Climate and monthly weather forecastOnion Creek, WA
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Onion Creek, Washington, with an average temperature fluctuating between 16.2°F (-8.8°C) and 29.8°F (-1.2°C). Entering January, the average high-temperature is recorded at a still freezing cold 29.8°F (-1.2°C), exhibiting a minimal shift from December's 28.9°F (-1.7°C). Weather in January »Weather in February
February, the last month of the winter in Onion Creek, is an icy month, with temperature in the range of an average low of 16°F (-8.9°C) and an average high of 32°F (0°C). Onion Creek experiences a recorded average high-temperature of an icy 32°F (0°C) in February, closely aligned with January's 29.8°F (-1.2°C). Weather in February »Weather in March
The first month of the spring, March, is also an icy month in Onion Creek, Washington, with an average temperature fluctuating between 39.9°F (4.4°C) and 24.6°F (-4.1°C). The onset of March marks a slight increase in the average high-temperature, moving from an icy 32°F (0°C) in February to a still wintry 39.9°F (4.4°C). Weather in March »Weather in April
April in Onion Creek, Washington, is a fresh spring month, with an average temperature fluctuating between 51.6°F (10.9°C) and 30.6°F (-0.8°C). April sees a rise in the average high-temperature, climbing from a wintry 39.9°F (4.4°C) in March to a fresh 51.6°F (10.9°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Onion Creek, Washington, with an average temperature ranging between min 38.1°F (3.4°C) and max 64°F (17.8°C). The start of May brings a shift in the average high-temperature, increasing from April's cool 51.6°F (10.9°C) to an enjoyable 64°F (17.8°C). Weather in May »Weather in June
June, the first month of the summer in Onion Creek, is an agreeable month, with an average temperature varying between 43.2°F (6.2°C) and 70.2°F (21.2°C). June's arrival coincides with a marginal rise in the average high-temperature, moving from May's comfortable 64°F (17.8°C) to a pleasant 70.2°F (21.2°C). Weather in June »Weather in July
July is a moderately hot summer month in Onion Creek, Washington, with an average temperature fluctuating between 49.6°F (9.8°C) and 80.6°F (27°C). In July, the meteorological conditions change with the average high-temperature moving from a pleasant 70.2°F (21.2°C) in June to a warm 80.6°F (27°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Onion Creek, Washington, with an average temperature varying between 81.1°F (27.3°C) and 50.5°F (10.3°C). August, marked by an average high-temperature of 81.1°F (27.3°C) and a low-temperature of 50.5°F (10.3°C), is the warmest month. During August, the heat index is calculated to be 82.4°F (28°C). Weather in August »Weather in September
September, the first month of the autumn in Onion Creek, is still a pleasant month, with an average temperature varying between 69.8°F (21°C) and 42.8°F (6°C). With September's arrival, Onion Creek's weather changes as the average high-temperature falls from a moderately hot 81.1°F (27.3°C) in August to an agreeable 69.8°F (21°C). Weather in September »Weather in October
October, the same as September, is a cool autumn month in Onion Creek, Washington, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 52.7°F (11.5°C). Onion Creek experiences a noticeable temperature shift with the start of October, with average high-temperatures moving from an agreeable 69.8°F (21°C) in September to a fresh 52.7°F (11.5°C). Weather in October »Weather in November
November, the last month of the autumn in Onion Creek, is also an icy month, with an average temperature varying between 24.8°F (-4°C) and 37.6°F (3.1°C). November's arrival is marked by a notable drop in high-temperatures, falling from a fresh 52.7°F (11.5°C) in October to a wintry 37.6°F (3.1°C). Weather in November »Weather in December
December, the first month of the winter in Onion Creek, is also a subzero cold month, with an average temperature ranging between max 28.9°F (-1.7°C) and min 16.9°F (-8.4°C). Onion Creek records the coldest temperatures in December, averaging a high of 28.9°F (-1.7°C) and a low of 16.9°F (-8.4°C). Weather in December »Updated: Feb 14, 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
With an average relative humidity of 94%, January is the most humid month.
In Onion Creek, during the entire year, the rain falls for 156.3 days and collects up to 16.18" (411mm) of precipitation.
Months with snowfall are January through April, September through December.
The month with the most snowfall is January, when snow falls for 11.7 days and typically aggregates up to 6.61" (168mm) of snow.
In Onion Creek, during the entire year, snow falls for 53.2 days and aggregates up to 25.16" (639mm) of snow.
The month with the least sunshine is January, with an average of 3.8h of sunshine.
The months with the lowest UV index in Onion Creek are January, February, November and December, with an average maximum UV index of 1.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Onion Creek, 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.
May is the month with the most rainfall. Rain falls for 16.4 days and accumulates 1.93" (49mm) of precipitation.
May through August are months without snowfall in Onion Creek.
With an average of 16h and 6min of daylight, June has the longest days of the year.
July is the month with the highest UV index in Onion Creek, with an average maximum UV index of 6.
Onion Creek's warmest month, August, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 50.5°F (10.3°C).
With an average relative humidity of 50%, August is the least humid month in Onion Creek.
The month with the least rainfall in Onion Creek is August, when the rain falls for 6.1 days and typically collects 0.39" (10mm) of precipitation.
August has the most sunshine of the year, with an average of 12h of sunshine.
In Onion Creek, December is known for its average lowest temperatures, reaching a high of 28.9°F (-1.7°C) and a low of 16.9°F (-8.4°C).
December has the shortest days of the year, with an average of 8h and 18min of daylight.
Average temperature
Onion Creek, WA
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure
Onion Creek, WA
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed
Onion Creek, WA
- Average wind speed in January:
3mph - Average wind speed in February:
3mph - Average wind speed in March:
3.6mph - Average wind speed in April:
3.9mph - Average wind speed in May:
3.7mph - Average wind speed in June:
3.6mph
- Average wind speed in July:
3.5mph - Average wind speed in August:
3.4mph - Average wind speed in September:
3.4mph - Average wind speed in October:
3.3mph - Average wind speed in November:
3.3mph - Average wind speed in December:
3mph
The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).
Average humidity
Onion Creek, WA
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall
Onion Creek, WA
- Average rainfall in January:
1.54" - Average rainfall in February:
1.14" - Average rainfall in March:
1.81" - Average rainfall in April:
1.46" - Average rainfall in May:
1.93" - Average rainfall in June:
1.73"
- Average rainfall in July:
0.67" - Average rainfall in August:
0.39" - Average rainfall in September:
1.02" - Average rainfall in October:
1.26" - Average rainfall in November:
1.61" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days
Onion Creek, WA
- Average rainfall days in January:
13.3 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
18.4 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
16.4 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
8.3 days - Average rainfall days in August:
6.1 days - Average rainfall days in September:
10.2 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
15.6 days - Average rainfall days in December:
11.7 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall
Onion Creek, WA
The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days
Onion Creek, WA
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
7.1 days - Average snowfall days in April:
1.8 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:
0.3 days - Average snowfall days in October:
0.4 days - Average snowfall days in November:
6.4 days - Average snowfall days in December:
13.7 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Onion Creek, WA
- Average daylight in January:
8h and 48min - Average daylight in February:
10h and 12min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 18min - Average daylight in June:
16h and 6min
- Average daylight in July:
15h and 42min - Average daylight in August:
14h and 18min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 12min - Average daylight in December:
8h and 18min
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 January:
3h and 48min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 54min - Average sunshine in April:
9h and 30min - Average sunshine in May:
10h and 42min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 12min - Average sunshine in October:
6h and 24min - Average sunshine in November:
4h and 48min - Average sunshine in December:
4h and 18min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Onion Creek, WA
- Average sunshine days in January:
11.9 days - Average sunshine days in February:
10.2 days - Average sunshine days in March:
9 days - Average sunshine days in April:
9.3 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
20 days - Average sunshine days in August:
20.8 days - Average sunshine days in September:
17.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
10.3 days - Average sunshine days in December:
12.3 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).
Average UV index
Onion Creek, WA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Onion Creek, WA
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility
Onion Creek, WA
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
