Weather in Portland in December
In an average December, Portland sees a daily high around 46°F and a low around 36°F, based on 1980–2026 of local climate records.
| Average high | 46°F |
|---|---|
| Typical high range | 39°F to 53°F |
| Average low | 36°F |
| Typical low range | 27°F to 45°F |
| Average daily precipitation | 0.20 in |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
63°F
1993-12-10
Lowest
17°F
1983-12-24
Low
Highest
57°F
2023-12-05
Lowest
3°F
1990-12-21
Feels-like
Highest
57°F
2023-12-05
Lowest
-11°F
1990-12-21
Humidity
Highest
11.4 g/m³
2015-12-08
Lowest
0.9 g/m³
1983-12-24
Wind
Highest
29 mph
1995-12-12
Lowest
2 mph
2006-12-05
Gust
Highest
70 mph
2006-12-15
Lowest
5 mph
2009-12-12
Precip
Wettest
15.56 in
2015
Driest
2.20 in
1985
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