Montclair and Potomac Mills have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Montclair | Metric | Potomac Mills |
|---|---|---|
| 208 days | Sunny daysclear or partly cloudy skies | 207 days |
| 41 in | Precipitationper year | 42 in |
| 116 days | Wet daysrain or snow per year | 118 days |
| 13 in | Snowfallper year | 14 in |
| 33 days | Hot daysabove 90 °F | 31 days |
| 81 days | Freezing nightsat or below 32 °F | 87 days |
| 71% | Humidityaverage relative | 70% |
| 57 °F | Average temperatureyear round | 56 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Montclair high | 44 | 47 | 56 | 67 | 75 | 83 | 88 | 86 | 79 | 68 | 57 | 48 |
| Potomac Mills high | 44 | 47 | 55 | 67 | 74 | 83 | 87 | 85 | 78 | 67 | 57 | 47 |
| Montclair low | 27 | 29 | 36 | 46 | 56 | 65 | 70 | 68 | 61 | 48 | 38 | 31 |
| Potomac Mills low | 26 | 28 | 34 | 45 | 55 | 64 | 69 | 67 | 60 | 47 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Montclair | 3.1 | 2.8 | 3.9 | 3.3 | 3.5 | 3.5 | 3.7 | 3.5 | 4.2 | 3.5 | 2.9 | 3.4 |
| Potomac Mills | 3.1 | 2.8 | 3.9 | 3.4 | 3.7 | 3.5 | 3.8 | 3.5 | 4.3 | 3.4 | 2.9 | 3.4 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Montclair | 17 | 16 | 17 | 16 | 16 | 17 | 19 | 19 | 18 | 20 | 18 | 17 |
| Potomac Mills | 17 | 15 | 16 | 16 | 16 | 17 | 19 | 19 | 18 | 19 | 18 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Montclair vs another city
- Montclair vs Dale City, VA
- Montclair vs Leesylvania, VA
- Montclair vs Dumfries, VA
- Montclair vs Cherry Hill, VA
- Montclair vs Triangle, VA
- Montclair vs New York, NY
- Montclair vs Los Angeles, CA
- Montclair vs Chicago, IL
- Montclair vs Houston, TX
- Montclair vs Phoenix, AZ
- Montclair vs Philadelphia, PA
Potomac Mills vs another city
- Potomac Mills vs Lake Ridge, VA
- Potomac Mills vs Dale City, VA
- Potomac Mills vs Woodbridge, VA
- Potomac Mills vs Leesylvania, VA
- Potomac Mills vs Laurel Hill, VA
- Potomac Mills vs New York, NY
- Potomac Mills vs Los Angeles, CA
- Potomac Mills vs Chicago, IL
- Potomac Mills vs Houston, TX
- Potomac Mills vs Phoenix, AZ
- Potomac Mills 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).