Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September notes an average high-temperature of a moderately hot 81.5°F (27.5°C), revealing a mild distinction from the 86.4°F (30.2°C) in August. During September, the nighttime temperature in Grifton averages to a refreshing 65.1°F (18.4°C).Heat index
In September, the heat index is computed to be a hot 87.8°F (31°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 80%.Rainfall
In Grifton, in September, it is raining for 13.4 days, with typically 3.11" (79mm) of accumulated precipitation. In Grifton, during the entire year, the rain falls for 158.9 days and collects up to 29.21" (742mm) of precipitation.Snowfall
April through November are months without snowfall in Grifton.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:54 pm EDT.
Sunshine
In September, the average sunshine in Grifton, North Carolina, is 8.8h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Around midday, solar radiation is most harmful; hence, exposure should be limited. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grifton in September?
What are the most humid months in Grifton?
What is the average humidity in September in Grifton?
How many days does it rain in September in Grifton?
When it does not snow in Grifton?
What is the average length of the day in September in Grifton?
What time are sunrise and sunset in September in Grifton?
How many hours of sunshine does Grifton have in September?
What is the UV index reading in September in Grifton?
Average temperature in September
Grifton, NC
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in September
Grifton, NC
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Grifton, NC
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Grifton, NC
- Average humidity in September: 80%
The months with the highest relative humidity are August and September (80%).
The month with the lowest relative humidity is January (74%).
Average rainfall in September
Grifton, NC
- Average rainfall in September: 3.11"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Grifton, NC
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in September
Grifton, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Grifton, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Grifton, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Grifton, NC
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Grifton, NC
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Grifton, NC
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 43).
The months with the least cloud cover are June and October (Cloud cover 34).
Average visibility in September
Grifton, NC
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Grifton, North Carolina, USA
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