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
As Altoona enters September, the average high-temperature subtly lowers from the a hot 86.9°F (30.5°C) of August to a moderately hot 79.9°F (26.6°C). In the month of September, Altoona experiences an average low-temperature of 61.5°F (16.4°C).Humidity
The average relative humidity in September is 74%.Rainfall
In Altoona, in September, during 11.7 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Altoona, during the entire year, the rain falls for 129.4 days and collects up to 27.87" (708mm) of precipitation.Snowfall
In Altoona, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:53 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:06 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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 much does it rain in September?
When it does not snow?
What is the average length of the day in September in Altoona?
When is the sunrise / sunset in September?
How many hours of sunshine does Altoona have in September?
What is the UV index reading in September?
Average temperature in September
Altoona, KS
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.8°F).
- Average low temperature in September: 61.5°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Altoona, KS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Altoona, KS
- Average wind speed in September: 8.1mph
The windiest months (with the highest average wind speed) are March and April (11.2mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Altoona, KS
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Altoona, KS
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (5.08").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Altoona, KS
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is December (5.4 days).
Average snowfall in September
Altoona, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Altoona, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.5 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
Altoona, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Altoona, KS
- Average sunshine days in September: 16 days
The month with the most sunshine days is December (23.2 days).
The month with the least sunshine days is May (13.3 days).
Average UV index in September
Altoona, 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 and December (UV index 2).
Average cloud cover in September
Altoona, KS
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are June, July and August (Cloud cover 24).
Average visibility in September
Altoona, 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).
Altoona, Kansas, USA
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