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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's tropical 89.6°F (32°C) to a warm 81.5°F (27.5°C). In September, Holyrood experiences a temperature dip to an average of 61.3°F (16.3°C) at night.Heat index
For September, the heat index is estimated at 84.2°F (29°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Understand that the heat index values take into account shaded locations and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In Holyrood, the average relative humidity in September is 64%.Rainfall
In Holyrood, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 91.6 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Holyrood, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:03 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:17 pm CDT.
Sunshine
In Holyrood, Kansas, the average sunshine in September is 8.9h.UV index
In Holyrood, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September in Holyrood?
When it does not snow?
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 Holyrood have in September?
How high is the UV index in September?
Average temperature in September
Holyrood, KS
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Holyrood, KS
- 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 (29.85"Hg).
Average wind speed in September
Holyrood, KS
- Average wind speed in September: 10.4mph
The windiest month (with the highest average wind speed) is April (12.5mph).
The calmest month (with the lowest average wind speed) is August (9.2mph).
Average humidity in September
Holyrood, KS
- Average humidity in September: 64%
The months with the highest relative humidity are May and December (69%).
The month with the lowest relative humidity is July (59%).
Average rainfall in September
Holyrood, KS
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in September
Holyrood, KS
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Holyrood, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Holyrood, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Holyrood, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Holyrood, KS
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Holyrood, KS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Holyrood, KS
- Average cloud cover in September: 24
The months with the most cloud cover are February and March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Holyrood, KS
- 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).
Holyrood, Kansas, USA
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