September weather forecastPalmer, TX
September
Weather in September
The first month of the autumn, September, is still a tropical month in Palmer, Texas, with an average temperature ranging between min 69.8°F (21°C) and max 87.8°F (31°C).Temperature
In September, the average high-temperature marginally decreases from a sweltering 95.5°F (35.3°C) in August to a tropical 87.8°F (31°C). Palmer's nighttime temperature during September is consistently averaged at a pleasant 69.8°F (21°C).Heat index
Throughout September, the heat index is estimated at a fiery hot 96.8°F (36°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up 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 evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
In September, the average relative humidity in Palmer is 65%.Rainfall
In Palmer, Texas, in September, during 11.5 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Palmer, during the entire year, the rain falls for 101.5 days and collects up to 11.3" (287mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:12 pm CDT.
Sunshine
In Palmer, the average sunshine in September is 8.4h.UV index
In Palmer, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. 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
Average temperature in September
Palmer, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Palmer, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Palmer, TX
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).
Average humidity in September
Palmer, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Palmer, TX
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Palmer, TX
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is January (5.1 days).
Average snowfall in September
Palmer, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Palmer, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Palmer, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Palmer, TX
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is September (15.5 days).
Average UV index in September
Palmer, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Palmer, TX
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Palmer, 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).





