January weather forecast
Julian, CA

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Weather in January

The beginning of the year in Julian, California, is marked by chilly weather. January experiences lower temperatures than subsequent months, showing a noticeable difference from February's slight warmth. Additionally, this month boasts of a high incidence of snowfall, with accumulation reaching up to 4" (102mm). Compared to December, the daylight hours are slightly truncated but the sunshine hours are relatively the same. It is a wonderful time to snuggle up indoors, as the city frequently drifts into a serene winter scene.

Temperature

January's weather in Julian records an average high-temperature of a still comfortable 63.9°F (17.7°C), showing little deviation from December. In January, the average low-temperature in Julian records at a frosty 45°F (7.2°C) during the nights.

Humidity

In January, the average relative humidity in Julian is 53%.

Rainfall

In Julian, during January, the rain falls for 5.1 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 62 rainfall days, and 6.38" (162mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Julian are January through May, November and December. Throughout January, 4.02" (102mm) of snow is accumulated. In Julian, during the entire year, snow aggregates up to 22.01" (559mm).

Daylight

In January, the average length of the day in Julian is 10h and 16min.
On the first day of the month, sunrise is at 6:49 am and sunset at 4:50 pm. On the last day of January, in Julian, sunrise is at 6:42 am and sunset at 5:17 pm PST.

Sunshine

In Julian, the average sunshine in January is 6.9h.

UV index

The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 4 during January, leads to the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

What are the temperatures in Julian in January?

The high-temperature, in January, in Julian, is 63.9°F (17.7°C), while the low-temperature averages to 45°F (7.2°C).

What is the average humidity in January in Julian?

In January, the average relative humidity is 53%.

How many days does it rain in January in Julian?

In January, in Julian, California, the rain falls for 5.1 days. Throughout January, 0.75" (19mm) of precipitation is accumulated.

How much does it snow in Julian in January?

During January, Julian regularly aggregates up to 4.02" (102mm) of snow.

What is the average length of the day in January in Julian?

In Julian, the average day length in January is 10h and 16min.

When is the sunrise / sunset in January in Julian?

On the first day of January, sunrise is at 6:49 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 5:17 pm PST.

How many hours of sunshine does Julian have in January?

The average sunshine duration in January in Julian is 6.9h.

What is the UV index intensity in January in Julian?

In Julian, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Julian, CA

Average temperature in January - Julian, CA
  • Average high temperature in January: 63.9°F

The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is December (61.3°F).

  • Average low temperature in January: 45°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (44.2°F).

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Average pressure in January
Julian, CA

Average pressure in January - Julian, CA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in January
Julian, CA

Average wind speed in January - Julian, CA
  • Average wind speed in January: 5.1mph

The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).

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Average humidity in January
Julian, CA

Average humidity in January - Julian, CA
  • Average humidity in January: 53%

The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).

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Average rainfall in January
Julian, CA

Average rainfall in January - Julian, CA
  • Average rainfall in January: 0.75"

The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in January
Julian, CA

Average rainfall days in January - Julian, CA
  • Average rainfall days in January: 5.1 days

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (1.5 days).

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Average snowfall in January
Julian, CA

Average snowfall in January - Julian, CA
  • Average snowfall in January: 4"

The month with the highest snowfall is March (6.7").
The months with the least snowfall are June, July, August, September and October (0").

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Average daylight in January /
Average sunshine in January
Julian, CA

Average daylight in January / Average sunshine in January - Julian, CA
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 6h and 5min

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

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Average sunshine days in January
Julian, CA

Average sunshine days in January - Julian, CA
  • Average sunshine days in January: 24.3 days

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.4 days).

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Average UV index in January
Julian, CA

Average UV index in January - Julian, CA
  • Average UV index in January: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in January
Julian, CA

Average cloud cover in January - Julian, CA
  • Average cloud cover in January: 20

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in January
Julian, CA

Average visibility in January - Julian, 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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Julian, California, USA

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