Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Jefferson's weather in May shows a minor rise in the average high-temperature, moving slightly up from April's pleasant 71.6°F (22°C) to a warm 79.3°F (26.3°C). Jefferson experiences an average low-temperature of 61.3°F (16.3°C) in month of May.Humidity
The months with the highest humidity in Jefferson are May and December, with an average relative humidity of 75%.Rainfall
In Jefferson, in May, during 16.7 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Jefferson, during the entire year, the rain falls for 166.4 days and collects up to 33.7" (856mm) of precipitation.Snowfall
April through October are months without snowfall in Jefferson.Daylight
In Jefferson, the average length of the day in May is 13h and 59min.On the first day of May in Jefferson, sunrise is at 6:30 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:29 pm EDT.
Sunshine
In Jefferson, the average sunshine in May is 9.8h.UV index
In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Jefferson?
What is the most humid month in Jefferson?
What is the average humidity in May in Jefferson?
How many days does it rain in May in Jefferson?
When it does not snow in Jefferson?
How many hours of daylight does Jefferson have in May?
When is the sunrise / sunset in May in Jefferson?
How long on average sun shines in May in Jefferson?
What is the UV index intensity in May in Jefferson?
Average temperature in May
Jefferson, SC
- Average high temperature in May: 79.3°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in May: 61.3°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in May
Jefferson, SC
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in May
Jefferson, SC
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Jefferson, SC
- Average humidity in May: 75%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are January, March, July and November (71%).
Average rainfall in May
Jefferson, SC
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in May
Jefferson, SC
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in May
Jefferson, SC
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Jefferson, SC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Jefferson, 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).
Average sunshine days in May
Jefferson, SC
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in May
Jefferson, 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).
Average cloud cover in May
Jefferson, SC
- Average cloud cover in May: 35
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Jefferson, 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).
Jefferson, South Carolina, USA
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