September weather forecast
Worthington, IA

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Weather in September

September, the first month of the autumn in Worthington, is still a pleasant month, with an average temperature ranging between min 53.2°F (11.8°C) and max 72.5°F (22.5°C).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a moderately hot 77.9°F (25.5°C) in August to a pleasant 72.5°F (22.5°C). Worthington experiences a consistent average temperature of 53.2°F (11.8°C) throughout the nights in September.

Humidity

The average relative humidity in September is 80%.

Rainfall

In Worthington, in September, it is raining for 12.5 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 150.8 rainfall days, and 32.4" (823mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September, sunrise is at 6:30 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:47 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In Worthington, Iowa, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What is the temperature in September in Worthington?

Worthington in September has an average high-temperature of 72.5°F (22.5°C) and an average low-temperature of 53.2°F (11.8°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

How many days does it rain in September?

In September, the rain falls for 12.5 days. Throughout September, 2.87" (73mm) of precipitation is accumulated.

When it does not snow?

In Worthington, snow does not fall in May through September.

Does it snow in September?

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

How many hours of daylight does Worthington have in September?

In September, the average day length is 12h and 28min.

When is the sunrise / sunset in September in Worthington?

On the first day of September, sunrise is at 6:30 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:47 pm CDT.

How many hours of sunshine does Worthington have in September?

In Worthington, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September?

In Worthington, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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
Worthington, IA

Average temperature in September - Worthington, IA
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in September
Worthington, IA

Average pressure in September - Worthington, 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
Worthington, IA

Average wind speed in September - Worthington, IA
  • Average wind speed in September: 8mph

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 (7mph).

Average humidity in September
Worthington, IA

Average humidity in September - Worthington, IA
  • Average humidity in September: 80%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (76%).

Average rainfall in September
Worthington, IA

Average rainfall in September - Worthington, IA
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in September
Worthington, IA

Average rainfall days in September - Worthington, IA
  • Average rainfall days in September: 12.5 days

The months with the highest number of rainy days are May and June (19.9 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in September
Worthington, IA

Average snowfall in September - Worthington, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Worthington, IA

Average snowfall days in September - Worthington, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (14 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
Worthington, IA

Average daylight in September / Average sunshine in September - Worthington, 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 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in September
Worthington, IA

Average sunshine days in September - Worthington, IA
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (7.8 days).

Average UV index in September
Worthington, IA

Average UV index in September - Worthington, IA
  • Average UV index in September: 4

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in September
Worthington, IA

Average cloud cover in September - Worthington, IA
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in September
Worthington, IA

Average visibility in September - Worthington, IA
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).

Worthington, Iowa, USA

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