Ramona weather in December: Ramona, California: normal highs, lows, rain and records for December
Ramona in December has a normal high of 66°F and a normal low of 36°F, a daily mean of 51°F, falling from 67°F on the 1st to 66°F by the 31st. Measurable precipitation falls on 7 days in a normal December, 2.08 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 2°C, 53 mm of precipitation in December.
- NOAA stationRamona Airport
- Station IDUSW00053120
- Location33.04°N 116.92°W
- Elevation1,393 ft (425 m)
- Population (census place)22,829
- Jan 66° 37°
- Feb 66° 38°
- Mar 68° 40°
- Apr 72° 43°
- May 76° 49°
- Jun 83° 52°
- Jul 89° 58°
- Aug 91° 59°
- Sep 87° 55°
- Oct 80° 49°
- Nov 73° 40°
- Dec 66° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Ramona in December?
The normal high is 66°F and the normal low 36°F, for a daily mean of 50.6°F. December is 5.8°F cooler than November and 0.8°F cooler than January. December is the 12th warmest month of the year in Ramona and the 4th wettest. Across the month the normal high falls 1°F, from 67°F on December 1 to 66°F on December 31. From one year to the next December's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 49°F and 52°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 22%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 67°F | 37°F | 19% | 11% |
| December 8 | 66°F | 36°F | 21% | 12% |
| December 15 | 65°F | 35°F | 22% | 13% |
| December 22 | 65°F | 35°F | 22% | 13% |
| December 31 | 66°F | 36°F | 22% | 13% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 13)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 67°F | 37°F | 19% | 11% | 10 h 10 min |
| December 2 | 67°F | 36°F | 19% | 11% | 10 h 10 min |
| December 3 | 67°F | 36°F | 20% | 11% | 10 h 10 min |
| December 4 | 67°F | 36°F | 20% | 11% | 10 h 10 min |
| December 5 | 66°F | 36°F | 20% | 11% | 10 h 10 min |
| December 6 | 66°F | 36°F | 20% | 12% | 10 h |
| December 7 | 66°F | 36°F | 20% | 12% | 10 h |
| December 8 | 66°F | 36°F | 21% | 12% | 10 h |
| December 9 | 66°F | 36°F | 21% | 12% | 10 h |
| December 10 | 66°F | 36°F | 21% | 12% | 10 h |
| December 11 | 65°F | 35°F | 21% | 12% | 10 h |
| December 12 | 65°F | 35°F | 21% | 13% | 10 h |
| December 13 | 65°F | 35°F | 22% | 13% | 10 h |
| December 14 | 65°F | 35°F | 22% | 13% | 10 h |
| December 15 | 65°F | 35°F | 22% | 13% | 10 h |
| December 16 | 65°F | 35°F | 22% | 13% | 10 h |
| December 17 | 65°F | 35°F | 22% | 13% | 10 h |
| December 18 | 65°F | 35°F | 22% | 13% | 10 h |
| December 19 | 65°F | 35°F | 22% | 13% | 10 h |
| December 20 | 65°F | 35°F | 22% | 13% | 10 h |
| December 21 | 65°F | 35°F | 22% | 13% | 10 h |
| December 22 | 65°F | 35°F | 22% | 13% | 10 h |
| December 23 | 65°F | 35°F | 22% | 13% | 10 h |
| December 24 | 65°F | 36°F | 22% | 13% | 10 h |
| December 25 | 65°F | 36°F | 22% | 13% | 10 h |
| December 26 | 65°F | 36°F | 22% | 13% | 10 h |
| December 27 | 65°F | 36°F | 22% | 13% | 10 h |
| December 28 | 65°F | 36°F | 22% | 13% | 10 h |
| December 29 | 66°F | 36°F | 22% | 13% | 10 h |
| December 30 | 66°F | 36°F | 22% | 13% | 10 h |
| December 31 | 66°F | 36°F | 22% | 13% | 10 h |
- Normal high
- 66°FDecember average
- Normal low
- 36°FDecember average
- Precipitation
- 2.08 inmonth total
- Days with precipitation
- 70.01 inch or more
- Nights at 32°F or colder
- 14
- Daylight
- 10 h 10 min to 10 hDecember 1 to December 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 2
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053120; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Ramona in December?
On a given December day the chance of 0.01 inch or more is 21% on average, highest around December 20 (22%). In all, 2.08 in falls on 7 days of a normal December, 1 of them with an inch or more.
In a normal December in Ramona, 14 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053120.
What are the records for December in Ramona?
The warmest December temperature on Ramona's official record (since 1974) is 94°F, on December 4, 1979; the coldest is 20°F, on December 5, 2011. The wettest December brought 9.20 in (2010).
The December mean against the 1991-2020 normal of 50.6°F: 2021 49.8°F (−0.8), 2022 50.4°F (−0.2), 2023 53.6°F (+3.0), 2024 53.4°F (+2.8), 2025 55.9°F (+5.3). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 49.8°F | −0.8°F | 4.62 in |
| 2022 | 50.4°F | −0.2°F | 1.98 in |
| 2023 | 53.6°F | +3.0°F | 0.71 in |
| 2024 | 53.4°F | +2.8°F | 0.01 in |
| 2025 | 55.9°F | +5.3°F | 1.34 in |
Source: records: ACIS, NWS threaded record RNMthr; recent months: ACIS, station USW00053120. Records and recent months use complete months only.
How does December in Ramona 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; Ramona's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.