The year at a glance
Averages from 30 years of climate history, 1991-2020
| Seattle | Metric | Tucson |
|---|---|---|
| 147 days | Sunny daysclear or partly cloudy skies | 302 days |
| 37 in | Precipitationper year | 11 in |
| 157 days | Wet daysrain or snow per year | 47 days |
| 6 in | Snowfallper year | 5 in |
| 3 days | Hot daysabove 90 °F | 155 days |
| 28 days | Freezing nightsat or below 32 °F | 9 days |
| 78% | Humidityaverage relative | 37% |
| 54 °F | Average temperatureyear round | 71 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seattle high | 48 | 50 | 55 | 59 | 66 | 71 | 77 | 77 | 72 | 61 | 53 | 47 |
| Tucson high | 66 | 69 | 75 | 83 | 91 | 101 | 100 | 98 | 95 | 86 | 75 | 65 |
| Seattle low | 37 | 37 | 39 | 43 | 49 | 53 | 57 | 58 | 54 | 47 | 40 | 37 |
| Tucson low | 41 | 44 | 49 | 54 | 63 | 72 | 76 | 75 | 70 | 59 | 48 | 41 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Tucson | 1.3 | 1.3 | 0.8 | 0.3 | 0.1 | 0.2 | 1.5 | 1.5 | 1.0 | 0.6 | 0.7 | 1.3 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seattle | 7 | 10 | 9 | 10 | 12 | 13 | 20 | 21 | 18 | 12 | 8 | 7 |
| Tucson | 23 | 21 | 25 | 27 | 28 | 28 | 22 | 24 | 27 | 28 | 25 | 24 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
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
Tucson vs another city
- Tucson vs Catalina Foothills, AZ
- Tucson vs Drexel Heights, AZ
- Tucson vs Tanque Verde, AZ
- Tucson vs Rincon Valley, AZ
- Tucson vs Flowing Wells, AZ
- Tucson vs Vail, AZ
- Tucson vs New York, NY
- Tucson vs Los Angeles, CA
- Tucson vs Chicago, IL
- Tucson vs Houston, TX
- Tucson vs Phoenix, AZ
- Tucson 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).