Julian weather in December: Julian, California: normal highs, lows, rain and records for December
Julian in December has a normal high of 52°F and a normal low of 38°F, a daily mean of 45°F, falling from 55°F on the 1st to 52°F by the 31st. Measurable precipitation falls on 6 days in a normal December, 3.47 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 11°C and low of 3°C, 88 mm of precipitation and 1 cm of snow in December.
- NOAA stationJulian Fire Station
- Station IDUSC00044412
- Location33.08°N 116.59°W
- Elevation4,215 ft (1,285 m)
- Population (census place)1,491
- Jan 53° 39°
- Feb 54° 39°
- Mar 58° 41°
- Apr 62° 43°
- May 69° 47°
- Jun 79° 55°
- Jul 86° 63°
- Aug 86° 62°
- Sep 81° 57°
- Oct 71° 50°
- Nov 60° 43°
- Dec 52° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Julian in December?
The normal high is 52°F and the normal low 38°F, for a daily mean of 45.1°F. December is 6.6°F cooler than November and 0.7°F cooler than January. December is the 12th warmest month of the year in Julian and the 4th wettest. Across the month the normal high falls 3°F, from 55°F on December 1 to 52°F on December 31. From one year to the next December's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 43°F and 47°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 55°F | 40°F | 18% | 13% |
| December 8 | 53°F | 38°F | 19% | 15% |
| December 15 | 52°F | 38°F | 20% | 16% |
| December 22 | 51°F | 38°F | 21% | 17% |
| December 31 | 52°F | 38°F | 20% | 17% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 16)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 55°F | 40°F | 18% | 13% | 10 h 10 min |
| December 2 | 54°F | 39°F | 18% | 13% | 10 h 10 min |
| December 3 | 54°F | 39°F | 19% | 13% | 10 h 10 min |
| December 4 | 54°F | 39°F | 19% | 14% | 10 h 10 min |
| December 5 | 54°F | 39°F | 19% | 14% | 10 h 10 min |
| December 6 | 53°F | 39°F | 19% | 14% | 10 h |
| December 7 | 53°F | 38°F | 19% | 14% | 10 h |
| December 8 | 53°F | 38°F | 19% | 15% | 10 h |
| December 9 | 53°F | 38°F | 19% | 15% | 10 h |
| December 10 | 53°F | 38°F | 20% | 15% | 10 h |
| December 11 | 52°F | 38°F | 20% | 15% | 10 h |
| December 12 | 52°F | 38°F | 20% | 15% | 10 h |
| December 13 | 52°F | 38°F | 20% | 16% | 10 h |
| December 14 | 52°F | 38°F | 20% | 16% | 10 h |
| December 15 | 52°F | 38°F | 20% | 16% | 10 h |
| December 16 | 52°F | 38°F | 20% | 16% | 10 h |
| December 17 | 52°F | 38°F | 21% | 17% | 10 h |
| December 18 | 52°F | 38°F | 21% | 17% | 10 h |
| December 19 | 51°F | 38°F | 21% | 17% | 10 h |
| December 20 | 51°F | 38°F | 21% | 17% | 10 h |
| December 21 | 51°F | 38°F | 21% | 17% | 10 h |
| December 22 | 51°F | 38°F | 21% | 17% | 10 h |
| December 23 | 51°F | 38°F | 21% | 17% | 10 h |
| December 24 | 51°F | 38°F | 21% | 17% | 10 h |
| December 25 | 51°F | 38°F | 21% | 17% | 10 h |
| December 26 | 51°F | 38°F | 20% | 17% | 10 h |
| December 27 | 51°F | 38°F | 20% | 17% | 10 h |
| December 28 | 51°F | 38°F | 20% | 17% | 10 h |
| December 29 | 52°F | 38°F | 20% | 17% | 10 h |
| December 30 | 52°F | 38°F | 20% | 17% | 10 h |
| December 31 | 52°F | 38°F | 20% | 17% | 10 h |
- Normal high
- 52°FDecember average
- Normal low
- 38°FDecember average
- Precipitation
- 3.47 inmonth total
- Days with precipitation
- 60.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 10
- Daylight
- 10 h 10 min to 10 hDecember 1 to December 31
- Days at 70°F or more
- 1
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00044412; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Julian in December?
On a given December day the chance of 0.01 inch or more is 20% on average, highest around December 18 (21%). In all, 3.47 in falls on 6 days of a normal December, 1 of them with an inch or more.
In a normal December in Julian, 10 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00044412.
What are the records for December in Julian?
The December mean against the 1991-2020 normal of 45.1°F: 2021 45.3°F (+0.2), 2022 44.6°F (−0.5), 2023 49.6°F (+4.5), 2024 52.8°F (+7.7), 2025 54.3°F (+9.2). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.3°F | +0.2°F | 10.37 in |
| 2022 | 44.6°F | −0.5°F | 3.69 in |
| 2023 | 49.6°F | +4.5°F | 1.40 in |
| 2024 | 52.8°F | +7.7°F | 0.04 in |
| 2025 | 54.3°F | +9.2°F | 1.64 in |
Source: recent months: ACIS, station USC00044412. Records and recent months use complete months only.
How does December in Julian compare across California?
Across the 219 places PlainClimate covers in California, December normal highs run from 38°F in Tahoma to 71°F in Anaheim; Julian's is 52°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.