Monthly weather forecast and climate
Pomona, CA

Trails in the rural mountainous region of Pomona, California, with scenic slopes and dense population down below
Trails in the rural mountainous region of Pomona, California, with scenic slopes and dense population down below

Weather in January

January, like December, in Pomona, California, is another enjoyable winter month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 65.5°F (18.6°C). In January, the average high-temperature is practically the same as in December - a still comfortable 65.5°F (18.6°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Pomona, California, with average temperature ranging between max 65.3°F (18.5°C) and min 46.8°F (8.2°C). In February, the average high-temperature is almost the same as in January - a still comfortable 65.3°F (18.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a pleasant month in Pomona, California, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 68.9°F (20.5°C). In March, the average high-temperature is relatively the same as in February - a pleasant 68.9°F (20.5°C). Weather in March »

Weather in April

April, the same as March, in Pomona, California, is an agreeable spring month, with average temperature varying between 50.4°F (10.2°C) and 73°F (22.8°C). In April, the average high-temperature is almost the same as in March - a still pleasant 73°F (22.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Pomona, California, with average temperature varying between 76.3°F (24.6°C) and 54°F (12.2°C). In May, the average high-temperature is essentially the same as in April - a warm 76.3°F (24.6°C). Weather in May »

Weather in June

June, the first month of the summer, in Pomona, is still a warm month, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 58.5°F (14.7°C). In June, the average high-temperature marginally rises, from 76.3°F (24.6°C) in May, to a still warm 82.9°F (28.3°C). Weather in June »

Weather in July

July in Pomona, California, is a hot summer month, with average temperature fluctuating between 88.5°F (31.4°C) and 64°F (17.8°C). In Pomona, the average high-temperature marginally rises, from a warm 82.9°F (28.3°C) in June, to a tropical 88.5°F (31.4°C). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in Pomona, California, with average temperature varying between 65.7°F (18.7°C) and 90.1°F (32.3°C). The warmest month is August, with an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 65.7°F (18.7°C). The average heat index is evaluated at a tropical 92.7°F (33.7°C). Weather in August »

Weather in September

September, the first month of the autumn, in Pomona, is still a hot month, with average temperature ranging between max 87.6°F (30.9°C) and min 64°F (17.8°C). In Pomona, the average high-temperature in September is almost the same as in August - a still hot 87.6°F (30.9°C). Weather in September »

Weather in October

October, like September, in Pomona, California, is another warm autumn month, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 58.6°F (14.8°C). In October, the average high-temperature slightly decreases, from a tropical 87.6°F (30.9°C) in September, to a warm 79.5°F (26.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another pleasant month in Pomona, California, with average temperature varying between 71.4°F (21.9°C) and 52.3°F (11.3°C). In November, the average high-temperature slightly decreases, from a moderately hot 79.5°F (26.4°C) in October, to an agreeable 71.4°F (21.9°C). Weather in November »

Weather in December

December, the first month of the winter, in Pomona, is still a comfortable month, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 46.8°F (8.2°C). December is the coldest month, with an average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 46.8°F (8.2°C). Weather in December »
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FAQ

How much does it rain in Pomona?

In Pomona, California, during the entire year, the rain falls for 48 days and collects up to 7.52" (191mm) of precipitation.

How many days does it snow in Pomona?

In Pomona, during the entire year, snow falls for 0.1 days.

When it does not snow in Pomona?

January, March through December are months without snowfall in Pomona, California.

When is the lowest UV index in Pomona?

Months with the lowest UV index in Pomona, California, are January, February, November and December, with an average maximum UV index of 4.

What is the rainiest month in Pomona?

The wettest months in Pomona are February and December, with an average 1.65" (42mm) of rainfall.

When does it snow in Pomona?

February is the only month when snow falls in Pomona.

When does it snow the most in Pomona?

February has the most snowfall days of the year in Pomona, California. Snow falls for 0.1 days.

What is the month with the least sunshine in Pomona?

February and December, with an average of 6.9h of sunshine, are months with the least sunshine in Pomona.

What is the most humid month in Pomona?

With an average relative humidity of 56%, May is the most humid month in Pomona, California.

What is the driest month in Pomona?

June and August are months with the least rain in Pomona when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

When are the longest days in Pomona?

With an average of 14.4h of daylight, June has the longest days of the year in Pomona, California.

What month has the most sunshine in Pomona?

The month with the most sunshine in Pomona is July, with an average of 12.2h of sunshine.

What is the warmest month in Pomona?

With an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 65.7°F (18.7°C), August is the warmest month in Pomona, California.

What are the least humid months in Pomona?

August and November, with an average relative humidity of 45%, are the least humid months.

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

August is the month with the highest UV index, with an average maximum UV index of 7.

What is the coldest month in Pomona?

The coldest month is December, with an average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 46.8°F (8.2°C).

What is the month with the shortest days in Pomona?

The month with the shortest days in Pomona is December, with an average of 9.9h of daylight.

Average temperature
Pomona, CA

Average temperature - Pomona, CA

The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is December (63.1°F).

The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (46.8°F).

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Average pressure
Pomona, CA

Average pressure - Pomona, CA

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed
Pomona, CA

Average wind speed - Pomona, CA

The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity
Pomona, CA

Average humidity - Pomona, CA

The month with the highest relative humidity is May (56%).
Months with the lowest relative humidity are August and November (45%).

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Average rainfall
Pomona, CA

Average rainfall - Pomona, CA

The wettest months (with the highest rainfall) are February and December (1.65").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days
Pomona, CA

Average rainfall days - Pomona, CA

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (0.8 days).

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Average snowfall days
Pomona, CA

Average snowfall days - Pomona, CA

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight / Average sunshine
Pomona, CA

Average daylight / Average sunshine - Pomona, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

The month with the most sunshine is July (Average sunshine: 12.2h).
Months with the least sunshine are February and December (Average sunshine: 6.9).

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Average sunshine days
Pomona, CA

Average sunshine days - Pomona, CA

The month with the most sunshine days is June (28.7 days).
The month with the least sunshine days is February (21.1 days).

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Average visibility
Pomona, CA

Average visibility - Pomona, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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