Climate and monthly weather forecastMill Creek, WA
Climate and monthly weather forecast
Weather in January
January in Mill Creek, Washington, is a frosty winter month, with an average temperature ranging between min 36.7°F (2.6°C) and max 45°F (7.2°C). The beginning of January reveals an average high-temperature of a chilly 45°F (7.2°C), showing minimal deviation from the previous month. Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Mill Creek, Washington, with an average temperature ranging between min 36°F (2.2°C) and max 45.5°F (7.5°C). The onset of February notes an average high-temperature of a still frosty 45.5°F (7.5°C), subtly shifted from January's 45°F (7.2°C). Weather in February »Weather in March
March, the first month of the spring in Mill Creek, is also a frosty month, with an average temperature varying between 38.1°F (3.4°C) and 49.5°F (9.7°C). The shift from February to March is characterized by an average high-temperature of a still chilly 49.5°F (9.7°C), not significantly different from the 45.5°F (7.5°C) of February. Weather in March »Weather in April
April in Mill Creek, Washington, is a fresh spring month, with an average temperature fluctuating between 54.9°F (12.7°C) and 41.2°F (5.1°C). Mill Creek's weather in April presents a minor rise in the average high-temperature, moving from a chilly 49.5°F (9.7°C) in March to a fresh 54.9°F (12.7°C). Weather in April »Weather in May
May, the last month of the spring in Mill Creek, is an enjoyable month, with temperature in the range of an average high of 62.6°F (17°C) and an average low of 45.3°F (7.4°C). The arrival of May witnesses a small shift in the average high-temperature, moving from a cool 54.9°F (12.7°C) in April to a refreshing 62.6°F (17°C). Weather in May »Weather in June
June, the first month of the summer in Mill Creek, is still a comfortable month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 66.7°F (19.3°C). Transitioning from May to June, Mill Creek observes an average high-temperature of a still comfortable 66.7°F (19.3°C), differing subtly from the previous month. Weather in June »Weather in July
July in Mill Creek, Washington, is a pleasant summer month, with temperature in the range of an average low of 52.5°F (11.4°C) and an average high of 72.1°F (22.3°C). July's onset brings a minor rise in the average high-temperature, moving from a refreshing 66.7°F (19.3°C) in June to an agreeable 72.1°F (22.3°C). Weather in July »Weather in August
August, the last month of the summer in Mill Creek, is another pleasant month, with an average temperature varying between 54°F (12.2°C) and 72.7°F (22.6°C). August is the month when Mill Creek experiences its warmest temperatures, averaging a high of 72.7°F (22.6°C) and a low of 54°F (12.2°C). Weather in August »Weather in September
September, the first month of the autumn in Mill Creek, is still a refreshing month, with an average temperature ranging between min 51.4°F (10.8°C) and max 67.1°F (19.5°C). September's onset introduces a mild reduction in the average high-temperature, from an agreeable 72.7°F (22.6°C) in August to a refreshing 67.1°F (19.5°C). Weather in September »Weather in October
October, the same as September, in Mill Creek, Washington, is another refreshing autumn month, with temperature in the range of an average low of 45.9°F (7.7°C) and an average high of 57.6°F (14.2°C). October shows a mild decline in the average high-temperature, falling from September's refreshing 67.1°F (19.5°C) to a mild 57.6°F (14.2°C). Weather in October »Weather in November
November, the last month of the autumn in Mill Creek, is another chilly month, with an average temperature ranging between min 40.1°F (4.5°C) and max 48°F (8.9°C). The commencement of November involves a temperature shift, with the average high-temperature dropping from a mild 57.6°F (14.2°C) in October to a frosty 48°F (8.9°C). Weather in November »Weather in December
December, the first month of the winter in Mill Creek, is also a wintry month, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 42.6°F (5.9°C). Mill Creek experiences its lowest average temperatures in December, reaching a peak of 42.6°F (5.9°C) and a minimum of 35.4°F (1.9°C). Weather in December »Updated: Aug 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Mill Creek, during the entire year, the rain falls for 173.1 days and collects up to 26.02" (661mm) of precipitation.
Months with snowfall are January through April, November and December.
In Mill Creek, during the entire year, snow falls for 16.3 days and aggregates up to 10.08" (256mm) of snow.
January has the least sunshine of the year, with an average of 4.4h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
The months with the highest humidity are February and December, with an average relative humidity of 84%.
The month with the most snowfall is February, when snow falls for 5.2 days and typically aggregates up to 4.61" (117mm) 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.
May through October are months without snowfall.
The month with the longest days is June, with an average of 16h and 0min of daylight.
The least humid month is July, with an average relative humidity of 72%.
The month with the least rainfall is July, when the rain falls for 7.7 days and typically collects 0.43" (11mm) of precipitation.
July is the month with the highest UV index, with an average maximum UV index of 5.
With average temperatures fluctuating between a high of 72.7°F (22.6°C) and a low of 54°F (12.2°C), August stands out as the warmest month in Mill Creek.
With an average of 10.7h of sunshine, August has the most sunshine of the year.
December, known for its average high temperature of 42.6°F (5.9°C) and an average low temperature of 35.4°F (1.9°C), is the coldest month.
December is the month with the most rainfall. Rain falls for 18.1 days and accumulates 3.54" (90mm) of precipitation.
With an average of 8h and 30min of daylight, December has the shortest days of the year.
Average temperature
Mill Creek, WA
The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is December (42.6°F).
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.4°F).
Average pressure
Mill Creek, 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:
30.04"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
30.02"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30.01"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:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed
Mill Creek, WA
- Average wind speed in January:
6mph - Average wind speed in February:
5.5mph - Average wind speed in March:
6mph - Average wind speed in April:
5.2mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.7mph - Average wind speed in August:
3.6mph - Average wind speed in September:
4.2mph - Average wind speed in October:
5mph - Average wind speed in November:
6.2mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity
Mill Creek, WA
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (72%).
Average rainfall
Mill Creek, WA
- Average rainfall in January:
3.43" - Average rainfall in February:
2.8" - Average rainfall in March:
2.76" - Average rainfall in April:
2.13" - Average rainfall in May:
1.61" - Average rainfall in June:
1.18"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.47" - Average rainfall in September:
1.5" - Average rainfall in October:
2.72" - Average rainfall in November:
3.46" - Average rainfall in December:
3.54"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Mill Creek, WA
- Average rainfall days in January:
18 days - Average rainfall days in February:
15.8 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
7.7 days - Average rainfall days in August:
6.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
15.5 days - Average rainfall days in November:
18.7 days - Average rainfall days in December:
18.1 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall
Mill Creek, WA
The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Mill Creek, WA
- Average snowfall days in January:
2.7 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
3.2 days - Average snowfall days in April:
1.1 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:
0.9 days - Average snowfall days in December:
3.2 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mill Creek, 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 24min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 24min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 42min - Average sunshine in December:
4h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Mill Creek, WA
- Average sunshine days in January:
10.6 days - Average sunshine days in February:
9.2 days - Average sunshine days in March:
9.6 days - Average sunshine days in April:
9.7 days - Average sunshine days in May:
15.4 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
21.8 days - Average sunshine days in August:
22.6 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
13.6 days - Average sunshine days in November:
9.1 days - Average sunshine days in December:
10.7 days
The month with the most sunshine days is August (22.6 days).
The month with the least sunshine days is November (9.1 days).
Average UV index
Mill Creek, 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
Mill Creek, WA
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility
Mill Creek, WA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
