Climate and monthly weather forecast
Pomona, WA

Share

Weather in January

January, like December, in Pomona, Washington, is another cold winter month, with an average temperature ranging between max 36.1°F (2.3°C) and min 25.5°F (-3.6°C). Pomona's average high-temperature in January sits at a still cold 36.1°F (2.3°C), showing little difference from the previous month. Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Pomona, Washington, with temperature in the range of an average high of 40.6°F (4.8°C) and an average low of 28°F (-2.2°C). Pomona experiences an average high-temperature of a still icy 40.6°F (4.8°C) in February, marking an insignificant shift from 36.1°F (2.3°C) in January. Weather in February »

Weather in March

March, the first month of the spring in Pomona, is a chilly month, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 33.4°F (0.8°C). The start of March brings a subtle rise in the average high-temperature, moving from an icy 40.6°F (4.8°C) in February to a frosty 48.6°F (9.2°C). Weather in March »

Weather in April

April in Pomona, Washington, is a moderate spring month, with an average temperature ranging between min 38.7°F (3.7°C) and max 57.4°F (14.1°C). The transition from March to April brings a subtle temperature rise, with average high-temperatures increasing from a frosty 48.6°F (9.2°C) to a refreshing 57.4°F (14.1°C). Weather in April »

Weather in May

May, the last month of the spring in Pomona, is an enjoyable month, with an average temperature varying between 46.2°F (7.9°C) and 67.8°F (19.9°C). An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a moderate 57.4°F (14.1°C) to a still refreshing 67.8°F (19.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Pomona, Washington, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 51.3°F (10.7°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from an enjoyable 67.8°F (19.9°C) in May to a warm 74.8°F (23.8°C). Weather in June »

Weather in July

July, like June, in Pomona, Washington, is another warm summer month, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 57.7°F (14.3°C). The transition to July introduces an increase in the average high-temperature, shifting from a moderately hot 74.8°F (23.8°C) in June to a still warm 84.7°F (29.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Pomona, Washington, with an average temperature varying between 85.1°F (29.5°C) and 58.8°F (14.9°C). In Pomona, August is the warmest month, with temperatures averaging a high of 85.1°F (29.5°C) and a low of 58.8°F (14.9°C). The heat index value for August is evaluated at 84.2°F (29°C). Weather in August »

Weather in September

September, the first month of the autumn in Pomona, is still a warm month, with an average temperature ranging between max 74.1°F (23.4°C) and min 51.8°F (11°C). The start of September signals a decrease in the average high-temperature, transitioning from 85.1°F (29.5°C) in August to a still moderately hot 74.1°F (23.4°C). Weather in September »

Weather in October

October, the same as September, in Pomona, Washington, is another refreshing autumn month, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 41.7°F (5.4°C). October's arrival witnesses a distinct temperature drop, receding from September's moderately hot 74.1°F (23.4°C) to a refreshing 59.2°F (15.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Pomona, is also a frosty month, with an average temperature varying between 45.5°F (7.5°C) and 32°F (0°C). Transition from October to November is accompanied by a temperature drop, with average high-temperatures decreasing from a mild 59.2°F (15.1°C) to a frosty 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 Pomona, Washington, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 36°F (2.2°C). December, with an average high of 36°F (2.2°C) and a low of 23.9°F (-4.5°C), signifies the coldest month of the year. Weather in December »
[Resources]

Frequently asked questions

What is the most humid month in Pomona?

With an average relative humidity of 83%, January is the most humid month.

How many days does it rain in Pomona?

Throughout the year, in Pomona, there are 87.6 rainfall days, and 5.94" (151mm) of precipitation is accumulated.

When does it snow in Pomona?

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

How much does it snow in Pomona?

In Pomona, Washington, during the entire year, snow falls for 19.9 days and aggregates up to 8.62" (219mm) of snow.

What is the month with the least sunshine in Pomona?

The month with the least sunshine in Pomona, Washington, is January, with an average of 5.5h of sunshine.

What are the months with the lowest UV index in Pomona?

The months with the lowest UV index in Pomona, Washington, are January, February, November and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Pomona?

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

May through August and October are months without snowfall in Pomona.

When are the longest days in Pomona?

The month with the longest days in Pomona is June, with an average of 15h and 48min of daylight.

What is the least humid month in Pomona?

The months with the lowest humidity in Pomona, Washington, are July and August, with an average relative humidity of 41%.

What is the driest month in Pomona?

The month with the least rainfall in Pomona, Washington, is July, when the rain falls for 2.3 days and typically collects 0.08" (2mm) of precipitation.

What is the month with the most sunshine in Pomona?

July and August, with an average of 12.1h of sunshine, are months with the most sunshine in Pomona, Washington.

When is the highest UV index in Pomona?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the warmest month in Pomona?

The warmest temperatures occur during August, when averages reach a peak of 85.1°F (29.5°C) and a low of 58.8°F (14.9°C).

What are the coldest months in Pomona?

With its average high temperature of 36°F (2.2°C) and a low of 23.9°F (-4.5°C), December is regarded as the coldest month in Pomona.

What is the wettest month in Pomona?

December is the month with the most rainfall in Pomona. Rain falls for 9.2 days and accumulates 0.87" (22mm) of precipitation.

What is the snowiest month in Pomona?

The month with the most snowfall is December, when snow falls for 5.7 days and typically aggregates up to 3.07" (78mm) of snow.

What is the month with the shortest days in Pomona?

The month with the shortest days in Pomona, Washington, is December, with an average of 8h and 36min of daylight.

Average temperature
Pomona, WA

Average temperature - Pomona, WA

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

[Resources]

Average pressure
Pomona, WA

Average pressure - Pomona, WA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

[Resources]

Average wind speed
Pomona, WA

Average wind speed - Pomona, WA

The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

[Resources]

Average humidity
Pomona, WA

Average humidity - Pomona, WA

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).

[Resources]

Average rainfall
Pomona, WA

Average rainfall - Pomona, WA

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").

[Resources]

Average rainfall days
Pomona, WA

Average rainfall days - Pomona, WA

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).

[Resources]

Average snowfall
Pomona, WA

Average snowfall - Pomona, WA

The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").

[Resources]

Average snowfall days
Pomona, WA

Average snowfall days - Pomona, WA

The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

[Resources]

Average daylight / Average sunshine
Pomona, WA

Average daylight / Average sunshine - Pomona, WA

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

[Resources]

Average sunshine days
Pomona, WA

Average sunshine days - Pomona, WA

The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).

[Resources]

Average visibility
Pomona, WA

Average visibility - Pomona, 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).

[Resources]

Pomona, Washington, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location