September weather forecast
Poplar, WI

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Weather in September

September, the first month of the autumn in Poplar, is still a comfortable month, with an average temperature ranging between max 67.1°F (19.5°C) and min 49.5°F (9.7°C).

Temperature

September suggests a modest reduction in the average high-temperature, shifting from a moderately hot 76.3°F (24.6°C) in August to an enjoyable 67.1°F (19.5°C). Poplar's temperature tends to fall to an average low of 49.5°F (9.7°C) during the nights of September.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Poplar, in September, during 6.2 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 55.7 rainfall days, and 4.33" (110mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Poplar, the average length of the day in September is 12h and 32min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:48 pm CDT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

In Poplar, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 4 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

What are September temperatures?

Poplar in September has an average high-temperature of 67.1°F (19.5°C) and an average low-temperature of 49.5°F (9.7°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

How much does it rain in September?

In September, the rain falls for 6.2 days. Throughout September, 0.35" (9mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall in Poplar, Wisconsin.

Does it snow in Poplar in September?

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

What is the average length of the day in September?

In Poplar, the average day length in September is 12h and 32min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:28 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:48 pm CDT.

How many hours of sunshine does Poplar have in September?

In September, the average sunshine duration is 8.2h.

How high is the UV index in September in Poplar?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Poplar, WI

Average temperature in September - Poplar, WI
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (17.1°F).

  • Average low temperature in September: 49.5°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (4.1°F).

Average pressure in September
Poplar, WI

Average pressure in September - Poplar, WI
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in September
Poplar, WI

Average wind speed in September - Poplar, WI
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in September
Poplar, WI

Average humidity in September - Poplar, WI
  • Average humidity in September: 78%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

Average rainfall in September
Poplar, WI

Average rainfall in September - Poplar, WI
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is July (0.67").
The driest months (with the least rainfall) are January and February (0.16").

Average rainfall days in September
Poplar, WI

Average rainfall days in September - Poplar, WI
  • Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is May (7.9 days).
The month with the least rainy days is February (0.5 days).

Average snowfall in September
Poplar, WI

Average snowfall in September - Poplar, WI
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Poplar, WI

Average snowfall days in September - Poplar, WI
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Poplar, WI

Average daylight in September / Average sunshine in September - Poplar, WI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in September
Poplar, WI

Average sunshine days in September - Poplar, WI
  • Average sunshine days in September: 21.9 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is April (19.9 days).

Average UV index in September
Poplar, WI

Average UV index in September - Poplar, WI
  • 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, February, November and December (UV index 1).

Average cloud cover in September
Poplar, WI

Average cloud cover in September - Poplar, WI
  • Average cloud cover in September: 40

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in September
Poplar, WI

Average visibility in September - Poplar, WI
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Poplar, Wisconsin, USA

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