Delaware Cy Reedy Poin Weather Records (USC00072625)

Record envelope, standing records and threshold days for Delaware Cy Reedy Poin (USC00072625), Delaware, United States, with 53 years of record.

Key Facts for Delaware Cy Reedy Poin

Delaware Cy Reedy Poin (USC00072625) is a weather station in Delaware, United States at 39.57 latitude and -75.58 longitude, 3 m (10 ft) above sea level.
The station reports from 1902 to 1954, 53 years of record.
1,464 records set at Delaware Cy Reedy Poin still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Delaware Cy Reedy Poin set a daily record high maximum temperature of 28.9 C (84.0 F) on 19 April 1954.

About the Station

Location: Delaware, United States, 39.57 latitude, -75.58 longitude.
Elevation: 3 m (10 ft).
Period of record: 1902 to 1954, 53 years.
Eligible elements: tmax, tmin, prcp.

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 Delaware Cy Reedy Poin. 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 Delaware Cy Reedy Poin, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.8 C (73.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-21.7 C (-7.1 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-13.9 C (7.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-10.0 C (14.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jun	37.2 C (99.0 F)	5.6 C (42.1 F)	n/a	n/a
Jul	40.0 C (104.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	38.3 C (100.9 F)	3.9 C (39.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	2.8 C (37.0 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-11.7 C (10.9 F)	n/a	n/a
Dec	21.1 C (70.0 F)	-19.4 C (-2.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Delaware Cy Reedy Poin still stand. 1930 holds the most, with 56.

Standing records at Delaware Cy Reedy Poin by the year they were set
Year set	Standing records
1908	23
1909	31
1910	29
1911	29
1912	31
1913	22
1914	46
1915	26
1916	25
1917	44
1918	49
1919	28
1920	31
1921	29
1922	20
1923	24
1924	19
1925	38
1926	30
1927	41
1928	39
1929	53
1930	56
1931	43
1932	42
1933	42
1934	43
1935	28
1936	43
1937	33
1938	30
1939	25
1940	34
1941	34
1942	31
1943	21
1944	11
1945	23
1946	33
1947	26
1948	34
1949	24
1950	28
1951	25
1952	16
1953	25
1954	7

All-Time Record Progression

1 new records

1 all-time records were set at Delaware Cy Reedy Poin between 28 August 1948 and 28 August 1948. Each dot is a new record.

Wettest Day of Each Month

Aug: 140.0 mm (5.5 in)

The wettest day on record for each calendar month at Delaware Cy Reedy Poin. The most was 140.0 mm (5.5 in) on 12 August 1928.

Record daily precipitation for each month at Delaware Cy Reedy Poin
Month	Record daily precipitation (mm)	Date
Jan	66.0 mm (2.6 in)	3 January 1936
Feb	57.7 mm (2.3 in)	20 February 1924
Mar	58.7 mm (2.3 in)	15 March 1912
Apr	98.6 mm (3.9 in)	29 April 1923
May	53.3 mm (2.1 in)	21 May 1943
Jun	93.0 mm (3.7 in)	27 June 1938
Jul	114.8 mm (4.5 in)	10 July 1917
Aug	140.0 mm (5.5 in)	12 August 1928
Sep	76.2 mm (3.0 in)	24 September 1907
Oct	118.4 mm (4.7 in)	29 October 1953
Nov	64.8 mm (2.6 in)	18 November 1935
Dec	58.4 mm (2.3 in)	12 December 1944

Period of Record Coverage

1908 to 1954

47 years of record at Delaware Cy Reedy Poin, 1908 to 1954. 8 years have data for under 90 percent of days and are left out of rankings: 1908, 1920, 1941, 1945, 1948, 1949, 1950, 1954.

Days with data per year at Delaware Cy Reedy Poin
Year	Days with data	Share of year	Complete
1908	235	64%	No
1909	362	99%	Yes
1910	361	99%	Yes
1911	360	99%	Yes
1912	356	97%	Yes
1913	362	99%	Yes
1914	362	99%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	361	99%	Yes
1918	361	99%	Yes
1919	364	100%	Yes
1920	322	88%	No
1921	365	100%	Yes
1922	364	100%	Yes
1923	364	100%	Yes
1924	364	99%	Yes
1925	364	100%	Yes
1926	363	99%	Yes
1927	344	94%	Yes
1928	366	100%	Yes
1929	362	99%	Yes
1930	361	99%	Yes
1931	363	99%	Yes
1932	364	99%	Yes
1933	355	97%	Yes
1934	359	98%	Yes
1935	343	94%	Yes
1936	332	91%	Yes
1937	363	99%	Yes
1938	364	100%	Yes
1939	361	99%	Yes
1940	339	93%	Yes
1941	328	90%	No
1942	363	99%	Yes
1943	363	99%	Yes
1944	362	99%	Yes
1945	303	83%	No
1946	364	100%	Yes
1947	362	99%	Yes
1948	299	82%	No
1949	317	87%	No
1950	319	87%	No
1951	352	96%	Yes
1952	362	99%	Yes
1953	362	99%	Yes
1954	119	33%	No

Latest Records

Latest records at Delaware Cy Reedy Poin
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 April 1954	Delaware Cy Reedy Poin, US	daily high max	28.9 C (84.0 F)	1.1 C (2.0 F)	44 years	19 of 100 (Routine)
1 March 1954	Delaware Cy Reedy Poin, US	daily high max	16.7 C (62.1 F)	0.6 C (1.1 F)	44 years	18 of 100 (Routine)
26 February 1954	Delaware Cy Reedy Poin, US	daily high min (Tie)	4.4 C (39.9 F)	tie	24 years	2 of 100 (Routine)
17 February 1954	Delaware Cy Reedy Poin, US	daily high max	21.1 C (70.0 F)	2.2 C (4.0 F)	32 years	17 of 100 (Routine)
16 February 1954	Delaware Cy Reedy Poin, US	daily high min	9.4 C (48.9 F)	5.0 C (9.0 F)	44 years	27 of 100 (Routine)
16 February 1954	Delaware Cy Reedy Poin, US	daily high max	21.7 C (71.1 F)	1.7 C (3.1 F)	32 years	16 of 100 (Routine)
21 January 1954	Delaware Cy Reedy Poin, US	daily high min	4.4 C (39.9 F)	1.1 C (2.0 F)	40 years	18 of 100 (Routine)
18 January 1954	Delaware Cy Reedy Poin, US	daily low min	-15.0 C (5.0 F)	0.6 C (1.1 F)	38 years	16 of 100 (Routine)
14 December 1953	Delaware Cy Reedy Poin, US	daily rain	39.4 mm (1.6 in)	18.1 mm (0.7 in)	32 years	32 of 100 (Routine)
10 December 1953	Delaware Cy Reedy Poin, US	daily high min	8.3 C (46.9 F)	1.1 C (2.0 F)	30 years	15 of 100 (Routine)
10 December 1953	Delaware Cy Reedy Poin, US	daily high max (Tie)	18.3 C (64.9 F)	tie	14 years	2 of 100 (Routine)
7 December 1953	Delaware Cy Reedy Poin, US	daily high min	5.6 C (42.1 F)	0.6 C (1.1 F)	28 years	13 of 100 (Routine)
23 November 1953	Delaware Cy Reedy Poin, US	daily high min	12.2 C (54.0 F)	2.2 C (4.0 F)	19 years	13 of 100 (Routine)
7 November 1953	Delaware Cy Reedy Poin, US	daily low max	4.4 C (39.9 F)	1.7 C (3.1 F)	43 years	19 of 100 (Routine)
6 November 1953	Delaware Cy Reedy Poin, US	daily low max	6.7 C (44.1 F)	1.6 C (2.9 F)	2 years	7 of 100 (Routine)
29 October 1953	Delaware Cy Reedy Poin, US	monthly rain	118.4 mm (4.7 in)	24.9 mm (1.0 in)	11 years	36 of 100 (Notable)
20 September 1953	Delaware Cy Reedy Poin, US	daily high max (Tie)	31.1 C (88.0 F)	tie	20 years	2 of 100 (Routine)
14 September 1953	Delaware Cy Reedy Poin, US	daily low min	6.7 C (44.1 F)	1.6 C (2.9 F)	7 years	9 of 100 (Routine)
3 September 1953	Delaware Cy Reedy Poin, US	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	24 years	12 of 100 (Routine)
1 September 1953	Delaware Cy Reedy Poin, US	monthly high max	37.8 C (100.0 F)	0.6 C (1.1 F)	32 years	24 of 100 (Routine)

Climate Trend

33 complete years, 1909 to 1953

One stripe for each of 33 complete years at Delaware Cy Reedy Poin, 1909 to 1953. Blue stripes are years cooler than the station's own mean of 12.8 C (55.0 F); red stripes are warmer. The coolest year was 1917, at 11.1 C (52.0 F), and the warmest was 1931, at 14.1 C (57.4 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Delaware Cy Reedy Poin as warming stripes, 1909 to 1953
Year	Annual mean temperature	Difference from the station mean
1909	12.3 C	-0.47 C
1910	12.1 C	-0.65 C
1911	12.6 C	-0.14 C
1912	12.1 C	-0.69 C
1913	13.5 C	+0.75 C
1914	12.1 C	-0.71 C
1915	12.5 C	-0.32 C
1916	12.0 C	-0.81 C
1917	11.1 C	-1.67 C
1918	12.3 C	-0.50 C
1919	12.9 C	+0.10 C
1921	13.9 C	+1.10 C
1922	13.0 C	+0.23 C
1923	12.5 C	-0.24 C
1924	11.7 C	-1.05 C
1925	12.9 C	+0.12 C
1926	11.9 C	-0.84 C
1928	12.5 C	-0.27 C
1929	12.8 C	+0.04 C
1930	13.3 C	+0.52 C
1931	14.1 C	+1.33 C
1932	13.3 C	+0.55 C
1933	13.0 C	+0.26 C
1934	12.2 C	-0.58 C
1937	13.2 C	+0.40 C
1938	13.5 C	+0.76 C
1939	13.4 C	+0.61 C
1942	13.3 C	+0.51 C
1943	12.8 C	+0.05 C
1944	13.0 C	+0.18 C
1946	13.5 C	+0.72 C
1947	12.4 C	-0.37 C
1953	13.9 C	+1.10 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1909 to 1953. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Delaware Cy Reedy Poin
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.5) per decade	0.5 F (0.2 to 0.8) per decade	1909 to 1953	33	Rise
Mean daily maximum	0.5 C (0.3 to 0.7) per decade	0.9 F (0.6 to 1.3) per decade	1909 to 1953	33	Rise
Mean daily minimum	0.03 C (-0.15 to 0.22) per decade	0.1 F (-0.3 to 0.4) per decade	1909 to 1953	33	Not clearly different from zero

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

1902 to 1954

Yearly extremes at Delaware Cy Reedy Poin: 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)	1936	35.6 C (96.1 F)	47
Coldest night (TNn)	-21.7 C (-7.1 F)	1934	-15.0 C (5.0 F)	47
Wettest day (Rx1day)	140.0 mm (5.5 in)	1928	55.9 mm (2.2 in)	53
Wettest five days (Rx5day)	190.5 mm (7.5 in)	1933	89.4 mm (3.5 in)	53
Longest dry spell (CDD)	42 days	1924	19 days	53

Hottest day (TXx)

The hottest day of the year at Delaware Cy Reedy Poin, 1902 to 1954. The record is 40.0 C (104.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Delaware Cy Reedy Poin by year
Year	Hottest day (TXx)
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	35.6 C (96.1 F)
1909	34.4 C (93.9 F)
1910	33.3 C (91.9 F)
1911	35.6 C (96.1 F)
1912	36.7 C (98.1 F)
1913	35.6 C (96.1 F)
1914	35.6 C (96.1 F)
1915	34.4 C (93.9 F)
1916	33.3 C (91.9 F)
1917	36.7 C (98.1 F)
1918	38.3 C (100.9 F)
1919	36.1 C (97.0 F)
1920	37.2 C (99.0 F)
1921	35.0 C (95.0 F)
1922	32.8 C (91.0 F)
1923	35.6 C (96.1 F)
1924	35.6 C (96.1 F)
1925	36.1 C (97.0 F)
1926	37.2 C (99.0 F)
1927	35.6 C (96.1 F)
1928	35.6 C (96.1 F)
1929	36.1 C (97.0 F)
1930	39.4 C (102.9 F)
1931	37.2 C (99.0 F)
1932	37.2 C (99.0 F)
1933	36.1 C (97.0 F)
1934	37.2 C (99.0 F)
1935	34.4 C (93.9 F)
1936	40.0 C (104.0 F)
1937	35.0 C (95.0 F)
1938	35.0 C (95.0 F)
1939	35.0 C (95.0 F)
1940	36.1 C (97.0 F)
1941	36.7 C (98.1 F)
1942	37.2 C (99.0 F)
1943	35.6 C (96.1 F)
1944	36.1 C (97.0 F)
1945	36.1 C (97.0 F)
1946	33.3 C (91.9 F)
1947	33.9 C (93.0 F)
1948	37.2 C (99.0 F)
1949	37.2 C (99.0 F)
1950	33.3 C (91.9 F)
1951	32.2 C (90.0 F)
1952	35.6 C (96.1 F)
1953	37.8 C (100.0 F)
1954	28.9 C (84.0 F)

Coldest night (TNn)

The coldest night of the year at Delaware Cy Reedy Poin, 1902 to 1954. The record is -21.7 C (-7.1 F) in 1934, marked on the chart; the median year is -15.0 C (5.0 F).

Coldest night (TNn) at Delaware Cy Reedy Poin by year
Year	Coldest night (TNn)
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	-8.3 C (17.1 F)
1909	-16.1 C (3.0 F)
1910	-16.1 C (3.0 F)
1911	-10.6 C (12.9 F)
1912	-20.0 C (-4.0 F)
1913	-11.1 C (12.0 F)
1914	-17.8 C (0.0 F)
1915	-9.4 C (15.1 F)
1916	-14.4 C (6.1 F)
1917	-19.4 C (-2.9 F)
1918	-21.1 C (-6.0 F)
1919	-15.0 C (5.0 F)
1920	-15.6 C (3.9 F)
1921	-12.8 C (9.0 F)
1922	-15.6 C (3.9 F)
1923	-13.3 C (8.1 F)
1924	-15.0 C (5.0 F)
1925	-15.6 C (3.9 F)
1926	-14.4 C (6.1 F)
1927	-14.4 C (6.1 F)
1928	-17.2 C (1.0 F)
1929	-14.4 C (6.1 F)
1930	-14.4 C (6.1 F)
1931	-10.6 C (12.9 F)
1932	-13.9 C (7.0 F)
1933	-16.7 C (1.9 F)
1934	-21.7 C (-7.1 F)
1935	-20.0 C (-4.0 F)
1936	-16.1 C (3.0 F)
1937	-10.0 C (14.0 F)
1938	-12.2 C (10.0 F)
1939	-12.2 C (10.0 F)
1940	-17.2 C (1.0 F)
1941	-10.6 C (12.9 F)
1942	-17.8 C (0.0 F)
1943	-15.6 C (3.9 F)
1944	-11.1 C (12.0 F)
1945	-16.1 C (3.0 F)
1946	-12.8 C (9.0 F)
1947	-16.7 C (1.9 F)
1948	-16.1 C (3.0 F)
1949	-9.4 C (15.1 F)
1950	-12.8 C (9.0 F)
1951	-15.0 C (5.0 F)
1952	-12.8 C (9.0 F)
1953	-8.3 C (17.1 F)
1954	-15.0 C (5.0 F)

Wettest day (Rx1day)

The wettest day of the year at Delaware Cy Reedy Poin, 1902 to 1954. The record is 140.0 mm (5.5 in) in 1928, marked on the chart; the median year is 55.9 mm (2.2 in).

Wettest day (Rx1day) at Delaware Cy Reedy Poin by year
Year	Wettest day (Rx1day)
1902	27.9 mm (1.1 in)
1903	44.5 mm (1.8 in)
1904	46.5 mm (1.8 in)
1905	42.7 mm (1.7 in)
1906	57.4 mm (2.3 in)
1907	76.2 mm (3.0 in)
1908	73.7 mm (2.9 in)
1909	31.8 mm (1.3 in)
1910	51.1 mm (2.0 in)
1911	70.6 mm (2.8 in)
1912	66.3 mm (2.6 in)
1913	50.3 mm (2.0 in)
1914	58.7 mm (2.3 in)
1915	53.6 mm (2.1 in)
1916	44.5 mm (1.8 in)
1917	114.8 mm (4.5 in)
1918	51.3 mm (2.0 in)
1919	83.6 mm (3.3 in)
1920	54.4 mm (2.1 in)
1921	78.5 mm (3.1 in)
1922	29.7 mm (1.2 in)
1923	98.6 mm (3.9 in)
1924	57.7 mm (2.3 in)
1925	41.7 mm (1.6 in)
1926	48.5 mm (1.9 in)
1927	77.5 mm (3.1 in)
1928	140.0 mm (5.5 in)
1929	44.5 mm (1.8 in)
1930	45.7 mm (1.8 in)
1931	55.9 mm (2.2 in)
1932	53.3 mm (2.1 in)
1933	94.0 mm (3.7 in)
1934	64.8 mm (2.6 in)
1935	80.0 mm (3.1 in)
1936	66.0 mm (2.6 in)
1937	65.3 mm (2.6 in)
1938	93.0 mm (3.7 in)
1939	133.4 mm (5.3 in)
1940	56.1 mm (2.2 in)
1941	45.7 mm (1.8 in)
1942	93.5 mm (3.7 in)
1943	53.3 mm (2.1 in)
1944	59.2 mm (2.3 in)
1945	50.8 mm (2.0 in)
1946	53.3 mm (2.1 in)
1947	50.5 mm (2.0 in)
1948	50.0 mm (2.0 in)
1949	50.8 mm (2.0 in)
1950	76.2 mm (3.0 in)
1951	45.2 mm (1.8 in)
1952	81.3 mm (3.2 in)
1953	118.4 mm (4.7 in)
1954	22.9 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Delaware Cy Reedy Poin, 1902 to 1954. The record is 190.5 mm (7.5 in) in 1933, marked on the chart; the median year is 89.4 mm (3.5 in).

Wettest five days (Rx5day) at Delaware Cy Reedy Poin by year
Year	Wettest five days (Rx5day)
1902	41.1 mm (1.6 in)
1903	99.3 mm (3.9 in)
1904	68.8 mm (2.7 in)
1905	61.0 mm (2.4 in)
1906	148.9 mm (5.9 in)
1907	139.7 mm (5.5 in)
1908	95.3 mm (3.8 in)
1909	42.4 mm (1.7 in)
1910	66.2 mm (2.6 in)
1911	85.8 mm (3.4 in)
1912	84.6 mm (3.3 in)
1913	86.1 mm (3.4 in)
1914	72.6 mm (2.9 in)
1915	71.5 mm (2.8 in)
1916	91.7 mm (3.6 in)
1917	114.8 mm (4.5 in)
1918	68.1 mm (2.7 in)
1919	162.8 mm (6.4 in)
1920	70.1 mm (2.8 in)
1921	86.4 mm (3.4 in)
1922	67.4 mm (2.7 in)
1923	98.6 mm (3.9 in)
1924	89.4 mm (3.5 in)
1925	48.8 mm (1.9 in)
1926	97.7 mm (3.8 in)
1927	95.5 mm (3.8 in)
1928	158.0 mm (6.2 in)
1929	83.9 mm (3.3 in)
1930	52.5 mm (2.1 in)
1931	118.1 mm (4.6 in)
1932	99.1 mm (3.9 in)
1933	190.5 mm (7.5 in)
1934	97.1 mm (3.8 in)
1935	158.8 mm (6.3 in)
1936	90.4 mm (3.6 in)
1937	68.6 mm (2.7 in)
1938	146.3 mm (5.8 in)
1939	135.2 mm (5.3 in)
1940	75.0 mm (3.0 in)
1941	89.1 mm (3.5 in)
1942	127.3 mm (5.0 in)
1943	94.4 mm (3.7 in)
1944	149.1 mm (5.9 in)
1945	86.9 mm (3.4 in)
1946	91.4 mm (3.6 in)
1947	65.4 mm (2.6 in)
1948	81.6 mm (3.2 in)
1949	82.5 mm (3.2 in)
1950	95.3 mm (3.8 in)
1951	81.2 mm (3.2 in)
1952	110.3 mm (4.3 in)
1953	136.4 mm (5.4 in)
1954	34.8 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Delaware Cy Reedy Poin, 1902 to 1954. The record is 42 days in 1924, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Delaware Cy Reedy Poin by year
Year	Longest dry spell (CDD)
1902	24 days
1903	18 days
1904	27 days
1905	29 days
1906	16 days
1907	19 days
1908	27 days
1909	24 days
1910	35 days
1911	23 days
1912	22 days
1913	21 days
1914	30 days
1915	25 days
1916	19 days
1917	27 days
1918	28 days
1919	18 days
1920	26 days
1921	22 days
1922	19 days
1923	18 days
1924	42 days
1925	16 days
1926	15 days
1927	14 days
1928	12 days
1929	16 days
1930	24 days
1931	20 days
1932	14 days
1933	12 days
1934	19 days
1935	21 days
1936	10 days
1937	13 days
1938	16 days
1939	18 days
1940	14 days
1941	28 days
1942	18 days
1943	18 days
1944	18 days
1945	13 days
1946	19 days
1947	20 days
1948	12 days
1949	21 days
1950	16 days
1951	13 days
1952	22 days
1953	19 days
1954	25 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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Delaware Cy Reedy Poin falls on 12 April and the median first autumn frost on 31 October, which leaves a median of 202 days between them.

Fitted over all years, the growing season changes by -5.6 days per decade at this station.

Frost dates and growing season at Delaware Cy Reedy Poin
Measure	Median, all years	Earliest period	Recent period (1912 to 1953)	Recent against earliest	Fitted trend
Last spring frost	12 April	n/a	14 April	n/a	+3.4 days per decade
First autumn frost	31 October	n/a	1 November	n/a	-2.2 days per decade
Growing days	202 days	n/a	202 days	n/a	-5.6 days per decade

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.

Rainfall Return Levels

42 years, 1903 to 1953

A day with at least 56.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 176.9 mm (7.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Delaware Cy Reedy Poin: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	56.7 mm (2.2 in)
5 years	77.6 mm (3.1 in)
10 years	95.0 mm (3.7 in)
25 years	122.4 mm (4.8 in)
50 years	147.3 mm (5.8 in)	Longer than the 42 years of record
100 years	176.9 mm (7.0 in)	Longer than the 42 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 42 years of values from 1903 to 1953.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 140.0 mm (5.5 in) in 1928; 133.4 mm (5.3 in) in 1939; 118.4 mm (4.7 in) in 1953.

Download the Data

Data for Delaware Cy Reedy Poin standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Delaware Cy Reedy Poin 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 2026-10-17 (17 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).