Klamath Falls weather in December: Klamath Falls, Oregon: normal highs, lows, rain and records for December
Klamath Falls in December has a normal high of 40°F and a normal low of 21°F, a daily mean of 30°F, falling from 43°F on the 1st to 40°F by the 31st. Measurable precipitation falls on 12 days in a normal December, 1.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 5°C and low of −6°C, 46 mm of precipitation in December.
- NOAA stationKlamath Falls International Airport
- Station IDUSW00094236
- Location42.15°N 121.72°W
- Elevation4,084 ft (1,245 m)
- Population22,174
- Jan 42° 22°
- Feb 46° 24°
- Mar 52° 27°
- Apr 58° 29°
- May 67° 36°
- Jun 76° 41°
- Jul 86° 48°
- Aug 85° 47°
- Sep 78° 39°
- Oct 64° 31°
- Nov 49° 25°
- Dec 40° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Klamath Falls in December?
The normal high is 40°F and the normal low 21°F, for a daily mean of 30.4°F. December is 6.6°F cooler than November and 1.1°F cooler than January. December is the 12th warmest month of the year in Klamath Falls and the wettest. Across the month the normal high falls 3°F, from 43°F on December 1 to 40°F on December 31. From one year to the next December's mean temperature typically moves about 3.5°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 27°F and 34°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 43°F | 22°F | 38% | 16% |
| December 8 | 41°F | 21°F | 39% | 16% |
| December 15 | 40°F | 20°F | 39% | 16% |
| December 22 | 40°F | 20°F | 39% | 15% |
| December 31 | 40°F | 20°F | 38% | 14% |
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 | 43°F | 22°F | 38% | 16% | 9 h 20 min |
| December 2 | 42°F | 22°F | 39% | 16% | 9 h 20 min |
| December 3 | 42°F | 22°F | 39% | 16% | 9 h 20 min |
| December 4 | 42°F | 22°F | 39% | 16% | 9 h 20 min |
| December 5 | 42°F | 21°F | 39% | 16% | 9 h 20 min |
| December 6 | 41°F | 21°F | 39% | 16% | 9 h 20 min |
| December 7 | 41°F | 21°F | 39% | 16% | 9 h 10 min |
| December 8 | 41°F | 21°F | 39% | 16% | 9 h 10 min |
| December 9 | 41°F | 21°F | 39% | 16% | 9 h 10 min |
| December 10 | 40°F | 21°F | 39% | 16% | 9 h 10 min |
| December 11 | 40°F | 21°F | 39% | 16% | 9 h 10 min |
| December 12 | 40°F | 21°F | 39% | 16% | 9 h 10 min |
| December 13 | 40°F | 20°F | 39% | 16% | 9 h 10 min |
| December 14 | 40°F | 20°F | 39% | 16% | 9 h 10 min |
| December 15 | 40°F | 20°F | 39% | 16% | 9 h 10 min |
| December 16 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 17 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 18 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 19 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 20 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 21 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 22 | 40°F | 20°F | 39% | 15% | 9 h 10 min |
| December 23 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 24 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 25 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 26 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 27 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 28 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 29 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 30 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
| December 31 | 40°F | 20°F | 38% | 14% | 9 h 10 min |
- Normal high
- 40°FDecember average
- Normal low
- 21°FDecember average
- Precipitation
- 1.80 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 28
- Daylight
- 9 h 20 min to 9 h 10 minDecember 1 to December 31
- Sunshine
- 62%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094236; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Klamath Falls in December?
On a given December day the chance of 0.01 inch or more is 39% on average, highest around December 9 (39%). In all, 1.80 in falls on 12 days of a normal December.
In a normal December in Klamath Falls, 28 nights fall to freezing and 5 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094236.
How humid and windy is Klamath Falls in December?
At 3 p.m. the normal temperature is 37°F with 66% relative humidity and a dew point of 27°F; at 6 a.m. it is 25°F with 87% humidity. The wind averages 6.0 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 25°F | 22°F | 87% | 5.2 mph | 40% |
| 9 a.m. | 27°F | 24°F | 86% | 5.3 mph | 26% |
| noon | 34°F | 26°F | 72% | 7.1 mph | 26% |
| 3 p.m. | 37°F | 27°F | 66% | 7.7 mph | 30% |
| 6 p.m. | 31°F | 26°F | 80% | 6.2 mph | 33% |
| 9 p.m. | 29°F | 25°F | 84% | 5.6 mph | 38% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094236. 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 Klamath Falls?
The warmest December temperature on Klamath Falls's official record (since 1897) is 62°F, on December 2, 1929; the coldest is −20°F, on December 8, 2013. The wettest December brought 8.93 in (1964); the snowiest, 37.6 inches (1952).
The December mean against the 1991-2020 normal of 30.4°F: 2021 30.1°F (−0.3), 2022 26.6°F (−3.8), 2023 36.2°F (+5.8), 2024 35.9°F (+5.5), 2025 36.3°F (+5.9). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 30.1°F | −0.3°F | 0.65 in |
| 2022 | 26.6°F | −3.8°F | 2.99 in |
| 2023 | 36.2°F | +5.8°F | 1.89 in |
| 2024 | 35.9°F | +5.5°F | 2.92 in |
| 2025 | 36.3°F | +5.9°F | 3.58 in |
Source: records: ACIS, NWS threaded record LMTthr; recent months: ACIS, station USW00094236. Records and recent months use complete months only.
How does December in Klamath Falls 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; Klamath Falls's is 40°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Klamath Falls in November49°F by day, 25°F at night
- Klamath Falls in January42°F by day, 22°F at night
- Klamath Falls through the yearEvery month, frost dates, records and recent years
- Oregon in DecemberThe statewide normal and the warmest and coolest places
- Bandon: Oregon's warmest Decembernormal high 55°F