Lake Hopatcong and Mount Arlington have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Lake Hopatcong | Metric | Mount Arlington |
|---|---|---|
| 194 days | Sunny daysclear or partly cloudy skies | 192 days |
| 47 in | Precipitationper year | 45 in |
| 127 days | Wet daysrain or snow per year | 125 days |
| 30 in | Snowfallper year | 30 in |
| 11 days | Hot daysabove 90 °F | 13 days |
| 130 days | Freezing nightsat or below 32 °F | 129 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Hopatcong high | 36 | 39 | 47 | 60 | 71 | 79 | 84 | 82 | 75 | 63 | 52 | 41 |
| Mount Arlington high | 37 | 40 | 48 | 61 | 71 | 80 | 84 | 82 | 75 | 64 | 52 | 41 |
| Lake Hopatcong low | 18 | 19 | 28 | 38 | 48 | 57 | 62 | 60 | 52 | 41 | 32 | 25 |
| Mount Arlington low | 19 | 20 | 28 | 38 | 48 | 57 | 62 | 60 | 53 | 42 | 32 | 25 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Hopatcong | 3.5 | 3.1 | 4.3 | 3.8 | 3.9 | 4.2 | 4.3 | 4.0 | 4.5 | 4.1 | 3.3 | 4.1 |
| Mount Arlington | 3.5 | 3.0 | 4.1 | 3.7 | 3.7 | 4.0 | 3.7 | 3.6 | 4.1 | 4.0 | 3.2 | 4.0 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Hopatcong | 16 | 15 | 16 | 15 | 15 | 15 | 18 | 17 | 17 | 18 | 16 | 15 |
| Mount Arlington | 15 | 14 | 16 | 15 | 15 | 15 | 18 | 17 | 17 | 18 | 16 | 15 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Lake Hopatcong vs another city
- Lake Hopatcong vs Hopatcong, NJ
- Lake Hopatcong vs Wharton, NJ
- Lake Hopatcong vs Lake Mohawk, NJ
- Lake Hopatcong vs White Meadow Lake, NJ
- Lake Hopatcong vs Dover, NJ
- Lake Hopatcong vs New York, NY
- Lake Hopatcong vs Los Angeles, CA
- Lake Hopatcong vs Chicago, IL
- Lake Hopatcong vs Houston, TX
- Lake Hopatcong vs Phoenix, AZ
- Lake Hopatcong vs Philadelphia, PA
Mount Arlington vs another city
- Mount Arlington vs Hopatcong, NJ
- Mount Arlington vs Ledgewood, NJ
- Mount Arlington vs Wharton, NJ
- Mount Arlington vs Succasunna, NJ
- Mount Arlington vs Dover, NJ
- Mount Arlington vs New York, NY
- Mount Arlington vs Los Angeles, CA
- Mount Arlington vs Chicago, IL
- Mount Arlington vs Houston, TX
- Mount Arlington vs Phoenix, AZ
- Mount Arlington 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).