June weather forecastSumas, WA
June
Weather in June
June, the first month of the summer in Sumas, is still a comfortable month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 66.2°F (19°C).Temperature
The onset of June marks an average high-temperature of a still refreshing 66.2°F (19°C), hardly differing from May's 62.6°F (17°C). Sumas throughout June, records an average low-temperature of 46°F (7.8°C).Humidity
The average relative humidity in June in Sumas, Washington, is 76%.Rainfall
In Sumas, in June, it is raining for 13.6 days, with typically 1.73" (44mm) of accumulated precipitation. In Sumas, during the entire year, the rain falls for 188 days and collects up to 49.88" (1267mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The month with the longest days is June, with an average of 16h and 6min of daylight.On the first day of June in Sumas, sunrise is at 5:08 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 9:16 pm PDT.
Sunshine
In Sumas, the average sunshine in June is 9h.UV index
In June, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 4 during June, leads to the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Sumas, WA
- Average high temperature in June: 66.2°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is December (39.6°F).
- Average low temperature in June: 46°F
The month with the highest average low temperature is August (51.4°F).
The coldest months (with the lowest average low temperature) are February and December (31.6°F).
Average pressure in June
Sumas, WA
- Average pressure in June: 30.01"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March and August (30"Hg).
Average wind speed in June
Sumas, WA
- Average wind speed in June: 3.5mph
The windiest months (with the highest average wind speed) are January and February (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in June
Sumas, WA
- Average humidity in June: 76%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is July (73%).
Average rainfall in June
Sumas, WA
- Average rainfall in June: 1.73"
The wettest month (with the highest rainfall) is November (7.72").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in June
Sumas, WA
- Average rainfall days in June: 13.6 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (7.8 days).
Average snowfall in June
Sumas, WA
- Average snowfall in June: 0"
The month with the highest snowfall is February (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in June
Sumas, WA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (4.7 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
Sumas, WA
- Average daylight in June: 16h and 6min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in June: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in June
Sumas, WA
- Average sunshine days in June: 13.5 days
The months with the most sunshine days are July and August (21 days).
The month with the least sunshine days is March (8.4 days).
Average UV index in June
Sumas, WA
- Average UV index in June: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in June
Sumas, WA
- Average cloud cover in June: 46
The month with the most cloud cover is March (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in June
Sumas, WA
- Average visibility in June: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
