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
Jonestown marks the onset of September with an average high-temperature of a moderately hot 84.9°F (29.4°C), a subtle shift from August's 88.7°F (31.5°C). September brings with it a nighttime average temperature of 66.2°F (19°C).Heat index
For most parts of September, the heat index is calculated to be a hot 93.2°F (34°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.In the scope of the heat index, its values resonate with shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In Jonestown, the average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.05" (52mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:46 pm CDT.
Sunshine
In September, the average sunshine in Jonestown is 9.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take precautions - Protection against sunburn is recommended. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Jonestown in September?
What is the average humidity in September in Jonestown?
What is the driest 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 many hours of sunshine does Jonestown have in September?
How high is the UV index in September?
Average temperature in September
Jonestown, MS
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (35.8°F).
Average pressure in September
Jonestown, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Jonestown, MS
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Jonestown, MS
- Average humidity in September: 72%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Jonestown, MS
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is April (5.04").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Jonestown, MS
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is August (18.3 days).
The months with the least rainy days are October and November (9.6 days).
Average snowfall in September
Jonestown, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Jonestown, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jonestown, MS
- 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: 9h and 54min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Jonestown, MS
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Jonestown, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Jonestown, MS
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Jonestown, MS
- 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).
Jonestown, Mississippi, USA
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