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
As Saint Jo, Texas, enters September, the average high-temperature subtly lowers from the a hot 94.6°F (34.8°C) of August to a warm 85.8°F (29.9°C). Throughout September, the average low-temperature records at a comfortable 67.8°F (19.9°C).Heat index
September's average heat index is appraised at a tropical 93.2°F (34°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
The average relative humidity in September in Saint Jo is 65%.Rainfall
In September, in Saint Jo, the rain falls for 12.5 days. Throughout September, 2.83" (72mm) of precipitation is accumulated. Throughout the year, in Saint Jo, there are 128.7 rainfall days, and 26.1" (663mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Saint Jo.Daylight
In Saint Jo, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:55 pm. On the last day of September, in Saint Jo, sunrise is at 7:24 am and sunset at 7:15 pm CDT.
Sunshine
The average sunshine in September in Saint Jo, Texas, is 8.4h.UV index
In Saint Jo, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Saint Jo in September?
What is the average humidity in September in Saint Jo?
How much does it rain in Saint Jo in September?
When it does not snow in Saint Jo?
What is the average length of the day in September in Saint Jo?
When are sunrise and sunset in September in Saint Jo?
How long on average sun shines in September in Saint Jo?
What is the UV index intensity in September in Saint Jo?
Average temperature in September
Saint Jo, TX
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 67.8°F
The months with the highest average low temperature are July and August (73.9°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Saint Jo, 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 (29.89"Hg).
Average wind speed in September
Saint Jo, TX
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are March and April (10.7mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).
Average humidity in September
Saint Jo, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Saint Jo, TX
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Saint Jo, TX
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Saint Jo, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Saint Jo, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint Jo, 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: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Saint Jo, TX
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in September
Saint Jo, 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
Saint Jo, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Saint Jo, 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).
Saint Jo, Texas, USA
Weather forecast for your location
2. Allow the app to use your location