Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September comes with a drop in the average high-temperature, falling from August's torrid 95.5°F (35.3°C) to a tropical 86.2°F (30.1°C). During September, Geronimo consistently records a temperature low averaging a comfortable 67.5°F (19.7°C).Heat index
For September, the heat index is calculated to be a tropical 91.4°F (33°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.The standards for the heat index are set for locations in shade and under light breezes. 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 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In Geronimo, the average relative humidity in September is 61%.Rainfall
In Geronimo, in September, it is raining for 10.6 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 89.4 rainfall days, and 14.17" (360mm) of precipitation is accumulated.Snowfall
In Geronimo, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:18 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Geronimo, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September in Geronimo?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Geronimo?
When is the sunrise / sunset in September?
How many hours of sunshine does Geronimo have in September?
What is the UV index reading in September?
Average temperature in September
Geronimo, OK
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is July (95.7°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in September: 67.5°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Geronimo, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Geronimo, OK
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in September
Geronimo, OK
- Average humidity in September: 61%
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Geronimo, OK
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in September
Geronimo, OK
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is December (3.2 days).
Average snowfall in September
Geronimo, OK
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Geronimo, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Geronimo, OK
- 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Geronimo, OK
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is January (26.7 days).
The month with the least sunshine days is May (15.5 days).
Average UV index in September
Geronimo, 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
Geronimo, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Geronimo, 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).
Geronimo, Oklahoma, USA
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