September weather forecast
Lynch, LA

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Weather in September

The first month of the autumn, September, is still a tropical month in Lynch, Louisiana, with an average temperature ranging between min 70.3°F (21.3°C) and max 87.3°F (30.7°C).

Temperature

Lynch starts September with an average high-temperature of a still hot 87.3°F (30.7°C), hinting at a minimal fluctuation from August. In September, the recorded average low-temperature in Lynch is an agreeable 70.3°F (21.3°C).

Heat index

September's heat index is calculated to be a scorching 104°F (40°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Lynch, during September, the rain falls for 16 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 148.6 rainfall days, and 15.51" (394mm) of precipitation is accumulated.

Snowfall

In Lynch, snow does not fall in February through December.

Daylight

In Lynch, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during September translates into these guidelines:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Lynch, is 87.3°F (30.7°C) and the average low-temperature is 70.3°F (21.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 104°F (40°C).

What is the average humidity in September?

In Lynch, the average relative humidity in September is 79%.

How much does it rain in September?

In September, the rain falls for 16 days. Throughout September, 1.18" (30mm) of precipitation is accumulated.

When it does not snow?

In Lynch, snow does not fall in February through December.

How many hours of daylight does Lynch have in September?

In September, the average day length is 12h and 20min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

How long on average sun shines in September?

In Lynch, the average sunshine duration in September is 9.7h.

How high is the UV index in September?

In Lynch, 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 Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Lynch, LA

Average temperature in September - Lynch, LA
  • Average high temperature in September: 87.3°F

The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in September: 70.3°F

The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

Average pressure in September
Lynch, LA

Average pressure in September - Lynch, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

Average wind speed in September
Lynch, LA

Average wind speed in September - Lynch, LA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Lynch, LA

Average humidity in September - Lynch, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
Lynch, LA

Average rainfall in September - Lynch, LA
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is March (0.67").

Average rainfall days in September
Lynch, LA

Average rainfall days in September - Lynch, LA
  • Average rainfall days in September: 16 days

The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is November (7.1 days).

Average snowfall in September
Lynch, LA

Average snowfall in September - Lynch, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Lynch, LA

Average snowfall days in September - Lynch, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Lynch, LA

Average daylight in September / Average sunshine in September - Lynch, LA
  • 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: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Lynch, LA

Average sunshine days in September - Lynch, LA
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (7.3 days).

Average UV index in September
Lynch, LA

Average UV index in September - Lynch, LA
  • 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
Lynch, LA

Average cloud cover in September - Lynch, LA
  • Average cloud cover in September: 31

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in September
Lynch, LA

Average visibility in September - Lynch, LA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).

Lynch, Louisiana, USA

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