Climate and monthly weather forecast
Startup, WA

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Weather in January

January, like December, in Startup, Washington, is another cold winter month, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 29.7°F (-1.3°C). Startup's average high-temperature in January is a still cold 39.9°F (4.4°C), marking an insignificant difference from the 38.3°F (3.5°C) of December. Weather in January »

Weather in February

February, the last month of the winter in Startup, is another cold month, with temperature in the range of an average high of 40.6°F (4.8°C) and an average low of 29.3°F (-1.5°C). With the onset of February, the average high-temperature registers at a still wintry 40.6°F (4.8°C), subtly different from January's 39.9°F (4.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Startup, Washington, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 31.5°F (-0.3°C). The arrival of March brings an average high-temperature of a chilly 45.1°F (7.3°C), subtly diverging from February's 40.6°F (4.8°C). Weather in March »

Weather in April

April is a fresh spring month in Startup, Washington, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 51.1°F (10.6°C). Observing a slight rise in April, the average high-temperature shifts from March's chilly 45.1°F (7.3°C) to a fresh 51.1°F (10.6°C). Weather in April »

Weather in May

May, the last month of the spring in Startup, is a moderate month, with an average temperature varying between 60.4°F (15.8°C) and 40.1°F (4.5°C). May's arrival coincides with a temperature rise, moving from April's fresh 51.1°F (10.6°C) to a moderate 60.4°F (15.8°C). Weather in May »

Weather in June

June, the first month of the summer in Startup, is a refreshing month, with an average temperature fluctuating between 64.9°F (18.3°C) and 43°F (6.1°C). Startup, Washington, observes an average high-temperature of a comfortable 64.9°F (18.3°C) in June, barely different from 60.4°F (15.8°C) in May. Weather in June »

Weather in July

July in Startup, Washington, is an agreeable summer month, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 72.9°F (22.7°C). July brings a slight increase in the average high-temperature, progressing from a comfortable 64.9°F (18.3°C) in June to an agreeable 72.9°F (22.7°C). Weather in July »

Weather in August

August, the last month of the summer in Startup, is a moderately hot month, with an average temperature ranging between min 48°F (8.9°C) and max 73.4°F (23°C). With an average high-temperature of 73.4°F (23°C) and an average low-temperature of 48°F (8.9°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Startup, is still a refreshing month, with an average temperature ranging between max 66.4°F (19.1°C) and min 45°F (7.2°C). The start of September comes with a small reduction in the average high-temperature, subtly receding from a warm 73.4°F (23°C) in August to a refreshing 66.4°F (19.1°C). Weather in September »

Weather in October

October, the same as September, is a cool autumn month in Startup, Washington, with an average temperature varying between 54.5°F (12.5°C) and 40.1°F (4.5°C). With October's onset, the weather shows a temperature decrease, transitioning from a comfortable 66.4°F (19.1°C) in September to a fresh 54.5°F (12.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Startup, is another chilly month, with an average temperature ranging between max 44.6°F (7°C) and min 34.3°F (1.3°C). The commencement of November involves a temperature shift, with the average high-temperature dropping from a fresh 54.5°F (12.5°C) in October to a chilly 44.6°F (7°C). Weather in November »

Weather in December

December, the first month of the winter in Startup, is still a cold month, with an average temperature varying between 38.3°F (3.5°C) and 28.6°F (-1.9°C). December, characterized by an average high temperature of 38.3°F (3.5°C) and a low temperature of 28.6°F (-1.9°C), is generally the coldest month. Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What is the most humid month in Startup?

The months with the highest humidity are January through March, with an average relative humidity of 88%.

What is the rainiest month in Startup?

The month with the most rainfall in Startup, Washington, is January, when the rain falls for 19.5 days and typically aggregates up to 7.8" (198mm) of precipitation.

How much does it rain in Startup?

Throughout the year, in Startup, there are 200.6 rainfall days, and 51.65" (1312mm) of precipitation is accumulated.

When does it snow in Startup?

Months with snowfall in Startup, Washington, are January through April, November and December.

How many days does it snow in Startup?

Throughout the year, in Startup, there are 15.9 snowfall days, and 14.41" (366mm) of snow is accumulated.

What is the month with the least sunshine in Startup?

The months with the least sunshine are January and December, with an average of 3.7h of sunshine.

What is the month with the lowest UV index in Startup?

The months with the lowest UV index in Startup are January through April, October through December, with an average maximum UV index of 2.

When does it snow the most in Startup?

February is the month with the most snowfall in Startup, Washington. Snow falls for 5.2 days and accumulates 5.43" (138mm) of snow.

When is Daylight Saving Time (DST) in Startup?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Startup, 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.

When it does not snow in Startup?

In Startup, Washington, snow does not fall in May through October.

When are the longest days in Startup?

June has the longest days of the year in Startup, Washington, with an average of 16h and 0min of daylight.

What is the least humid month in Startup?

The least humid month is July, with an average relative humidity of 72%.

What is the month with the highest UV index in Startup?

The month with the highest UV index in Startup, Washington, is July, with an average maximum UV index of 5.

What part of the year is the hottest in Startup?

The warmest month in Startup, Washington, is August, with an average high-temperature of 73.4°F (23°C) and an average low-temperature of 48°F (8.9°C).

What is the driest month in Startup?

The month with the least rainfall in Startup is August, when the rain falls for 7.9 days and typically collects 0.79" (20mm) of precipitation.

What month has the most sunshine in Startup?

August has the most sunshine of the year in Startup, with an average of 10.4h of sunshine.

What is the coldest time of year in Startup?

With average high temperatures of 38.3°F (3.5°C) and lows of 28.6°F (-1.9°C), December is the coldest month.

What is the month with the shortest days in Startup?

December has the shortest days of the year in Startup, with an average of 8h and 30min of daylight.

Average temperature
Startup, WA

Average temperature - Startup, WA

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).

The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

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Average pressure
Startup, WA

Average pressure - Startup, WA

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

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Average wind speed
Startup, WA

Average wind speed - Startup, WA

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

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Average humidity
Startup, WA

Average humidity - Startup, WA

The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).

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Average rainfall
Startup, WA

Average rainfall - Startup, WA

The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").

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Average rainfall days
Startup, WA

Average rainfall days - Startup, WA

The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).

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Average snowfall
Startup, WA

Average snowfall - Startup, WA

The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Startup, WA

Average snowfall days - Startup, WA

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).

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Average daylight / Average sunshine
Startup, WA

Average daylight / Average sunshine - Startup, WA

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).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).

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Average sunshine days
Startup, WA

Average sunshine days - Startup, WA

The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).

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Average UV index
Startup, WA

Average UV index - Startup, WA

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average visibility
Startup, WA

Average visibility - Startup, WA

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

[Resources]

Startup, Washington, USA

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