January weather forecast
Hacienda Heights, CA

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Weather in January

January, like December, in Hacienda Heights, California, is another comfortable winter month, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 50.5°F (10.3°C).

Temperature

With the transition into January, Hacienda Heights notes an average high-temperature of a still refreshing 67.5°F (19.7°C), closely resembling December. Hacienda Heights, during January, witnesses an average low-temperature of 50.5°F (10.3°C).

Humidity

In January, the average relative humidity is 50%.

Rainfall

In Hacienda Heights, in January, during 4.7 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Hacienda Heights, during the entire year, the rain falls for 40.9 days and collects up to 6.3" (160mm) of precipitation.

Daylight

The average length of the day in January is 10h and 12min.
On the first day of January, sunrise is at 6:57 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 5:21 pm PST.

Sunshine

The average sunshine in January in Hacienda Heights is 6.8h.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Hacienda Heights. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 4 in January translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the average January temperature in Hacienda Heights?

The high-temperature, in January, in Hacienda Heights, records 67.5°F (19.7°C), while the low-temperature is 50.5°F (10.3°C).

What is the average humidity in January in Hacienda Heights?

The average relative humidity in January is 50%.

How many days does it rain in January in Hacienda Heights?

In Hacienda Heights, California, during January, the rain falls for 4.7 days and regularly aggregates up to 1.06" (27mm) of precipitation.

What is the average length of the day in January in Hacienda Heights?

In January, the average day length in Hacienda Heights, California, is 10h and 12min.

What time are sunrise and sunset in January in Hacienda Heights?

In January, on the first day of the month, sunrise is at 6:57 am and sunset at 4:53 pm. On the last day of the month, in Hacienda Heights, California, sunrise is at 6:49 am and sunset at 5:21 pm PST.

How long on average sun shines in January in Hacienda Heights?

In Hacienda Heights, the average sunshine duration in January is 6.8h.

What are the months with the lowest UV index in Hacienda Heights?

The months with the lowest UV index in Hacienda Heights, California, are January, February, November and December, with an average maximum UV index of 4.

What is the UV index reading in January in Hacienda Heights?

The average daily maximum UV index in January in Hacienda Heights, California, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Hacienda Heights, CA

Average temperature in January - Hacienda Heights, CA
  • Average high temperature in January: 67.5°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is December (64.9°F).

  • Average low temperature in January: 50.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (49.3°F).

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Average pressure in January
Hacienda Heights, CA

Average pressure in January - Hacienda Heights, CA
  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in January
Hacienda Heights, CA

Average wind speed in January - Hacienda Heights, CA
  • Average wind speed in January: 5.4mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

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Average humidity in January
Hacienda Heights, CA

Average humidity in January - Hacienda Heights, CA
  • Average humidity in January: 50%

The month with the highest relative humidity is June (60%).
The month with the lowest relative humidity is November (47%).

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Average rainfall in January
Hacienda Heights, CA

Average rainfall in January - Hacienda Heights, CA
  • Average rainfall in January: 1.06"

The wettest month (with the highest rainfall) is December (1.46").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in January
Hacienda Heights, CA

Average rainfall days in January - Hacienda Heights, CA
  • Average rainfall days in January: 4.7 days

The month with the highest number of rainy days is March (5.8 days).
The month with the least rainy days is June (1.2 days).

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Average daylight in January /
Average sunshine in January
Hacienda Heights, CA

Average daylight in January / Average sunshine in January - Hacienda Heights, CA
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in January: 6h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in January
Hacienda Heights, CA

Average sunshine days in January - Hacienda Heights, CA
  • Average sunshine days in January: 25.8 days

The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is February (22.6 days).

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Average UV index in January
Hacienda Heights, CA

Average UV index in January - Hacienda Heights, CA
  • Average UV index in January: 4

The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in January
Hacienda Heights, CA

Average cloud cover in January - Hacienda Heights, CA
  • Average cloud cover in January: 21

The months with the most cloud cover are February, March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in January
Hacienda Heights, CA

Average visibility in January - Hacienda Heights, CA
  • Average visibility in January: 6mi

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

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Hacienda Heights, California, USA

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