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
September's arrival aligns with a minor decrease in average high-temperatures, from August's tropical 90.9°F (32.7°C) to a moderately hot 82.4°F (28°C). Griffith witnesses an average low-temperature of 63°F (17.2°C) throughout the month of September.Heat index
September's heat index is evaluated at 84.2°F (29°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The most humid month is September, with an average relative humidity of 54%.Rainfall
September is the month with the most rainfall. Rain falls for 9.6 days and accumulates 1.54" (39mm) of precipitation.Snowfall
In Griffith, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 7:26 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 7:37 pm CDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
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 exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the most humid month?
What is the average humidity in September?
What is the rainiest month?
How many days does it rain in September?
When it does not snow?
Does it snow in Griffith in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Griffith?
How many hours of sunshine does Griffith have in September?
What is the UV index intensity in September?
Average temperature in September
Griffith, TX
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is June (91.2°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Griffith, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Griffith, TX
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Griffith, TX
- Average humidity in September: 54%
The month with the highest relative humidity is September (54%).
The month with the lowest relative humidity is April (33%).
Average rainfall in September
Griffith, TX
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is September (1.54").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Griffith, TX
- Average rainfall days in September: 9.6 days
The months with the highest number of rainy days are August and September (9.6 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in September
Griffith, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Griffith, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Griffith, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Griffith, TX
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is January (26.2 days).
The month with the least sunshine days is September (18.5 days).
Average UV index in September
Griffith, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Griffith, TX
- Average cloud cover in September: 20
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in September
Griffith, TX
- 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).
Griffith, Texas, USA
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