January weather forecast and climate
Mission Viejo, CA

The calm waters on Lake Mission Viejo, California,
The calm waters on Lake Mission Viejo, California,

Weather in January

January, the same as December, is another comfortable winter month in Mission Viejo, California, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 65.5°F (18.6°C).

Temperature

In January, the average high-temperature is relatively the same as in December - a still comfortable 65.5°F (18.6°C). In Mission Viejo, in January, the average low-temperature is 49.6°F (9.8°C).

Humidity

In January, the average relative humidity is 58%.

Rainfall

In Mission Viejo, in January, during 5.4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, in Mission Viejo, there are 64.1 rainfall days, and 5.67" (144mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 10.2h.

Sunshine

In January, the average sunshine is 6.7h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability 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 sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in January in Mission Viejo?

The average high-temperature, in January, in Mission Viejo, is 65.5°F (18.6°C), while the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in January in Mission Viejo?

In Mission Viejo, the average relative humidity in January is 58%.

How much does it rain in Mission Viejo in January?

In Mission Viejo, in January, it is raining for 5.4 days, with typically 0.63" (16mm) of accumulated precipitation.

How many hours of daylight does Mission Viejo have in January?

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

How many hours of sunshine does Mission Viejo have in January?

The average sunshine in January is 6.7h.

When is the lowest UV index in Mission Viejo?

Months with the lowest UV index in Mission Viejo, California, are January through March, November and December, with an average maximum UV index of 4.

What is the UV index reading in January in Mission Viejo?

The average daily maximum UV index in January in Mission Viejo is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in January
Mission Viejo, CA

Average temperature in January - Mission Viejo, CA
  • Average high temperature in January: 65.5°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63°F).

  • Average low temperature in January: 49.6°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in January
Mission Viejo, CA

Average pressure in January - Mission Viejo, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed in January
Mission Viejo, CA

Average wind speed in January - Mission Viejo, CA
  • Average wind speed in January: 5mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in January
Mission Viejo, CA

Average humidity in January - Mission Viejo, CA
  • Average humidity in January: 58%

Months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).

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Average rainfall in January
Mission Viejo, CA

Average rainfall in January - Mission Viejo, CA
  • Average rainfall in January: 0.63"

The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in January
Mission Viejo, CA

Average rainfall days in January - Mission Viejo, CA
  • Average rainfall days in January: 5.4 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.3 days).

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Average daylight in January /
Average sunshine in January
Mission Viejo, CA

Average daylight in January / Average sunshine in January - Mission Viejo, 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: 10h).

  • Average sunshine in January: 6.7h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in January
Mission Viejo, CA

Average sunshine days in January - Mission Viejo, CA
  • Average sunshine days in January: 24.4 days

Months with the most sunshine days are January and August (24.4 days).
The month with the least sunshine days is May (19.5 days).

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Average UV index in January
Mission Viejo, CA

Average UV index in January - Mission Viejo, CA
  • Average UV index in January: 4

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

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Average cloud cover in January
Mission Viejo, CA

Average cloud cover in January - Mission Viejo, CA
  • Average cloud cover in January: 22

Months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in January
Mission Viejo, CA

Average visibility in January - Mission Viejo, 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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