Port Jefferson and Sound Beach have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Port Jefferson | Metric | Sound Beach |
|---|---|---|
| 205 days | Sunny daysclear or partly cloudy skies | 205 days |
| 47 in | Precipitationper year | 47 in |
| 121 days | Wet daysrain or snow per year | 121 days |
| 31 in | Snowfallper year | 31 in |
| 11 days | Hot daysabove 90 °F | 9 days |
| 85 days | Freezing nightsat or below 32 °F | 86 days |
| 73% | Humidityaverage relative | 73% |
| 54 °F | Average temperatureyear round | 54 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Jefferson high | 40 | 42 | 49 | 62 | 71 | 78 | 83 | 82 | 75 | 64 | 55 | 46 |
| Sound Beach high | 40 | 42 | 49 | 62 | 71 | 78 | 83 | 82 | 75 | 64 | 55 | 46 |
| Port Jefferson low | 26 | 27 | 33 | 42 | 51 | 61 | 67 | 66 | 61 | 49 | 40 | 32 |
| Sound Beach low | 26 | 27 | 32 | 42 | 51 | 61 | 67 | 66 | 60 | 48 | 40 | 31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Jefferson | 3.7 | 3.4 | 4.6 | 3.9 | 3.4 | 3.6 | 3.2 | 4.0 | 3.8 | 4.4 | 3.7 | 4.8 |
| Sound Beach | 3.7 | 3.4 | 4.6 | 3.9 | 3.4 | 3.6 | 3.2 | 4.0 | 3.8 | 4.4 | 3.7 | 4.8 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Jefferson | 17 | 16 | 17 | 16 | 15 | 16 | 19 | 19 | 18 | 19 | 17 | 16 |
| Sound Beach | 17 | 16 | 17 | 16 | 15 | 16 | 19 | 19 | 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.
Port Jefferson vs another city
- Port Jefferson vs Port Jefferson Station, NY
- Port Jefferson vs Mount Sinai, NY
- Port Jefferson vs Terryville, NY
- Port Jefferson vs East Setauket, NY
- Port Jefferson vs Miller Place, NY
- Port Jefferson vs Stony Brook University, NY
- Port Jefferson vs New York, NY
- Port Jefferson vs Los Angeles, CA
- Port Jefferson vs Chicago, IL
- Port Jefferson vs Houston, TX
- Port Jefferson vs Phoenix, AZ
- Port Jefferson vs Philadelphia, PA
Sound Beach vs another city
- Sound Beach vs Miller Place, NY
- Sound Beach vs Rocky Point, NY
- Sound Beach vs Mount Sinai, NY
- Sound Beach vs Middle Island, NY
- Sound Beach vs East Shoreham, NY
- Sound Beach vs New York, NY
- Sound Beach vs Los Angeles, CA
- Sound Beach vs Chicago, IL
- Sound Beach vs Houston, TX
- Sound Beach vs Phoenix, AZ
- Sound Beach 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).