May weather forecast
Florence, SC

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The red bridge in the Snow Winter Forest area, in Florence, South Carolina
The red bridge in the Snow Winter Forest area, in Florence, South Carolina

Weather in May

Stepping into May, Florence leans more heavily into spring, distanced from the cooler temperatures of April. Enjoying extended daylight hours fused into the mix, the weather favors longer outdoor experiences. This period also heralds increased rainfall, a steep jump from that observed in the previous month. The rise in temperature generates a positive response in humidity levels reflecting a magnified tropical feel. Peak sunshine hours are recorded in May, reaching up to 9.9 hours of sunlight.

Temperature

May brings a slight rise in Florence's average high-temperature, moving from an agreeable 72.5°F (22.5°C) in April to a moderately hot 79.7°F (26.5°C). An average low-temperature of 62.6°F (17°C) is recorded in the month of May in Florence.

Humidity

With an average relative humidity of 78%, May is the most humid month in Florence.

Rainfall

In Florence, in May, it is raining for 17 days, with typically 3.7" (94mm) of accumulated precipitation. Throughout the year, there are 168.6 rainfall days, and 33.82" (859mm) of precipitation is accumulated.

Snowfall

In Florence, snow does not fall in April through October.

Daylight

The average length of the day in May is 13h and 58min.
On the first day of May, sunrise is at 6:28 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:25 pm EDT.

Sunshine

In May, the average sunshine is 9.9h.

UV index

In Florence, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 6 in May translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What are May temperatures in Florence?

The high-temperature in Florence during May is 79.7°F (26.5°C) and the low-temperature is 62.6°F (17°C).

What is the most humid month in Florence?

May is the most humid month, with an average relative humidity of 78%.

What is the average humidity in May in Florence?

In May, the average relative humidity in Florence, South Carolina, is 78%.

How many days does it rain in May in Florence?

In Florence, in May, during 17 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.

When it does not snow in Florence?

In Florence, South Carolina, snow does not fall in April through October.

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

In Florence, the average day length in May is 13h and 58min.

When is the sunrise / sunset in May in Florence?

On the first day of May in Florence, sunrise is at 6:28 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:25 pm EDT.

How long on average sun shines in May in Florence?

The average sunshine duration in May in Florence is 9.9h.

What is the UV index intensity in May in Florence?

In Florence, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Florence, SC

Average temperature in May - Florence, SC
  • Average high temperature in May: 79.7°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in May: 62.6°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (37°F).

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Average pressure in May
Florence, SC

Average pressure in May - Florence, SC
  • Average pressure in May: 30.02"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in May
Florence, SC

Average wind speed in May - Florence, SC
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Florence, SC

Average humidity in May - Florence, SC
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).

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Average rainfall in May
Florence, SC

Average rainfall in May - Florence, SC
  • Average rainfall in May: 3.7"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.65").

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Average rainfall days in May
Florence, SC

Average rainfall days in May - Florence, SC
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in May
Florence, SC

Average snowfall in May - Florence, SC
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Florence, SC

Average snowfall days in May - Florence, SC
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Florence, SC

Average daylight in May / Average sunshine in May - Florence, SC
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in May
Florence, SC

Average sunshine days in May - Florence, SC
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (8.1 days).

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Average UV index in May
Florence, SC

Average UV index in May - Florence, SC
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in May
Florence, SC

Average cloud cover in May - Florence, SC
  • Average cloud cover in May: 36

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).

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Average visibility in May
Florence, SC

Average visibility in May - Florence, SC
  • 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).

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Florence, South Carolina, USA

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