Contents
- Weather in June
- Frequently asked questions
- Average temperature in June
- Average pressure in June
- Average wind speed in June
- Average humidity in June
- Average rainfall in June
- Average rainfall days in June
- Average snowfall in June
- Average snowfall days in June
- Average daylight in June
- Average sunshine in June
- Average sunshine days in June
- Average UV index in June
- Average cloud cover in June
- Average visibility in June
Weather in June
Temperature
Observing a rise in June, the average high-temperature goes from May's warm 74.1°F (23.4°C) to a still moderately hot 83.3°F (28.5°C). Grafton, during June, witnesses an average low-temperature of 65.8°F (18.8°C).Heat index
The average heat index in June is evaluated at a tropical 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Consider that heat index readings are for situations in the shade and light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In Grafton, the average relative humidity in June is 78%.Rainfall
In Grafton, during June, the rain falls for 15.1 days and regularly aggregates up to 3.19" (81mm) of precipitation. Throughout the year, there are 138.8 rainfall days, and 27.6" (701mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
June has the longest days of the year in Grafton, Illinois, with an average of 14h and 54min of daylight.On the first day of June in Grafton, sunrise is at 5:37 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:31 pm CDT.
Sunshine
The months with the most sunshine in Grafton are June and July, with an average of 10.4h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in June, converts into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Grafton in June?
What is the average humidity in June in Grafton?
How much does it rain in Grafton in June?
When it does not snow in Grafton?
When are the longest days in Grafton?
What is the average length of the day in June in Grafton?
What time are sunrise and sunset in June in Grafton?
What are the months with the most sunshine in Grafton?
How many hours of sunshine does Grafton have in June?
When is the highest UV index in Grafton?
How high is the UV index in June in Grafton?
Average temperature in June
Grafton, IL
- Average high temperature in June: 83.3°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 (36.1°F).
- Average low temperature in June: 65.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in June
Grafton, IL
- Average pressure in June: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in June
Grafton, IL
- Average wind speed in June: 6.5mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in June
Grafton, IL
- Average humidity in June: 78%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in June
Grafton, IL
- Average rainfall in June: 3.19"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days in June
Grafton, IL
- Average rainfall days in June: 15.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in June
Grafton, IL
- Average snowfall in June: 0"
The months with the highest snowfall are January and February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in June
Grafton, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Grafton, IL
- Average daylight in June: 14h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in June: 10h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in June
Grafton, IL
- Average sunshine days in June: 11.2 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in June
Grafton, IL
- Average UV index in June: 6
The months with the highest UV index are May, 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 June
Grafton, IL
- Average cloud cover in June: 29
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in June
Grafton, IL
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grafton, Illinois, USA
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