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
The start of September involves a subtle temperature drop, shifting from a torrid 98.2°F (36.8°C) in August to a hot 91°F (32.8°C). Calliham, during September nights, observes an average temperature of 74.1°F (23.4°C).Heat index
For most parts of September, the heat index is appraised at an extremely hot 107.6°F (42°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
In September, the average relative humidity is 67%.Rainfall
September is the month with the most rainfall. Rain falls for 13.2 days and accumulates 1.42" (36mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In Calliham, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:12 am and sunset at 7:54 pm. On the last day of September, in Calliham, sunrise is at 7:26 am and sunset at 7:20 pm CDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Calliham, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 7 in September translates into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
What is the rainiest month?
How much does it rain 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 long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Calliham, TX
- Average high temperature in September: 91°F
The warmest month (with the highest average high temperature) is August (98.2°F).
The month with the lowest average high temperature is January (64.2°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is August (77.7°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in September
Calliham, TX
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in September
Calliham, TX
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is May (10.9mph).
The calmest month (with the lowest average wind speed) is September (7.8mph).
Average humidity in September
Calliham, TX
- Average humidity in September: 67%
The months with the highest relative humidity are March and May (71%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Calliham, TX
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is September (1.42").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Calliham, TX
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is September (13.2 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Calliham, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Calliham, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Calliham, TX
- 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Calliham, TX
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in September
Calliham, TX
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Calliham, TX
- Average cloud cover in September: 31
The months with the most cloud cover are March and December (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Calliham, 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).
Calliham, Texas, USA
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