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
September welcomes an average high-temperature of a still moderately hot 75.2°F (24°C), not much different from the preceding month. During September, the nighttime temperature in Donahue averages to a refreshing 55.8°F (13.2°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Donahue, Iowa, during September, the rain falls for 12.5 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 151.1 rainfall days, and 31.14" (791mm) of precipitation is accumulated.Snowfall
In Donahue, Iowa, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:29 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm CDT.
Sunshine
In September, the average sunshine in Donahue is 9.4h.UV index
In September, the average daily maximum UV index in Donahue is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the temperature in September in Donahue?
What is the average humidity in September in Donahue?
How much does it rain in Donahue in September?
When it does not snow in Donahue?
Does it snow in Donahue in September?
How many hours of daylight does Donahue have in September?
What time are sunrise and sunset in September in Donahue?
How many hours of sunshine does Donahue have in September?
How high is the UV index in September in Donahue?
Average temperature in September
Donahue, IA
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.7°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 (15.3°F).
Average pressure in September
Donahue, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Donahue, IA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in September
Donahue, 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 (72%).
Average rainfall in September
Donahue, IA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in September
Donahue, IA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Donahue, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Donahue, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Donahue, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Donahue, IA
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (17.4 days).
The months with the least sunshine days are May and June (8.3 days).
Average UV index in September
Donahue, IA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Donahue, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Donahue, IA
- 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).
Donahue, Iowa, USA
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