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
Ames notes an average high-temperature of a still warm 74.8°F (23.8°C) in September, hardly diverging from August. During September, an average low-temperature of 55.8°F (13.2°C) is observed in Ames.Humidity
In Ames, Iowa, the average relative humidity in September is 76%.Rainfall
In Ames, in September, it is raining for 11.4 days, with typically 3.03" (77mm) of accumulated precipitation. In Ames, Iowa, during the entire year, the rain falls for 130.6 days and collects up to 27.48" (698mm) of precipitation.Snowfall
June through September are months without snowfall in Ames.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:47 pm. On the last day of September, in Ames, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take precautions - Protection against sunburn is recommended. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What are the temperatures in Ames in September?
What is the average humidity in September in Ames?
How many days does it rain in September in Ames?
When it does not snow in Ames?
Does it snow in Ames in September?
How many hours of daylight does Ames have in September?
When are sunrise and sunset in September in Ames?
How many hours of sunshine does Ames have in September?
How high is the UV index in September in Ames?
Average temperature in September
Ames, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Ames, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Ames, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Ames, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Ames, IA
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Ames, IA
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Ames, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ames, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ames, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Ames, IA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in September
Ames, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Ames, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Ames, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Ames, Iowa, USA
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