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 September, Hayfield experiences a minor shift in meteorological conditions with average high-temperatures marked at a pleasant 72.1°F (22.3°C), closely mirroring the climate in August. During September, the average low-temperature in Hayfield is a fresh 53.6°F (12°C).Humidity
In Hayfield, Iowa, the average relative humidity in September is 77%.Rainfall
In Hayfield, Iowa, during September, the rain falls for 12.5 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 136.2 rainfall days, and 25.39" (645mm) of precipitation is accumulated.Snowfall
In Hayfield, snow does not fall in June through September.Daylight
The average length of the day in September in Hayfield is 12h and 29min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:49 pm. On the last day of September, in Hayfield, Iowa, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
In Hayfield, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Hayfield is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 in September translates into these instructions:
Take precautions - Protection against sun damage is advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the average September temperature in Hayfield?
What is the average humidity in September in Hayfield?
How much does it rain in Hayfield in September?
When it does not snow in Hayfield?
Does it snow in Hayfield in September?
How many hours of daylight does Hayfield have in September?
When is the sunrise / sunset in September in Hayfield?
How many hours of sunshine does Hayfield have in September?
What is the UV index intensity in September in Hayfield?
Average temperature in September
Hayfield, IA
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Hayfield, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Hayfield, IA
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in September
Hayfield, IA
- Average humidity in September: 77%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Hayfield, IA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Hayfield, IA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Hayfield, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hayfield, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hayfield, 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 6min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Hayfield, IA
- Average sunshine days in September: 15.1 days
The months with the most sunshine days are October and November (17.4 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in September
Hayfield, 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 December (UV index 1).
Average cloud cover in September
Hayfield, IA
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Hayfield, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Hayfield, Iowa, USA
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