September weather forecast
Tampico, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Tampico, Illinois, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 55.8°F (13.2°C).

Temperature

The commencement of September introduces an average high-temperature of a still moderately hot 74.7°F (23.7°C), closely mirroring the preceding month. Tampico, in September, observes a steady average low-temperature of 55.8°F (13.2°C).

Humidity

In Tampico, the average relative humidity in September is 77%.

Rainfall

In Tampico, during September, the rain falls for 12.5 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Tampico, during the entire year, the rain falls for 151.5 days and collects up to 30.24" (768mm) of precipitation.

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 the month, sunrise is at 6:25 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

Sunshine

In Tampico, the average sunshine in September is 9.2h.

UV index

In Tampico, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 4 in September transforms into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Tampico?

During September, Tampico experiences an average high-temperature of 74.7°F (23.7°C) and a low-temperature of 55.8°F (13.2°C).

What is the average humidity in September?

In Tampico, the average relative humidity in September is 77%.

How much does it rain in September?

In Tampico, in September, during 12.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:25 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.2h.

How high is the UV index in September?

In Tampico, Illinois, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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
Tampico, IL

Average temperature in September - Tampico, IL
  • Average high temperature in September: 74.7°F

The warmest month (with the highest average high temperature) is July (80.2°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°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in September
Tampico, IL

Average pressure in September - Tampico, IL
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Tampico, IL

Average wind speed in September - Tampico, IL
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in September
Tampico, IL

Average humidity in September - Tampico, IL
  • Average humidity in September: 77%

The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Tampico, IL

Average rainfall in September - Tampico, IL
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").

Average rainfall days in September
Tampico, IL

Average rainfall days in September - Tampico, IL
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in September
Tampico, IL

Average snowfall in September - Tampico, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Tampico, IL

Average snowfall days in September - Tampico, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.5 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
Tampico, IL

Average daylight in September / Average sunshine in September - Tampico, IL
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in September
Tampico, IL

Average sunshine days in September - Tampico, IL
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).

Average UV index in September
Tampico, IL

Average UV index in September - Tampico, IL
  • Average UV index in September: 4

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in September
Tampico, IL

Average cloud cover in September - Tampico, IL
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).

Average visibility in September
Tampico, IL

Average visibility in September - Tampico, IL
  • 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).

Tampico, Illinois, USA

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