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
With September's advent, Dana sees an average high-temperature of a still moderately hot 74.8°F (23.8°C), subtly shifted from August's 80.1°F (26.7°C). An average low-temperature of 55.8°F (13.2°C) is recorded during the nights in September in Dana, Iowa.Humidity
In September, the average relative humidity is 75%.Rainfall
In Dana, in September, it is raining for 11.2 days, with typically 2.91" (74mm) of accumulated precipitation. Throughout the year, there are 125.7 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
In Dana, Iowa, snow does not fall in June through September.Daylight
In Dana, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:43 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September in Dana is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in Dana?
What is the average humidity in September in Dana?
How many days does it rain in September in Dana?
When it does not snow in Dana?
Does it snow in Dana in September?
What is the average length of the day in September in Dana?
When are sunrise and sunset in September in Dana?
How long on average sun shines in September in Dana?
What is the UV index intensity in September in Dana?
Average temperature in September
Dana, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°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
Dana, 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
Dana, IA
- Average wind speed in September: 8.3mph
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
Dana, IA
- Average humidity in September: 75%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Dana, IA
- Average rainfall in September: 2.91"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Dana, IA
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in September
Dana, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dana, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dana, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Dana, IA
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Dana, 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, February, October, November and December (UV index 2).
Average cloud cover in September
Dana, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in September
Dana, 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).
Dana, Iowa, USA
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