September weather forecast
Lake Hamilton, AR

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Weather in September

September, the first month of the autumn in Lake Hamilton, is also a moderately hot month, with an average temperature varying between 63.7°F (17.6°C) and 84.9°F (29.4°C).

Temperature

With the onset of September, Lake Hamilton experiences a modest temperature adjustment, with the average high-temperature gently receding from a hot 91°F (32.8°C) in August to a warm 84.9°F (29.4°C). An average temperature of 63.7°F (17.6°C) is recorded during the nights in September.

Heat index

Throughout September, the heat index is estimated at a tropical 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

In September, the average relative humidity is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

April through October are months without snowfall in Lake Hamilton.

Daylight

In Lake Hamilton, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:46 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:57 pm CDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

How hot does it get in September?

The average high-temperature and low-temperature during September are 84.9°F (29.4°C) and 63.7°F (17.6°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in September is estimated at 93.2°F (34°C).

What is the average humidity in September in Lake Hamilton?

In Lake Hamilton, the average relative humidity in September is 73%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 1.93" (49mm) of precipitation.

How much does it rain in September?

In Lake Hamilton, in September, it is raining for 11.5 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Lake Hamilton have in September?

The average day length in September is 12h and 23min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:46 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:57 pm CDT.

How many hours of sunshine does Lake Hamilton have in September?

In September, the average sunshine duration is 9.3h.

What is the UV index reading in September?

In Lake Hamilton, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium 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
Lake Hamilton, AR

Average temperature in September - Lake Hamilton, AR
  • Average high temperature in September: 84.9°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (49.3°F).

  • Average low temperature in September: 63.7°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September
Lake Hamilton, AR

Average pressure in September - Lake Hamilton, AR
  • 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 (29.94"Hg).

Average wind speed in September
Lake Hamilton, AR

Average wind speed in September - Lake Hamilton, AR
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Lake Hamilton, AR

Average humidity in September - Lake Hamilton, AR
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Lake Hamilton, AR

Average rainfall in September - Lake Hamilton, AR
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September
Lake Hamilton, AR

Average rainfall days in September - Lake Hamilton, AR
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is January (9.2 days).

Average snowfall in September
Lake Hamilton, AR

Average snowfall in September - Lake Hamilton, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Lake Hamilton, AR

Average snowfall days in September - Lake Hamilton, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 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
Lake Hamilton, AR

Average daylight in September / Average sunshine in September - Lake Hamilton, AR
  • 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Lake Hamilton, AR

Average sunshine days in September - Lake Hamilton, AR
  • Average sunshine days in September: 16.8 days

The months with the most sunshine days are January and October (19.4 days).
The month with the least sunshine days is August (13.5 days).

Average UV index in September
Lake Hamilton, AR

Average UV index in September - Lake Hamilton, AR
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Lake Hamilton, AR

Average cloud cover in September - Lake Hamilton, AR
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).

Average visibility in September
Lake Hamilton, AR

Average visibility in September - Lake Hamilton, AR
  • Average visibility in September: 6mi

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

Lake Hamilton, Arkansas, USA

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