The year at a glance
Averages from 30 years of climate history, 1991-2020
| Arlington | Metric | Seattle |
|---|---|---|
| 206 days | Sunny daysclear or partly cloudy skies | 147 days |
| 42 in | Precipitationper year | 37 in |
| 119 days | Wet daysrain or snow per year | 157 days |
| 14 in | Snowfallper year | 6 in |
| 43 days | Hot daysabove 90 °F | 3 days |
| 79 days | Freezing nightsat or below 32 °F | 28 days |
| 69% | Humidityaverage relative | 78% |
| 58 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington high | 44 | 47 | 56 | 68 | 76 | 85 | 89 | 87 | 80 | 69 | 57 | 48 |
| Seattle high | 48 | 50 | 55 | 59 | 66 | 71 | 77 | 77 | 72 | 61 | 53 | 47 |
| Arlington low | 28 | 29 | 36 | 46 | 56 | 65 | 70 | 69 | 62 | 49 | 39 | 32 |
| Seattle low | 37 | 37 | 39 | 43 | 49 | 53 | 57 | 58 | 54 | 47 | 40 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington | 3.1 | 2.9 | 3.9 | 3.4 | 3.8 | 3.5 | 4.1 | 3.5 | 4.3 | 3.4 | 2.9 | 3.5 |
| Seattle | 4.9 | 3.4 | 3.9 | 3.2 | 2.1 | 1.7 | 0.7 | 0.9 | 1.9 | 3.7 | 5.4 | 5.0 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington | 16 | 15 | 16 | 16 | 16 | 17 | 19 | 19 | 18 | 19 | 18 | 17 |
| Seattle | 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.
Arlington vs another city
- Arlington vs Seven Corners, VA
- Arlington vs Bailey's Crossroads, VA
- Arlington vs Lake Barcroft, VA
- Arlington vs Falls Church, VA
- Arlington vs Alexandria, VA
- Arlington vs West Falls Church, VA
- Arlington vs New York, NY
- Arlington vs Los Angeles, CA
- Arlington vs Chicago, IL
- Arlington vs Houston, TX
- Arlington vs Phoenix, AZ
- Arlington vs Philadelphia, PA
Seattle vs another city
- Seattle vs Mercer Island, WA
- Seattle vs Bainbridge Island, WA
- Seattle vs White Center, WA
- Seattle vs Kirkland, WA
- Seattle vs Bellevue, WA
- Seattle vs Shoreline, WA
- Seattle vs New York, NY
- Seattle vs Los Angeles, CA
- Seattle vs Chicago, IL
- Seattle vs Houston, TX
- Seattle vs Phoenix, AZ
- Seattle 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).