Caldwell Essex County, NJ Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Caldwell Essex County's primary NOAA station, CALDWELL ESSEX CO AP.
The climate verdict for Caldwell Essex County
Caldwell Essex County, New Jersey has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 53°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 53°F
- annual average temperature (NOAA normal)
- 68/100
- comfort score, above 56% of station-mapped location scores
- 44.9"
- annual precipitation
- 197 days
- frost-free days per growing season
Caldwell Essex County: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00054743 · Caldwell Essex County, NJ 53°F mean · 44.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 53°F
- RANK-MID #3,705
- PHOTO-FINISH ≈ Philadelphia/mt…
- PRCP-MID 44.9"
- SWING-WIDE 45°F
- COMF-MID 68/100
- LOAD-HEAT 5,272 HDD
- STN-1 USW00054743
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Philadelphia/mt Holly, NJ (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every NJ station list.
- Caldwell Essex… (this station) 53°F
- Hot Lambertville, NJ 53°F
- Near Philadelphia/mt…, NJ 53°F
- Near Little Falls, NJ 53°F
- Near Seymour, IN 53°F
Climate Living Index · Caldwell Essex County
Caldwell Essex County: 62/100 · grade C
Caldwell Essex County publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Caldwell Essex County, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 112 calendar days | 69/100 · C |
| Precipitation balance | 44.9 in · 9.9 from 35 in | 65/100 · C |
| Frost-free season | 197 days/year | 62/100 · C |
| Annual temperature balance | 53.1°F · 14.4° from 67.5°F | 53/100 · D |
Caldwell Essex County · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Caldwell Essex County is a continental Köppen climate: Dfa
Coldest-month mean 30.6°F and warmest-month mean 75.6°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 75.6°F
- Coldest month
- 30.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Caldwell Essex County sits across the climate record
Three NOAA fields for Caldwell Essex County's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 54th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 68th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 59th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Caldwell Essex County compares across U.S. station-mapped locations
Caldwell Essex County's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 38°F (3°C) | 23°F (-5°C) | 31°F (-1°C) | 3.0" | 25.7 | 0.0 |
| February | 41°F (5°C) | 24°F (-5°C) | 33°F (0°C) | 2.5" | 23.8 | 0.0 |
| March | 49°F (10°C) | 31°F (0°C) | 40°F (5°C) | 4.1" | 17.6 | 0.0 |
| April | 62°F (17°C) | 41°F (5°C) | 51°F (11°C) | 3.7" | 4.0 | 0.4 |
| May | 72°F (22°C) | 51°F (11°C) | 62°F (16°C) | 3.4" | 0.0 | 1.2 |
| June | 81°F (27°C) | 60°F (16°C) | 70°F (21°C) | 4.3" | 0.0 | 3.7 |
| July | 85°F (30°C) | 66°F (19°C) | 76°F (24°C) | 4.3" | 0.0 | 9.3 |
| August | 84°F (29°C) | 64°F (18°C) | 74°F (23°C) | 4.5" | 0.0 | 5.2 |
| September | 76°F (24°C) | 57°F (14°C) | 66°F (19°C) | 3.7" | 0.0 | 1.4 |
| October | 65°F (18°C) | 45°F (7°C) | 55°F (13°C) | 4.0" | 1.9 | 0.0 |
| November | 53°F (12°C) | 35°F (2°C) | 44°F (7°C) | 3.3" | 11.9 | 0.0 |
| December | 43°F (6°C) | 28°F (-2°C) | 35°F (2°C) | 4.0" | 23.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 14, short of 90°F on every date, while 112 dates carry a normal low at or below freezing, the coldest 22°F near January 25.
The freezing stretch
The normal low stays at or below 32°F into March 18, then returns to freezing around November 28, covering 112 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is June 2, when 44% of years recorded at least a hundredth of an inch. The driest is November 7 at 31%. Summed across the calendar, that is about 133 wet dates a year.
The widest day
April 30 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Caldwell Essex County.
Where Caldwell Essex County Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Caldwell Essex County earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
10.1 days with precipitation
8.9 days with precipitation
10.6 days with precipitation
11.4 days with precipitation
13.2 days with precipitation
13.0 days with precipitation
11.0 days with precipitation
12.3 days with precipitation
10.7 days with precipitation
11.7 days with precipitation
9.2 days with precipitation
10.5 days with precipitation
Caldwell Essex County spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 21%, with neither reaching the 35% that would mark a distinct wet season. Caldwell Essex County has no dry season to plan around, though it does carry a wide 45°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: August averages 4.5" and February 2.5". The three wettest months together take 29% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Caldwell Essex County's precipitation splits across the calendar
About 133 days a year record measurable precipitation here, carrying 44.9" between them, or roughly 0.34 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
October 28
50% probability date
Last Spring Freeze
April 14
50% probability date
Growing Season
197 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,272
Higher = more heating needed
Cooling Degree Days
973
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside NJ closest to Caldwell Essex County on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (53°F here).
- Allentown, PA 53°F · 0.0°F off
- Dallas, OR 53°F · 0.0°F off
- Danville, IL 53°F · 0.0°F off
- Decatur, IL 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (44.9" here), excluding temperature-peer places.
- Island Pond, VT 44.9" · 0.0" off
- Parsons, KS 44.9" · 0.0" off
- Marlinton, WV 44.9" · 0.0" off
- Vienna, MO 44.9" · 0.0" off
Data-derived climate profile
How Caldwell Essex County's climate pattern fits together
heating led · moderate · mid swing
Caldwell Essex County's energy balance leans toward cold weather: 5,272 annual heating degree days against 973 for cooling. Its 45.0°F seasonal range still makes the monthly rows more useful than the annual average alone.
Caldwell Essex County's frost-free season lasts about 197 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Caldwell Essex County's middle-range seasonal profile. The measured spread is 45.0°F. The annual average is 53°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Caldwell Essex County's 44.9 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Caldwell Essex County's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Caldwell Essex County, not an official NOAA class or a year-ahead forecast.
Questions about Caldwell Essex County's climate
How much rain does Caldwell Essex County get? ▼
How cold does Caldwell Essex County get in winter? ▼
How much energy does heating and cooling require in Caldwell Essex County? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Caldwell Essex County's primary station: CALDWELL ESSEX CO AP (USW00054743). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Caldwell Essex County; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Caldwell Essex County comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.