Eugene weather in December: Eugene, Oregon: normal highs, lows, rain and records for December
Eugene in December has a normal high of 47°F and a normal low of 34°F, a daily mean of 41°F, falling from 49°F on the 1st to 47°F by the 31st. Measurable precipitation falls on 19 days in a normal December, 7.21 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 8°C and low of 1°C, 183 mm of precipitation in December.
- NOAA stationEugene-Mahlon Sweet Field
- Station IDUSW00024221
- Location44.13°N 123.22°W
- Elevation353 ft (108 m)
- Population178,786
- Jan 48° 35°
- Feb 52° 35°
- Mar 57° 37°
- Apr 61° 40°
- May 68° 44°
- Jun 74° 48°
- Jul 84° 52°
- Aug 84° 52°
- Sep 78° 48°
- Oct 65° 42°
- Nov 53° 38°
- Dec 47° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Eugene in December?
The normal high is 47°F and the normal low 34°F, for a daily mean of 40.6°F. December is 4.9°F cooler than November and 0.8°F cooler than January. December is the 12th warmest month of the year in Eugene and the wettest. Across the month the normal high falls 2°F, from 49°F on December 1 to 47°F on December 31. From one year to the next December's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 38°F and 43°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 61%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 49°F | 36°F | 60% | 43% |
| December 8 | 47°F | 35°F | 61% | 43% |
| December 15 | 46°F | 34°F | 61% | 42% |
| December 22 | 46°F | 34°F | 61% | 41% |
| December 31 | 47°F | 34°F | 60% | 41% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 18)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 49°F | 36°F | 60% | 43% | 9 h 10 min |
| December 2 | 49°F | 35°F | 60% | 43% | 9 h 10 min |
| December 3 | 48°F | 35°F | 60% | 43% | 9 h 10 min |
| December 4 | 48°F | 35°F | 60% | 43% | 9 h |
| December 5 | 48°F | 35°F | 60% | 43% | 9 h |
| December 6 | 48°F | 35°F | 61% | 43% | 9 h |
| December 7 | 48°F | 35°F | 61% | 43% | 9 h |
| December 8 | 47°F | 35°F | 61% | 43% | 9 h |
| December 9 | 47°F | 35°F | 61% | 43% | 9 h |
| December 10 | 47°F | 34°F | 61% | 43% | 9 h |
| December 11 | 47°F | 34°F | 61% | 43% | 9 h |
| December 12 | 47°F | 34°F | 61% | 43% | 9 h |
| December 13 | 47°F | 34°F | 61% | 43% | 9 h |
| December 14 | 47°F | 34°F | 61% | 43% | 8 h 50 min |
| December 15 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 16 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 17 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 18 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 19 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 20 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 21 | 46°F | 34°F | 61% | 42% | 8 h 50 min |
| December 22 | 46°F | 34°F | 61% | 41% | 8 h 50 min |
| December 23 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 24 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 25 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 26 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 27 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 28 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 29 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 30 | 46°F | 34°F | 60% | 41% | 8 h 50 min |
| December 31 | 47°F | 34°F | 60% | 41% | 9 h |
- Normal high
- 47°FDecember average
- Normal low
- 34°FDecember average
- Precipitation
- 7.21 inmonth total
- Days with precipitation
- 190.01 inch or more
- Nights at 32°F or colder
- 12
- Daylight
- 9 h 10 min to 9 hDecember 1 to December 31
- Sunshine
- 54%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024221; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Eugene in December?
On a given December day the chance of 0.01 inch or more is 61% on average, highest around December 10 (61%). In all, 7.21 in falls on 19 days of a normal December, 2 of them with an inch or more.
In a normal December in Eugene, 12 nights fall to freezing and 1 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024221.
How humid and windy is Eugene in December?
At 3 p.m. the normal temperature is 44°F with 80% relative humidity and a dew point of 39°F; at 6 a.m. it is 38°F with 91% humidity. The wind averages 6.9 mph, most often from the south-southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 38°F | 35°F | 91% | 6.5 mph | – |
| 9 a.m. | 38°F | 36°F | 91% | 6.5 mph | – |
| noon | 43°F | 38°F | 83% | 7.8 mph | – |
| 3 p.m. | 44°F | 39°F | 80% | 8.0 mph | – |
| 6 p.m. | 41°F | 38°F | 88% | 6.5 mph | – |
| 9 p.m. | 40°F | 37°F | 90% | 6.6 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024221. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in Eugene?
The warmest December temperature on Eugene's official record (since 1893) is 68°F, on December 17, 1979; the coldest is −12°F, on December 8, 1972. The wettest December brought 20.99 in (1964); the snowiest, 10.2 inches (1964).
The December mean against the 1991-2020 normal of 40.6°F: 2021 41.6°F (+1.0), 2022 40.4°F (−0.2), 2023 45.9°F (+5.3), 2024 43.1°F (+2.5), 2025 45.5°F (+4.9). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 41.6°F | +1.0°F | 11.13 in |
| 2022 | 40.4°F | −0.2°F | 5.03 in |
| 2023 | 45.9°F | +5.3°F | 6.43 in |
| 2024 | 43.1°F | +2.5°F | 8.09 in |
| 2025 | 45.5°F | +4.9°F | 5.51 in |
Source: records: ACIS, NWS threaded record EUGthr; recent months: ACIS, station USW00024221. Records and recent months use complete months only.
How does December in Eugene compare across Oregon?
Across the 105 places PlainClimate covers in Oregon, December normal highs run from 33°F in Halfway to 55°F in Bandon; Eugene's is 47°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.