Climate and monthly weather forecast
Lyman, WA

Weather in January

January, like December, in Lyman, Washington, is a wintry winter month, with an average temperature ranging between max 42.1°F (5.6°C) and min 33.6°F (0.9°C). In January, the average high-temperature is relatively the same as in December - a still cold 42.1°F (5.6°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Lyman, Washington, with an average temperature ranging between min 32.5°F (0.3°C) and max 42.4°F (5.8°C). In Lyman, the average high-temperature in February is practically the same as in January - a still wintry 42.4°F (5.8°C). Weather in February »

Weather in March

March, the first month of the spring in Lyman, is a chilly month, with temperature in the range of an average high of 46.6°F (8.1°C) and an average low of 35.1°F (1.7°C). In Lyman, the average high-temperature in March is relatively the same as in February - a frosty 46.6°F (8.1°C). Weather in March »

Weather in April

April in Lyman, Washington, is a cool spring month, with an average temperature fluctuating between 37.8°F (3.2°C) and 52°F (11.1°C). In April, the average high-temperature marginally rises from a frosty 46.6°F (8.1°C) in March to a cool 52°F (11.1°C). Weather in April »

Weather in May

May, the last month of the spring in Lyman, is a mild month, with an average temperature ranging between min 42.8°F (6°C) and max 60.6°F (15.9°C). In Lyman, the average high-temperature in May slightly increases from a fresh 52°F (11.1°C) in April to a mild 60.6°F (15.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Lyman, Washington, with an average temperature varying between 64°F (17.8°C) and 45.9°F (7.7°C). In Lyman, the average high-temperature in June is practically the same as in May - an enjoyable 64°F (17.8°C). Weather in June »

Weather in July

July is an agreeable summer month in Lyman, Washington, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 49.1°F (9.5°C). With an average high-temperature of 70.9°F (21.6°C) and an average low-temperature of 49.1°F (9.5°C), July is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in Lyman, Washington, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 70.7°F (21.5°C). In Lyman, the average high-temperature in August is essentially the same as in July - a still agreeable 70.7°F (21.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Lyman, is also an enjoyable month, 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). In Lyman, the average high-temperature in September slightly decreases from an agreeable 70.7°F (21.5°C) in August to an enjoyable 64.2°F (17.9°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Lyman, Washington, with temperature in the range of an average high of 55°F (12.8°C) and an average low of 42.4°F (5.8°C). In October, the average high-temperature drops from a comfortable 64.2°F (17.9°C) in September to a fresh 55°F (12.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Lyman, Washington, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 37.6°F (3.1°C). In Lyman, the average high-temperature in November drops from a cool 55°F (12.8°C) in October to a chilly 45.5°F (7.5°C). Weather in November »

Weather in December

December, the first month of the winter in Lyman, is also a wintry month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 40.5°F (4.7°C). December is the coldest month, with an average high-temperature of 40.5°F (4.7°C) and an average low-temperature of 32.5°F (0.3°C). Weather in December »
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FAQ

What are the most humid months in Lyman?

January through March, with an average relative humidity of 86%, are most humid months in Lyman.

How many days does it rain in Lyman?

Throughout the year, there are 203.2 rainfall days, and 49.72" (1263mm) of precipitation is accumulated.

When does it snow in Lyman?

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

How much does it snow in Lyman?

In Lyman, during the entire year, snow falls for 12 days and aggregates up to 12.32" (313mm) of snow.

When is the lowest UV index in Lyman?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Lyman, Washington.

What is the snowiest month in Lyman?

The month with the most snowfall in Lyman is February, when snow falls for 4.3 days and typically aggregates up to 4.96" (126mm) of snow.

When is Daylight Saving Time (DST) in Lyman?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Lyman, Washington, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Lyman?

In Lyman, snow does not fall in May through October.

When are the longest days in Lyman?

June has the longest days of the year, with an average of 16h and 4min of daylight.

What is the warmest month in Lyman?

The warmest month is July, with an average high-temperature of 70.9°F (21.6°C) and an average low-temperature of 49.1°F (9.5°C).

What is the least humid month in Lyman?

The least humid month is July, with an average relative humidity of 75%.

What is the driest month in Lyman?

July is the month with the least rainfall in Lyman. Rain falls for 9.8 days and accumulates 0.98" (25mm) of precipitation.

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

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

What month has the most sunshine in Lyman?

With an average of 10.3h of sunshine, August has the most sunshine of the year in Lyman.

What is the wettest month in Lyman?

The month with the most rainfall in Lyman is November, when the rain falls for 21.1 days and typically aggregates up to 7.09" (180mm) of precipitation.

What is the coldest month in Lyman?

December is the coldest month in Lyman, Washington, with an average high-temperature of 40.5°F (4.7°C) and an average low-temperature of 32.5°F (0.3°C).

What is the month with the shortest days in Lyman?

With an average of 8h and 23min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Lyman?

December has the least sunshine of the year, with an average of 3.5h of sunshine.

Average temperature
Lyman, WA

Average temperature - Lyman, 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).

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Average pressure
Lyman, WA

Average pressure - Lyman, WA

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed
Lyman, WA

Average wind speed - Lyman, WA

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).

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Average humidity
Lyman, WA

Average humidity - Lyman, WA

The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is July (75%).

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Average rainfall
Lyman, WA

Average rainfall - Lyman, WA

The wettest month (with the highest rainfall) is November (7.09").
The driest month (with the least rainfall) is July (0.98").

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Average rainfall days
Lyman, WA

Average rainfall days - Lyman, WA

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).

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Average snowfall
Lyman, WA

Average snowfall - Lyman, 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").

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Average snowfall days
Lyman, WA

Average snowfall days - Lyman, WA

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).

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Average daylight / Average sunshine
Lyman, WA

Average daylight / Average sunshine - Lyman, WA

The month with the longest days is June (Average daylight: 16h and 4min).
The month with the shortest days is December (Average daylight: 8h and 23min).

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).

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Average sunshine days
Lyman, WA

Average sunshine days - Lyman, WA

The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (7.3 days).

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Average UV index
Lyman, WA

Average UV index - Lyman, 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).

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Average visibility
Lyman, WA

Average visibility - Lyman, 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).

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