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
In the transition to September, Ashton observes a minor drop in the average high-temperature, shifting from a warm 79.3°F (26.3°C) in August to a still moderately hot 73.6°F (23.1°C). Ashton throughout September, experiences an average nighttime temperature of 53.8°F (12.1°C).Humidity
In September, the average relative humidity in Ashton is 72%.Rainfall
In Ashton, in September, during 11.9 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Ashton, during the entire year, the rain falls for 128.1 days and collects up to 24.17" (614mm) of precipitation.Snowfall
In Ashton, snow does not fall in June through September.Daylight
In Ashton, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:48 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:05 pm CDT.
Sunshine
In September, the average sunshine in Ashton is 9h.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 rays for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the usual temperature for Ashton in September?
What is the average humidity in September in Ashton?
How many days does it rain in September in Ashton?
When it does not snow in Ashton?
Does it snow in Ashton in September?
How many hours of daylight does Ashton have in September?
When are sunrise and sunset in September in Ashton?
How long on average sun shines in September in Ashton?
What is the UV index reading in September in Ashton?
Average temperature in September
Ashton, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Ashton, IA
- Average pressure in September: 29.99"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
Ashton, IA
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Ashton, IA
- Average humidity in September: 72%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Ashton, IA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Ashton, IA
- Average rainfall days in September: 11.9 days
The months with the highest number of rainy days are May and June (17.8 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Ashton, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ashton, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ashton, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Ashton, IA
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Ashton, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Ashton, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Ashton, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Ashton, Iowa, USA
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