January weather forecast and climate
San Antonio Heights, CA

Weather in January

January, the same as December, is another comfortable winter month in San Antonio Heights, California, with average temperature ranging between min 46.8°F (8.2°C) and max 64.6°F (18.1°C).

Temperature

In San Antonio Heights, the average high-temperature is essentially the same as in December - a still comfortable 64.6°F (18.1°C). In San Antonio Heights, California, the average low-temperature is 46.8°F (8.2°C).

Humidity

The average relative humidity in San Antonio Heights is 49%.

Rainfall

In January, the rain falls for 5.4 days. Throughout January, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in San Antonio Heights, there are 49.6 rainfall days, and 7.8" (198mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall in San Antonio Heights, California.

Daylight

In San Antonio Heights, the average length of the day is 10.2h.

Sunshine

In January, the average sunshine in San Antonio Heights is 7h.

UV index

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in January in San Antonio Heights?

In San Antonio Heights, in January, the average high-temperature is 64.6°F (18.1°C), and the average low-temperature is 46.8°F (8.2°C).

What is the average humidity in January in San Antonio Heights?

In San Antonio Heights, California, the average relative humidity in January is 49%.

How much does it rain in San Antonio Heights in January?

In San Antonio Heights, in January, it is raining for 5.4 days, with typically 1.18" (30mm) of accumulated precipitation.

Does it snow in San Antonio Heights in January?

In San Antonio Heights, in January, it doesn't snow. In February, it regularly snows.

When it does not snow in San Antonio Heights?

In San Antonio Heights snow does not fall in January, March through December.

How many hours of daylight does San Antonio Heights have in January?

In January, the average length of the day is 10.2h.

How many hours of sunshine does San Antonio Heights have in January?

In January, the average sunshine is 7h.

How high is the UV index in January in San Antonio Heights?

In January, the average daily maximum UV index in San Antonio Heights is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in January
San Antonio Heights, CA

Average temperature in January - San Antonio Heights, CA
  • Average high temperature in January: 64.6°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is December (62.1°F).

  • Average low temperature in January: 46.8°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).

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Average pressure in January
San Antonio Heights, CA

Average pressure in January - San Antonio Heights, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in January
San Antonio Heights, CA

Average wind speed in January - San Antonio Heights, CA
  • Average wind speed in January: 5.3mph

The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in January
San Antonio Heights, CA

Average humidity in January - San Antonio Heights, CA
  • Average humidity in January: 49%

Months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in January
San Antonio Heights, CA

Average rainfall in January - San Antonio Heights, CA
  • Average rainfall in January: 1.18"

The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
San Antonio Heights, CA

Average rainfall days in January - San Antonio Heights, CA
  • Average rainfall days in January: 5.4 days

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in January
San Antonio Heights, CA

Average snowfall days in January - San Antonio Heights, CA
  • Average snowfall days in January: 0 days

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 in January /
Average sunshine in January
San Antonio Heights, CA

Average daylight in January / Average sunshine in January - San Antonio Heights, CA
  • Average daylight in January: 10.2h

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

  • Average sunshine in January: 7h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.9).

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Average sunshine days in January
San Antonio Heights, CA

Average sunshine days in January - San Antonio Heights, CA
  • Average sunshine days in January: 24.6 days

The month with the most sunshine days is June (28.2 days).
The month with the least sunshine days is February (21.5 days).

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Average UV index in January
San Antonio Heights, CA

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

Months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
San Antonio Heights, CA

Average cloud cover in January - San Antonio Heights, CA
  • Average cloud cover in January: 19

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in January
San Antonio Heights, CA

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

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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