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Contents
- The climate of Julian
- The best time to visit Julian
- The worst time to visit Julian
- Spring weather in Julian
- Summer weather in Julian
- Autumn weather in Julian
- Winter weather in Julian
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Julian
Julian, California, USA possesses a Mediterranean, hot summer climate, classified as 'Csa' according to the Köppen climate system. It is nestled within Southern California, an area renowned for its diverse weather conditions; it ranges from coastal to inland, and from valley to mountain weather patterns.
Julian experiences a range of contrasting temperatures between high and low throughout the year, from high temperatures that range from 61.3°F (16.3°C) to a peak of 87.3°F (30.7°C), and low temperatures from the region of 44.2°F (6.8°C) to 64.9°F (18.3°C). Year-round, atmospheric pressure remains fairly stable, varying from 29.85inHg (1010.8mbar) to 30.09inHg (1019mbar). The highest humidity is around the 62% mark with the lowest at 52% accounting for negligible variation.
On a noteworthy note, Julian receives annual snowfall with accumulations ranging from 0" (0mm) in the warm months up to a substantial 6.7" (170mm) in peak cold months. In comparison, rainfall fluctuates between a mere 0.08" (2mm) to a maximum of 0.94" (24mm). The wind exhibits a pattern of slight ups and downs. From the start of the year, it gradually picks up speed reaching 5.7mph (9.2km/h) in May then slowing down to 4.1mph (6.6km/h) in September.
Julian experiences a range of contrasting temperatures between high and low throughout the year, from high temperatures that range from 61.3°F (16.3°C) to a peak of 87.3°F (30.7°C), and low temperatures from the region of 44.2°F (6.8°C) to 64.9°F (18.3°C). Year-round, atmospheric pressure remains fairly stable, varying from 29.85inHg (1010.8mbar) to 30.09inHg (1019mbar). The highest humidity is around the 62% mark with the lowest at 52% accounting for negligible variation.
On a noteworthy note, Julian receives annual snowfall with accumulations ranging from 0" (0mm) in the warm months up to a substantial 6.7" (170mm) in peak cold months. In comparison, rainfall fluctuates between a mere 0.08" (2mm) to a maximum of 0.94" (24mm). The wind exhibits a pattern of slight ups and downs. From the start of the year, it gradually picks up speed reaching 5.7mph (9.2km/h) in May then slowing down to 4.1mph (6.6km/h) in September.
The best time to visit Julian
If clear skies and warm weather are the objective, summer is the optimal choice for a visit to Julian. It's when the temperatures reach their peak, from 81.3°F (27.4°C) in June, gradually escalating to heights of 87.3°F (30.7°C) in August. The skies are usually clear with only 6-9% cloud coverage, and the average daytime UV index hovers between 5 to 6, revealing that one might need sufficient protection against the intense sunlight.
The worst time to visit Julian
The time conjuring the most difficulty for visitors would be the colder months of December through February. Julian tends to sway towards the cooler side, with low average temperatures dipping to around 44.2°F (6.8°C). However, for those tackling the cold, the corresponding charm of this period lies within the 4 to 6.7" (170mm) of snowfall that tends to grace the town.
Spring weather in Julian
Spring in Julian rolls in with a gentle breath of moderate temperatures, averaging from a high of 63.3°F (17.4°C) to 73.6°F (23.1°C), and lows ranging from 44.2°F (6.8°C) up to 51.3°F (10.7°C). The rainfall decreases substantially in April and May to around 0.35 and 0.24" (6mm) respectively. The level of humidity also sees a steady increase from March to May, climbing up by three points from 60% to 62%.
Summer weather in Julian
The summer transitions into a phase of relatively high temperatures. June has warm highs of 81.3°F (27.4°C) that rise to reach a scorching 87.3°F (30.7°C) by August, with nighttime lows only decreasing to around 62.8°F (17.1°C) in August. Accompanied by minimal cloud cover of 6-9%, the summer days in Julian are bright and clear, making it properly 'Mediterranean, hot summer'.
Autumn weather in Julian
Autumn in Julian brings lower temperatures and visible change in precipitation. The noticeably cooler temperatures range from a high of 76.8°F (24.9°C) in September to 61.3°F (16.3°C) in November. This period observes a significant increase in precipitation, starting from a modest 0.24" (6mm) in September to a hefty 0.71" (18mm) in November.
Winter weather in Julian
Julian's winter clutches a colder temperature range with highs from 61.3°F (16.3°C) dropping to 63.9°F (17.7°C) in February, and lows from 44.6°F (7°C) rising to a paltry 45°F (7.2°C). The notable aspect of Julian's winter is the tangible snowfall, which can range from 0.6" (15mm) in November to a reach a considerable peak of 6.7" (170mm) in February.
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). Weather in January »
Weather in February
In February, the city of Julian, California, encounters slightly elevated temperatures while the humidity increases compared to January. Snowfall tends to increase, peaking at 5" (127mm). February's atmospheric pressure is marginally less than January's, signifying slightly unstable weather conditions. Weather in February »
Weather in March
March ushers in a critical transition phase in Julian's weather calendar, as the winter snowfall tends to gradually decrease. Despite less snow, rainfall still frequents the town, resulting in rich green landscapes. March records higher daytime temperatures than February, improving the overall weather attractiveness. Weather in March »
Weather in April
April announces the arrival of spring in Julian, California, with increased temperatures and extended daylight hours. Despite the slight increases, the weather remains relatively cooler than May, providing a lingering impression of spring's sparkle. Weather in April »
Weather in May
May brings forth an aura of warmth in Julian with a noticeable uptick in temperature. This rise sets it apart from April, rolling out longer and sunnier days. The rainfall decreases significantly in comparison to April and snowfall dips to an insignificant 0.6" (15mm), ushering in a period of dry spell. Weather in May »
Weather in June
June in Julian, California, marks the arrival of summer with significant increases in temperature. There is also a marked disparity in temperature highs between June and the subsequent month. Snowfall ceases entirely and the city basks in the glory of the longest daylight hours of the year, coupled with maximum sunshine hours. Weather in June »
Weather in July
The mercury soars in July, marking the height of summer in Julian. This month records the highest temperature parameter of 85.8°F (29.9°C), distinguishing it from the slightly cooler June. The city witnesses an increase in rainfall, breaking the summer dry spell. Weather in July »
Weather in August
August continues the summer trend in Julian, California, only to record slightly elevated temperatures compared to July. The city experiences the highest temperature recorded throughout the year, which adds a unique attribute. Despite the minimal precipitation, it records a decrease in relative humidity. Weather in August »
Weather in September
Continuing the warm weather trend, September sees a slight drop in temperature in comparison to August. This period also marks the cessation of rainfall altogether, indicating a return of the dry conditions. A marginal decrease in daylight hours signifies the onset of autumn. Weather in September »
Weather in October
In October, a visible drop in average temperatures indicates the arrival of autumn in Julian, California. The weather takes a colder turn compared to September, suggesting a full-fledged arrival of the fall season. Despite the decrease in rainfall, the city beholds clear blue skies and ample sunshine unveiling a vibrant canvas of autumn colors. Weather in October »
Weather in November
In November, Julian continues to cool, showing a considerable change in weather conditions from the warmth of October. This month witnesses a slight increase in rainfall coupled with reduced sunshine hours, yet outdoor activities remain popular. Weather in November »
Weather in December
December rings in the winter season in Julian, California. This month sees a noticeable drop in temperature from November, punctuated by occasional rain showers and light snowfall of about 2.5" (64mm). The daylight hours decrease significantly, giving the city a cozy and charming winter feel. Weather in December »
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How many days does it rain?
In Julian, during the entire year, the rain falls for 62 days and collects up to 6.38" (162mm) of precipitation.
When does it snow?
Months with snowfall are January through May, November and December.
How much does it snow?
Throughout the year, 22.01" (559mm) of snow is accumulated.
What is the wettest month?
The month with the most rainfall in Julian is February, when the rain falls for 6.4 days and typically aggregates up to 0.94" (24mm) of precipitation.
What is the snowiest month?
March is the month with the most snowfall, with 6.69" (170mm) of accumulated snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the most humid month?
The most humid month is May, with an average relative humidity of 62%.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 1.5 days and typically collects 0.08" (2mm) of precipitation.
When it does not snow?
June through October are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 14h and 18min of daylight.
What is the month with the most sunshine?
June and July, with an average of 12.1h of sunshine, are months with the most sunshine.
What are the months with the highest UV index?
June through September, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
Julian experiences its average highest temperatures in August, reaching a peak of 87.3°F (30.7°C) and a minimum of 64.9°F (18.3°C).
What is the least humid month?
November is the least humid month, with an average relative humidity of 51%.
What is the month with the lowest UV index?
November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What month is the coldest?
December, characterized by an average high temperature of 61.3°F (16.3°C) and a low temperature of 44.6°F (7°C), is generally the coldest month.
What is the month with the shortest days in Julian?
December has the shortest days of the year, with an average of 10h and 0min of daylight.
What is the month with the least sunshine in Julian?
December has the least sunshine of the year, with an average of 6.7h of sunshine.
Average temperature
Julian, CA
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).
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
Julian, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.87"Hg - Average pressure in September:
29.86"Hg - Average pressure in October:
29.92"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.06"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
Julian, CA
- Average wind speed in January:
5.1mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.6mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.1mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.5mph - Average wind speed in November:
5.1mph - Average wind speed in December:
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
Julian, CA
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).
Average rainfall
Julian, CA
- Average rainfall in January:
0.75" - Average rainfall in February:
0.94" - Average rainfall in March:
0.63" - Average rainfall in April:
0.35" - Average rainfall in May:
0.24" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.71" - Average rainfall in August:
0.63" - Average rainfall in September:
0.51" - Average rainfall in October:
0.24" - Average rainfall in November:
0.59" - Average rainfall in December:
0.71"
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
Julian, CA
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
7.6 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
4.2 days - Average rainfall days in June:
1.5 days
- Average rainfall days in July:
7.1 days - Average rainfall days in August:
6 days - Average rainfall days in September:
5.5 days - Average rainfall days in October:
3.4 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
5.5 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
Julian, CA
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 / Average sunshine
Julian, CA
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
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 - Average sunshine in February:
6h and 5min - Average sunshine in March:
8h and 4min - Average sunshine in April:
11h and 1min - Average sunshine in May:
11h and 3min - Average sunshine in June:
12h and 1min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 2min - Average sunshine in October:
9h and 1min - Average sunshine in November:
7h and 2min - Average sunshine in December:
6h and 4min
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
Julian, CA
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
21.1 days - Average sunshine days in March:
22.2 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
25.2 days - Average sunshine days in June:
27.5 days
- Average sunshine days in July:
19.4 days - Average sunshine days in August:
21.5 days - Average sunshine days in September:
21.8 days - Average sunshine days in October:
26 days - Average sunshine days in November:
25.1 days - Average sunshine days in December:
24 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
Julian, CA
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
Julian, CA
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
Julian, CA
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).
Julian, California, USA
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