Portland, Oregon
Lat / long:Station notes:
Altitude:
| High degrees F | 62 | 45 | 50 | 56 | 61 | 68 | 73 | 80 | 79 | 74 | 64 | 53 | 46 |
| Low degrees F | 45 | 34 | 36 | 39 | 42 | 48 | 53 | 57 | 57 | 52 | 46 | 40 | 36 |
| Days warmer than 90 degrees F | 11 | 0 | 0 | 0 | Tr | Tr | 1 | 4 | 4 | 1 | Tr | 0 | 0 |
| Days colder than 5 degrees F | Tr | Tr | Tr | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation (avg) inches | 37.5 | 5.5 | 4.2 | 3.8 | 2.4 | 2 | 1.5 | 0.5 | 0.9 | 1.7 | 3 | 5.5 | 6.6 |
| Snow (avg) inches | 7 | 3 | 1 | 1 | Tr | Tr | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| Days with prec. | 197 | 23 | 19 | 21 | 18 | 16 | 13 | 7 | 8 | 11 | 16 | 21 | 24 |
| Days with thunderstorms | 7 | Tr | Tr | 1 | 1 | 1 | 1 | 1 | 1 | 1 | Tr | Tr | Tr |
| Humidity (4 p.m.) % relative | 59 | 75 | 67 | 60 | 55 | 53 | 50 | 45 | 45 | 49 | 61 | 74 | 79 |
| Windspeed (avg) knots | 8 | 10 | 10 | 9 | 7 | 7 | 7 | 8 | 7 | 7 | 8 | 10 | 11 |
