January weather forecastJulian, CA
January
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
Julian transitions into January recording an average high-temperature of a still comfortable 63.9°F (17.7°C), closely aligning with the preceding month's temperature. Throughout January, the temperature tends to fall to a consistent average low of 45°F (7.2°C).Humidity
In January, the average relative humidity is 53%.Rainfall
In January, in Julian, the rain falls for 5.1 days. Throughout January, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 62 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Julian, in January, 4.02" (102mm) of snow is typically accumulated. Throughout the year, 22.01" (559mm) of snow is accumulated.Daylight
In Julian, the average length of the day in January is 10h and 16min.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.
Sunshine
In January, the average sunshine in Julian is 6.9h.UV index
In Julian, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 in January translates into this advice:
Act with care - The need to guard against sun damage is communicated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
Average daylight in January /
Average sunshine in January
Julian, CA
- Average daylight in January: 10h and 18min
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 54min
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).
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).
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).
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).
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).
