January weather forecast and climate
Sierra Vista, CA

Weather in January

January, like December, is another mild winter month in Sierra Vista, California, with average temperature fluctuating between 42.4°F (5.8°C) and 58.8°F (14.9°C).

Temperature

In January, the average high-temperature is practically the same as in December - a still mild 58.8°F (14.9°C). In Sierra Vista, the average low-temperature is 42.4°F (5.8°C).

Humidity

With an average relative humidity of 68%, January is the most humid month.

Rainfall

In January, the rain falls for 6.2 days. Throughout January, 1.02" (26mm) of precipitation is accumulated. In Sierra Vista, California, during the entire year, the rain falls for 51 days and collects up to 7.56" (192mm) of precipitation.

Daylight

In Sierra Vista, California, the average length of the day is 10h.

Sunshine

The average sunshine in Sierra Vista is 6.5h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 in January interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 most humid month in Sierra Vista?

January is the most humid month in Sierra Vista, with an average relative humidity of 68%.

What is the average humidity in January in Sierra Vista?

In Sierra Vista, California, the average relative humidity in January is 68%.

How many days does it rain in January in Sierra Vista?

In January, in Sierra Vista, the rain falls for 6.2 days. Throughout January, 1.02" (26mm) of precipitation is accumulated.

What is the average length of the day in January in Sierra Vista?

The average length of the day in January in Sierra Vista, California, is 10h.

How many hours of sunshine does Sierra Vista have in January?

In Sierra Vista, California, the average sunshine in January is 6.5h.

What are the months with the lowest UV index in Sierra Vista?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Sierra Vista, California.

What is the UV index reading in January in Sierra Vista?

In January, the average daily maximum UV index in Sierra Vista, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in January
Sierra Vista, CA

Average temperature in January - Sierra Vista, CA
  • Average high temperature in January: 58.8°F

The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in January: 42.4°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

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Average pressure in January
Sierra Vista, CA

Average pressure in January - Sierra Vista, CA
  • Average pressure in January: 30.15"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in January
Sierra Vista, CA

Average wind speed in January - Sierra Vista, CA
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

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Average humidity in January
Sierra Vista, CA

Average humidity in January - Sierra Vista, CA
  • Average humidity in January: 68%

The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (31%).

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Average rainfall in January
Sierra Vista, CA

Average rainfall in January - Sierra Vista, CA
  • Average rainfall in January: 1.02"

The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in January
Sierra Vista, CA

Average rainfall days in January - Sierra Vista, CA
  • Average rainfall days in January: 6.2 days

The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (0.8 days).

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Average daylight in January /
Average sunshine in January
Sierra Vista, CA

Average daylight in January / Average sunshine in January - Sierra Vista, CA
  • Average daylight in January: 10h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in January: 6.5h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.2h).

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Average sunshine days in January
Sierra Vista, CA

Average sunshine days in January - Sierra Vista, CA
  • Average sunshine days in January: 24.5 days

The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.5 days).

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Average UV index in January
Sierra Vista, CA

Average UV index in January - Sierra Vista, CA
  • Average UV index in January: 3

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Sierra Vista, CA

Average cloud cover in January - Sierra Vista, CA
  • Average cloud cover in January: 28

Months with the most cloud cover are March and December (Cloud cover 30).
Months with the least cloud cover are July, August and September (Cloud cover 5).

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Average visibility in January
Sierra Vista, CA

Average visibility in January - Sierra Vista, 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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