June weather forecast
Herculaneum, MO

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Weather in June

June, the first month of the summer in Herculaneum, is still a warm month, with an average temperature fluctuating between 84.9°F (29.4°C) and 65.3°F (18.5°C).

Temperature

As Herculaneum, Missouri, transitions into June, the average high-temperature shows a change, moving from a moderately hot 75.6°F (24.2°C) in May to a still warm 84.9°F (29.4°C). During June, the temperature is averaged to a low of 65.3°F (18.5°C) at night.

Heat index

The average heat index in June is calculated to be a sweltering 95°F (35°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Herculaneum, the average relative humidity in June is 77%.

Rainfall

In June, the rain falls for 15.3 days. Throughout June, 3.54" (90mm) of precipitation is accumulated. Throughout the year, there are 155 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Snowfall

In Herculaneum, snow does not fall in April through October.

Daylight

The month with the longest days in Herculaneum, Missouri, is June, with an average of 14h and 48min of daylight.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:19 pm. On the last day of June, sunrise is at 5:41 am and sunset at 8:29 pm CDT.

Sunshine

June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Herculaneum.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Herculaneum. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 6 in June transforms into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

How hot does it get in Herculaneum in June?

In Herculaneum, in June, the average high-temperature is 84.9°F (29.4°C), and the average low-temperature is 65.3°F (18.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in June is calculated to be 95°F (35°C).

What is the average humidity in June in Herculaneum?

In June, the average relative humidity is 77%.

How much does it rain in Herculaneum in June?

In June, in Herculaneum, Missouri, the rain falls for 15.3 days. Throughout June, 3.54" (90mm) of precipitation is accumulated.

When it does not snow in Herculaneum?

In Herculaneum, Missouri, snow does not fall in April through October.

When are the longest days in Herculaneum?

June has the longest days of the year in Herculaneum, Missouri, with an average of 14h and 48min of daylight.

How many hours of daylight does Herculaneum have in June?

The average day length in June in Herculaneum, Missouri, is 14h and 47min.

When are sunrise and sunset in June in Herculaneum?

In June, on the first day of the month, sunrise is at 5:39 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:29 pm CDT.

What is the month with the most sunshine in Herculaneum?

June and July, with an average of 10.5h of sunshine, are months with the most sunshine.

How many hours of sunshine does Herculaneum have in June?

The average sunshine duration in June is 10.5h.

What is the month with the highest UV index in Herculaneum?

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

How high is the UV index in June in Herculaneum?

In Herculaneum, Missouri, the average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high hazard to health from 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 June
Herculaneum, MO

Average temperature in June - Herculaneum, MO
  • Average high temperature in June: 84.9°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in June: 65.3°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 (25.2°F).

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Average pressure in June
Herculaneum, MO

Average pressure in June - Herculaneum, MO
  • 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).

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Average wind speed in June
Herculaneum, MO

Average wind speed in June - Herculaneum, MO
  • Average wind speed in June: 6.2mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in June
Herculaneum, MO

Average humidity in June - Herculaneum, MO
  • Average humidity in June: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in June
Herculaneum, MO

Average rainfall in June - Herculaneum, MO
  • Average rainfall in June: 3.54"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").

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Average rainfall days in June
Herculaneum, MO

Average rainfall days in June - Herculaneum, MO
  • Average rainfall days in June: 15.3 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in June
Herculaneum, MO

Average snowfall in June - Herculaneum, MO
  • Average snowfall in June: 0"

The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in June
Herculaneum, MO

Average snowfall days in June - Herculaneum, MO
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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Average daylight in June /
Average sunshine in June
Herculaneum, MO

Average daylight in June / Average sunshine in June - Herculaneum, MO
  • Average daylight in June: 14h and 5min

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 June: 10h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in June
Herculaneum, MO

Average sunshine days in June - Herculaneum, MO
  • Average sunshine days in June: 11.9 days

The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).

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Average UV index in June
Herculaneum, MO

Average UV index in June - Herculaneum, MO
  • 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).

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Average cloud cover in June
Herculaneum, MO

Average cloud cover in June - Herculaneum, MO
  • Average cloud cover in June: 28

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).

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Average visibility in June
Herculaneum, MO

Average visibility in June - Herculaneum, MO
  • 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).

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Herculaneum, Missouri, USA

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