May weather forecast
Thunder Hawk, SD

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Weather in May

May, the last month of the spring in Thunder Hawk, is an enjoyable month, with an average temperature ranging between min 46.2°F (7.9°C) and max 64.9°F (18.3°C).

Temperature

Thunder Hawk sees a rise in temperature during May, with average high-temperatures transitioning from a cool 52.3°F (11.3°C) in April to a refreshing 64.9°F (18.3°C). In Thunder Hawk, May nights witness a steady temperature drop to a frosty 46.2°F (7.9°C).

Humidity

The average relative humidity in May is 62%.

Rainfall

In Thunder Hawk, in May, it is raining for 13.8 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, in Thunder Hawk, there are 101.3 rainfall days, and 14.25" (362mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1.4 snowfall days, in May, Thunder Hawk aggregates 1.34" (34mm) of snow. In Thunder Hawk, during the entire year, snow falls for 65.8 days and aggregates up to 21.42" (544mm) of snow.

Daylight

The average length of the day in May in Thunder Hawk is 14h and 58min.
On the first day of May, sunrise is at 5:33 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:00 am and sunset at 8:30 pm MDT.

Sunshine

In May, the average sunshine in Thunder Hawk is 9.6h.

UV index

In May, the average daily maximum UV index in Thunder Hawk is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 during May translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Thunder Hawk?

In Thunder Hawk, 64.9°F (18.3°C) is the average high-temperature and 46.2°F (7.9°C) is the average low-temperature during May.

What is the average humidity in May in Thunder Hawk?

The average relative humidity in May in Thunder Hawk is 62%.

How much does it rain in Thunder Hawk in May?

In May, in Thunder Hawk, the rain falls for 13.8 days. Throughout May, 2.2" (56mm) of precipitation is accumulated.

What is the last month it snows in Thunder Hawk?

May is the last month it regularly snows in Thunder Hawk. During 1.4 snowfall days, in May, Thunder Hawk aggregates 1.34" (34mm) of snow.

How many hours of daylight does Thunder Hawk have in May?

In Thunder Hawk, the average day length in May is 14h and 58min.

What time are sunrise and sunset in May in Thunder Hawk?

In May, on the first day of the month, sunrise is at 5:33 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:00 am and sunset at 8:30 pm MDT.

How long on average sun shines in May in Thunder Hawk?

The average sunshine duration in May in Thunder Hawk is 9.6h.

What is the UV index intensity in May in Thunder Hawk?

The average daily maximum UV index in May in Thunder Hawk, South Dakota, is 4. A UV Index estimate of 3 to 5 represents a medium health risk 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
Thunder Hawk, SD

Average temperature in May - Thunder Hawk, SD
  • Average high temperature in May: 64.9°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 (25.2°F).

  • Average low temperature in May: 46.2°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 (11.7°F).

Average pressure in May
Thunder Hawk, SD

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

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in May
Thunder Hawk, SD

Average wind speed in May - Thunder Hawk, SD
  • Average wind speed in May: 11mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

Average humidity in May
Thunder Hawk, SD

Average humidity in May - Thunder Hawk, SD
  • Average humidity in May: 62%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).

Average rainfall in May
Thunder Hawk, SD

Average rainfall in May - Thunder Hawk, SD
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in May
Thunder Hawk, SD

Average rainfall days in May - Thunder Hawk, SD
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).

Average snowfall in May
Thunder Hawk, SD

Average snowfall in May - Thunder Hawk, SD
  • Average snowfall in May: 1.34"

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

Average snowfall days in May
Thunder Hawk, SD

Average snowfall days in May - Thunder Hawk, SD
  • Average snowfall days in May: 1.4 days

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Thunder Hawk, SD

Average daylight in May / Average sunshine in May - Thunder Hawk, SD
  • Average daylight in May: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in May: 9h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in May
Thunder Hawk, SD

Average sunshine days in May - Thunder Hawk, SD
  • Average sunshine days in May: 13.7 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in May
Thunder Hawk, SD

Average UV index in May - Thunder Hawk, SD
  • Average UV index in May: 4

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

Average cloud cover in May
Thunder Hawk, SD

Average cloud cover in May - Thunder Hawk, SD
  • Average cloud cover in May: 36

The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).

Average visibility in May
Thunder Hawk, SD

Average visibility in May - Thunder Hawk, 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).

Thunder Hawk, South Dakota, USA

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