May weather forecast
Frankfort, SD

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Weather in May

May, the last month of the spring in Frankfort, is a comfortable month, with an average temperature varying between 67.6°F (19.8°C) and 48.9°F (9.4°C).

Temperature

As April gives way to May, the average high-temperature displays an increase, moving from a refreshing 55.4°F (13°C) to a comfortable 67.6°F (19.8°C). During May, Frankfort experiences an average low-temperature of 48.9°F (9.4°C) at night.

Humidity

In Frankfort, the average relative humidity in May is 67%.

Rainfall

In May, in Frankfort, the rain falls for 13.3 days. Throughout May, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Frankfort, there are 97.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in May is 14h and 52min.
On the first day of the month, sunrise is at 6:21 am and sunset at 8:39 pm. On the last day of May, in Frankfort, sunrise is at 5:50 am and sunset at 9:11 pm CDT.

Sunshine

In Frankfort, the average sunshine in May is 9.1h.

UV index

In Frankfort, South Dakota, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What is the average May temperature in Frankfort?

May temperatures in Frankfort vary between a high-temperature of 67.6°F (19.8°C) and a low-temperature of 48.9°F (9.4°C).

What is the average humidity in May in Frankfort?

In May, the average relative humidity is 67%.

How much does it rain in Frankfort in May?

In Frankfort, during May, the rain falls for 13.3 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow in Frankfort?

May through September are months without snowfall in Frankfort, South Dakota.

Does it snow in Frankfort in May?

In May, in Frankfort, South Dakota, it doesn't snow. April is the latest month when it typically snows.

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

In May, the average day length is 14h and 52min.

When is the sunrise / sunset in May in Frankfort?

On the first day of May in Frankfort, South Dakota, sunrise is at 6:21 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 9:11 pm CDT.

How long on average sun shines in May in Frankfort?

The average sunshine duration in May is 9.1h.

What is the UV index reading in May in Frankfort?

In May, the average daily maximum UV index in Frankfort is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Frankfort, SD

Average temperature in May - Frankfort, SD
  • Average high temperature in May: 67.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in May: 48.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

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Average pressure in May
Frankfort, SD

Average pressure in May - Frankfort, 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 (29.84"Hg).

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Average wind speed in May
Frankfort, SD

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

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).

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Average humidity in May
Frankfort, SD

Average humidity in May - Frankfort, SD
  • Average humidity in May: 67%

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

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Average rainfall in May
Frankfort, SD

Average rainfall in May - Frankfort, SD
  • Average rainfall in May: 2.4"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in May
Frankfort, SD

Average rainfall days in May - Frankfort, SD
  • Average rainfall days in May: 13.3 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall in May
Frankfort, SD

Average snowfall in May - Frankfort, SD
  • Average snowfall in May: 0"

The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Frankfort, SD

Average snowfall days in May - Frankfort, SD
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Frankfort, SD

Average sunshine days in May - Frankfort, SD
  • Average sunshine days in May: 15.2 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in May
Frankfort, SD

Average UV index in May - Frankfort, 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 and February (UV index 1).

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Average cloud cover in May
Frankfort, SD

Average cloud cover in May - Frankfort, SD
  • Average cloud cover in May: 37

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 22).

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Average visibility in May
Frankfort, SD

Average visibility in May - Frankfort, 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).

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Frankfort, South Dakota, USA

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