August weather forecast
Grantsburg, IN

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Weather in August

August, the last month of the summer in Grantsburg, is also a moderately hot month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 85.1°F (29.5°C).

Temperature

August's advent presents an average high-temperature of a warm 85.1°F (29.5°C), indicating a slight variation from the conditions of the previous month. During August, Grantsburg experiences a consistent low-temperature average of 64.6°F (18.1°C).

Heat index

For August, the heat index is calculated to be a very hot 95°F (35°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in August in Grantsburg is 76%.

Rainfall

In Grantsburg, in August, during 12.8 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Grantsburg, during the entire year, the rain falls for 137.1 days and collects up to 20.28" (515mm) of precipitation.

Snowfall

In Grantsburg, snow does not fall in May through October.

Daylight

The average length of the day in August is 13h and 36min.
On the first day of the month, sunrise is at 6:48 am and sunset at 8:55 pm. On the last day of August, in Grantsburg, sunrise is at 7:15 am and sunset at 8:16 pm EDT.

Sunshine

In August, the average sunshine in Grantsburg is 9.3h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Grantsburg in August?

In Grantsburg, in August, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 64.6°F (18.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 95°F (35°C).

What is the average humidity in August in Grantsburg?

In August, the average relative humidity in Grantsburg is 76%.

How many days does it rain in August in Grantsburg?

In Grantsburg, in August, it is raining for 12.8 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow in Grantsburg?

May through October are months without snowfall.

How many hours of daylight does Grantsburg have in August?

In August, the average day length in Grantsburg is 13h and 36min.

When is the sunrise / sunset in August in Grantsburg?

On the first day of August, sunrise is at 6:48 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 8:16 pm EDT.

How many hours of sunshine does Grantsburg have in August?

In Grantsburg, the average sunshine duration in August is 9.3h.

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

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

What is the UV index intensity in August in Grantsburg?

The average daily maximum UV index in August in Grantsburg is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Grantsburg, IN

Average temperature in August - Grantsburg, IN
  • Average high temperature in August: 85.1°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in August
Grantsburg, IN

Average pressure in August - Grantsburg, IN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Grantsburg, IN

Average wind speed in August - Grantsburg, IN
  • Average wind speed in August: 4.8mph

The windiest months (with the highest average wind speed) are January, February and April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in August
Grantsburg, IN

Average humidity in August - Grantsburg, IN
  • Average humidity in August: 76%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Grantsburg, IN

Average rainfall in August - Grantsburg, IN
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is September (0.98").

Average rainfall days in August
Grantsburg, IN

Average rainfall days in August - Grantsburg, IN
  • 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 December (8.2 days).

Average snowfall in August
Grantsburg, IN

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

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Grantsburg, IN

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

The month with the highest number of snowfall days is January (6.6 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
Grantsburg, IN

Average daylight in August / Average sunshine in August - Grantsburg, IN
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 9h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days in August
Grantsburg, IN

Average sunshine days in August - Grantsburg, IN
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (12 days).

Average UV index in August
Grantsburg, IN

Average UV index in August - Grantsburg, IN
  • 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
Grantsburg, IN

Average cloud cover in August - Grantsburg, IN
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in August
Grantsburg, IN

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

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

Grantsburg, Indiana, USA

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