Climate and monthly weather forecastSedro-Woolley, WA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Sedro-Woolley, Washington, with an average temperature fluctuating between 42.1°F (5.6°C) and 33.6°F (0.9°C). Sedro-Woolley starts January with an average high-temperature of a still cold 42.1°F (5.6°C), hinting at a minimal fluctuation from December. Weather in January »Weather in February
February, the last month of the winter in Sedro-Woolley, is another cold month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 42.4°F (5.8°C). February's onset records an average high-temperature of a still icy 42.4°F (5.8°C), a near match to January's 42.1°F (5.6°C). Weather in February »Weather in March
March, the first month of the spring in Sedro-Woolley, is a chilly month, with an average temperature fluctuating between 46.6°F (8.1°C) and 35.1°F (1.7°C). The transition into March is marked with an average high-temperature of a frosty 46.6°F (8.1°C), showing an insignificant shift from February's 42.4°F (5.8°C). Weather in March »Weather in April
April in Sedro-Woolley, Washington, is a cool spring month, with an average temperature varying between 37.8°F (3.2°C) and 52°F (11.1°C). The arrival of April witnesses a small shift in the average high-temperature, moving from a chilly 46.6°F (8.1°C) in March to a fresh 52°F (11.1°C). Weather in April »Weather in May
The last month of the spring, May, is a moderate month in Sedro-Woolley, Washington, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 42.8°F (6°C). A gentle upsurge in temperatures occurs as April gives way to May, with average highs shifting from a fresh 52°F (11.1°C) to a moderate 60.6°F (15.9°C). Weather in May »Weather in June
June, the first month of the summer in Sedro-Woolley, is a comfortable month, with an average temperature ranging between max 64°F (17.8°C) and min 45.9°F (7.7°C). The dawn of June sees an average high-temperature of an enjoyable 64°F (17.8°C), subtly contrasting with May's 60.6°F (15.9°C). Weather in June »Weather in July
July is an agreeable summer month in Sedro-Woolley, Washington, with an average temperature fluctuating between 49.1°F (9.5°C) and 70.9°F (21.6°C). July, with average temperatures reaching a high of 70.9°F (21.6°C) and a low of 49.1°F (9.5°C), is the warmest month. Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in Sedro-Woolley, Washington, with temperature in the range of an average high of 70.7°F (21.5°C) and an average low of 50.5°F (10.3°C). Sedro-Woolley experiences an average high-temperature of a still agreeable 70.7°F (21.5°C) with the onset of August, subtly varied from July's 70.9°F (21.6°C). Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in Sedro-Woolley, Washington, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 64.2°F (17.9°C). September's onset introduces a mild reduction in the average high-temperature, from an agreeable 70.7°F (21.5°C) in August to a comfortable 64.2°F (17.9°C). Weather in September »Weather in October
October, like September, in Sedro-Woolley, Washington, is another fresh autumn month, with an average temperature varying between 55°F (12.8°C) and 42.4°F (5.8°C). The start of October signals a decrease in the average high-temperature, transitioning from an enjoyable 64.2°F (17.9°C) in September to a fresh 55°F (12.8°C). Weather in October »Weather in November
November, the last month of the autumn in Sedro-Woolley, is also a frosty month, with an average temperature ranging between min 37.6°F (3.1°C) and max 45.5°F (7.5°C). Onset of November witnesses a reduction in the average high-temperature, falling from a fresh 55°F (12.8°C) in October to a frosty 45.5°F (7.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Sedro-Woolley, Washington, with an average temperature varying between 32.5°F (0.3°C) and 40.5°F (4.7°C). December, having an average high-temperature of 40.5°F (4.7°C) and an average low-temperature of 32.5°F (0.3°C), is the coldest month. Weather in December »Updated: Aug 12, 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
January through March, with an average relative humidity of 86%, are most humid months.
Throughout the year, there are 203.2 rainfall days, and 49.72" (1263mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
Throughout the year, there are 12 snowfall days, and 12.32" (313mm) of snow is accumulated.
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 4.3 days and typically aggregates up to 4.96" (126mm) 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.
In Sedro-Woolley, snow does not fall in May through October.
With an average of 16h and 6min of daylight, June has the longest days of the year in Sedro-Woolley.
July, recognised by an average high temperature of 70.9°F (21.6°C) and a low of 49.1°F (9.5°C), is Sedro-Woolley's warmest month.
July is the least humid month in Sedro-Woolley, with an average relative humidity of 75%.
July is the month with the least rainfall. Rain falls for 9.8 days and accumulates 0.98" (25mm) of precipitation.
The month with the highest UV index is July, with an average maximum UV index of 5.
With an average of 10.3h of sunshine, August has the most sunshine of the year.
The month with the most rainfall is November, when the rain falls for 21.1 days and typically aggregates up to 7.09" (180mm) of precipitation.
Sedro-Woolley reaches its average lowest temperatures in December, measuring 40.5°F (4.7°C) at the peak and 32.5°F (0.3°C) at the lowest.
December has the shortest days of the year, with an average of 8h and 24min of daylight.
With an average of 3.5h of sunshine, December has the least sunshine of the year.
Average temperature
Sedro-Woolley, WA
The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (40.5°F).
The month with the highest average low temperature is August (50.5°F).
The coldest months (with the lowest average low temperature) are February and December (32.5°F).
Average pressure
Sedro-Woolley, WA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
30.01"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Sedro-Woolley, WA
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.4mph - Average wind speed in April:
4.7mph - Average wind speed in May:
3.9mph - Average wind speed in June:
3.7mph
- Average wind speed in July:
3.5mph - Average wind speed in August:
3.3mph - Average wind speed in September:
3.8mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.5mph
The windiest month (with the highest average wind speed) is November (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity
Sedro-Woolley, WA
The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is July (75%).
Average rainfall
Sedro-Woolley, WA
- Average rainfall in January:
6.54" - Average rainfall in February:
5.12" - Average rainfall in March:
5.55" - Average rainfall in April:
4.17" - Average rainfall in May:
2.91" - Average rainfall in June:
2.24"
- Average rainfall in July:
0.98" - Average rainfall in August:
1.14" - Average rainfall in September:
2.76" - Average rainfall in October:
5.16" - Average rainfall in November:
7.09" - Average rainfall in December:
6.06"
The wettest month (with the highest rainfall) is November (7.09").
The driest month (with the least rainfall) is July (0.98").
Average rainfall days
Sedro-Woolley, WA
- Average rainfall days in January:
18.8 days - Average rainfall days in February:
17.3 days - Average rainfall days in March:
22.1 days - Average rainfall days in April:
20.8 days - Average rainfall days in May:
16.1 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
9.8 days - Average rainfall days in August:
9.4 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
17.7 days - Average rainfall days in November:
21.1 days - Average rainfall days in December:
20.6 days
The month with the highest number of rainy days is March (22.1 days).
The month with the least rainy days is August (9.4 days).
Average snowfall
Sedro-Woolley, WA
The month with the highest snowfall is February (4.96").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Sedro-Woolley, WA
- Average snowfall days in January:
2.6 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
2.1 days - Average snowfall days in April:
0.2 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:
0.7 days - Average snowfall days in December:
2.1 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Sedro-Woolley, WA
- Average daylight in January:
8h and 54min - 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 36min - 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 24min
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 24min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 12min - Average sunshine in April:
7h and 12min - Average sunshine in May:
8h and 36min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 6min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 30min
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 30min).
Average sunshine days
Sedro-Woolley, WA
- Average sunshine days in January:
9.9 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
7.3 days - Average sunshine days in April:
7.4 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
18.8 days - Average sunshine days in August:
19.2 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
12.4 days - Average sunshine days in November:
7.8 days - Average sunshine days in December:
9 days
The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (7.3 days).
Average UV index
Sedro-Woolley, WA
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Sedro-Woolley, WA
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Sedro-Woolley, WA
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (5mi).
