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
May's onset is marked by a subtle temperature increase, moving from 75.7°F (24.3°C) in April to a still moderately hot 82.9°F (28.3°C). An average nighttime temperature of 63.5°F (17.5°C) is witnessed throughout May.Heat index
For May, the heat index is computed to be a hot 91.4°F (33°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Harriston, the average relative humidity in May is 78%.Rainfall
In Harriston, Mississippi, during May, the rain falls for 13.6 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, in Harriston, there are 162.8 rainfall days, and 34.33" (872mm) of precipitation is accumulated.Snowfall
In Harriston, Mississippi, snow does not fall in March through November.Daylight
In Harriston, the average length of the day in May is 13h and 47min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:44 pm. On the last day of May, in Harriston, sunrise is at 5:59 am and sunset at 8:04 pm CDT.
Sunshine
In Harriston, the average sunshine in May is 9.8h.UV index
The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during May translates into the following guidance:
Guard against overexposure. Protection from sun-induced harm is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is May in Harriston?
What is the average humidity in May in Harriston?
How much does it rain in Harriston in May?
When it does not snow in Harriston?
How many hours of daylight does Harriston have in May?
When is the sunrise / sunset in May in Harriston?
How many hours of sunshine does Harriston have in May?
What is the UV index intensity in May in Harriston?
Average temperature in May
Harriston, MS
- Average high temperature in May: 82.9°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 (55.4°F).
- Average low temperature in May: 63.5°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in May
Harriston, MS
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in May
Harriston, MS
- Average wind speed in May: 5.9mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in May
Harriston, MS
- Average humidity in May: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Harriston, MS
- Average rainfall in May: 2.52"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in May
Harriston, MS
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in May
Harriston, MS
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Harriston, MS
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1 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
Harriston, MS
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in May
Harriston, MS
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (9.2 days).
Average UV index in May
Harriston, MS
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
Harriston, MS
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in May
Harriston, MS
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Harriston, Mississippi, USA
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