Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 50°F annual avg 3 stations
Sussex, NJ Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 50°F
- Avg annual temp
- 64/100
- Comfort score
- 41.0"
- Annual precip
- 164d
- Growing season
30-year climate normals from 3 weather stations (1991-2020).
The climate verdict for Sussex
Sussex, New Jersey averages 50°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 50°F
- yearly average temperature, NOAA normal
- 64/100
- comfort score, milder than 51% of U.S. cities
- 41.0"
- precipitation, annual total
- 164 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
50°F (10°C)
Avg High
61°F
Avg Low
39°F
Annual Precip
41.0"
Comfort Score
64/100
Good
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
41.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Sussex) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Sussex area.
How Sussex compares to every U.S. city
Sussex's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 Top 49% higher than 51% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Sussex
MethodologyZooming out from Sussex's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 18°F (-8°C) | 27°F (-3°C) | 2.6" | N/A | 27.9 | 0.0 |
| February | 39°F (4°C) | 20°F (-7°C) | 29°F (-1°C) | 2.2" | N/A | 25.3 | 0.0 |
| March | 48°F (9°C) | 27°F (-3°C) | 38°F (3°C) | 3.2" | N/A | 22.2 | 0.0 |
| April | 61°F (16°C) | 37°F (3°C) | 49°F (9°C) | 3.4" | N/A | 9.7 | 0.2 |
| May | 71°F (22°C) | 47°F (8°C) | 59°F (15°C) | 3.7" | N/A | 1.3 | 0.5 |
| June | 80°F (26°C) | 56°F (13°C) | 68°F (20°C) | 3.7" | N/A | 0.0 | 1.7 |
| July | 84°F (29°C) | 61°F (16°C) | 72°F (22°C) | 4.1" | N/A | 0.0 | 5.1 |
| August | 82°F (28°C) | 60°F (15°C) | 71°F (22°C) | 3.9" | N/A | 0.0 | 3.2 |
| September | 75°F (24°C) | 51°F (11°C) | 63°F (17°C) | 3.8" | N/A | 0.1 | 0.9 |
| October | 64°F (18°C) | 40°F (5°C) | 52°F (11°C) | 4.2" | N/A | 6.0 | 0.0 |
| November | 51°F (11°C) | 31°F (-1°C) | 41°F (5°C) | 3.0" | N/A | 17.0 | 0.0 |
| December | 41°F (5°C) | 24°F (-5°C) | 32°F (0°C) | 3.1" | N/A | 25.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.6"
10.5 days with precipitation
February 2.2"
10.1 days with precipitation
March 3.2"
11.5 days with precipitation
April 3.4"
12.2 days with precipitation
May 3.7"
14.0 days with precipitation
June 3.7"
14.3 days with precipitation
July 4.1"
14.5 days with precipitation
August 3.9"
16.3 days with precipitation
September 3.8"
13.7 days with precipitation
October 4.2"
11.4 days with precipitation
November 3.0"
9.7 days with precipitation
December 3.1"
11.3 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 12
50% probability date
Last Spring Freeze
May 1
50% probability date
Growing Season
164 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,048
Higher = more heating needed
Cooling Degree Days
639
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Sussex's climate means for you
Sussex runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 164 frost-free days, with the last spring freeze near May 1 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,048 heating and 639 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Sussex, NJ
An annual average temperature of 50°F, ranging from a mean daily high of 61°F to a mean daily low of 39°F is what the NOAA 1991–2020 climate normals report for Sussex, New Jersey. July is typically the warmest month of the year, while January is the coldest. That baseline comes from 3 weather stations and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Sussex sees about 41.0 inches of precipitation a year, with seasonal snowfall possible. The frost-free season averages 164 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 1 and the first fall freeze near October 12. On the energy side, 6,048 heating degree days and 639 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Sussex scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Sussex, NJ? ▼
The average annual temperature in Sussex, New Jersey is 50°F. The warmest month averages 84°F (29°C) and the coldest averages 18°F (-8°C).
How much rain does Sussex get? ▼
Sussex receives 41.0 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Sussex? ▼
Sussex has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in Sussex? ▼
Sussex has approximately 164 frost-free days per year, with the last spring freeze around May 1 and the first fall freeze around October 12.
How much energy does heating and cooling require in Sussex? ▼
Sussex has 6,048 heating degree days and 639 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Sussex climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 3 weather stations near Sussex.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00054793. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.