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
The shift from August to September is characterized by an average high-temperature of a still hot 88.2°F (31.2°C), not significantly different from the 91.4°F (33°C) of August. September sees the temperature falling to a mean low of 68.9°F (20.5°C).Heat index
For most parts of September, the heat index is appraised at a scorching 104°F (40°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
In Hillsdale, Mississippi, the average relative humidity in September is 76%.Rainfall
In Hillsdale, during September, the rain falls for 16.5 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Hillsdale, during the entire year, the rain falls for 147.6 days and collects up to 16.65" (423mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day in Hillsdale is 12h and 20min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:44 pm CDT.
Sunshine
In Hillsdale, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Hillsdale?
How many hours of daylight does Hillsdale have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Hillsdale, MS
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (57.7°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in September
Hillsdale, MS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Hillsdale, MS
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is July (4.2mph).
Average humidity in September
Hillsdale, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Hillsdale, MS
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is August (2.64").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Hillsdale, MS
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is August (20.5 days).
The month with the least rainy days is November (6.3 days).
Average snowfall in September
Hillsdale, MS
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Hillsdale, MS
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.3 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
Hillsdale, MS
- 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Hillsdale, MS
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Hillsdale, MS
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Hillsdale, MS
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Hillsdale, MS
- Average visibility in September: 5mi
The month with the highest visibility is October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, November and December (5mi).
Hillsdale, Mississippi, USA
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