Monthly weather forecast and climate
Signal Hill, CA

Weather in January

January, like December, in Signal Hill, California, is another comfortable winter month, with average temperature fluctuating between 52.9°F (11.6°C) and 65.1°F (18.4°C). In January, the average high-temperature is almost the same as in December - a still enjoyable 65.1°F (18.4°C). Weather in January »

Weather in February

The last month of the winter, February, is also an enjoyable month in Signal Hill, California, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 52°F (11.1°C). In Signal Hill, the average high-temperature in February is essentially the same as in January - a still enjoyable 64°F (17.8°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Signal Hill, California, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 53.1°F (11.7°C). In Signal Hill, the average high-temperature is almost the same as in February - a still comfortable 66.4°F (19.1°C). Weather in March »

Weather in April

April is an agreeable spring month in Signal Hill, California, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 68.5°F (20.3°C). In April, the average high-temperature is practically the same as in March - a pleasant 68.5°F (20.3°C). Weather in April »

Weather in May

The last month of the spring, May, is also an agreeable month in Signal Hill, California, with average temperature ranging between max 70°F (21.1°C) and min 57°F (13.9°C). In May, the average high-temperature is almost the same as in April - a still pleasant 70°F (21.1°C). Weather in May »

Weather in June

The first month of the summer, June, is still a pleasant month in Signal Hill, California, with average temperature fluctuating between 59.2°F (15.1°C) and 73°F (22.8°C). In Signal Hill, the average high-temperature is essentially the same as in May - a still pleasant 73°F (22.8°C). Weather in June »

Weather in July

July is a warm summer month in Signal Hill, California, with average temperature fluctuating between 77.5°F (25.3°C) and 63.5°F (17.5°C). In Signal Hill, the average high-temperature is almost the same as in June - a warm 77.5°F (25.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Signal Hill, California, with average temperature fluctuating between 79.5°F (26.4°C) and 64.9°F (18.3°C). The warmest month is August, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 64.9°F (18.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Signal Hill, California, with average temperature varying between 78.8°F (26°C) and 64.8°F (18.2°C). In September, the average high-temperature is practically the same as in August - a still warm 78.8°F (26°C). Weather in September »

Weather in October

October, like September, in Signal Hill, California, is another warm autumn month, with average temperature ranging between max 75°F (23.9°C) and min 62.2°F (16.8°C). In Signal Hill, California, the average high-temperature is relatively the same as in September - a still warm 75°F (23.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Signal Hill, California, with average temperature ranging between max 70°F (21.1°C) and min 57.4°F (14.1°C). In Signal Hill, California, the average high-temperature in November is relatively the same as in October - a pleasant 70°F (21.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also an enjoyable month in Signal Hill, California, with average temperature fluctuating between 63.5°F (17.5°C) and 52.7°F (11.5°C). The coldest month is December, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.7°F (11.5°C). Weather in December »
[Resources]

FAQ

How much does it rain in Signal Hill?

In Signal Hill, during the entire year, the rain falls for 47.2 days and collects up to 5.59" (142mm) of precipitation.

What is the month with the least sunshine in Signal Hill?

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Signal Hill.

What is the month with the lowest UV index in Signal Hill?

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

What is the most humid month in Signal Hill?

With an average relative humidity of 71%, June is the most humid month.

What is the driest month in Signal Hill?

June is the month with the least rainfall in Signal Hill, California. Rain falls for 1.8 days and accumulates 0.08" (2mm) of precipitation.

When are the longest days in Signal Hill?

June has the longest days of the year in Signal Hill, California, with an average of 14.4h of daylight.

What are the months with the highest UV index in Signal Hill?

Months with the highest UV index in Signal Hill are June through September, with an average maximum UV index of 6.

What is the month with the most sunshine in Signal Hill?

Months with the most sunshine in Signal Hill, California, are July and August, with an average of 12h of sunshine.

What is the warmest month in Signal Hill?

August is the warmest month, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 64.9°F (18.3°C).

What is the least humid month in Signal Hill?

The least humid month is November, with an average relative humidity of 55%.

What is the coldest month in Signal Hill?

December is the coldest month in Signal Hill, California, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.7°F (11.5°C).

What is the wettest month in Signal Hill?

December is the month with the most rainfall in Signal Hill, California. Rain falls for 5.1 days and accumulates 1.14" (29mm) of precipitation.

What is the month with the shortest days in Signal Hill?

December has the shortest days of the year in Signal Hill, California, with an average of 9.9h of daylight.

Average pressure
Signal Hill, CA

Average pressure - Signal Hill, CA

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.89").

[Resources]

Average wind speed
Signal Hill, CA

Average wind speed - Signal Hill, CA

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5mph).

[Resources]

Average rainfall
Signal Hill, CA

Average rainfall - Signal Hill, CA

The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.08").

[Resources]

Average rainfall days
Signal Hill, CA

Average rainfall days - Signal Hill, CA

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (1.8 days).

[Resources]

Average daylight / Average sunshine
Signal Hill, CA

Average daylight / Average sunshine - Signal Hill, 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).

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January, February and December (Average sunshine: 6.8).

[Resources]

Average sunshine days
Signal Hill, CA

Average sunshine days - Signal Hill, CA

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is June (20.8 days).

[Resources]

Average UV index
Signal Hill, CA

Average UV index - Signal Hill, CA

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

[Resources]

Average visibility
Signal Hill, CA

Average visibility - Signal Hill, 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).

[Resources]