WA
Bryn Mawr-Skyway and SeaTac have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Bryn Mawr-Skyway | Metric | SeaTac |
|---|---|---|
| 147 days | Sunny daysclear or partly cloudy skies | 147 days |
| 52 in | Precipitationper year | 52 in |
| 155 days | Wet daysrain or snow per year | 155 days |
| 6 in | Snowfallper year | 6 in |
| 3 days | Hot daysabove 90 °F | 3 days |
| 29 days | Freezing nightsat or below 32 °F | 26 days |
| 79% | Humidityaverage relative | 79% |
| 54 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bryn Mawr-Skyway high | 48 | 50 | 55 | 60 | 66 | 71 | 77 | 78 | 72 | 61 | 52 | 47 |
| SeaTac high | 48 | 50 | 54 | 59 | 66 | 71 | 77 | 78 | 72 | 61 | 52 | 47 |
| Bryn Mawr-Skyway low | 37 | 37 | 40 | 43 | 49 | 54 | 57 | 57 | 53 | 46 | 40 | 37 |
| SeaTac low | 38 | 38 | 40 | 43 | 49 | 53 | 57 | 57 | 54 | 47 | 41 | 37 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bryn Mawr-Skyway | 6.9 | 4.8 | 5.5 | 4.5 | 3.0 | 2.3 | 1.0 | 1.3 | 2.6 | 5.3 | 7.6 | 7.0 |
| SeaTac | 6.9 | 4.8 | 5.5 | 4.5 | 3.0 | 2.3 | 1.0 | 1.3 | 2.6 | 5.3 | 7.6 | 7.0 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bryn Mawr-Skyway | 7 | 10 | 9 | 10 | 12 | 13 | 20 | 21 | 18 | 12 | 8 | 7 |
| SeaTac | 7 | 10 | 9 | 10 | 12 | 13 | 20 | 21 | 18 | 12 | 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.
Bryn Mawr-Skyway vs another city
- Bryn Mawr-Skyway vs Tukwila, WA
- Bryn Mawr-Skyway vs Renton, WA
- Bryn Mawr-Skyway vs Newcastle, WA
- Bryn Mawr-Skyway vs Mercer Island, WA
- Bryn Mawr-Skyway vs Burien, WA
- Bryn Mawr-Skyway vs New York, NY
- Bryn Mawr-Skyway vs Los Angeles, CA
- Bryn Mawr-Skyway vs Chicago, IL
- Bryn Mawr-Skyway vs Houston, TX
- Bryn Mawr-Skyway vs Phoenix, AZ
- Bryn Mawr-Skyway vs Philadelphia, PA
SeaTac vs another city
- SeaTac vs Normandy Park, WA
- SeaTac vs Tukwila, WA
- SeaTac vs Burien, WA
- SeaTac vs Des Moines, WA
- SeaTac vs White Center, WA
- SeaTac vs New York, NY
- SeaTac vs Los Angeles, CA
- SeaTac vs Chicago, IL
- SeaTac vs Houston, TX
- SeaTac vs Phoenix, AZ
- SeaTac 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).