Climate and monthly weather forecast
Lyman, WA

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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). January's average high-temperature is a still wintry 42.1°F (5.6°C), maintaining a close comparison with December's 40.5°F (4.7°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Lyman, Washington, 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). Entering February, Lyman's average high-temperature reads a still wintry 42.4°F (5.8°C), indicating a close resemblance to the previous month's climate. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Lyman, Washington, with an average temperature varying between 35.1°F (1.7°C) and 46.6°F (8.1°C). March's beginning signals an average high-temperature of a frosty 46.6°F (8.1°C), barely different from February's 42.4°F (5.8°C). Weather in March »

Weather in April

April is a cool spring month in Lyman, Washington, with an average temperature varying between 37.8°F (3.2°C) and 52°F (11.1°C). As Lyman transitions into April, a marginal rise in the average high-temperature is observed, moving from a chilly 46.6°F (8.1°C) in March to a cool 52°F (11.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Lyman, Washington, with an average temperature fluctuating between 42.8°F (6°C) and 60.6°F (15.9°C). A slight uplift in the average high-temperature marks May, adjusting from April's cool 52°F (11.1°C) to a mild 60.6°F (15.9°C). Weather in May »

Weather in June

June, the first month of the summer in Lyman, is a refreshing month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 45.9°F (7.7°C). The shift to June signals an average high-temperature of an enjoyable 64°F (17.8°C), subtly varied from May's 60.6°F (15.9°C). Weather in June »

Weather in July

July in Lyman, Washington, is a pleasant summer month, 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). July, recording an average high temperature of 70.9°F (21.6°C) and a low temperature of 49.1°F (9.5°C), is Lyman's warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in Lyman, Washington, with an average temperature varying between 50.5°F (10.3°C) and 70.7°F (21.5°C). August's average high-temperature stands at a still agreeable 70.7°F (21.5°C), showing little deviation from July's 70.9°F (21.6°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 high of 64.2°F (17.9°C) and an average low of 47.8°F (8.8°C). The advent of September brings a slight shift in average high-temperature, moving from an agreeable 70.7°F (21.5°C) in August to a refreshing 64.2°F (17.9°C). Weather in September »

Weather in October

October, like September, in Lyman, Washington, is another fresh autumn month, with an average temperature ranging between min 42.4°F (5.8°C) and max 55°F (12.8°C). The move into October indicates a reduction in the average high-temperature, down from September's refreshing 64.2°F (17.9°C) to a cool 55°F (12.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Lyman, is another chilly month, with an average temperature ranging between max 45.5°F (7.5°C) and min 37.6°F (3.1°C). November brings a decrease in the average high-temperature, falling from October's cool 55°F (12.8°C) to a chilly 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 Lyman, Washington, with an average temperature varying between 40.5°F (4.7°C) and 32.5°F (0.3°C). December proves to be the coldest month, recording an average maximum temperature of 40.5°F (4.7°C) and a minimum temperature of 32.5°F (0.3°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the most humid months in Lyman?

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

How much does it rain in Lyman?

In Lyman, Washington, during the entire year, the rain falls for 203.2 days and collects up to 49.72" (1263mm) of precipitation.

When does it snow in Lyman?

January through April, November and December are months with snowfall.

How many days does it snow in Lyman?

Throughout the year, in Lyman, Washington, there are 12 snowfall days, and 12.32" (313mm) of snow is accumulated.

When is the lowest UV index in Lyman?

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

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 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.

When it does not snow in Lyman?

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

When are the longest days in Lyman?

The month with the longest days is June, with an average of 16h and 6min of daylight.

What month is the hottest in Lyman?

July is the month when Lyman, Washington, experiences its warmest temperatures, averaging a high of 70.9°F (21.6°C) and a low of 49.1°F (9.5°C).

What is the least humid month in Lyman?

July is the least humid month in Lyman, Washington, with an average relative humidity of 75%.

What is the driest month in Lyman?

The month with the least rainfall in Lyman, Washington, is July, when the rain falls for 9.8 days and typically collects 0.98" (25mm) of precipitation.

When is the highest UV index in Lyman?

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

What month has the most sunshine in Lyman?

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

What is the wettest month in Lyman?

November is the month with the most rainfall in Lyman, Washington. Rain falls for 21.1 days and accumulates 7.09" (180mm) of precipitation.

What time of the year is the coldest in Lyman?

December, characterized by an average high temperature of 40.5°F (4.7°C) and a low temperature of 32.5°F (0.3°C), is generally the coldest month in Lyman.

What is the month with the shortest days in Lyman?

With an average of 8h and 24min of daylight, December has the shortest days of the year in Lyman, Washington.

What is the month with the least sunshine in Lyman?

The month with the least sunshine in Lyman, Washington, is December, 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).

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).

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).

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%).

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").

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).

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").

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).

Average daylight / Average sunshine
Lyman, WA

Average daylight / Average sunshine - Lyman, WA

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).

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
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).

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).

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).

Lyman, Washington, USA

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