Chatsworth Weather Records (USC00281598)

Record envelope, standing records and threshold days for Chatsworth (USC00281598), New Jersey, United States, with 32 years of record.

Key Facts for Chatsworth

Chatsworth (USC00281598) is a weather station in New Jersey, United States at 39.82 latitude and -74.53 longitude, 31 m (102 ft) above sea level.
The station reports from 1948 to 1979, 32 years of record.
1,464 records set at Chatsworth still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: New Jersey, United States, 39.82 latitude, -74.53 longitude.
Elevation: 31 m (102 ft).
Period of record: 1948 to 1979, 32 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Chatsworth. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Chatsworth, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	24.4 C (75.9 F)	-26.1 C (-15.0 F)	n/a	n/a
Feb	23.9 C (75.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-17.2 C (1.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	-9.4 C (15.1 F)	n/a	n/a
May	36.1 C (97.0 F)	-4.4 C (24.1 F)	n/a	n/a
Jun	39.4 C (102.9 F)	1.1 C (34.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	6.1 C (43.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-11.1 C (12.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-12.8 C (9.0 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-20.0 C (-4.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chatsworth still stand. 1949 holds the most, with 86.

Standing records at Chatsworth by the year they were set
Year set	Standing records
1948	20
1949	86
1950	73
1951	59
1952	32
1953	64
1954	52
1955	45
1956	14
1957	5
1958	13
1959	1
1960	27
1961	59
1962	46
1963	67
1964	61
1965	65
1966	54
1967	62
1968	40
1969	38
1970	52
1971	49
1972	44
1973	48
1974	45
1975	42
1976	64
1977	51
1978	50
1979	36

Wettest Day of Each Month

Sep: 179.6 mm (7.1 in)

The wettest day on record for each calendar month at Chatsworth. The most was 179.6 mm (7.1 in) on 12 September 1960.

Record daily precipitation for each month at Chatsworth
Month	Record daily precipitation (mm)	Date
Jan	63.5 mm (2.5 in)	21 January 1979
Feb	50.8 mm (2.0 in)	13 February 1966
Mar	62.2 mm (2.4 in)	13 March 1953
Apr	81.0 mm (3.2 in)	15 April 1970
May	95.3 mm (3.8 in)	24 May 1978
Jun	52.6 mm (2.1 in)	24 June 1969
Jul	112.5 mm (4.4 in)	5 July 1965
Aug	137.4 mm (5.4 in)	27 August 1971
Sep	179.6 mm (7.1 in)	12 September 1960
Oct	80.0 mm (3.1 in)	7 October 1972
Nov	73.7 mm (2.9 in)	25 November 1950
Dec	70.4 mm (2.8 in)	26 December 1969

Period of Record Coverage

1948 to 1979

32 years of record at Chatsworth, 1948 to 1979. 9 years have data for under 90 percent of days and are left out of rankings: 1948, 1954, 1956, 1957, 1958, 1959, 1960, 1977 and others.

Days with data per year at Chatsworth
Year	Days with data	Share of year	Complete
1948	151	41%	No
1949	354	97%	Yes
1950	354	97%	Yes
1951	349	96%	Yes
1952	357	98%	Yes
1953	353	97%	Yes
1954	262	72%	No
1955	340	93%	Yes
1956	106	29%	No
1957	31	8%	No
1958	117	32%	No
1959	28	8%	No
1960	248	68%	No
1961	359	98%	Yes
1962	360	99%	Yes
1963	360	99%	Yes
1964	362	99%	Yes
1965	358	98%	Yes
1966	361	99%	Yes
1967	345	95%	Yes
1968	353	96%	Yes
1969	352	96%	Yes
1970	346	95%	Yes
1971	353	97%	Yes
1972	361	99%	Yes
1973	332	91%	Yes
1974	357	98%	Yes
1975	358	98%	Yes
1976	360	98%	Yes
1977	324	89%	No
1978	360	99%	Yes
1979	208	57%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

22 complete years, 1949 to 1978

One stripe for each of 22 complete years at Chatsworth, 1949 to 1978. Blue stripes are years cooler than the station's own mean of 12.0 C (53.5 F); red stripes are warmer. The coolest year was 1967, at 11.1 C (51.9 F), and the warmest was 1949, at 13.4 C (56.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Chatsworth as warming stripes, 1949 to 1978
Year	Annual mean temperature	Difference from the station mean
1949	13.4 C	+1.38 C
1950	11.7 C	-0.25 C
1951	12.7 C	+0.69 C
1952	12.7 C	+0.70 C
1953	13.1 C	+1.13 C
1955	12.2 C	+0.25 C
1961	11.9 C	-0.04 C
1962	11.1 C	-0.84 C
1963	11.1 C	-0.84 C
1964	11.7 C	-0.32 C
1965	11.5 C	-0.49 C
1966	11.3 C	-0.67 C
1967	11.1 C	-0.91 C
1968	11.7 C	-0.31 C
1969	11.6 C	-0.41 C
1970	11.9 C	-0.07 C
1971	12.4 C	+0.39 C
1972	11.8 C	-0.15 C
1974	12.5 C	+0.55 C
1975	12.9 C	+0.93 C
1976	11.8 C	-0.17 C
1978	11.4 C	-0.54 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1948 to 1979

Yearly extremes at Chatsworth: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1977	36.1 C (97.0 F)	32
Coldest night (TNn)	-26.1 C (-15.0 F)	1965	-17.8 C (0.0 F)	32
Wettest day (Rx1day)	179.6 mm (7.1 in)	1960	75.1 mm (3.0 in)	32
Wettest five days (Rx5day)	237.0 mm (9.3 in)	1972	109.0 mm (4.3 in)	32
Longest dry spell (CDD)	30 days	1955	19 days	32

Hottest day (TXx)

The hottest day of the year at Chatsworth, 1948 to 1979. The record is 40.0 C (104.0 F) in 1977, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Chatsworth by year
Year	Hottest day (TXx)
1948	37.8 C (100.0 F)
1949	37.2 C (99.0 F)
1950	36.1 C (97.0 F)
1951	35.6 C (96.1 F)
1952	39.4 C (102.9 F)
1953	38.9 C (102.0 F)
1954	39.4 C (102.9 F)
1955	38.3 C (100.9 F)
1956	28.9 C (84.0 F)
1957	15.6 C (60.1 F)
1958	27.8 C (82.0 F)
1959	15.0 C (59.0 F)
1960	33.9 C (93.0 F)
1961	34.4 C (93.9 F)
1962	36.1 C (97.0 F)
1963	36.1 C (97.0 F)
1964	38.3 C (100.9 F)
1965	35.0 C (95.0 F)
1966	37.2 C (99.0 F)
1967	33.9 C (93.0 F)
1968	36.1 C (97.0 F)
1969	35.6 C (96.1 F)
1970	36.1 C (97.0 F)
1971	36.1 C (97.0 F)
1972	36.1 C (97.0 F)
1973	38.3 C (100.9 F)
1974	36.1 C (97.0 F)
1975	37.8 C (100.0 F)
1976	36.1 C (97.0 F)
1977	40.0 C (104.0 F)
1978	37.2 C (99.0 F)
1979	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Chatsworth, 1948 to 1979. The record is -26.1 C (-15.0 F) in 1965, marked on the chart; the median year is -17.8 C (0.0 F).

Coldest night (TNn) at Chatsworth by year
Year	Coldest night (TNn)
1948	-20.0 C (-4.0 F)
1949	-15.0 C (5.0 F)
1950	-17.2 C (1.0 F)
1951	-16.1 C (3.0 F)
1952	-16.1 C (3.0 F)
1953	-12.8 C (9.0 F)
1954	-17.8 C (0.0 F)
1955	-17.8 C (0.0 F)
1956	-11.7 C (10.9 F)
1957	-12.2 C (10.0 F)
1958	-16.7 C (1.9 F)
1959	-13.9 C (7.0 F)
1960	-18.3 C (-0.9 F)
1961	-25.6 C (-14.1 F)
1962	-18.3 C (-0.9 F)
1963	-19.4 C (-2.9 F)
1964	-20.6 C (-5.1 F)
1965	-26.1 C (-15.0 F)
1966	-16.7 C (1.9 F)
1967	-21.7 C (-7.1 F)
1968	-21.1 C (-6.0 F)
1969	-15.6 C (3.9 F)
1970	-21.7 C (-7.1 F)
1971	-20.6 C (-5.1 F)
1972	-17.8 C (0.0 F)
1973	-16.7 C (1.9 F)
1974	-20.6 C (-5.1 F)
1975	-14.4 C (6.1 F)
1976	-17.8 C (0.0 F)
1977	-26.1 C (-15.0 F)
1978	-20.6 C (-5.1 F)
1979	-25.6 C (-14.1 F)

Wettest day (Rx1day)

The wettest day of the year at Chatsworth, 1948 to 1979. The record is 179.6 mm (7.1 in) in 1960, marked on the chart; the median year is 75.1 mm (3.0 in).

Wettest day (Rx1day) at Chatsworth by year
Year	Wettest day (Rx1day)
1948	53.6 mm (2.1 in)
1949	62.0 mm (2.4 in)
1950	73.7 mm (2.9 in)
1951	62.2 mm (2.4 in)
1952	59.4 mm (2.3 in)
1953	80.0 mm (3.1 in)
1954	51.3 mm (2.0 in)
1955	76.5 mm (3.0 in)
1956	33.0 mm (1.3 in)
1957	30.7 mm (1.2 in)
1958	45.7 mm (1.8 in)
1959	8.9 mm (0.35 in)
1960	179.6 mm (7.1 in)
1961	85.9 mm (3.4 in)
1962	97.5 mm (3.8 in)
1963	63.5 mm (2.5 in)
1964	100.6 mm (4.0 in)
1965	112.5 mm (4.4 in)
1966	115.1 mm (4.5 in)
1967	104.9 mm (4.1 in)
1968	71.1 mm (2.8 in)
1969	82.3 mm (3.2 in)
1970	81.0 mm (3.2 in)
1971	137.4 mm (5.4 in)
1972	115.6 mm (4.6 in)
1973	69.9 mm (2.8 in)
1974	66.0 mm (2.6 in)
1975	49.5 mm (1.9 in)
1976	96.8 mm (3.8 in)
1977	128.3 mm (5.1 in)
1978	127.0 mm (5.0 in)
1979	63.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chatsworth, 1948 to 1979. The record is 237.0 mm (9.3 in) in 1972, marked on the chart; the median year is 109.0 mm (4.3 in).

Wettest five days (Rx5day) at Chatsworth by year
Year	Wettest five days (Rx5day)
1948	97.3 mm (3.8 in)
1949	100.3 mm (3.9 in)
1950	98.1 mm (3.9 in)
1951	100.3 mm (3.9 in)
1952	150.9 mm (5.9 in)
1953	99.3 mm (3.9 in)
1954	58.7 mm (2.3 in)
1955	130.3 mm (5.1 in)
1956	68.9 mm (2.7 in)
1957	57.3 mm (2.3 in)
1958	79.5 mm (3.1 in)
1959	10.2 mm (0.4 in)
1960	205.5 mm (8.1 in)
1961	103.9 mm (4.1 in)
1962	110.0 mm (4.3 in)
1963	90.5 mm (3.6 in)
1964	141.3 mm (5.6 in)
1965	123.4 mm (4.9 in)
1966	139.3 mm (5.5 in)
1967	107.9 mm (4.2 in)
1968	107.2 mm (4.2 in)
1969	195.1 mm (7.7 in)
1970	116.1 mm (4.6 in)
1971	184.6 mm (7.3 in)
1972	237.0 mm (9.3 in)
1973	76.8 mm (3.0 in)
1974	83.6 mm (3.3 in)
1975	146.0 mm (5.7 in)
1976	115.9 mm (4.6 in)
1977	132.1 mm (5.2 in)
1978	177.8 mm (7.0 in)
1979	115.0 mm (4.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chatsworth, 1948 to 1979. The record is 30 days in 1955, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Chatsworth by year
Year	Longest dry spell (CDD)
1948	17 days
1949	18 days
1950	16 days
1951	15 days
1952	19 days
1953	17 days
1954	12 days
1955	30 days
1956	13 days
1957	7 days
1958	11 days
1959	7 days
1960	18 days
1961	21 days
1962	21 days
1963	24 days
1964	30 days
1965	26 days
1966	16 days
1967	19 days
1968	22 days
1969	23 days
1970	16 days
1971	25 days
1972	18 days
1973	25 days
1974	26 days
1975	26 days
1976	28 days
1977	18 days
1978	19 days
1979	11 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

22 years with a frost

Across 22 years with a frost, the median last spring frost at Chatsworth falls on 1 May and the median first autumn frost on 8 October, which leaves a median of 163 days between them.

Frost dates and growing season at Chatsworth
Measure	Median, all years	Earliest period	Recent period (1949 to 1978)	Recent against earliest	Fitted trend
Last spring frost	1 May	n/a	1 May	n/a	n/a
First autumn frost	8 October	n/a	8 October	n/a	n/a
Growing days	163 days	n/a	163 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Chatsworth standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chatsworth threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).