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
With the onset of May, the average high-temperature subtly transitions from 75°F (23.9°C) in April to a still moderately hot 81.9°F (27.7°C). Norristown records an average nighttime low of 63.9°F (17.7°C) in May.Heat index
The heat index value for May is calculated to be a tropical 87.8°F (31°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In Norristown, the average relative humidity in May is 74%.Rainfall
In Norristown, in May, during 12.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Norristown, during the entire year, the rain falls for 136.8 days and collects up to 17.05" (433mm) of precipitation.Snowfall
In Norristown, snow does not fall in March through December.Daylight
In May, the average length of the day is 13h and 50min.On the first day of May, sunrise is at 6:42 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:32 pm EDT.
Sunshine
The average sunshine in May in Norristown is 10.3h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 7 in May translates into the following instructions:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index in Norristown?
How high is the UV index in May?
Average temperature in May
Norristown, GA
- Average high temperature in May: 81.9°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in May: 63.9°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in May
Norristown, GA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in May
Norristown, GA
- Average wind speed in May: 7mph
The windiest months (with the highest average wind speed) are February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Norristown, GA
- Average humidity in May: 74%
The months with the highest relative humidity are August and December (76%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in May
Norristown, GA
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in May
Norristown, GA
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in May
Norristown, GA
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Norristown, GA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Norristown, GA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Norristown, GA
- Average sunshine days in May: 16.8 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in May
Norristown, GA
- Average UV index in May: 7
The months with the highest UV index are May, 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
Norristown, GA
- Average cloud cover in May: 31
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in May
Norristown, GA
- 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).
Norristown, Georgia, USA
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