August weather forecast
Fairfield, IA

Share

Weather in August

August in Fairfield symbolizes the gradual closing of the summer season. The town's climate starts to retrench from July's height with temperatures descending slightly. Surprisingly, this month still maintains the longest sunshine duration of 9.8 hours, compensating for the dwindling daylight hours. Unlike the preceding month, wind speeds remain relatively constant. As the August sun begins to set, it makes way for the cooler conditions of September.

Temperature

August ushers in an average high-temperature of a still moderately hot 81.5°F (27.5°C) in Fairfield, aligning closely with the preceding month. Throughout the month of August, Fairfield observes an average nighttime temperature of 63.3°F (17.4°C).

Heat index

The heat index value during August is computed to be a hot 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

In Fairfield, the average relative humidity in August is 79%.

Rainfall

In August, in Fairfield, the rain falls for 12.1 days. Throughout August, 2.05" (52mm) of precipitation is accumulated. In Fairfield, during the entire year, the rain falls for 135.6 days and collects up to 28.66" (728mm) of precipitation.

Snowfall

In Fairfield, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:23 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:41 pm CDT.

Sunshine

In August, the average sunshine in Fairfield is 9.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Fairfield. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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 Fairfield in August?

The high-temperature, in August, in Fairfield, is 81.5°F (27.5°C), while the low-temperature averages to 63.3°F (17.4°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in August in Fairfield?

In August, the average relative humidity is 79%.

How much does it rain in Fairfield in August?

In August, in Fairfield, the rain falls for 12.1 days. Throughout August, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in Fairfield?

May through September are months without snowfall in Fairfield, Iowa.

How many hours of daylight does Fairfield have in August?

In Fairfield, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August in Fairfield?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:41 pm CDT.

How many hours of sunshine does Fairfield have in August?

The average sunshine duration in August in Fairfield, Iowa, is 9.8h.

What are the months with the highest UV index in Fairfield?

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

What is the UV index reading in August in Fairfield?

In Fairfield, Iowa, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high 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 August
Fairfield, IA

Average temperature in August - Fairfield, IA
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in August
Fairfield, IA

Average pressure in August - Fairfield, IA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Fairfield, IA

Average wind speed in August - Fairfield, IA
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in August
Fairfield, IA

Average humidity in August - Fairfield, IA
  • Average humidity in August: 79%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Fairfield, IA

Average rainfall in August - Fairfield, IA
  • Average rainfall in August: 2.05"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.18").

Average rainfall days in August
Fairfield, IA

Average rainfall days in August - Fairfield, IA
  • Average rainfall days in August: 12.1 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (4.9 days).

Average snowfall in August
Fairfield, IA

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

The months with the highest snowfall are January and February (4.33").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Fairfield, IA

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

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Fairfield, IA
  • Average daylight in August: 13h and 5min

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 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
Fairfield, IA

Average sunshine days in August - Fairfield, IA
  • Average sunshine days in August: 16.7 days

The months with the most sunshine days are October and November (18.8 days).
The month with the least sunshine days is May (11 days).

Average UV index in August
Fairfield, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in August
Fairfield, IA

Average cloud cover in August - Fairfield, IA
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in August
Fairfield, IA

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

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

Fairfield, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location