August weather forecast
Deer Grove, IL

Share

Weather in August

The last month of the summer, August, is also a moderately hot month in Deer Grove, Illinois, with an average temperature varying between 62.1°F (16.7°C) and 79.5°F (26.4°C).

Temperature

A minimal variation is noted in Deer Grove's average high-temperature at the onset of August, reaching a still moderately hot 79.5°F (26.4°C) from July's 80.2°F (26.8°C). Deer Grove experiences an average temperature drop to a refreshing 62.1°F (16.7°C) during August nights.

Humidity

The average relative humidity in August is 83%.

Rainfall

In Deer Grove, in August, it is raining for 11.5 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 114.5 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Snowfall

In Deer Grove, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 48min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:16 pm. On the last day of August, sunrise is at 6:24 am and sunset at 7:33 pm CDT.

Sunshine

June through August, with an average of 9.6h of sunshine, are months with the most sunshine.

UV index

In August, the average daily maximum UV index 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, an average UV index of 5 transforms into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Jun 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Deer Grove in August?

In Deer Grove, in August, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 62.1°F (16.7°C).

What is the average humidity in August?

In August, the average relative humidity is 83%.

How much does it rain in August?

In Deer Grove, during August, the rain falls for 11.5 days and regularly aggregates up to 1.02" (26mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 48min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:33 pm CDT.

What are the months with the most sunshine?

The months with the most sunshine are June through August, with an average of 9.6h of sunshine.

How long on average sun shines in August in Deer Grove?

The average sunshine duration in August is 9.6h.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Deer Grove, IL

Average temperature in August - Deer Grove, IL
  • Average high temperature in August: 79.5°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in August
Deer Grove, IL

Average pressure in August - Deer Grove, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Deer Grove, IL

Average wind speed in August - Deer Grove, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Deer Grove, IL

Average humidity in August - Deer Grove, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Deer Grove, IL

Average rainfall in August - Deer Grove, IL
  • Average rainfall in August: 1.02"

The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in August
Deer Grove, IL

Average rainfall days in August - Deer Grove, IL
  • Average rainfall days in August: 11.5 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in August
Deer Grove, IL

Average snowfall in August - Deer Grove, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Deer Grove, IL

Average snowfall days in August - Deer Grove, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.1 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
Deer Grove, IL

Average daylight in August / Average sunshine in August - Deer Grove, IL
  • 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 12min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Deer Grove, IL

Average sunshine days in August - Deer Grove, IL
  • Average sunshine days in August: 16.1 days

The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is June (13.5 days).

Average UV index in August
Deer Grove, IL

Average UV index in August - Deer Grove, IL
  • 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 and December (UV index 1).

Average cloud cover in August
Deer Grove, IL

Average cloud cover in August - Deer Grove, IL
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).

Average visibility in August
Deer Grove, IL

Average visibility in August - Deer Grove, IL
  • Average visibility in August: 5mi

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

Deer Grove, Illinois, USA

Weather forecast for your location

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