2mm) of snow. In Brentford, during the entire year, snow falls for 54.8 days and aggregates up to 19.13" (486mm) of snow.

Daylight

The average length of the day in May in Brentford is 14h and 53min.
On the first day of May, sunrise is at 6:20 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:13 pm CDT.

Sunshine

The average sunshine in May is 9h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Brentford, records 66.7°F (19.3°C), while the low-temperature is 48.2°F (9°C).

What is the average humidity in May?

In Brentford, the average relative humidity in May is 66%.

How many days does it rain in May?

In Brentford, in May, it is raining for 13 days, with typically 2.32" (59mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Brentford aggregates 0.08" (2mm) of snow.

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

In Brentford, the average day length in May is 14h and 53min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:20 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:13 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration in Brentford is 9h.

What is the UV index reading in May?

In Brentford, South Dakota, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from 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
Brentford, SD

Average temperature in May - Brentford, SD
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in May: 48.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in May
Brentford, SD

Average pressure in May - Brentford, SD
  • Average pressure in May: 29.92"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
Brentford, SD

Average wind speed in May - Brentford, SD
  • Average wind speed in May: 9.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in May
Brentford, SD

Average humidity in May - Brentford, SD
  • Average humidity in May: 66%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

Average rainfall in May
Brentford, SD

Average rainfall in May - Brentford, SD
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in May
Brentford, SD

Average rainfall days in May - Brentford, SD
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

Average snowfall in May
Brentford, SD

Average snowfall in May - Brentford, SD
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Brentford, SD

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

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Brentford, 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: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Brentford, SD

Average sunshine days in May - Brentford, SD
  • Average sunshine days in May: 15.7 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in May
Brentford, SD

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

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

Average cloud cover in May
Brentford, SD

Average cloud cover in May - Brentford, SD
  • Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in May
Brentford, SD

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

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

Brentford, South Dakota, USA

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