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 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
During September, the average high-temperature is a still tropical 88.3°F (31.3°C), maintaining a close resemblance to that of the preceding month. In Hopewell, the September nights cool down to an average low of 73.9°F (23.3°C).Heat index
The heat index in September is calculated to be a blisteringly hot 105.8°F (41°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
September is the most humid month, with an average relative humidity of 78%.Rainfall
In September, the rain falls for 23 days. Throughout September, 4.45" (113mm) of precipitation is accumulated. In Hopewell, during the entire year, the rain falls for 192.2 days and collects up to 37.91" (963mm) of precipitation.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:15 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 7 during September leads to these advisories:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Hopewell have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Hopewell have in September?
When is the highest UV index?
How high is the UV index in September?
Average temperature in September
Hopewell, FL
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (68.9°F).
- Average low temperature in September: 73.9°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (51.8°F).
Average pressure in September
Hopewell, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Hopewell, FL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Hopewell, FL
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are March and May (71%).
Average rainfall in September
Hopewell, FL
- Average rainfall in September: 4.45"
The wettest month (with the highest rainfall) is August (6.93").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in September
Hopewell, FL
- Average rainfall days in September: 23 days
The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (8.8 days).
Average daylight in September /
Average sunshine in September
Hopewell, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Hopewell, FL
- Average sunshine days in September: 5.1 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.7 days).
Average UV index in September
Hopewell, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Hopewell, FL
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in September
Hopewell, FL
- Average visibility in September: 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).
Hopewell, Florida, USA
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