Mountainside and Westfield have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Mountainside | Metric | Westfield |
|---|---|---|
| 200 days | Sunny daysclear or partly cloudy skies | 200 days |
| 45 in | Precipitationper year | 45 in |
| 123 days | Wet daysrain or snow per year | 123 days |
| 26 in | Snowfallper year | 26 in |
| 28 days | Hot daysabove 90 °F | 27 days |
| 100 days | Freezing nightsat or below 32 °F | 99 days |
| 70% | Humidityaverage relative | 70% |
| 55 °F | Average temperatureyear round | 55 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountainside high | 40 | 43 | 51 | 63 | 72 | 81 | 86 | 85 | 78 | 66 | 55 | 45 |
| Westfield high | 40 | 43 | 51 | 63 | 72 | 81 | 86 | 85 | 77 | 66 | 55 | 45 |
| Mountainside low | 24 | 26 | 33 | 42 | 52 | 62 | 67 | 65 | 58 | 46 | 37 | 30 |
| Westfield low | 25 | 26 | 33 | 42 | 52 | 62 | 67 | 66 | 59 | 46 | 37 | 30 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountainside | 3.4 | 3.1 | 4.2 | 3.7 | 3.6 | 4.1 | 4.2 | 4.0 | 4.0 | 3.9 | 3.1 | 4.1 |
| Westfield | 3.4 | 3.1 | 4.2 | 3.7 | 3.6 | 4.1 | 4.2 | 4.0 | 4.0 | 3.9 | 3.1 | 4.1 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountainside | 17 | 16 | 17 | 15 | 15 | 15 | 18 | 18 | 18 | 19 | 17 | 16 |
| Westfield | 17 | 16 | 17 | 15 | 15 | 15 | 18 | 18 | 18 | 19 | 17 | 16 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Mountainside vs another city
- Mountainside vs Summit, NJ
- Mountainside vs New Providence, NJ
- Mountainside vs Fanwood, NJ
- Mountainside vs Kenilworth, NJ
- Mountainside vs Chatham, NJ
- Mountainside vs New York, NY
- Mountainside vs Los Angeles, CA
- Mountainside vs Chicago, IL
- Mountainside vs Houston, TX
- Mountainside vs Phoenix, AZ
- Mountainside vs Philadelphia, PA
Westfield vs another city
- Westfield vs Fanwood, NJ
- Westfield vs Kenilworth, NJ
- Westfield vs Roselle Park, NJ
- Westfield vs Roselle, NJ
- Westfield vs Rahway, NJ
- Westfield vs New York, NY
- Westfield vs Los Angeles, CA
- Westfield vs Chicago, IL
- Westfield vs Houston, TX
- Westfield vs Phoenix, AZ
- Westfield 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).