August weather forecast
Norwalk, WI

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Weather in August

August, the last month of the summer in Norwalk, is also a moderately hot month, with an average temperature fluctuating between 58.3°F (14.6°C) and 77.5°F (25.3°C).

Temperature

August brings an average high-temperature of a still warm 77.5°F (25.3°C), showing a slight difference from July's 79.5°F (26.4°C). During August nights, Norwalk records an average temperature of 58.3°F (14.6°C).

Humidity

In Norwalk, the average relative humidity in August is 80%.

Rainfall

In Norwalk, in August, during 11.6 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Norwalk, during the entire year, the rain falls for 112.6 days and collects up to 18.11" (460mm) of precipitation.

Snowfall

In Norwalk, Wisconsin, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 56min.
On the first day of August, sunrise is at 5:52 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:39 pm CDT.

Sunshine

In Norwalk, Wisconsin, the average sunshine in August is 9.5h.

UV index

In August, the average daily maximum UV index in Norwalk is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a daily UV index of 5 turns into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Norwalk?

In August, the average high-temperature and low-temperature are 77.5°F (25.3°C) and 58.3°F (14.6°C) respectively.

What is the average humidity in August in Norwalk?

In August, the average relative humidity in Norwalk is 80%.

How much does it rain in Norwalk in August?

In Norwalk, in August, it is raining for 11.6 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in Norwalk?

June through September are months without snowfall in Norwalk.

How many hours of daylight does Norwalk have in August?

In Norwalk, the average day length in August is 13h and 56min.

When are sunrise and sunset in August in Norwalk?

In August, on the first day of the month, sunrise is at 5:52 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:39 pm CDT.

How long on average sun shines in August in Norwalk?

In Norwalk, Wisconsin, the average sunshine duration in August is 9.5h.

How high is the UV index in August in Norwalk?

In Norwalk, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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 August
Norwalk, WI

Average temperature in August - Norwalk, WI
  • Average high temperature in August: 77.5°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 (21.4°F).

  • Average low temperature in August: 58.3°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

Average pressure in August
Norwalk, WI

Average pressure in August - Norwalk, WI
  • Average pressure in August: 29.96"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Norwalk, WI

Average wind speed in August - Norwalk, WI
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in August
Norwalk, WI

Average humidity in August - Norwalk, WI
  • Average humidity in August: 80%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).

Average rainfall in August
Norwalk, WI

Average rainfall in August - Norwalk, WI
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January and February (0.67").

Average rainfall days in August
Norwalk, WI

Average rainfall days in August - Norwalk, WI
  • Average rainfall days in August: 11.6 days

The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (2.1 days).

Average snowfall in August
Norwalk, WI

Average snowfall in August - Norwalk, WI
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Norwalk, WI

Average snowfall days in August - Norwalk, WI
  • Average snowfall days in August: 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 daylight in August /
Average sunshine in August
Norwalk, WI

Average daylight in August / Average sunshine in August - Norwalk, WI
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in August
Norwalk, WI

Average sunshine days in August - Norwalk, WI
  • Average sunshine days in August: 17.1 days

The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in August
Norwalk, WI

Average UV index in August - Norwalk, WI
  • Average UV index in August: 5

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 August
Norwalk, WI

Average cloud cover in August - Norwalk, WI
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in August
Norwalk, WI

Average visibility in August - Norwalk, WI
  • Average visibility in August: 5mi

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

Norwalk, Wisconsin, USA

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