As of 07:10 PDT

Waterloo, OR weather in December

45°

Waterloo, Wednesday, 7 October, 07:10

Partly cloudy. Feels like 45°. High 79°, low 45°.

Pressure30.03 inHg

Wind0.6 mph S

Humidity97%

Visibility1.0 mi

Dew point44°

See detailed hourly forecast

In December, Waterloo, OR averages a high of 46.4° and a low of 34.9°. About 10.5 inches of precipitation fall over the month (19 wet days). The record high is 65.3° (1980) and the record low -11° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	47.5°	36.9°	63%	60.4° (2021)	25.7° (1985)
2	47.8°	37.4°	70%	56.7° (2003)	26.2° (1985)
3	48.2°	36.5°	57%	60.6° (1979)	26.4° (1992)
4	47.3°	36°	52%	62.2° (2023)	21.4° (1994)
5	47.1°	35.2°	55%	62.4° (2023)	18.1° (1994)
6	47.1°	36.5°	65%	56.1° (2010)	19.6° (1972)
7	46°	35.1°	58%	58.8° (1962)	9.5° (1980)
8	46.6°	34.3°	62%	61.3° (2014)	-7.1° (1972)
9	46.9°	35.1°	67%	59.2° (2014)	-2° (1972)
10	47.1°	36°	63%	61° (2014)	-0.2° (1972)
11	46.8°	35.4°	68%	60.3° (2025)	3.4° (1972)
12	46.6°	36.3°	72%	60.1° (1988)	22.3° (1985)
13	46.4°	34.9°	60%	60.8° (1969)	19.6° (1972)
14	46.4°	35.4°	63%	62.4° (1962)	12° (1972)
15	46.6°	34.3°	60%	61° (2025)	19° (2008)
16	47.5°	35.2°	53%	60.1° (2025)	10.9° (2008)
17	47.1°	34.5°	52%	63.1° (1979)	6.6° (1964)
18	46.2°	34.3°	50%	60.1° (2004)	18.3° (1984)
19	46.4°	34.2°	60%	59.4° (2023)	10.4° (1984)
20	45.5°	34.7°	70%	59.9° (2019)	-3.5° (1990)
21	46°	34.7°	67%	58.3° (2020)	-11° (1990)
22	45.1°	34.2°	68%	57.6° (1964)	-6.7° (1990)
23	45.7°	34.2°	63%	57.6° (2005)	1.2° (1990)
24	45.7°	33.1°	58%	60.4° (2005)	3.4° (1990)
25	46.4°	33.3°	53%	61.2° (2022)	10.4° (1987)
26	46.2°	34.7°	62%	65.3° (1980)	15.6° (1988)
27	46°	35.2°	65%	59.4° (1980)	21.2° (1987)
28	45.1°	34.5°	55%	56.3° (1980)	19.4° (1971)
29	45°	33.6°	63%	63.5° (2023)	-2.2° (1990)
30	45.5°	32.9°	55%	62.1° (1980)	4.8° (1990)
31	44.4°	32.5°	55%	59.4° (1996)	9° (2010)