September weather forecast
Lamar, OK

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Lamar, Oklahoma, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 84.4°F (29.1°C).

Temperature

A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a tropical 91.9°F (33.3°C) to a moderately hot 84.4°F (29.1°C). Lamar's nights in September experience an average temperature drop to a comfortable 64.6°F (18.1°C).

Heat index

September's mean heat index is evaluated at a tropical 91.4°F (33°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In September, the average relative humidity in Lamar is 69%.

Rainfall

In Lamar, in September, during 13 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Lamar, there are 133 rainfall days, and 29.72" (755mm) of precipitation is accumulated.

Snowfall

In Lamar, snow does not fall in May through October.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September in Lamar, sunrise is at 6:57 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:09 pm CDT.

Sunshine

In September, the average sunshine in Lamar is 8.8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

How hot is it in Lamar in September?

September temperatures in Lamar, Oklahoma, vary between a high-temperature of 84.4°F (29.1°C) and a low-temperature of 64.6°F (18.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 91.4°F (33°C).

What is the average humidity in September in Lamar?

In Lamar, Oklahoma, the average relative humidity in September is 69%.

How much does it rain in Lamar in September?

In September, in Lamar, Oklahoma, the rain falls for 13 days. Throughout September, 2.68" (68mm) of precipitation is accumulated.

When it does not snow in Lamar?

May through October are months without snowfall in Lamar, Oklahoma.

What is the average length of the day in September in Lamar?

In Lamar, the average day length in September is 12h and 23min.

When are sunrise and sunset in September in Lamar?

On the first day of September in Lamar, Oklahoma, sunrise is at 6:57 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:09 pm CDT.

How long on average sun shines in September in Lamar?

In Lamar, Oklahoma, the average sunshine duration in September is 8.8h.

How high is the UV index in September in Lamar?

In September, the average daily maximum UV index in Lamar, Oklahoma, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from 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
Lamar, OK

Average temperature in September - Lamar, OK
  • Average high temperature in September: 84.4°F

The warmest months (with the highest average high temperature) are July and August (91.9°F).
The month with the lowest average high temperature is January (48.6°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

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Average pressure in September
Lamar, OK

Average pressure in September - Lamar, OK
  • Average pressure in September: 29.98"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).

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Average wind speed in September
Lamar, OK

Average wind speed in September - Lamar, OK
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

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Average humidity in September
Lamar, OK

Average humidity in September - Lamar, OK
  • Average humidity in September: 69%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in September
Lamar, OK

Average rainfall in September - Lamar, OK
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days in September
Lamar, OK

Average rainfall days in September - Lamar, OK
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in September
Lamar, OK

Average snowfall in September - Lamar, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Lamar, OK

Average snowfall days in September - Lamar, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Lamar, OK

Average daylight in September / Average sunshine in September - Lamar, OK
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in September
Lamar, OK

Average sunshine days in September - Lamar, OK
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (13.6 days).

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Average UV index in September
Lamar, OK

Average UV index in September - Lamar, OK
  • Average UV index in September: 5

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).

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Average cloud cover in September
Lamar, OK

Average cloud cover in September - Lamar, OK
  • Average cloud cover in September: 27

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in September
Lamar, OK

Average visibility in September - Lamar, OK
  • 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).

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Lamar, Oklahoma, USA

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