Kennett Square Weather Records (USC00364533)

Record envelope, standing records and threshold days for Kennett Square (USC00364533), Pennsylvania, United States, with 31 years of record.

Key Facts for Kennett Square

Kennett Square (USC00364533) is a weather station in Pennsylvania, United States at 39.85 latitude and -75.72 longitude, 104 m (340 ft) above sea level.
The station reports from 1894 to 1924, 31 years of record.
1,464 records set at Kennett Square still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Pennsylvania, United States, 39.85 latitude, -75.72 longitude.
Elevation: 104 m (340 ft).
Period of record: 1894 to 1924, 31 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 Kennett Square. 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 Kennett Square, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-21.1 C (-6.0 F)	n/a	n/a
Feb	20.0 C (68.0 F)	-25.0 C (-13.0 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-16.1 C (3.0 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-7.8 C (18.0 F)	n/a	n/a
May	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Jul	38.3 C (100.9 F)	8.3 C (46.9 F)	n/a	n/a
Aug	37.8 C (100.0 F)	6.1 C (43.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	1.1 C (34.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-10.6 C (12.9 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-17.8 C (0.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kennett Square still stand. 1896 holds the most, with 101.

Standing records at Kennett Square by the year they were set
Year set	Standing records
1894	62
1895	81
1896	101
1897	48
1898	70
1899	66
1900	82
1901	47
1902	37
1903	59
1904	46
1905	37
1906	37
1907	56
1908	41
1909	57
1910	52
1911	48
1912	48
1913	40
1914	56
1915	35
1916	40
1919	44
1920	41
1921	40
1922	33
1923	31
1924	29

Wettest Day of Each Month

Aug: 128.0 mm (5.0 in)

The wettest day on record for each calendar month at Kennett Square. The most was 128.0 mm (5.0 in) on 31 August 1911.

Record daily precipitation for each month at Kennett Square
Month	Record daily precipitation (mm)	Date
Jan	72.1 mm (2.8 in)	12 January 1915
Feb	87.9 mm (3.5 in)	6 February 1896
Mar	63.8 mm (2.5 in)	14 March 1912
Apr	60.7 mm (2.4 in)	27 April 1913
May	94.7 mm (3.7 in)	21 May 1894
Jun	86.4 mm (3.4 in)	10 June 1903
Jul	82.0 mm (3.2 in)	22 July 1897
Aug	128.0 mm (5.0 in)	31 August 1911
Sep	77.0 mm (3.0 in)	26 September 1902
Oct	71.1 mm (2.8 in)	23 October 1912
Nov	64.8 mm (2.6 in)	24 November 1901
Dec	96.8 mm (3.8 in)	7 December 1914

Period of Record Coverage

1894 to 1924

29 years of record at Kennett Square, 1894 to 1924. 6 years have data for under 90 percent of days and are left out of rankings: 1905, 1906, 1907, 1922, 1923, 1924.

Days with data per year at Kennett Square
Year	Days with data	Share of year	Complete
1894	359	98%	Yes
1895	363	99%	Yes
1896	363	99%	Yes
1897	364	100%	Yes
1898	363	99%	Yes
1899	363	99%	Yes
1900	365	100%	Yes
1901	364	100%	Yes
1902	353	97%	Yes
1903	342	94%	Yes
1904	364	99%	Yes
1905	229	63%	No
1906	304	83%	No
1907	326	89%	No
1908	365	100%	Yes
1909	334	92%	Yes
1910	365	100%	Yes
1911	361	99%	Yes
1912	365	100%	Yes
1913	334	92%	Yes
1914	354	97%	Yes
1915	335	92%	Yes
1916	335	92%	Yes
1919	365	100%	Yes
1920	336	92%	Yes
1921	360	99%	Yes
1922	308	84%	No
1923	200	55%	No
1924	212	58%	No

Latest Records

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

Climate Trend

16 complete years, 1895 to 1921

One stripe for each of 16 complete years at Kennett Square, 1895 to 1921. Blue stripes are years cooler than the station's own mean of 11.4 C (52.6 F); red stripes are warmer. The coolest year was 1904, at 9.7 C (49.4 F), and the warmest was 1900, at 12.4 C (54.3 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Kennett Square as warming stripes, 1895 to 1921
Year	Annual mean temperature	Difference from the station mean
1895	11.0 C	-0.42 C
1896	11.6 C	+0.19 C
1897	11.5 C	+0.12 C
1898	12.2 C	+0.79 C
1899	11.5 C	+0.08 C
1900	12.4 C	+0.99 C
1901	11.2 C	-0.24 C
1903	11.0 C	-0.38 C
1904	9.7 C	-1.76 C
1908	11.5 C	+0.06 C
1910	11.0 C	-0.39 C
1911	11.9 C	+0.48 C
1912	11.0 C	-0.39 C
1914	11.0 C	-0.41 C
1919	11.8 C	+0.33 C
1921	12.4 C	+0.95 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

1894 to 1924

Yearly extremes at Kennett Square: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	1901	34.4 C (93.9 F)	29
Coldest night (TNn)	-25.0 C (-13.0 F)	1899	-17.8 C (0.0 F)	29
Wettest day (Rx1day)	128.0 mm (5.0 in)	1911	69.9 mm (2.8 in)	28
Wettest five days (Rx5day)	281.9 mm (11.1 in)	1919	102.0 mm (4.0 in)	28
Longest dry spell (CDD)	34 days	1914	17 days	28

Hottest day (TXx)

The hottest day of the year at Kennett Square, 1894 to 1924. The record is 38.3 C (100.9 F) in 1901, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Kennett Square by year
Year	Hottest day (TXx)
1894	35.6 C (96.1 F)
1895	36.1 C (97.0 F)
1896	36.1 C (97.0 F)
1897	36.1 C (97.0 F)
1898	37.2 C (99.0 F)
1899	36.7 C (98.1 F)
1900	37.8 C (100.0 F)
1901	38.3 C (100.9 F)
1902	32.8 C (91.0 F)
1903	33.3 C (91.9 F)
1904	33.3 C (91.9 F)
1905	34.4 C (93.9 F)
1906	33.3 C (91.9 F)
1907	30.6 C (87.1 F)
1908	33.9 C (93.0 F)
1909	32.8 C (91.0 F)
1910	32.2 C (90.0 F)
1911	37.8 C (100.0 F)
1912	34.4 C (93.9 F)
1913	35.0 C (95.0 F)
1914	34.4 C (93.9 F)
1915	32.8 C (91.0 F)
1916	35.0 C (95.0 F)
1919	35.0 C (95.0 F)
1920	32.2 C (90.0 F)
1921	33.3 C (91.9 F)
1922	33.9 C (93.0 F)
1923	38.3 C (100.9 F)
1924	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Kennett Square, 1894 to 1924. The record is -25.0 C (-13.0 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F).

Coldest night (TNn) at Kennett Square by year
Year	Coldest night (TNn)
1894	-16.1 C (3.0 F)
1895	-21.1 C (-6.0 F)
1896	-18.3 C (-0.9 F)
1897	-15.6 C (3.9 F)
1898	-17.8 C (0.0 F)
1899	-25.0 C (-13.0 F)
1900	-17.8 C (0.0 F)
1901	-14.4 C (6.1 F)
1902	-15.0 C (5.0 F)
1903	-20.0 C (-4.0 F)
1904	-20.6 C (-5.1 F)
1905	-19.4 C (-2.9 F)
1906	-12.2 C (10.0 F)
1907	-18.9 C (-2.0 F)
1908	-16.1 C (3.0 F)
1909	-15.0 C (5.0 F)
1910	-17.8 C (0.0 F)
1911	-11.1 C (12.0 F)
1912	-21.1 C (-6.0 F)
1913	-13.9 C (7.0 F)
1914	-18.3 C (-0.9 F)
1915	-11.1 C (12.0 F)
1916	-16.7 C (1.9 F)
1919	-17.8 C (0.0 F)
1920	-17.8 C (0.0 F)
1921	-15.6 C (3.9 F)
1922	-17.8 C (0.0 F)
1923	-6.7 C (19.9 F)
1924	-8.9 C (16.0 F)

Wettest day (Rx1day)

The wettest day of the year at Kennett Square, 1894 to 1924. The record is 128.0 mm (5.0 in) in 1911, marked on the chart; the median year is 69.9 mm (2.8 in).

Wettest day (Rx1day) at Kennett Square by year
Year	Wettest day (Rx1day)
1894	94.7 mm (3.7 in)
1895	52.1 mm (2.1 in)
1896	87.9 mm (3.5 in)
1897	82.0 mm (3.2 in)
1898	51.1 mm (2.0 in)
1899	42.2 mm (1.7 in)
1900	69.9 mm (2.8 in)
1901	69.9 mm (2.8 in)
1902	77.0 mm (3.0 in)
1903	86.4 mm (3.4 in)
1904	66.3 mm (2.6 in)
1905	38.4 mm (1.5 in)
1906	69.9 mm (2.8 in)
1907	70.6 mm (2.8 in)
1908	75.9 mm (3.0 in)
1909	94.7 mm (3.7 in)
1910	69.9 mm (2.8 in)
1911	128.0 mm (5.0 in)
1912	73.2 mm (2.9 in)
1913	60.7 mm (2.4 in)
1914	96.8 mm (3.8 in)
1915	72.1 mm (2.8 in)
1916	58.9 mm (2.3 in)
1919	75.9 mm (3.0 in)
1920	63.5 mm (2.5 in)
1921	n/a
1922	6.4 mm (0.25 in)
1923	59.7 mm (2.4 in)
1924	54.6 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kennett Square, 1894 to 1924. The record is 281.9 mm (11.1 in) in 1919, marked on the chart; the median year is 102.0 mm (4.0 in).

Wettest five days (Rx5day) at Kennett Square by year
Year	Wettest five days (Rx5day)
1894	235.4 mm (9.3 in)
1895	68.6 mm (2.7 in)
1896	100.4 mm (4.0 in)
1897	119.6 mm (4.7 in)
1898	78.8 mm (3.1 in)
1899	51.3 mm (2.0 in)
1900	69.9 mm (2.8 in)
1901	121.8 mm (4.8 in)
1902	125.1 mm (4.9 in)
1903	145.6 mm (5.7 in)
1904	121.9 mm (4.8 in)
1905	63.0 mm (2.5 in)
1906	132.9 mm (5.2 in)
1907	103.6 mm (4.1 in)
1908	78.2 mm (3.1 in)
1909	94.7 mm (3.7 in)
1910	103.6 mm (4.1 in)
1911	189.5 mm (7.5 in)
1912	89.6 mm (3.5 in)
1913	118.4 mm (4.7 in)
1914	120.1 mm (4.7 in)
1915	120.5 mm (4.7 in)
1916	69.8 mm (2.7 in)
1919	281.9 mm (11.1 in)
1920	81.7 mm (3.2 in)
1921	n/a
1922	10.9 mm (0.4 in)
1923	70.9 mm (2.8 in)
1924	96.5 mm (3.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kennett Square, 1894 to 1924. The record is 34 days in 1914, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Kennett Square by year
Year	Longest dry spell (CDD)
1894	17 days
1895	8 days
1896	11 days
1897	17 days
1898	12 days
1899	21 days
1900	16 days
1901	28 days
1902	22 days
1903	18 days
1904	18 days
1905	14 days
1906	17 days
1907	26 days
1908	16 days
1909	18 days
1910	19 days
1911	23 days
1912	27 days
1913	13 days
1914	34 days
1915	18 days
1916	14 days
1919	14 days
1920	15 days
1921	n/a
1922	7 days
1923	13 days
1924	27 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.

Download the Data

Data for Kennett Square standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kennett Square 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 2026-10-14 (14 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).