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 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
During June, Alton records an average high-temperature of a still hot 90.3°F (32.4°C), marking a slight divergence from May's 86.4°F (30.2°C). June is noted for a mean low-temperature of 72.3°F (22.4°C).Heat index
For June, the heat index is calculated to be an extremely hot 111.2°F (44°C). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
The average relative humidity in June is 75%.Rainfall
In Alton, in June, during 22.1 rainfall days, 4.53" (115mm) of precipitation is typically accumulated. In Alton, during the entire year, the rain falls for 173.6 days and collects up to 31.3" (795mm) of precipitation.Snowfall
In Alton, snow does not fall in January, March through December.Daylight
The month with the longest days is June, with an average of 14h and 6min of daylight.On the first day of the month, sunrise is at 6:31 am and sunset at 8:29 pm. On the last day of June, sunrise is at 6:34 am and sunset at 8:37 pm EDT.
Sunshine
In June, the average sunshine is 10.5h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 7 in June interprets into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in June?
What is the average humidity in June in Alton?
How much does it rain in June?
When it does not snow?
When are the longest days?
How many hours of daylight does Alton have in June?
When are sunrise and sunset in June?
How many hours of sunshine does Alton have in June?
What are the months with the highest UV index?
What is the UV index intensity in June?
Average temperature in June
Alton, FL
- Average high temperature in June: 90.3°F
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in June: 72.3°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in June
Alton, FL
- Average pressure in June: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in June
Alton, FL
- Average wind speed in June: 5.2mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in June
Alton, FL
- Average humidity in June: 75%
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (70%).
Average rainfall in June
Alton, FL
- Average rainfall in June: 4.53"
The wettest month (with the highest rainfall) is August (4.57").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in June
Alton, FL
- Average rainfall days in June: 22.1 days
The month with the highest number of rainy days is August (25.5 days).
The month with the least rainy days is November (7.2 days).
Average snowfall days in June
Alton, FL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in June /
Average sunshine in June
Alton, FL
- Average daylight in June: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in June: 10h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in June
Alton, FL
- Average sunshine days in June: 6 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (4.3 days).
Average UV index in June
Alton, FL
- Average UV index in June: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in June
Alton, FL
- Average cloud cover in June: 32
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in June
Alton, FL
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Alton, Florida, USA
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