June weather forecastUnion, WA
June
Weather in June
June, the first month of the summer in Union, is a pleasant month, with an average temperature fluctuating between 45.5°F (7.5°C) and 68.5°F (20.3°C).Temperature
Union marks the start of June with an average high-temperature of a pleasant 68.5°F (20.3°C), hinting at a slight fluctuation from May's 63.9°F (17.7°C). Union in June observes a substantial swing from the daily highs, with average nighttime temperatures of 45.5°F (7.5°C).Humidity
In June, the average relative humidity in Union is 76%.Rainfall
In June, the rain falls for 11.9 days. Throughout June, 1.3" (33mm) of precipitation is accumulated. In Union, during the entire year, the rain falls for 185.4 days and collects up to 42.87" (1089mm) of precipitation.Snowfall
In Union, snow does not fall in April through October.Daylight
June has the longest days of the year in Union, with an average of 15h and 54min of daylight.On the first day of June in Union, Washington, sunrise is at 5:19 am and sunset at 9:01 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 9:12 pm PDT.
Sunshine
In June, the average sunshine is 9.5h.UV index
June and July, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In June, a daily maximum UV index of 5 leads to the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Union, WA
- Average high temperature in June: 68.5°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in June: 45.5°F
The month with the highest average low temperature is August (50.4°F).
The coldest month (with the lowest average low temperature) is February (32.7°F).
Average pressure in June
Union, WA
- Average pressure in June: 30.05"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in June
Union, WA
- Average wind speed in June: 4mph
The windiest month (with the highest average wind speed) is March (4.3mph).
The calmest month (with the lowest average wind speed) is September (3.4mph).
Average humidity in June
Union, WA
- Average humidity in June: 76%
The months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is July (72%).
Average rainfall in June
Union, WA
- Average rainfall in June: 1.3"
The wettest month (with the highest rainfall) is January (7.24").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in June
Union, WA
- Average rainfall days in June: 11.9 days
The month with the highest number of rainy days is March (21.4 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in June
Union, WA
- Average snowfall in June: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in June
Union, WA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in June /
Average sunshine in June
Union, WA
- Average daylight in June: 15h and 54min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in June: 9h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in June
Union, WA
- Average sunshine days in June: 15.4 days
The month with the most sunshine days is July (21.7 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in June
Union, WA
- Average UV index in June: 5
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in June
Union, WA
- Average cloud cover in June: 47
The months with the most cloud cover are January and December (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in June
Union, WA
- Average visibility in June: 5mi
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).





