August weather forecastRockford, IN
August
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 13h and 42min
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 36min
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: 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: 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: 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: 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).





