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
The unfolding of September shows an average high-temperature of a still tropical 88.5°F (31.4°C), indicating a slight variance from August's 90.9°F (32.7°C). Umatilla experiences a mean temperature of 73.2°F (22.9°C) during September nights.Heat index
The heat index value for September is computed to be a blistering 105.8°F (41°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The months with the highest humidity are July through September, with an average relative humidity of 78%.Rainfall
In Umatilla, in September, it is raining for 22.3 days, with typically 4.02" (102mm) of accumulated precipitation. In Umatilla, during the entire year, the rain falls for 193.1 days and collects up to 35.71" (907mm) of precipitation.Daylight
In September, the average length of the day is 12h and 19min.On the first day of September, sunrise is at 7:04 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the most humid month in Umatilla?
What is the average humidity in September?
How many days does it rain in September in Umatilla?
How many hours of daylight does Umatilla have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Umatilla, FL
- Average high temperature in September: 88.5°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 (67.5°F).
- Average low temperature in September: 73.2°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 (49.5°F).
Average pressure in September
Umatilla, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Umatilla, FL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
Umatilla, FL
- Average humidity in September: 78%
The months with the highest relative humidity are July, August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Umatilla, FL
- Average rainfall in September: 4.02"
The wettest month (with the highest rainfall) is July (5.91").
The driest months (with the least rainfall) are March and November (1.26").
Average rainfall days in September
Umatilla, FL
- Average rainfall days in September: 22.3 days
The month with the highest number of rainy days is July (26.9 days).
The month with the least rainy days is January (9.2 days).
Average daylight in September /
Average sunshine in September
Umatilla, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are May and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Umatilla, FL
- Average sunshine days in September: 5.7 days
The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (2.1 days).
Average UV index in September
Umatilla, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Umatilla, FL
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility in September
Umatilla, 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).
Umatilla, Florida, USA
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