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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a hot 89.2°F (31.8°C) in August to a moderately hot 82.2°F (27.9°C). The temperature lowers to an average of 61.3°F (16.3°C) during September nights.Heat index
Throughout September, the heat index is estimated at 82.4°F (28°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In Boise City, Oklahoma, the average relative humidity in September is 49%.Rainfall
In September, the rain falls for 9.4 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Boise City, during the entire year, the rain falls for 87 days and collects up to 12.32" (313mm) of precipitation.Snowfall
In Boise City, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 7:21 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 7:34 pm CDT.
Sunshine
In Boise City, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Boise City?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Boise City have in September?
How high is the UV index in September?
Average temperature in September
Boise City, OK
- Average high temperature in September: 82.2°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (46.6°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is December (28.2°F).
Average pressure in September
Boise City, OK
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in September
Boise City, OK
- Average wind speed in September: 12.1mph
The windiest month (with the highest average wind speed) is April (13.4mph).
The calmest months (with the lowest average wind speed) are January and August (10.6mph).
Average humidity in September
Boise City, OK
- Average humidity in September: 49%
The month with the highest relative humidity is December (55%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Boise City, OK
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (2.44").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Boise City, OK
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in September
Boise City, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boise City, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Boise City, 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 3min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Boise City, OK
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is December (26.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Boise City, OK
- 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
Boise City, OK
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Boise City, 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).
Boise City, Oklahoma, USA
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