August weather forecast
Norwich, IA

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Weather in August

August, the last month of the summer in Norwich, is also a moderately hot month, with an average temperature ranging between min 63.7°F (17.6°C) and max 82.2°F (27.9°C).

Temperature

The weather during August records an average high-temperature of a still warm 82.2°F (27.9°C), closely mirroring the preceding month. Throughout the month of August, Norwich observes an average nighttime temperature of 63.7°F (17.6°C).

Heat index

August's heat index is calculated to be a hot 89.6°F (32°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In August, the average relative humidity in Norwich, Iowa, is 78%.

Rainfall

In Norwich, Iowa, in August, during 12.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Norwich, during the entire year, the rain falls for 125.6 days and collects up to 26.14" (664mm) of precipitation.

Snowfall

May through September are months without snowfall in Norwich.

Daylight

In August, the average length of the day in Norwich is 13h and 44min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:36 pm. On the last day of August, sunrise is at 6:47 am and sunset at 7:54 pm CDT.

Sunshine

In Norwich, the average sunshine in August is 9.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Norwich in August?

In August, in Norwich, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 63.7°F (17.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 89.6°F (32°C).

What is the average humidity in August in Norwich?

In Norwich, the average relative humidity in August is 78%.

How many days does it rain in August in Norwich?

In Norwich, Iowa, during August, the rain falls for 12.8 days and regularly aggregates up to 2.6" (66mm) of precipitation.

When it does not snow in Norwich?

In Norwich, Iowa, snow does not fall in May through September.

What is the average length of the day in August in Norwich?

In Norwich, the average day length in August is 13h and 44min.

What time are sunrise and sunset in August in Norwich?

On the first day of August, sunrise is at 6:18 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:54 pm CDT.

How long on average sun shines in August in Norwich?

In August, the average sunshine duration is 9.9h.

When is the highest UV index in Norwich?

The months with the highest UV index in Norwich are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Norwich?

The average daily maximum UV index in August in Norwich, Iowa, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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 August
Norwich, IA

Average temperature in August - Norwich, IA
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in August
Norwich, IA

Average pressure in August - Norwich, IA
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Norwich, IA

Average wind speed in August - Norwich, IA
  • Average wind speed in August: 6.9mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in August
Norwich, IA

Average humidity in August - Norwich, IA
  • Average humidity in August: 78%

The months with the highest relative humidity are January and July (79%).
The month with the lowest relative humidity is October (67%).

Average rainfall in August
Norwich, IA

Average rainfall in August - Norwich, IA
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in August
Norwich, IA

Average rainfall days in August - Norwich, IA
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.9 days).

Average snowfall in August
Norwich, IA

Average snowfall in August - Norwich, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Norwich, IA

Average snowfall days in August - Norwich, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Norwich, IA

Average daylight in August / Average sunshine in August - Norwich, IA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in August
Norwich, IA

Average sunshine days in August - Norwich, IA
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in August
Norwich, IA

Average UV index in August - Norwich, IA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Norwich, IA

Average cloud cover in August - Norwich, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in August
Norwich, IA

Average visibility in August - Norwich, IA
  • Average visibility in August: 6mi

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

Norwich, Iowa, USA

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