August weather forecast
Rockford, IN

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Weather in August

August, the last month of the summer in Rockford, is another warm month, with temperature in the range of an average high of 79.2°F (26.2°C) and an average low of 61.5°F (16.4°C).

Temperature

With the onset of August, the average high-temperature registers at a still warm 79.2°F (26.2°C), subtly different from July's 81.1°F (27.3°C). August's average low-temperature reading settles at an enjoyable 61.5°F (16.4°C).

Humidity

In Rockford, the average relative humidity in August is 82%.

Rainfall

In Rockford, in August, during 10.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, there are 111.9 rainfall days, and 9.65" (245mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August is 13h and 45min.
On the first day of August, sunrise is at 6:38 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 8:14 pm EDT.

Sunshine

In August, the average sunshine is 9.6h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in August leads to these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Rockford in August?

In August, in Rockford, the average high-temperature is 79.2°F (26.2°C), and the average low-temperature is 61.5°F (16.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in July is estimated at 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 82%.

How many days does it rain in August in Rockford?

In August, the rain falls for 10.8 days. Throughout August, 0.91" (23mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

How many hours of daylight does Rockford have in August?

In Rockford, the average day length in August is 13h and 45min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:38 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 8:14 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.6h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe 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
Rockford, IN

Average temperature in August - Rockford, IN
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in August: 61.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in August
Rockford, IN

Average pressure in August - Rockford, IN
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Rockford, IN

Average wind speed in August - Rockford, IN
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in August
Rockford, IN

Average humidity in August - Rockford, IN
  • Average humidity in August: 82%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Rockford, IN

Average rainfall in August - Rockford, IN
  • Average rainfall in August: 0.91"

The wettest month (with the highest rainfall) is May (1.22").
The driest months (with the least rainfall) are February and November (0.51").

Average rainfall days in August
Rockford, IN

Average rainfall days in August - Rockford, IN
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is February (4.6 days).

Average snowfall in August
Rockford, IN

Average snowfall in August - Rockford, IN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.14").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Rockford, IN

Average snowfall days in August - Rockford, IN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.4 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
Rockford, IN

Average daylight in August / Average sunshine in August - Rockford, IN
  • 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in August
Rockford, IN

Average sunshine days in August - Rockford, IN
  • Average sunshine days in August: 16.2 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is May (13.1 days).

Average UV index in August
Rockford, IN

Average UV index in August - Rockford, IN
  • 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 December (UV index 1).

Average cloud cover in August
Rockford, IN

Average cloud cover in August - Rockford, IN
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in August
Rockford, IN

Average visibility in August - Rockford, IN
  • Average visibility in August: 5mi

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

Rockford, Indiana, USA

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