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
September's weather records an average high-temperature of a still hot 88°F (31.1°C), showing little deviation from August. Graham witnesses a consistent average low-temperature of 72.1°F (22.3°C) throughout September.Heat index
In September, the heat index is computed to be a blistering 105.8°F (41°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The months with the highest humidity in Graham are August and September, with an average relative humidity of 78%.Rainfall
In Graham, during September, the rain falls for 16 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, in Graham, there are 158.6 rainfall days, and 20.79" (528mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In Graham, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:06 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:15 pm EDT.
Sunshine
The average sunshine in September in Graham is 8.4h.UV index
In Graham, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Graham in September?
What are the most humid months in Graham?
What is the average humidity in September in Graham?
How many days does it rain in September in Graham?
When it does not snow in Graham?
What is the average length of the day in September in Graham?
When is the sunrise / sunset in September in Graham?
How long on average sun shines in September in Graham?
How high is the UV index in September in Graham?
Average temperature in September
Graham, FL
- Average high temperature in September: 88°F
The warmest months (with the highest average high temperature) are July and August (90.9°F).
The month with the lowest average high temperature is January (63.9°F).
- Average low temperature in September: 72.1°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).
Average pressure in September
Graham, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Graham, FL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
Graham, FL
- Average humidity in September: 78%
The months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Graham, FL
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is August (3.03").
The driest months (with the least rainfall) are January and November (1.02").
Average rainfall days in September
Graham, FL
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in September
Graham, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Graham, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Graham, FL
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is August (7.1 days).
Average UV index in September
Graham, 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, February and December (UV index 4).
Average cloud cover in September
Graham, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is May (Cloud cover 31).
Average visibility in September
Graham, FL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
Graham, Florida, USA
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