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Lake Oswego and Tualatin have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Lake Oswego | Metric | Tualatin |
|---|---|---|
| 160 days | Sunny daysclear or partly cloudy skies | 160 days |
| 48 in | Precipitationper year | 48 in |
| 143 days | Wet daysrain or snow per year | 143 days |
| 6 in | Snowfallper year | 6 in |
| 16 days | Hot daysabove 90 °F | 17 days |
| 30 days | Freezing nightsat or below 32 °F | 40 days |
| 75% | Humidityaverage relative | 75% |
| 55 °F | Average temperatureyear round | 54 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Oswego high | 48 | 52 | 57 | 63 | 70 | 75 | 82 | 83 | 77 | 64 | 53 | 47 |
| Tualatin high | 48 | 52 | 57 | 63 | 69 | 75 | 82 | 83 | 77 | 64 | 53 | 47 |
| Lake Oswego low | 36 | 37 | 39 | 42 | 48 | 52 | 56 | 56 | 52 | 46 | 40 | 36 |
| Tualatin low | 36 | 36 | 38 | 41 | 47 | 51 | 55 | 55 | 51 | 44 | 39 | 35 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Oswego | 6.6 | 5.1 | 5.7 | 4.5 | 2.8 | 1.7 | 0.5 | 0.6 | 1.6 | 4.2 | 6.9 | 7.6 |
| Tualatin | 6.6 | 5.1 | 5.7 | 4.5 | 2.8 | 1.7 | 0.5 | 0.6 | 1.6 | 4.2 | 6.9 | 7.6 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Oswego | 7 | 8 | 8 | 9 | 13 | 15 | 24 | 25 | 21 | 15 | 8 | 7 |
| Tualatin | 7 | 8 | 8 | 9 | 13 | 15 | 24 | 25 | 21 | 15 | 8 | 7 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Lake Oswego vs another city
- Lake Oswego vs Oak Grove, OR
- Lake Oswego vs Tigard, OR
- Lake Oswego vs Jennings Lodge, OR
- Lake Oswego vs West Linn, OR
- Lake Oswego vs Milwaukie, OR
- Lake Oswego vs New York, NY
- Lake Oswego vs Los Angeles, CA
- Lake Oswego vs Chicago, IL
- Lake Oswego vs Houston, TX
- Lake Oswego vs Phoenix, AZ
- Lake Oswego vs Philadelphia, PA
Tualatin vs another city
- Tualatin vs King City, OR
- Tualatin vs Tigard, OR
- Tualatin vs Sherwood, OR
- Tualatin vs Bull Mountain, OR
- Tualatin vs Wilsonville, OR
- Tualatin vs New York, NY
- Tualatin vs Los Angeles, CA
- Tualatin vs Chicago, IL
- Tualatin vs Houston, TX
- Tualatin vs Phoenix, AZ
- Tualatin vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).