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Port Jefferson, NY vs Stony Brook University, NY weather comparison

Port Jefferson

NY

Port Jefferson and Stony Brook University have remarkably similar climates.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Port Jefferson, NY and Stony Brook University, NY
Port JeffersonMetricStony Brook University
205 daysSunny daysclear or partly cloudy skies205 days
47 inPrecipitationper year47 in
121 daysWet daysrain or snow per year121 days
31 inSnowfallper year32 in
11 daysHot daysabove 90 °F14 days
85 daysFreezing nightsat or below 32 °F90 days
73%Humidityaverage relative73%
54 °FAverage temperatureyear round54 °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.

Port JeffersonStony Brook University

Daily highs

406080JanMarMayJulSepNovPort Jefferson, Jan: 40 °FPort Jefferson, Feb: 42 °FPort Jefferson, Mar: 49 °FPort Jefferson, Apr: 62 °FPort Jefferson, May: 71 °FPort Jefferson, Jun: 78 °FPort Jefferson, Jul: 83 °FPort Jefferson, Aug: 82 °FPort Jefferson, Sep: 75 °FPort Jefferson, Oct: 64 °FPort Jefferson, Nov: 55 °FPort Jefferson, Dec: 46 °FStony Brook University, Jan: 40 °FStony Brook University, Feb: 42 °FStony Brook University, Mar: 49 °FStony Brook University, Apr: 60 °FStony Brook University, May: 70 °FStony Brook University, Jun: 78 °FStony Brook University, Jul: 83 °FStony Brook University, Aug: 82 °FStony Brook University, Sep: 75 °FStony Brook University, Oct: 64 °FStony Brook University, Nov: 54 °FStony Brook University, Dec: 45 °F

Daily lows

4060JanMarMayJulSepNovPort Jefferson, Jan: 26 °FPort Jefferson, Feb: 27 °FPort Jefferson, Mar: 33 °FPort Jefferson, Apr: 42 °FPort Jefferson, May: 51 °FPort Jefferson, Jun: 61 °FPort Jefferson, Jul: 67 °FPort Jefferson, Aug: 66 °FPort Jefferson, Sep: 61 °FPort Jefferson, Oct: 49 °FPort Jefferson, Nov: 40 °FPort Jefferson, Dec: 32 °FStony Brook University, Jan: 26 °FStony Brook University, Feb: 26 °FStony Brook University, Mar: 32 °FStony Brook University, Apr: 41 °FStony Brook University, May: 50 °FStony Brook University, Jun: 60 °FStony Brook University, Jul: 66 °FStony Brook University, Aug: 66 °FStony Brook University, Sep: 60 °FStony Brook University, Oct: 49 °FStony Brook University, Nov: 39 °FStony Brook University, Dec: 31 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Jefferson high404249627178838275645546
Stony Brook University high404249607078838275645445
Port Jefferson low262733425161676661494032
Stony Brook University low262632415060666660493931

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Port JeffersonStony Brook University
0.02.04.0JanMarMayJulSepNovPort Jefferson, Jan: 3.7 inPort Jefferson, Feb: 3.4 inPort Jefferson, Mar: 4.6 inPort Jefferson, Apr: 3.9 inPort Jefferson, May: 3.4 inPort Jefferson, Jun: 3.6 inPort Jefferson, Jul: 3.2 inPort Jefferson, Aug: 4.0 inPort Jefferson, Sep: 3.8 inPort Jefferson, Oct: 4.4 inPort Jefferson, Nov: 3.7 inPort Jefferson, Dec: 4.8 inStony Brook University, Jan: 3.7 inStony Brook University, Feb: 3.4 inStony Brook University, Mar: 4.6 inStony Brook University, Apr: 3.9 inStony Brook University, May: 3.4 inStony Brook University, Jun: 3.6 inStony Brook University, Jul: 3.2 inStony Brook University, Aug: 4.0 inStony Brook University, Sep: 3.8 inStony Brook University, Oct: 4.4 inStony Brook University, Nov: 3.7 inStony Brook University, Dec: 4.8 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Jefferson3.73.44.63.93.43.63.24.03.84.43.74.8
Stony Brook University3.73.44.63.93.43.63.24.03.84.43.74.8

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Port JeffersonStony Brook University
01020JanMarMayJulSepNovPort Jefferson, Jan: 17 daysPort Jefferson, Feb: 16 daysPort Jefferson, Mar: 17 daysPort Jefferson, Apr: 16 daysPort Jefferson, May: 15 daysPort Jefferson, Jun: 16 daysPort Jefferson, Jul: 19 daysPort Jefferson, Aug: 19 daysPort Jefferson, Sep: 18 daysPort Jefferson, Oct: 19 daysPort Jefferson, Nov: 17 daysPort Jefferson, Dec: 16 daysStony Brook University, Jan: 17 daysStony Brook University, Feb: 16 daysStony Brook University, Mar: 17 daysStony Brook University, Apr: 16 daysStony Brook University, May: 15 daysStony Brook University, Jun: 16 daysStony Brook University, Jul: 19 daysStony Brook University, Aug: 19 daysStony Brook University, Sep: 18 daysStony Brook University, Oct: 19 daysStony Brook University, Nov: 17 daysStony Brook University, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Jefferson171617161516191918191716
Stony Brook University171617161516191918191716

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

See the full Port Jefferson, NY climate profile

More New York cities

Stony Brook University vs another city

See the full Stony Brook University, NY climate profile

More New York cities

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).