Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
The onset of March marks a slight increase in the average high-temperature, moving from a moderate 57°F (13.9°C) in February to an enjoyable 64°F (17.8°C). Throughout the month of March, the average temperature dips to a frosty 46.2°F (7.9°C) at night.Humidity
The average relative humidity in March is 72%.Rainfall
In Johnston, during March, the rain falls for 13.2 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 149.8 rainfall days, and 28.58" (726mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. March is the last month it regularly snows. During 0.2 snowfall days, in March, Johnston aggregates 0.16" (4mm) of snow. Throughout the year, there are 1.2 snowfall days, and 1.02" (26mm) of snow is accumulated.Daylight
The average length of the day in March is 12h and 0min.On the first day of March, sunrise is at 6:54 am and sunset at 6:24 pm EST. On the last day of the month, sunrise is at 7:14 am and sunset at 7:47 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.
Sunshine
In March, the average sunshine is 7.5h.UV index
In Johnston, the average daily maximum UV index in March is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 4 in March translates into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average March temperature?
What is the average humidity in March in Johnston?
How much does it rain in March?
What is the last month it snows?
What is the average length of the day in March?
When is the sunrise / sunset in March?
When does Daylight Saving Time (DST) start in March?
How many hours of sunshine does Johnston have in March?
What is the UV index reading in March?
Average temperature in March
Johnston, SC
- Average high temperature in March: 64°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.7°F).
- Average low temperature in March: 46.2°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in March
Johnston, SC
- Average pressure in March: 30.09"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in March
Johnston, SC
- Average wind speed in March: 8mph
The windiest months (with the highest average wind speed) are February and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in March
Johnston, SC
- Average humidity in March: 72%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in March
Johnston, SC
- Average rainfall in March: 2.24"
The wettest month (with the highest rainfall) is December (3.03").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in March
Johnston, SC
- Average rainfall days in March: 13.2 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in March
Johnston, SC
- Average snowfall in March: 0.16"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in March
Johnston, SC
- Average snowfall days in March: 0.2 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
Johnston, SC
- Average daylight in March: 12h 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 March: 7h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in March
Johnston, SC
- Average sunshine days in March: 15.8 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in March
Johnston, SC
- Average UV index in March: 4
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in March
Johnston, SC
- Average cloud cover in March: 38
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in March
Johnston, SC
- Average visibility in March: 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).
Johnston, South Carolina, USA
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