June weather forecastHannibal, MO

The stunning Mark Twain Memorial Lighthouse stands tall in white among the surrounding rocks and greenery in Hannibal, MissouriThe stunning Mark Twain Memorial Lighthouse stands tall in white among the surrounding rocks and greenery in Hannibal, Missouri

June

Weather in June

As the calendar flips to June, Hannibal, Missouri transforms under the clear signs of summer, displaying increased temperatures and extended daylight. With the summer solstice, June maximizes daylight hours, allowing residents and visitors ample time to explore the city's offerings. The city basks in warmth, recording increased temperatures without the hindrance of snowfall. The weather data highlights June's high temperature of 82°F (27.8°C) as a marked shift from the preceding months. Moreover, the sight of clear skies diffused with vibrant sunset hues over the city landscape signifies a classic June evening in Hannibal.

Temperature

The start of June brings a rise in the average high-temperature, moving from a pleasant 72.7°F (22.6°C) in May to a moderately hot 82°F (27.8°C). Hannibal temperatures generally rest at a low of 64.4°F (18°C) during the June nights.

Heat index

June's average heat index is calculated to be a tropical 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

May through July, with an average relative humidity of 80%, are the most humid months.

Rainfall

In Hannibal, in June, during 14.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Hannibal, during the entire year, the rain falls for 136 days and collects up to 25" (635mm) of precipitation.

Snowfall

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

Daylight

June has the longest days of the year, with an average of 14h and 54min of daylight.
On the first day of June, sunrise is at 5:39 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:37 pm CDT.

Sunshine

In Hannibal, the average sunshine in June is 10.4h.

UV index

June 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 threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in June translates into this advice:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

In June, in Hannibal, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 64.4°F (18°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in June is calculated to be 89.6°F (32°C).

The months with the highest humidity are May through July, with an average relative humidity of 80%.

In Hannibal, the average relative humidity in June is 80%.

In Hannibal, during June, the rain falls for 14.6 days and regularly aggregates up to 2.95" (75mm) of precipitation.

May through October are months without snowfall.

With an average of 14h and 54min of daylight, June has the longest days of the year.

The average day length in June is 14h and 56min.

In June, on the first day of the month, sunrise is at 5:39 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:37 pm CDT.

In June, the average sunshine duration is 10.4h.

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

In Hannibal, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Hannibal, MO

  • Average high temperature in June: 82°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in June: 64.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in June
Hannibal, MO

  • Average pressure in June: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in June
Hannibal, MO

  • Average wind speed in June: 7.2mph

The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in June
Hannibal, MO

  • Average humidity in June: 80%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in June
Hannibal, MO

  • Average rainfall in June: 2.95"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in June
Hannibal, MO

  • Average rainfall days in June: 14.6 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in June
Hannibal, MO

  • Average snowfall in June: 0"

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
Hannibal, MO

  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.2 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
Hannibal, MO

  • Average daylight in June: 14h and 54min

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 24min).

  • Average sunshine in June: 10h and 24min

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

Average sunshine days in June
Hannibal, MO

  • Average sunshine days in June: 11.6 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in June
Hannibal, MO

  • Average UV index in June: 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 June
Hannibal, MO

  • 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 July (Cloud cover 27).

Average visibility in June
Hannibal, 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).