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 is characterized by a slight reduction in average high-temperature, easing from a very hot 95.7°F (35.4°C) in August to a tropical 88.7°F (31.5°C). In September, Calvert encounters an average low-temperature of 70.5°F (21.4°C) during the night.Heat index
September's average heat index is calculated to be a fiery hot 102.2°F (39°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Know that the heat index computations account for shaded terrains and slight winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In September, the average relative humidity is 69%.Rainfall
In Calvert, during September, the rain falls for 14.9 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Calvert, during the entire year, the rain falls for 145.3 days and collects up to 28.35" (720mm) of precipitation.Snowfall
In Calvert, snow does not fall in March through December.Daylight
In September, the average length of the day in Calvert is 12h and 20min.On the first day of September, sunrise is at 7:03 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm CDT.
Sunshine
In Calvert, Texas, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Calvert in September?
What is the average humidity in September in Calvert?
How much does it rain in Calvert in September?
When it does not snow in Calvert?
How many hours of daylight does Calvert have in September?
When are sunrise and sunset in September in Calvert?
How long on average sun shines in September in Calvert?
What is the UV index reading in September in Calvert?
Average temperature in September
Calvert, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (57.6°F).
- Average low temperature in September: 70.5°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Calvert, 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 (29.92"Hg).
Average wind speed in September
Calvert, TX
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in September
Calvert, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Calvert, TX
- Average rainfall in September: 2.56"
The wettest months (with the highest rainfall) are May and October (3.27").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in September
Calvert, TX
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is September (14.9 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
Calvert, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Calvert, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 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
Calvert, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Calvert, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in September
Calvert, 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 3).
Average cloud cover in September
Calvert, TX
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Calvert, 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).
Calvert, Texas, USA
Weather forecast for your location
2. Allow the app to use your location