September weather forecast
Hayfield, IA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Hayfield, Iowa, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 53.6°F (12°C).

Temperature

The initiation of September sees an average high-temperature of a pleasant 72.1°F (22.3°C), showing minor variations from the previous month. Throughout September, a steady low-temperature average of 53.6°F (12°C) is noted.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In September, the rain falls for 12.5 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Hayfield, 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 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, sunrise is at 7:11 am and sunset at 6:57 pm CDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What is the average September temperature?

An average high-temperature, in September, in Hayfield, is 72.1°F (22.3°C) and the average low-temperature is 53.6°F (12°C).

What is the average humidity in September?

The average relative humidity in September is 77%.

How many days does it rain in September?

In September, the rain falls for 12.5 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Hayfield, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Hayfield have in September?

In September, the average day length is 12h and 29min.

When are sunrise and sunset in September in Hayfield?

In September, on the first day of the month, sunrise is at 6:39 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:57 pm CDT.

How many hours of sunshine does Hayfield have in September?

In September, the average sunshine duration is 9.1h.

How high is the UV index in September?

In Hayfield, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Hayfield, IA

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 - 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 - 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 - 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 - 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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