Climate and monthly weather forecastSnohomish, WA
Climate and monthly weather forecast
Weather in January
January is a chilly winter month in Snohomish, Washington, with an average temperature fluctuating between 44.1°F (6.7°C) and 34.7°F (1.5°C). Upon the onset of January, Snohomish witnesses an average high-temperature of a frosty 44.1°F (6.7°C), showing a close resemblance to the prior month. Weather in January »Weather in February
February, the last month of the winter in Snohomish, is another chilly month, with an average temperature varying between 45°F (7.2°C) and 34.2°F (1.2°C). As February takes its course, Snohomish's average high-temperature registers at a still frosty 45°F (7.2°C), closely aligning with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is also a frosty month in Snohomish, Washington, with an average temperature fluctuating between 49.5°F (9.7°C) and 36.5°F (2.5°C). Snohomish marks the arrival of March with an average high-temperature of a still frosty 49.5°F (9.7°C), hardly different from February's 45°F (7.2°C). Weather in March »Weather in April
April in Snohomish, Washington, is a cool spring month, with an average temperature varying between 54.9°F (12.7°C) and 39.2°F (4°C). April's arrival coincides with a marginal rise in the average high-temperature, moving from March's frosty 49.5°F (9.7°C) to a cool 54.9°F (12.7°C). Weather in April »Weather in May
May, the last month of the spring in Snohomish, is an enjoyable month, with temperature in the range of an average high of 63.3°F (17.4°C) and an average low of 43.5°F (6.4°C). Observing a slight rise in May, the average high-temperature shifts from April's fresh 54.9°F (12.7°C) to a comfortable 63.3°F (17.4°C). Weather in May »Weather in June
The first month of the summer, June, is also an enjoyable month in Snohomish, Washington, with an average temperature varying between 46.8°F (8.2°C) and 67.8°F (19.9°C). The advent of June brings an average high-temperature of a still refreshing 67.8°F (19.9°C), almost identical to the preceding month. Weather in June »Weather in July
July is a warm summer month in Snohomish, Washington, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 50.5°F (10.3°C). July signifies a subtle uplift in the average high-temperature, adjusting from a refreshing 67.8°F (19.9°C) in June to a moderately hot 73.9°F (23.3°C). Weather in July »Weather in August
August, the last month of the summer in Snohomish, is also a moderately hot month, with an average temperature fluctuating between 74.7°F (23.7°C) and 51.8°F (11°C). The warmest month is August, with an average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 51.8°F (11°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Snohomish, Washington, with an average temperature ranging between max 68.2°F (20.1°C) and min 49.1°F (9.5°C). As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 74.7°F (23.7°C) to an agreeable 68.2°F (20.1°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Snohomish, Washington, with an average temperature varying between 43.9°F (6.6°C) and 57.7°F (14.3°C). With the onset of October, Snohomish's average high-temperature adjusts, receding from September's agreeable 68.2°F (20.1°C) to a refreshing 57.7°F (14.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Snohomish, Washington, with an average temperature ranging between max 48°F (8.9°C) and min 38.5°F (3.6°C). November involves a decrease in temperature, down from a mild 57.7°F (14.3°C) in October to a frosty 48°F (8.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Snohomish, Washington, with an average temperature ranging between min 33.6°F (0.9°C) and max 42.3°F (5.7°C). The coldest month is December, with an average high-temperature of 42.3°F (5.7°C) and an average low-temperature of 33.6°F (0.9°C). Weather in December »Updated: Aug 18, 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, February, November and December, with an average relative humidity of 85%, are most humid months.
In Snohomish, during the entire year, the rain falls for 140.3 days and collects up to 15.12" (384mm) of precipitation.
January through April, November and December are months with snowfall.
In Snohomish, during the entire year, snow falls for 7.7 days and aggregates up to 3.5" (89mm) of snow.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the most snowfall. Snow falls for 2.7 days and accumulates 1.38" (35mm) 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 Snohomish, snow does not fall in May through October.
The month with the longest days is June, with an average of 16h and 0min of daylight.
July is the least humid month, with an average relative humidity of 72%.
July is the month with the highest UV index, with an average maximum UV index of 5.
August, with its average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 51.8°F (11°C), holds the record as the warmest month.
August is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.28" (7mm) of precipitation.
With an average of 10.6h of sunshine, August has the most sunshine of the year in Snohomish.
December, with average temperatures reaching a high of 42.3°F (5.7°C) and a low of 33.6°F (0.9°C), is the coldest month.
December is the month with the most rainfall. Rain falls for 13.8 days and accumulates 2.17" (55mm) of precipitation.
With an average of 8h and 30min of daylight, December has the shortest days of the year in Snohomish.
With an average of 4h of sunshine, December has the least sunshine of the year.
Average temperature
Snohomish, WA
The warmest month (with the highest average high temperature) is August (74.7°F).
The month with the lowest average high temperature is December (42.3°F).
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).
Average pressure
Snohomish, WA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
30.02"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:
30.04"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Snohomish, WA
- Average wind speed in January:
5.3mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.5mph - 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:
3.4mph - Average wind speed in September:
3.8mph - Average wind speed in October:
4.4mph - Average wind speed in November:
5.2mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity
Snohomish, WA
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (72%).
Average rainfall
Snohomish, WA
- Average rainfall in January:
2.05" - Average rainfall in February:
1.54" - Average rainfall in March:
1.61" - Average rainfall in April:
1.38" - Average rainfall in May:
0.94" - Average rainfall in June:
0.79"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.28" - Average rainfall in September:
0.83" - Average rainfall in October:
1.57" - Average rainfall in November:
1.65" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is December (2.17").
The driest month (with the least rainfall) is August (0.28").
Average rainfall days
Snohomish, WA
- Average rainfall days in January:
15 days - Average rainfall days in February:
12 days - Average rainfall days in March:
15.8 days - Average rainfall days in April:
15 days - Average rainfall days in May:
10.9 days - Average rainfall days in June:
10.2 days
- Average rainfall days in July:
6.8 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
8.8 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
14.8 days - Average rainfall days in December:
13.8 days
The month with the highest number of rainy days is March (15.8 days).
The month with the least rainy days is August (4.8 days).
Average snowfall
Snohomish, WA
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Snohomish, WA
- Average snowfall days in January:
1.7 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
1.2 days - Average snowfall days in April:
0.3 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:
0.5 days - Average snowfall days in December:
1.3 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Snohomish, WA
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 6min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 24min - Average sunshine in November:
4h and 24min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days
Snohomish, WA
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
12.9 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
16.6 days - Average sunshine days in June:
16.6 days
- Average sunshine days in July:
22.4 days - Average sunshine days in August:
24 days - Average sunshine days in September:
19.7 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
15.1 days
The month with the most sunshine days is August (24 days).
The month with the least sunshine days is April (12.3 days).
Average UV index
Snohomish, WA
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Snohomish, WA
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Snohomish, WA
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, November and December (5mi).
