June weather forecastPortland, MO
June
Weather in June
The first month of the summer, June, is still a warm month in Portland, Missouri, with an average temperature fluctuating between 65.3°F (18.5°C) and 85.5°F (29.7°C).Temperature
As Portland transitions into June, the average high-temperature is observed to rise from 74.8°F (23.8°C) in May to a still warm 85.5°F (29.7°C). Throughout June, an average nighttime temperature of 65.3°F (18.5°C) is experienced in Portland.Heat index
The heat index value for June is calculated to be a torrid 96.8°F (36°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
The average relative humidity in June in Portland is 76%.Rainfall
In Portland, in June, during 14.6 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In Portland, during the entire year, the rain falls for 139.9 days and collects up to 28.19" (716mm) of precipitation.Snowfall
In Portland, snow does not fall in May through September.Daylight
June has the longest days of the year in Portland, with an average of 14h and 48min of daylight.On the first day of the month, sunrise is at 5:43 am and sunset at 8:26 pm. On the last day of June, sunrise is at 5:45 am and sunset at 8:35 pm CDT.
Sunshine
June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Portland.UV index
The months with the highest UV index in Portland are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 6 in June interprets into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Portland, MO
- Average high temperature in June: 85.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in June: 65.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in June
Portland, MO
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Portland, MO
- Average wind speed in June: 6.9mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in June
Portland, MO
- Average humidity in June: 76%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in June
Portland, MO
- Average rainfall in June: 3.23"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in June
Portland, MO
- Average rainfall days in June: 14.6 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6 days).
Average snowfall in June
Portland, MO
- Average snowfall in June: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Portland, MO
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (5.6 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
Portland, MO
- Average daylight in June: 14h and 48min
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 30min).
- Average sunshine in June: 10h and 24min
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
Portland, MO
- Average sunshine days in June: 13.1 days
The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in June
Portland, 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
Portland, MO
- Average cloud cover in June: 29
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in June
Portland, 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).
