The year at a glance
Averages from 30 years of climate history, 1991-2020
| Boston | Metric | San Jose |
|---|---|---|
| 201 days | Sunny daysclear or partly cloudy skies | 263 days |
| 44 in | Precipitationper year | 17 in |
| 124 days | Wet daysrain or snow per year | 60 days |
| 50 in | Snowfallper year | 0 in |
| 15 days | Hot daysabove 90 °F | 21 days |
| 94 days | Freezing nightsat or below 32 °F | 5 days |
| 72% | Humidityaverage relative | 67% |
| 52 °F | Average temperatureyear round | 61 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boston high | 37 | 39 | 46 | 57 | 67 | 76 | 82 | 81 | 73 | 62 | 52 | 42 |
| San Jose high | 59 | 62 | 66 | 70 | 75 | 80 | 82 | 83 | 82 | 75 | 65 | 59 |
| Boston low | 23 | 24 | 31 | 41 | 50 | 60 | 66 | 65 | 58 | 47 | 38 | 29 |
| San Jose low | 42 | 44 | 46 | 48 | 52 | 55 | 58 | 58 | 57 | 52 | 46 | 42 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boston | 3.7 | 3.3 | 4.6 | 3.9 | 3.2 | 3.4 | 2.9 | 3.4 | 3.4 | 4.3 | 3.7 | 4.6 |
| San Jose | 3.4 | 3.4 | 2.6 | 1.2 | 0.6 | 0.1 | 0.0 | 0.0 | 0.1 | 0.8 | 1.5 | 3.0 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boston | 17 | 16 | 16 | 16 | 15 | 15 | 19 | 19 | 17 | 19 | 17 | 16 |
| San Jose | 15 | 14 | 16 | 19 | 24 | 27 | 30 | 30 | 29 | 26 | 19 | 16 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Boston vs another city
- Boston vs Winthrop Town, MA
- Boston vs Chelsea, MA
- Boston vs Everett, MA
- Boston vs Quincy, MA
- Boston vs Somerville, MA
- Boston vs Cambridge, MA
- Boston vs New York, NY
- Boston vs Los Angeles, CA
- Boston vs Chicago, IL
- Boston vs Houston, TX
- Boston vs Phoenix, AZ
- Boston vs Philadelphia, PA
San Jose vs another city
- San Jose vs Alum Rock, CA
- San Jose vs East Foothills, CA
- San Jose vs Burbank, CA
- San Jose vs Campbell, CA
- San Jose vs Los Gatos, CA
- San Jose vs Santa Clara, CA
- San Jose vs New York, NY
- San Jose vs Los Angeles, CA
- San Jose vs Chicago, IL
- San Jose vs Houston, TX
- San Jose vs Phoenix, AZ
- San Jose 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).