September weather forecast
Ephraim, WI

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Weather in September

September marks the autumn season in Ephraim thus, the weather starts to cool from the soaring summer temperatures. Though a gradual decrease in temperature is noted, it remains warm enough to enjoy outdoor activities. Rainfall holds steady at 2.24" (57mm), mirroring the rainfall in August. It entails diminishing daylight hours and a considerable drop in sea temperature. In a nutshell, the advent of autumn in September brings about cooler climatic conditions with steady rainfall.

Temperature

September commences with an average high-temperature of a refreshing 64.4°F (18°C), showing little deviation from August's 69.6°F (20.9°C). An average low-temperature of 57.6°F (14.2°C) is witnessed throughout the month of September in Ephraim, a mere drop from the daytime peak.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Ephraim, in September, it is raining for 12.9 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 141.7 rainfall days, and 26.93" (684mm) of precipitation is accumulated.

Snowfall

In Ephraim, snow does not fall in June through September.

Ocean temperature

In Ephraim, the average seawater temperature in September is 60.8°F (16°C).
Note: Most people do not enjoy swimming in water of 60.8°F (16°C). Breathing control becomes harder as the temperature descends from 69.8°F (21°C) to 59°F (15°C).

Daylight

In September, the average length of the day in Ephraim is 12h and 31min.
On the first day of the month, sunrise is at 6:11 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:30 pm CDT.

Sunshine

In Ephraim, Wisconsin, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September in Ephraim is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Ephraim?

Ephraim in September has an average high-temperature of 64.4°F (18°C) and an average low-temperature of 57.6°F (14.2°C).

What is the average humidity in September in Ephraim?

The average relative humidity in September in Ephraim is 79%.

How much does it rain in Ephraim in September?

In Ephraim, in September, it is raining for 12.9 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Ephraim?

June through September are months without snowfall.

Does it snow in Ephraim in September?

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

How cold is the water in September in Ephraim?

In Ephraim, Wisconsin, the average seawater temperature in September is 60.8°F (16°C). For most, swimming in 60.8°F (16°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in September in Ephraim?

In Ephraim, the average day length in September is 12h and 31min.

When are sunrise and sunset in September in Ephraim?

On the first day of September in Ephraim, Wisconsin, sunrise is at 6:11 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:30 pm CDT.

How many hours of sunshine does Ephraim have in September?

In September, the average sunshine duration in Ephraim, Wisconsin, is 8.8h.

How high is the UV index in September in Ephraim?

The average daily maximum UV index in September in Ephraim, Wisconsin, is 3. A UV Index estimate of 3 to 5 represents a medium health risk 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
Ephraim, WI

Average temperature in September - Ephraim, WI
  • Average high temperature in September: 64.4°F

The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in September: 57.6°F

The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in September
Ephraim, WI

Average pressure in September - Ephraim, WI
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Ephraim, WI

Average wind speed in September - Ephraim, WI
  • Average wind speed in September: 12mph

The windiest month (with the highest average wind speed) is December (15.5mph).
The calmest months (with the lowest average wind speed) are June and July (9.6mph).

Average humidity in September
Ephraim, WI

Average humidity in September - Ephraim, WI
  • Average humidity in September: 79%

The months with the highest relative humidity are January and June (84%).
The month with the lowest relative humidity is November (76%).

Average rainfall in September
Ephraim, WI

Average rainfall in September - Ephraim, WI
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are January and February (1.38").

Average rainfall days in September
Ephraim, WI

Average rainfall days in September - Ephraim, WI
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is February (4.8 days).

Average snowfall in September
Ephraim, WI

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

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

Average snowfall days in September
Ephraim, WI

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

The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in September
Ephraim, WI

Average sea temperature in September - Ephraim, WI
  • Average sea temperature in September: 61°F

The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest months (with the lowest average sea temperature) are March and April (36°F).

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

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

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

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in September
Ephraim, WI

Average sunshine days in September - Ephraim, WI
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is January (8.3 days).

Average UV index in September
Ephraim, WI

Average UV index in September - Ephraim, WI
  • Average UV index in September: 3

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

Average cloud cover in September
Ephraim, WI

Average cloud cover in September - Ephraim, WI
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in September
Ephraim, WI

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

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

Ephraim, Wisconsin, USA

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