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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a fiery hot 98.2°F (36.8°C) in August to a hot 92.5°F (33.6°C). Throughout the month of September, the average temperature dips to a moderately hot 77.2°F (25.1°C) at night.Heat index
The heat index value during September is appraised at a blisteringly hot 109.4°F (43°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', 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. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In September, the average relative humidity is 65%.Rainfall
September is the month with the most rainfall. Rain falls for 17.9 days and accumulates 2.48" (63mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In Linn, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 7:12 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:19 pm CDT.
Sunshine
In Linn, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Linn is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 7 transforms into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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 average humidity in September in Linn?
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?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Linn, TX
- Average high temperature in September: 92.5°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 (69.4°F).
- Average low temperature in September: 77.2°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in September
Linn, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in September
Linn, TX
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is May (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in September
Linn, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Linn, TX
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is September (2.48").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Linn, TX
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is September (17.9 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in September
Linn, 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
Linn, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Linn, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Linn, TX
- Average sunshine days in September: 11 days
The month with the most sunshine days is August (23.1 days).
The month with the least sunshine days is September (11 days).
Average UV index in September
Linn, TX
- Average UV index in September: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Linn, TX
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Linn, 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).
Linn, Texas, USA
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