June weather forecastMattawa, WA
June
Weather in June
The first month of the summer, June, is a moderately hot month in Mattawa, Washington, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 54.1°F (12.3°C).Temperature
June showcases a minor temperature ascent, adjusting from May's pleasant 71.2°F (21.8°C) to a moderately hot 78.6°F (25.9°C). Mattawa's average low-temperature for the month of June denotes a significant decline from the daily high, recording at a cool 54.1°F (12.3°C).Humidity
In June, the average relative humidity is 45%.Rainfall
In Mattawa, in June, it is raining for 5.5 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 86.4 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
May through August and October are months without snowfall.Daylight
With an average of 15h and 48min of daylight, June has the longest days of the year.On the first day of the month, sunrise is at 5:08 am and sunset at 8:46 pm. On the last day of June, sunrise is at 5:09 am and sunset at 8:57 pm PDT.
Sunshine
In June, the average sunshine is 11.5h.UV index
In June, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: In June, a daily maximum UV index of 6 leads to the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Mattawa, WA
- Average high temperature in June: 78.6°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in June: 54.1°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).
Average pressure in June
Mattawa, WA
- Average pressure in June: 29.93"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in June
Mattawa, WA
- Average wind speed in June: 7.2mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in June
Mattawa, WA
- Average humidity in June: 45%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in June
Mattawa, WA
- Average rainfall in June: 0.43"
The wettest months (with the highest rainfall) are January and December (0.87").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in June
Mattawa, WA
- Average rainfall days in June: 5.5 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in June
Mattawa, WA
- Average snowfall in June: 0"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in June
Mattawa, WA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in June /
Average sunshine in June
Mattawa, WA
- Average daylight in June: 15h and 48min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in June: 11h and 30min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in June
Mattawa, WA
- Average sunshine days in June: 23 days
The months with the most sunshine days are July and August (25.8 days).
The month with the least sunshine days is February (16 days).
Average UV index in June
Mattawa, WA
- Average UV index in June: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in June
Mattawa, WA
- Average cloud cover in June: 20
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in June
Mattawa, WA
- Average visibility in June: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
