Climate and monthly weather forecastCopalis Beach, WA
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Copalis Beach, Washington, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 46.9°F (8.3°C). With the transition into January, Copalis Beach notes an average high-temperature of a still frosty 46.9°F (8.3°C), closely resembling December. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Copalis Beach, Washington, with an average temperature ranging between max 46.9°F (8.3°C) and min 40.1°F (4.5°C). In February, a slight meteorological adjustment is experienced, with average high-temperatures matching those of the previous month. Weather in February »Weather in March
March, the first month of the spring in Copalis Beach, is also a frosty month, with an average temperature varying between 41.5°F (5.3°C) and 49.5°F (9.7°C). Copalis Beach records a slight change with March's average high-temperatures adjusting to a still frosty 49.5°F (9.7°C) from February's 46.9°F (8.3°C). Weather in March »Weather in April
April in Copalis Beach, Washington, is a fresh spring month, with temperature in the range of an average high of 52.3°F (11.3°C) and an average low of 43.9°F (6.6°C). April records an average high-temperature of a fresh 52.3°F (11.3°C), indicating a minor variation from the preceding month. Weather in April »Weather in May
The last month of the spring, May, is a mild month in Copalis Beach, Washington, with an average temperature ranging between max 57.6°F (14.2°C) and min 46.9°F (8.3°C). Copalis Beach experiences a transition to a moderate 57.6°F (14.2°C) in average high-temperatures with the arrival of May, not greatly differing from April's 52.3°F (11.3°C). Weather in May »Weather in June
June, the first month of the summer in Copalis Beach, is an enjoyable month, with an average temperature ranging between max 61.2°F (16.2°C) and min 50.7°F (10.4°C). During June, the average high-temperature is an enjoyable 61.2°F (16.2°C), maintaining a close resemblance to that of the preceding month. Weather in June »Weather in July
July, the same as June, is another comfortable summer month in Copalis Beach, Washington, with an average temperature ranging between max 64.8°F (18.2°C) and min 53.6°F (12°C). As Copalis Beach welcomes July, the average high-temperature records at a still enjoyable 64.8°F (18.2°C), marking an insignificant deviation from the prior month. Weather in July »Weather in August
August, the last month of the summer in Copalis Beach, is another comfortable month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 54.5°F (12.5°C). Copalis Beach's temperature records reveal August as the warmest month, marked by average highs of 65.8°F (18.8°C) and lows of 54.5°F (12.5°C). Weather in August »Weather in September
September, the first month of the autumn in Copalis Beach, is still a comfortable month, with an average temperature varying between 63.7°F (17.6°C) and 52.7°F (11.5°C). Copalis Beach measures an average high-temperature of a still comfortable 63.7°F (17.6°C) in September, nearly consistent with the preceding month. Weather in September »Weather in October
October, like September, is another mild autumn month in Copalis Beach, Washington, with temperature in the range of an average high of 57.7°F (14.3°C) and an average low of 48.7°F (9.3°C). The arrival of October correlates with a minor temperature reduction, down from September's refreshing 63.7°F (17.6°C) to a moderate 57.7°F (14.3°C). Weather in October »Weather in November
November, the last month of the autumn in Copalis Beach, is another cool month, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 44.1°F (6.7°C). The average high-temperature slightly decreases in November, shifting from a refreshing 57.7°F (14.3°C) in October to a fresh 50.7°F (10.4°C). Weather in November »Weather in December
December, the first month of the winter in Copalis Beach, is also a frosty month, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 39.7°F (4.3°C). During the coldest month, December, temperatures average a high of 45.5°F (7.5°C) and a low of 39.7°F (4.3°C). Weather in December »Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 152.8 rainfall days, and 19.41" (493mm) of precipitation is accumulated.
January through March and November are months with snowfall.
Throughout the year, there are 3.3 snowfall days, and 1.38" (35mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 3.5h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall. Snow falls for 1.6 days and accumulates 1.02" (26mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
April through June, with an average relative humidity of 81%, are the least humid months.
In Copalis Beach, snow does not fall in April through October and December.
May through September, with an average maximum UV index of 4, are months with the highest UV index.
June has the longest days of the year, with an average of 15h and 48min of daylight.
The month with the least rainfall is July, when the rain falls for 5.6 days and typically collects 0.24" (6mm) of precipitation.
The month with the most sunshine is July, with an average of 10h of sunshine.
August, known for its average high temperature of 65.8°F (18.8°C) and an average low temperature of 54.5°F (12.5°C), is the warmest month.
December stands out as Copalis Beach's coldest month, with temperatures ranging between an average high of 45.5°F (7.5°C) and a low of 39.7°F (4.3°C).
With an average relative humidity of 85%, December is the most humid month.
The month with the most rainfall is December, when the rain falls for 18.5 days and typically aggregates up to 3.35" (85mm) of precipitation.
December has the shortest days of the year, with an average of 8h and 36min of daylight.
Average temperature
Copalis Beach, WA
The warmest month (with the highest average high temperature) is August (65.8°F).
The month with the lowest average high temperature is December (45.5°F).
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (39.7°F).
Average pressure
Copalis Beach, WA
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.06"Hg - Average pressure in June:
30.07"Hg
- Average pressure in July:
30.08"Hg - Average pressure in August:
30.04"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed
Copalis Beach, WA
- Average wind speed in January:
10.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
7.4mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.4mph - Average wind speed in November:
10.2mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is September (7.1mph).
Average humidity
Copalis Beach, WA
The month with the highest relative humidity is December (85%).
The months with the lowest relative humidity are April, May and June (81%).
Average rainfall
Copalis Beach, WA
- Average rainfall in January:
2.8" - Average rainfall in February:
1.77" - Average rainfall in March:
1.81" - Average rainfall in April:
1.38" - Average rainfall in May:
0.94" - Average rainfall in June:
0.75"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.39" - Average rainfall in September:
1.02" - Average rainfall in October:
2.24" - Average rainfall in November:
2.72" - Average rainfall in December:
3.35"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Copalis Beach, WA
- Average rainfall days in January:
15.7 days - Average rainfall days in February:
14.3 days - Average rainfall days in March:
17.9 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
11.5 days - Average rainfall days in June:
7.8 days
- Average rainfall days in July:
5.6 days - Average rainfall days in August:
5.7 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
14 days - Average rainfall days in November:
16.9 days - Average rainfall days in December:
18.5 days
The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is July (5.6 days).
Average snowfall
Copalis Beach, WA
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days
Copalis Beach, WA
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.6 days - Average snowfall days in March:
0.4 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.4 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Copalis Beach, WA
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
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 January:
3h and 30min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 12min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 0min - Average sunshine in November:
4h and 6min - Average sunshine in December:
3h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Copalis Beach, WA
- Average sunshine days in January:
13.4 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
11.3 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
15.9 days - Average sunshine days in June:
18.6 days
- Average sunshine days in July:
23.8 days - Average sunshine days in August:
21.7 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
15.1 days - Average sunshine days in November:
11.5 days - Average sunshine days in December:
10.7 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is December (10.7 days).
Average UV index
Copalis Beach, WA
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Copalis Beach, WA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Copalis Beach, WA
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
