Quincy Weather Records (USC00117067)

Record envelope, standing records and threshold days for Quincy (USC00117067), Illinois, United States, with 77 years of record.

Key Facts for Quincy

Quincy (USC00117067) is a weather station in Illinois, United States at 39.95 latitude and -91.40 longitude, 183 m (600 ft) above sea level.
The station reports from 1901 to 1977, 77 years of record.
1,464 records set at Quincy still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Quincy set a daily record precipitation of 37.6 mm (1.5 in) on 28 March 1977.

About the Station

Location: Illinois, United States, 39.95 latitude, -91.40 longitude.
Elevation: 183 m (600 ft).
Period of record: 1901 to 1977, 77 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

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 Quincy. 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 Quincy, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.3 C (73.9 F)	-28.9 C (-20.0 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-33.9 C (-29.0 F)	n/a	n/a
Mar	31.1 C (88.0 F)	-21.7 C (-7.1 F)	n/a	n/a
Apr	33.3 C (91.9 F)	-9.4 C (15.1 F)	n/a	n/a
May	39.4 C (102.9 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	40.6 C (105.1 F)	3.9 C (39.0 F)	n/a	n/a
Jul	45.6 C (114.1 F)	8.9 C (48.0 F)	n/a	n/a
Aug	43.9 C (111.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	40.6 C (105.1 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	35.6 C (96.1 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	28.9 C (84.0 F)	-19.4 C (-2.9 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-28.9 C (-20.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Quincy still stand. 1936 holds the most, with 76.

Standing records at Quincy by the year they were set
Year set	Standing records
1901	22
1902	30
1903	25
1904	22
1905	25
1906	23
1907	32
1908	9
1909	26
1910	23
1911	29
1912	25
1913	42
1914	18
1915	19
1916	17
1917	23
1918	24
1919	5
1920	15
1921	19
1922	15
1923	9
1924	23
1925	27
1926	6
1927	19
1928	21
1929	14
1930	25
1931	22
1932	13
1933	16
1934	49
1935	10
1936	76
1937	14
1938	16
1939	20
1940	23
1941	11
1942	14
1943	16
1944	16
1945	20
1946	25
1947	12
1948	11
1949	12
1950	24
1951	23
1952	25
1953	16
1954	20
1955	17
1956	21
1957	7
1958	13
1959	12
1960	21
1961	5
1962	15
1963	33
1964	11
1965	18
1966	14
1967	15
1968	9
1969	4
1970	13
1971	16
1972	16
1973	9
1974	16
1975	15
1976	20
1977	8

All-Time Record Progression

6 new records

6 all-time records were set at Quincy between 19 July 1934 and 20 July 1949. Each dot is a new record.

When Quincy set new all-time records
Date	Kind	Detail
1934-07-19	Record high minimum temperature	Record high minimum temperature 29.4 C (84.9 F)
1934-07-21	Record high minimum temperature	Record high minimum temperature 30.6 C (87.1 F)
1934-07-23	Record high maximum temperature	Record high maximum temperature 44.4 C (111.9 F)
1936-07-15	Record high maximum temperature	Record high maximum temperature 45.6 C (114.1 F)
1943-08-08	Record daily precipitation	Record daily precipitation 127.0 mm (5.0 in)
1949-07-20	Record daily precipitation	Record daily precipitation 129.3 mm (5.1 in)

Wettest Day of Each Month

Jul: 129.3 mm (5.1 in)

The wettest day on record for each calendar month at Quincy. The most was 129.3 mm (5.1 in) on 20 July 1949.

Record daily precipitation for each month at Quincy
Month	Record daily precipitation (mm)	Date
Jan	79.2 mm (3.1 in)	1 January 1965
Feb	68.3 mm (2.7 in)	26 February 1936
Mar	57.2 mm (2.3 in)	29 March 1914
Apr	107.2 mm (4.2 in)	21 April 1973
May	106.2 mm (4.2 in)	28 May 1955
Jun	125.2 mm (4.9 in)	25 June 1913
Jul	129.3 mm (5.1 in)	20 July 1949
Aug	127.0 mm (5.0 in)	8 August 1943
Sep	110.5 mm (4.4 in)	24 September 1904
Oct	94.7 mm (3.7 in)	5 October 1955
Nov	72.1 mm (2.8 in)	12 November 1922
Dec	65.5 mm (2.6 in)	21 December 1949

Period of Record Coverage

1901 to 1977

77 years of record at Quincy, 1901 to 1977. 1 years have data for under 90 percent of days and are left out of rankings: 1977.

Days with data per year at Quincy
Year	Days with data	Share of year	Complete
1901	365	100%	Yes
1902	364	100%	Yes
1903	365	100%	Yes
1904	366	100%	Yes
1905	346	95%	Yes
1906	361	99%	Yes
1907	344	94%	Yes
1908	352	96%	Yes
1909	359	98%	Yes
1910	364	100%	Yes
1911	363	99%	Yes
1912	365	100%	Yes
1913	364	100%	Yes
1914	364	100%	Yes
1915	362	99%	Yes
1916	365	100%	Yes
1917	361	99%	Yes
1918	365	100%	Yes
1919	364	100%	Yes
1920	365	100%	Yes
1921	365	100%	Yes
1922	363	99%	Yes
1923	365	100%	Yes
1924	363	99%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	365	100%	Yes
1929	363	99%	Yes
1930	365	100%	Yes
1931	364	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	364	99%	Yes
1945	364	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	363	99%	Yes
1950	365	100%	Yes
1951	362	99%	Yes
1952	366	100%	Yes
1953	363	99%	Yes
1954	365	100%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	363	99%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	90	25%	No

Latest Records

Latest records at Quincy
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 March 1977	Quincy, US	daily rain	37.6 mm (1.5 in)	9.7 mm (0.38 in)	70 years	37 of 100 (Notable)
27 February 1977	Quincy, US	daily snowfall	3.8 cm (1.5 in)	1.5 cm (0.6 in)	40 years	20 of 100 (Routine)
23 February 1977	Quincy, US	daily high min	9.4 C (48.9 F)	5.5 C (9.9 F)	16 years	19 of 100 (Routine)
22 February 1977	Quincy, US	daily high max (Tie)	21.1 C (70.0 F)	tie	55 years	5 of 100 (Routine)
28 January 1977	Quincy, US	daily low min (Tie)	-26.1 C (-15.0 F)	tie	62 years	6 of 100 (Routine)
17 January 1977	Quincy, US	daily low min	-26.7 C (-16.1 F)	5.6 C (10.1 F)	53 years	29 of 100 (Routine)
17 January 1977	Quincy, US	daily low max	-15.6 C (3.9 F)	0.6 C (1.1 F)	47 years	21 of 100 (Routine)
16 January 1977	Quincy, US	daily low max	-20.0 C (-4.0 F)	5.0 C (9.0 F)	65 years	32 of 100 (Routine)
16 January 1977	Quincy, US	monthly low min (Tie)	-28.9 C (-20.0 F)	tie	65 years	9 of 100 (Routine)
13 January 1977	Quincy, US	daily snow depth (Tie)	17.8 cm (7.0 in)	tie	50 years	5 of 100 (Routine)
11 January 1977	Quincy, US	daily low min	-25.6 C (-14.1 F)	3.9 C (7.0 F)	15 years	16 of 100 (Routine)
9 January 1977	Quincy, US	daily low min	-22.2 C (-8.0 F)	0.5 C (0.9 F)	32 years	16 of 100 (Routine)
9 January 1977	Quincy, US	daily low max	-15.6 C (3.9 F)	2.8 C (5.0 F)	15 years	14 of 100 (Routine)
4 January 1977	Quincy, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	70 years	52 of 100 (Notable)
31 December 1976	Quincy, US	daily low max	-12.2 C (10.0 F)	0.5 C (0.9 F)	3 years	7 of 100 (Routine)
31 December 1976	Quincy, US	daily low min (Tie)	-23.3 C (-9.9 F)	tie	8 years	2 of 100 (Routine)
7 December 1976	Quincy, US	daily low min	-21.7 C (-7.1 F)	3.4 C (6.1 F)	26 years	19 of 100 (Routine)
7 December 1976	Quincy, US	daily low max	-11.1 C (12.0 F)	1.7 C (3.1 F)	26 years	16 of 100 (Routine)
29 November 1976	Quincy, US	daily low min	-17.2 C (1.0 F)	1.1 C (2.0 F)	65 years	27 of 100 (Routine)
28 November 1976	Quincy, US	daily low min	-15.0 C (5.0 F)	2.2 C (4.0 F)	21 years	16 of 100 (Routine)

Climate Trend

75 complete years, 1901 to 1976

One stripe for each of 75 complete years at Quincy, 1901 to 1976. Blue stripes are years cooler than the station's own mean of 12.4 C (54.3 F); red stripes are warmer. The coolest year was 1904, at 9.8 C (49.6 F), and the warmest was 1921, at 15.0 C (59.1 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Quincy as warming stripes, 1901 to 1976
Year	Annual mean temperature	Difference from the station mean
1901	11.5 C	-0.85 C
1902	11.1 C	-1.34 C
1903	10.5 C	-1.87 C
1904	9.8 C	-2.62 C
1905	10.8 C	-1.60 C
1906	11.2 C	-1.24 C
1908	12.0 C	-0.35 C
1909	11.2 C	-1.21 C
1910	11.4 C	-0.97 C
1911	12.3 C	-0.05 C
1912	11.1 C	-1.33 C
1913	12.9 C	+0.52 C
1914	12.6 C	+0.24 C
1915	12.0 C	-0.41 C
1916	11.9 C	-0.48 C
1917	10.2 C	-2.21 C
1918	12.5 C	+0.12 C
1919	13.4 C	+1.04 C
1920	12.8 C	+0.42 C
1921	15.0 C	+2.64 C
1922	13.9 C	+1.54 C
1923	13.3 C	+0.86 C
1924	12.0 C	-0.38 C
1925	13.0 C	+0.58 C
1926	12.5 C	+0.06 C
1927	13.1 C	+0.74 C
1928	13.2 C	+0.76 C
1929	12.1 C	-0.26 C
1930	13.7 C	+1.28 C
1931	14.7 C	+2.26 C
1932	12.9 C	+0.53 C
1933	14.0 C	+1.60 C
1934	14.3 C	+1.90 C
1935	12.5 C	+0.14 C
1936	13.3 C	+0.87 C
1937	12.2 C	-0.17 C
1938	13.8 C	+1.44 C
1939	13.0 C	+0.62 C
1940	11.4 C	-0.95 C
1941	13.3 C	+0.90 C
1942	12.2 C	-0.16 C
1943	12.0 C	-0.44 C
1944	12.7 C	+0.31 C
1945	11.9 C	-0.47 C
1946	13.8 C	+1.40 C
1947	12.4 C	+0.05 C
1948	12.5 C	+0.10 C
1949	12.8 C	+0.45 C
1950	11.3 C	-1.07 C
1951	11.3 C	-1.12 C
1952	12.9 C	+0.47 C
1953	13.5 C	+1.15 C
1954	13.5 C	+1.11 C
1955	12.7 C	+0.30 C
1956	12.8 C	+0.45 C
1957	12.5 C	+0.12 C
1958	11.3 C	-1.10 C
1959	12.0 C	-0.35 C
1960	11.4 C	-1.03 C
1961	11.4 C	-0.95 C
1962	12.2 C	-0.18 C
1963	12.5 C	+0.07 C
1964	13.2 C	+0.81 C
1965	12.8 C	+0.36 C
1966	12.0 C	-0.44 C
1967	11.7 C	-0.71 C
1968	11.9 C	-0.45 C
1969	11.5 C	-0.86 C
1970	12.2 C	-0.15 C
1971	12.7 C	+0.33 C
1972	11.5 C	-0.87 C
1973	13.0 C	+0.59 C
1974	12.4 C	0.00 C
1975	12.7 C	+0.29 C
1976	11.7 C	-0.74 C

The fitted trend in annual mean temperature here over 1901 to 1976 is 0.06 C (-0.04 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Quincy
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.06 C (-0.04 to 0.17) per decade	0.1 F (-0.1 to 0.3) per decade	1901 to 1976	75	Not clearly different from zero
Mean daily maximum	-0.01 C (-0.12 to 0.10) per decade	-0.02 F (-0.22 to 0.18) per decade	1901 to 1976	75	Not clearly different from zero
Mean daily minimum	0.13 C (0.02 to 0.24) per decade	0.23 F (0.03 to 0.43) per decade	1901 to 1976	75	Rise

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

1901 to 1977

Yearly extremes at Quincy: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1936	37.8 C (100.0 F)	77
Coldest night (TNn)	-33.9 C (-29.0 F)	1905	-22.2 C (-8.0 F)	77
Wettest day (Rx1day)	129.3 mm (5.1 in)	1949	68.1 mm (2.7 in)	77
Wettest five days (Rx5day)	231.9 mm (9.1 in)	1970	102.3 mm (4.0 in)	77
Longest dry spell (CDD)	50 days	1914	23 days	77

Hottest day (TXx)

The hottest day of the year at Quincy, 1901 to 1977. The record is 45.6 C (114.1 F) in 1936, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Quincy by year
Year	Hottest day (TXx)
1901	43.9 C (111.0 F)
1902	36.1 C (97.0 F)
1903	35.6 C (96.1 F)
1904	33.9 C (93.0 F)
1905	36.7 C (98.1 F)
1906	36.7 C (98.1 F)
1907	35.0 C (95.0 F)
1908	35.0 C (95.0 F)
1909	35.6 C (96.1 F)
1910	36.1 C (97.0 F)
1911	40.0 C (104.0 F)
1912	37.8 C (100.0 F)
1913	40.6 C (105.1 F)
1914	40.6 C (105.1 F)
1915	34.4 C (93.9 F)
1916	40.6 C (105.1 F)
1917	38.3 C (100.9 F)
1918	42.2 C (108.0 F)
1919	38.9 C (102.0 F)
1920	36.7 C (98.1 F)
1921	38.3 C (100.9 F)
1922	39.4 C (102.9 F)
1923	38.3 C (100.9 F)
1924	37.2 C (99.0 F)
1925	40.0 C (104.0 F)
1926	37.8 C (100.0 F)
1927	37.8 C (100.0 F)
1928	36.7 C (98.1 F)
1929	36.7 C (98.1 F)
1930	41.1 C (106.0 F)
1931	41.1 C (106.0 F)
1932	37.8 C (100.0 F)
1933	37.8 C (100.0 F)
1934	44.4 C (111.9 F)
1935	37.2 C (99.0 F)
1936	45.6 C (114.1 F)
1937	39.4 C (102.9 F)
1938	37.8 C (100.0 F)
1939	37.8 C (100.0 F)
1940	40.0 C (104.0 F)
1941	39.4 C (102.9 F)
1942	36.1 C (97.0 F)
1943	40.0 C (104.0 F)
1944	38.9 C (102.0 F)
1945	39.4 C (102.9 F)
1946	40.0 C (104.0 F)
1947	41.1 C (106.0 F)
1948	37.8 C (100.0 F)
1949	37.8 C (100.0 F)
1950	36.7 C (98.1 F)
1951	38.3 C (100.9 F)
1952	40.6 C (105.1 F)
1953	40.0 C (104.0 F)
1954	43.9 C (111.0 F)
1955	40.0 C (104.0 F)
1956	42.2 C (108.0 F)
1957	40.0 C (104.0 F)
1958	36.7 C (98.1 F)
1959	37.2 C (99.0 F)
1960	37.8 C (100.0 F)
1961	36.1 C (97.0 F)
1962	37.2 C (99.0 F)
1963	39.4 C (102.9 F)
1964	40.0 C (104.0 F)
1965	37.2 C (99.0 F)
1966	40.6 C (105.1 F)
1967	36.1 C (97.0 F)
1968	36.1 C (97.0 F)
1969	36.7 C (98.1 F)
1970	38.9 C (102.0 F)
1971	37.2 C (99.0 F)
1972	36.1 C (97.0 F)
1973	35.0 C (95.0 F)
1974	37.8 C (100.0 F)
1975	37.8 C (100.0 F)
1976	38.3 C (100.9 F)
1977	26.7 C (80.1 F)

Coldest night (TNn)

The coldest night of the year at Quincy, 1901 to 1977. The record is -33.9 C (-29.0 F) in 1905, marked on the chart; the median year is -22.2 C (-8.0 F).

Coldest night (TNn) at Quincy by year
Year	Coldest night (TNn)
1901	-28.3 C (-18.9 F)
1902	-23.9 C (-11.0 F)
1903	-27.8 C (-18.0 F)
1904	-26.7 C (-16.1 F)
1905	-33.9 C (-29.0 F)
1906	-18.9 C (-2.0 F)
1907	-22.8 C (-9.0 F)
1908	-18.9 C (-2.0 F)
1909	-22.8 C (-9.0 F)
1910	-20.6 C (-5.1 F)
1911	-21.7 C (-7.1 F)
1912	-28.9 C (-20.0 F)
1913	-18.3 C (-0.9 F)
1914	-23.3 C (-9.9 F)
1915	-26.1 C (-15.0 F)
1916	-24.4 C (-11.9 F)
1917	-26.1 C (-15.0 F)
1918	-28.9 C (-20.0 F)
1919	-24.4 C (-11.9 F)
1920	-18.3 C (-0.9 F)
1921	-16.1 C (3.0 F)
1922	-18.9 C (-2.0 F)
1923	-19.4 C (-2.9 F)
1924	-28.9 C (-20.0 F)
1925	-20.6 C (-5.1 F)
1926	-21.1 C (-6.0 F)
1927	-25.0 C (-13.0 F)
1928	-22.2 C (-8.0 F)
1929	-21.1 C (-6.0 F)
1930	-26.7 C (-16.1 F)
1931	-14.4 C (6.1 F)
1932	-24.4 C (-11.9 F)
1933	-24.4 C (-11.9 F)
1934	-22.2 C (-8.0 F)
1935	-21.7 C (-7.1 F)
1936	-26.7 C (-16.1 F)
1937	-20.6 C (-5.1 F)
1938	-18.3 C (-0.9 F)
1939	-18.3 C (-0.9 F)
1940	-26.7 C (-16.1 F)
1941	-16.7 C (1.9 F)
1942	-23.3 C (-9.9 F)
1943	-23.3 C (-9.9 F)
1944	-24.4 C (-11.9 F)
1945	-21.7 C (-7.1 F)
1946	-18.3 C (-0.9 F)
1947	-22.8 C (-9.0 F)
1948	-21.1 C (-6.0 F)
1949	-20.0 C (-4.0 F)
1950	-19.4 C (-2.9 F)
1951	-23.3 C (-9.9 F)
1952	-19.4 C (-2.9 F)
1953	-19.4 C (-2.9 F)
1954	-18.9 C (-2.0 F)
1955	-22.2 C (-8.0 F)
1956	-18.3 C (-0.9 F)
1957	-23.3 C (-9.9 F)
1958	-23.3 C (-9.9 F)
1959	-22.2 C (-8.0 F)
1960	-21.7 C (-7.1 F)
1961	-22.2 C (-8.0 F)
1962	-23.3 C (-9.9 F)
1963	-25.0 C (-13.0 F)
1964	-19.4 C (-2.9 F)
1965	-23.3 C (-9.9 F)
1966	-25.0 C (-13.0 F)
1967	-21.7 C (-7.1 F)
1968	-24.4 C (-11.9 F)
1969	-20.6 C (-5.1 F)
1970	-26.1 C (-15.0 F)
1971	-20.6 C (-5.1 F)
1972	-25.6 C (-14.1 F)
1973	-18.9 C (-2.0 F)
1974	-24.4 C (-11.9 F)
1975	-21.1 C (-6.0 F)
1976	-23.3 C (-9.9 F)
1977	-28.9 C (-20.0 F)

Wettest day (Rx1day)

The wettest day of the year at Quincy, 1901 to 1977. The record is 129.3 mm (5.1 in) in 1949, marked on the chart; the median year is 68.1 mm (2.7 in).

Wettest day (Rx1day) at Quincy by year
Year	Wettest day (Rx1day)
1901	72.9 mm (2.9 in)
1902	76.5 mm (3.0 in)
1903	55.1 mm (2.2 in)
1904	110.5 mm (4.4 in)
1905	73.2 mm (2.9 in)
1906	49.3 mm (1.9 in)
1907	68.1 mm (2.7 in)
1908	81.0 mm (3.2 in)
1909	81.3 mm (3.2 in)
1910	80.5 mm (3.2 in)
1911	57.2 mm (2.3 in)
1912	54.6 mm (2.1 in)
1913	125.2 mm (4.9 in)
1914	57.2 mm (2.3 in)
1915	71.9 mm (2.8 in)
1916	53.3 mm (2.1 in)
1917	107.7 mm (4.2 in)
1918	44.5 mm (1.8 in)
1919	58.2 mm (2.3 in)
1920	78.5 mm (3.1 in)
1921	39.6 mm (1.6 in)
1922	72.1 mm (2.8 in)
1923	56.9 mm (2.2 in)
1924	47.5 mm (1.9 in)
1925	78.0 mm (3.1 in)
1926	84.1 mm (3.3 in)
1927	42.2 mm (1.7 in)
1928	62.7 mm (2.5 in)
1929	65.3 mm (2.6 in)
1930	65.8 mm (2.6 in)
1931	86.6 mm (3.4 in)
1932	79.8 mm (3.1 in)
1933	53.8 mm (2.1 in)
1934	46.2 mm (1.8 in)
1935	61.7 mm (2.4 in)
1936	70.6 mm (2.8 in)
1937	98.0 mm (3.9 in)
1938	74.4 mm (2.9 in)
1939	91.2 mm (3.6 in)
1940	71.4 mm (2.8 in)
1941	51.8 mm (2.0 in)
1942	59.7 mm (2.4 in)
1943	127.0 mm (5.0 in)
1944	102.4 mm (4.0 in)
1945	53.3 mm (2.1 in)
1946	88.1 mm (3.5 in)
1947	101.1 mm (4.0 in)
1948	56.4 mm (2.2 in)
1949	129.3 mm (5.1 in)
1950	55.9 mm (2.2 in)
1951	105.4 mm (4.1 in)
1952	47.5 mm (1.9 in)
1953	36.1 mm (1.4 in)
1954	52.8 mm (2.1 in)
1955	106.2 mm (4.2 in)
1956	56.6 mm (2.2 in)
1957	106.7 mm (4.2 in)
1958	89.7 mm (3.5 in)
1959	29.2 mm (1.1 in)
1960	68.8 mm (2.7 in)
1961	109.0 mm (4.3 in)
1962	53.1 mm (2.1 in)
1963	59.7 mm (2.4 in)
1964	64.8 mm (2.6 in)
1965	95.0 mm (3.7 in)
1966	75.9 mm (3.0 in)
1967	47.8 mm (1.9 in)
1968	116.3 mm (4.6 in)
1969	88.9 mm (3.5 in)
1970	103.6 mm (4.1 in)
1971	38.6 mm (1.5 in)
1972	51.6 mm (2.0 in)
1973	107.2 mm (4.2 in)
1974	53.3 mm (2.1 in)
1975	49.8 mm (2.0 in)
1976	62.7 mm (2.5 in)
1977	37.6 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Quincy, 1901 to 1977. The record is 231.9 mm (9.1 in) in 1970, marked on the chart; the median year is 102.3 mm (4.0 in).

Wettest five days (Rx5day) at Quincy by year
Year	Wettest five days (Rx5day)
1901	115.4 mm (4.5 in)
1902	125.8 mm (5.0 in)
1903	77.5 mm (3.1 in)
1904	157.0 mm (6.2 in)
1905	77.9 mm (3.1 in)
1906	106.7 mm (4.2 in)
1907	122.2 mm (4.8 in)
1908	115.0 mm (4.5 in)
1909	118.1 mm (4.6 in)
1910	80.5 mm (3.2 in)
1911	141.5 mm (5.6 in)
1912	57.6 mm (2.3 in)
1913	134.1 mm (5.3 in)
1914	96.5 mm (3.8 in)
1915	116.4 mm (4.6 in)
1916	116.3 mm (4.6 in)
1917	143.8 mm (5.7 in)
1918	108.3 mm (4.3 in)
1919	90.4 mm (3.6 in)
1920	88.7 mm (3.5 in)
1921	63.3 mm (2.5 in)
1922	105.9 mm (4.2 in)
1923	130.6 mm (5.1 in)
1924	72.4 mm (2.9 in)
1925	90.7 mm (3.6 in)
1926	132.6 mm (5.2 in)
1927	80.5 mm (3.2 in)
1928	97.8 mm (3.9 in)
1929	88.4 mm (3.5 in)
1930	66.6 mm (2.6 in)
1931	124.0 mm (4.9 in)
1932	90.9 mm (3.6 in)
1933	62.1 mm (2.4 in)
1934	66.8 mm (2.6 in)
1935	102.7 mm (4.0 in)
1936	87.7 mm (3.5 in)
1937	112.0 mm (4.4 in)
1938	124.3 mm (4.9 in)
1939	183.2 mm (7.2 in)
1940	81.3 mm (3.2 in)
1941	142.9 mm (5.6 in)
1942	90.2 mm (3.6 in)
1943	133.4 mm (5.3 in)
1944	117.4 mm (4.6 in)
1945	109.0 mm (4.3 in)
1946	101.9 mm (4.0 in)
1947	117.9 mm (4.6 in)
1948	100.4 mm (4.0 in)
1949	162.6 mm (6.4 in)
1950	75.8 mm (3.0 in)
1951	111.7 mm (4.4 in)
1952	47.5 mm (1.9 in)
1953	43.2 mm (1.7 in)
1954	82.5 mm (3.2 in)
1955	136.9 mm (5.4 in)
1956	77.4 mm (3.0 in)
1957	145.5 mm (5.7 in)
1958	134.1 mm (5.3 in)
1959	78.8 mm (3.1 in)
1960	102.3 mm (4.0 in)
1961	187.0 mm (7.4 in)
1962	74.6 mm (2.9 in)
1963	104.8 mm (4.1 in)
1964	84.3 mm (3.3 in)
1965	125.2 mm (4.9 in)
1966	78.3 mm (3.1 in)
1967	87.9 mm (3.5 in)
1968	124.2 mm (4.9 in)
1969	191.8 mm (7.6 in)
1970	231.9 mm (9.1 in)
1971	44.5 mm (1.8 in)
1972	76.7 mm (3.0 in)
1973	126.3 mm (5.0 in)
1974	82.1 mm (3.2 in)
1975	78.7 mm (3.1 in)
1976	76.9 mm (3.0 in)
1977	43.4 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Quincy, 1901 to 1977. The record is 50 days in 1914, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Quincy by year
Year	Longest dry spell (CDD)
1901	23 days
1902	26 days
1903	34 days
1904	32 days
1905	37 days
1906	25 days
1907	28 days
1908	24 days
1909	16 days
1910	31 days
1911	25 days
1912	27 days
1913	23 days
1914	50 days
1915	23 days
1916	44 days
1917	26 days
1918	22 days
1919	42 days
1920	19 days
1921	15 days
1922	19 days
1923	18 days
1924	20 days
1925	23 days
1926	14 days
1927	20 days
1928	19 days
1929	13 days
1930	30 days
1931	18 days
1932	17 days
1933	25 days
1934	36 days
1935	17 days
1936	26 days
1937	18 days
1938	23 days
1939	37 days
1940	23 days
1941	19 days
1942	29 days
1943	28 days
1944	28 days
1945	27 days
1946	32 days
1947	28 days
1948	29 days
1949	21 days
1950	29 days
1951	28 days
1952	26 days
1953	22 days
1954	19 days
1955	30 days
1956	39 days
1957	22 days
1958	32 days
1959	12 days
1960	28 days
1961	15 days
1962	14 days
1963	34 days
1964	29 days
1965	21 days
1966	20 days
1967	26 days
1968	18 days
1969	18 days
1970	17 days
1971	26 days
1972	17 days
1973	20 days
1974	15 days
1975	14 days
1976	41 days
1977	16 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

75 years with a frost

Across 75 years with a frost, the median last spring frost at Quincy falls on 13 April and the median first autumn frost on 23 October, which leaves a median of 191 days between them.

In 1947 to 1976 the median growing season was 194 days. That is 6 days more than in 1901 to 1931.

Fitted over all years, the growing season changes by +2.5 days per decade at this station.

Frost dates and growing season at Quincy
Measure	Median, all years	Earliest period (1901 to 1931)	Recent period (1947 to 1976)	Recent against earliest	Fitted trend
Last spring frost	13 April	15 April	12 April	3 days earlier	-0.9 days per decade
First autumn frost	23 October	19 October	26 October	7 days later	+1.6 days per decade
Growing days	191 days	188 days	194 days	6 days more	+2.5 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

76 years, 1901 to 1976

A day with at least 68.8 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 147.1 mm (5.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Quincy: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	68.8 mm (2.7 in)
5 years	90.7 mm (3.6 in)
10 years	104.8 mm (4.1 in)
25 years	122.2 mm (4.8 in)
50 years	134.9 mm (5.3 in)
100 years	147.1 mm (5.8 in)	Longer than the 76 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, 76 years of values from 1901 to 1976.

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: 129.3 mm (5.1 in) in 1949; 127.0 mm (5.0 in) in 1943; 125.2 mm (4.9 in) in 1913.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Quincy, at 1943 and 1953. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1943 ran 0.5 C (0.9 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1953 ran 0.2 C (0.4 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Quincy, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1943	+0.5	+0.9	possible	5
1953	-0.2	-0.4	possible	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

Data for Quincy standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Quincy 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).