The year at a glance
Averages from 30 years of climate history, 1991-2020
| Belmont | Metric | Waltham |
|---|---|---|
| 202 days | Sunny daysclear or partly cloudy skies | 202 days |
| 42 in | Precipitationper year | 42 in |
| 123 days | Wet daysrain or snow per year | 123 days |
| 59 in | Snowfallper year | 58 in |
| 16 days | Hot daysabove 90 °F | 16 days |
| 129 days | Freezing nightsat or below 32 °F | 130 days |
| 71% | Humidityaverage relative | 71% |
| 51 °F | Average temperatureyear round | 51 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belmont high | 37 | 39 | 47 | 59 | 70 | 79 | 85 | 83 | 75 | 63 | 52 | 42 |
| Waltham high | 37 | 39 | 47 | 59 | 70 | 79 | 85 | 83 | 75 | 63 | 52 | 42 |
| Belmont low | 19 | 20 | 28 | 37 | 47 | 57 | 63 | 61 | 53 | 42 | 33 | 24 |
| Waltham low | 18 | 20 | 27 | 37 | 47 | 56 | 62 | 61 | 53 | 41 | 33 | 24 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belmont | 3.3 | 3.0 | 4.2 | 3.7 | 3.1 | 3.4 | 3.1 | 3.4 | 3.3 | 3.8 | 3.4 | 4.2 |
| Waltham | 3.3 | 3.0 | 4.2 | 3.7 | 3.1 | 3.4 | 3.1 | 3.4 | 3.3 | 3.8 | 3.4 | 4.2 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belmont | 18 | 16 | 16 | 16 | 15 | 15 | 19 | 19 | 17 | 19 | 17 | 17 |
| Waltham | 18 | 16 | 16 | 16 | 15 | 15 | 19 | 19 | 17 | 19 | 17 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Belmont vs another city
- Belmont vs Arlington, MA
- Belmont vs Cambridge, MA
- Belmont vs Somerville, MA
- Belmont vs Medford, MA
- Belmont vs Lexington, MA
- Belmont vs New York, NY
- Belmont vs Los Angeles, CA
- Belmont vs Chicago, IL
- Belmont vs Houston, TX
- Belmont vs Phoenix, AZ
- Belmont vs Philadelphia, PA
Waltham vs another city
- Waltham vs Lexington, MA
- Waltham vs Newton, MA
- Waltham vs Arlington, MA
- Waltham vs Wellesley, MA
- Waltham vs Cambridge, MA
- Waltham vs New York, NY
- Waltham vs Los Angeles, CA
- Waltham vs Chicago, IL
- Waltham vs Houston, TX
- Waltham vs Phoenix, AZ
- Waltham 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).