Port Jefferson and Terryville have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Port Jefferson | Metric | Terryville |
|---|---|---|
| 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 | 32 in |
| 11 days | Hot daysabove 90 °F | 10 days |
| 85 days | Freezing nightsat or below 32 °F | 84 days |
| 73% | Humidityaverage relative | 73% |
| 54 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Jefferson high | 40 | 42 | 49 | 62 | 71 | 78 | 83 | 82 | 75 | 64 | 55 | 46 |
| Terryville high | 41 | 42 | 50 | 63 | 71 | 78 | 83 | 82 | 75 | 65 | 55 | 46 |
| Port Jefferson low | 26 | 27 | 33 | 42 | 51 | 61 | 67 | 66 | 61 | 49 | 40 | 32 |
| Terryville low | 26 | 27 | 33 | 42 | 51 | 61 | 67 | 67 | 61 | 49 | 40 | 32 |
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 |
| Terryville | 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 |
| Terryville | 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 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
Terryville vs another city
- Terryville vs Port Jefferson Station, NY
- Terryville vs East Setauket, NY
- Terryville vs Selden, NY
- Terryville vs Mount Sinai, NY
- Terryville vs Coram, NY
- Terryville vs New York, NY
- Terryville vs Los Angeles, CA
- Terryville vs Chicago, IL
- Terryville vs Houston, TX
- Terryville vs Phoenix, AZ
- Terryville 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).