September weather forecast
Hallett, OK

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Weather in September

The first month of the autumn, September, is still a warm month in Hallett, Oklahoma, with an average temperature fluctuating between 83.3°F (28.5°C) and 63.7°F (17.6°C).

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's hot 90.7°F (32.6°C) to a moderately hot 83.3°F (28.5°C). Hallett experiences an average low-temperature of 63.7°F (17.6°C) in month of September.

Heat index

September's heat index is calculated to be a hot 89.6°F (32°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. 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. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

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

Rainfall

In Hallett, in September, it is raining for 12.1 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 128.9 rainfall days, and 27.72" (704mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Hallett, the average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:58 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm CDT.

Sunshine

In Hallett, the average sunshine in September is 8.6h.

UV index

In Hallett, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during September translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. It's recommended to limit sun exposure when its radiation is at its peak during midday. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

How hot is September in Hallett?

The average high-temperature and low-temperature during September are 83.3°F (28.5°C) and 63.7°F (17.6°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in September?

In September, the average relative humidity is 69%.

How many days does it rain in September?

In Hallett, in September, during 12.1 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

The average day length in September in Hallett is 12h and 24min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:58 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm CDT.

How long on average sun shines in September?

In Hallett, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
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
Hallett, OK

Average temperature in September - Hallett, OK
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 63.7°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

Average pressure in September
Hallett, OK

Average pressure in September - Hallett, 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 (29.88"Hg).

Average wind speed in September
Hallett, OK

Average wind speed in September - Hallett, OK
  • Average wind speed in September: 8mph

The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.6mph).

Average humidity in September
Hallett, OK

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

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and October (66%).

Average rainfall in September
Hallett, OK

Average rainfall in September - Hallett, OK
  • Average rainfall in September: 3.31"

The wettest month (with the highest rainfall) is May (4.92").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in September
Hallett, OK

Average rainfall days in September - Hallett, OK
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in September
Hallett, OK

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

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

Average snowfall days in September
Hallett, OK

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

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Hallett, OK

Average sunshine days in September - Hallett, OK
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is January (23 days).
The month with the least sunshine days is May (13.5 days).

Average UV index in September
Hallett, OK

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

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 2).

Average cloud cover in September
Hallett, OK

Average cloud cover in September - Hallett, 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 21).

Average visibility in September
Hallett, OK

Average visibility in September - Hallett, 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).

Hallett, Oklahoma, USA

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