September weather forecast
Guymon, OK

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Weather in September

September marks the transition from summer to fall in Guymon. The temperatures slowly decrease, resulting in an average high and low of 84.4°F (29.1°C) and 63°F (17.2°C) respectively. Changes become quite apparent as the rainy days start decreasing, and the days start getting shorter. The winds maintain a steady speed helping to keep the city pleasant despite the dwindling temperatures. Sunshine hours also begin to decrease, signalling the beginning of the end of the hot season.

Temperature

With the arrival of September, Guymon notices a mild change in the average high-temperature, sliding from August's hot 91.9°F (33.3°C) to a warm 84.4°F (29.1°C). In Guymon, in September, the average low-temperature is a refreshing 63°F (17.2°C).

Heat index

The heat index value for September is appraised at a hot 86°F (30°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

In September, the average relative humidity is 50%.

Rainfall

In Guymon, in September, during 9.9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 88.2 rainfall days, and 13.39" (340mm) of precipitation is accumulated.

Snowfall

In Guymon, snow does not fall in May through September.

Daylight

In Guymon, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 7:17 am and sunset at 8:13 pm. On the last day of September, sunrise is at 7:40 am and sunset at 7:30 pm CDT.

Sunshine

In September, the average sunshine is 9.3h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

Is it hot during September?

The average high-temperature, in September, in Guymon, is 84.4°F (29.1°C), while the average low-temperature is 63°F (17.2°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in September is appraised at 86°F (30°C).

What is the average humidity in September?

In Guymon, the average relative humidity in September is 50%.

How many days does it rain in September?

In September, the rain falls for 9.9 days. Throughout September, 1.02" (26mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall in Guymon, Oklahoma.

Does it snow in September?

In Guymon, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In September, the average day length is 12h and 24min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:17 am and sunset at 8:13 pm. On the last day of the month, in Guymon, sunrise is at 7:40 am and sunset at 7:30 pm CDT.

How many hours of sunshine does Guymon have in September?

In September, the average sunshine duration is 9.3h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high 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
Guymon, OK

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

The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is December (47.7°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (72.1°F).
The coldest months (with the lowest average low temperature) are January and December (28.9°F).

Average pressure in September
Guymon, OK

Average pressure in September - Guymon, OK
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

Average wind speed in September
Guymon, OK

Average wind speed in September - Guymon, OK
  • Average wind speed in September: 12.1mph

The windiest month (with the highest average wind speed) is June (13.4mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).

Average humidity in September
Guymon, OK

Average humidity in September - Guymon, OK
  • Average humidity in September: 50%

The month with the highest relative humidity is December (56%).
The month with the lowest relative humidity is June (44%).

Average rainfall in September
Guymon, OK

Average rainfall in September - Guymon, OK
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is July (2.01").
The driest month (with the least rainfall) is November (0.35").

Average rainfall days in September
Guymon, OK

Average rainfall days in September - Guymon, OK
  • Average rainfall days in September: 9.9 days

The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (2.5 days).

Average snowfall in September
Guymon, OK

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Guymon, OK

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

The month with the highest number of snowfall days is February (4.8 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
Guymon, OK

Average daylight in September / Average sunshine in September - Guymon, 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: 9h and 2min

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

Average sunshine days in September
Guymon, OK

Average sunshine days in September - Guymon, OK
  • Average sunshine days in September: 17 days

The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is July (12.7 days).

Average UV index in September
Guymon, OK

Average UV index in September - Guymon, OK
  • 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 2).

Average cloud cover in September
Guymon, OK

Average cloud cover in September - Guymon, OK
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 26).
The month with the least cloud cover is June (Cloud cover 15).

Average visibility in September
Guymon, OK

Average visibility in September - Guymon, 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).

Guymon, Oklahoma, USA

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