June weather forecastSumner, MO

June

Weather in June

June, the first month of the summer in Sumner, is a moderately hot month, with an average temperature fluctuating between 81.7°F (27.6°C) and 64.8°F (18.2°C).

Temperature

The start of June brings a shift in the average high-temperature, increasing from May's agreeable 72°F (22.2°C) to a warm 81.7°F (27.6°C). During June, the nighttime temperature averages of 64.8°F (18.2°C).

Heat index

For June, the heat index is appraised at a hot 87.8°F (31°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

With an average relative humidity of 81%, June is the most humid month.

Rainfall

The months with the most rainfall are May and June, with an average 1.46" (37mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The month with the longest days is June, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:35 pm. On the last day of June, sunrise is at 5:48 am and sunset at 8:44 pm CDT.

Sunshine

In Sumner, the average sunshine in June is 10.2h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 6 in June transforms into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Updated: Aug 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Sumner during June is 81.7°F (27.6°C) and the low-temperature is 64.8°F (18.2°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in June is appraised at 87.8°F (31°C).

The most humid month is June, with an average relative humidity of 81%.

The average relative humidity in June is 81%.

The wettest months are May and June, with an average 1.46" (37mm) of rainfall.

In June, the rain falls for 12.2 days. Throughout June, 1.46" (37mm) of precipitation is accumulated.

May through September are months without snowfall.

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

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

On the first day of June, sunrise is at 5:46 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:44 pm CDT.

The average sunshine duration in June is 10.2h.

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

In Sumner, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M June J A S O N D

May

June

Jul

Average high temperature

72°F

81.7°F

84.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.9mph

8.2mph

7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

12.3

12.2

10.8

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

13.8

14.2

15.8

Average UV index

Average cloud cover

Average visibility

Average temperature in June
Sumner, MO

Average high temperature in June: 81.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.6°F).

Average low temperature in June: 64.8°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in June
Sumner, MO

Average pressure in June: 29.9"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in June
Sumner, MO

Average wind speed in June: 7.6mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in June
Sumner, MO

Average humidity in June: 81%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (72%).

Average rainfall in June
Sumner, MO

Average rainfall in June: 1.46"

The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is December (0.43").

Average rainfall days in June
Sumner, MO

Average rainfall days in June: 12.2 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (4.2 days).

Average snowfall in June
Sumner, MO

Average snowfall in June: 0"

The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in June
Sumner, MO

Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in June /
Average sunshine in June
Sumner, 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 12min

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 36min).

Average sunshine days in June
Sumner, MO

Average sunshine days in June: 14.2 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).

Average UV index in June
Sumner, 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
Sumner, MO

Average cloud cover in June: 29

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in June
Sumner, 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).