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 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 onset of September manifests an average high-temperature of a still hot 87.3°F (30.7°C), demonstrating a minor variation from the preceding month. Nighttime temperatures consistently average a pleasant 71.4°F (21.9°C) during September.Heat index
The heat index in September is computed to be a sweltering 100.4°F (38°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Crestview, during September, the rain falls for 17.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Crestview, during the entire year, the rain falls for 171.8 days and collects up to 34.92" (887mm) of precipitation.Snowfall
In Crestview, snow does not fall in March through November.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:09 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:32 pm CDT.
Sunshine
In Crestview, the average sunshine in September is 9.3h.UV index
In Crestview, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in Crestview in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Crestview have in September?
How high is the UV index in September?
Average temperature in September
Crestview, FL
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (59.2°F).
- Average low temperature in September: 71.4°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in September
Crestview, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Crestview, FL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Crestview, FL
- Average humidity in September: 73%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Crestview, FL
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is November (1.89").
Average rainfall days in September
Crestview, FL
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (7.3 days).
Average snowfall days in September
Crestview, FL
- Average snowfall days in September: 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 September /
Average sunshine in September
Crestview, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Crestview, FL
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is August (5.6 days).
Average UV index in September
Crestview, FL
- Average UV index in September: 6
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 September
Crestview, FL
- Average cloud cover in September: 27
The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in September
Crestview, 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).
Crestview, Florida, USA
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