Harrison 1 NNW Weather Records (USC00203616)

Record envelope, standing records and threshold days for Harrison 1 NNW (USC00203616), Michigan, United States, with 93 years of record.

Key Facts for Harrison 1 NNW

Harrison 1 NNW (USC00203616) is a weather station in Michigan, United States at 44.03 latitude and -84.80 longitude, 352 m (1,156 ft) above sea level.
The station reports from 1893 to 1985, 93 years of record.
1,464 records set at Harrison 1 NNW still stand.
Records are tracked for tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Harrison 1 NNW set a daily record precipitation of 39.4 mm (1.6 in) on 30 March 1985.

About the Station

Location: Michigan, United States, 44.03 latitude, -84.80 longitude.
Elevation: 352 m (1,156 ft).
Period of record: 1893 to 1985, 93 years.
Eligible elements: 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 Harrison 1 NNW. 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 Harrison 1 NNW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.8 C (55.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Feb	12.8 C (55.0 F)	-37.8 C (-36.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-21.1 C (-6.0 F)	n/a	n/a
May	33.9 C (93.0 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	38.3 C (100.9 F)	-6.1 C (21.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	0.6 C (33.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	-9.4 C (15.1 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-13.3 C (8.1 F)	n/a	n/a
Nov	21.7 C (71.1 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-26.7 C (-16.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Harrison 1 NNW still stand. 1894 holds the most, with 115.

Standing records at Harrison 1 NNW by the year they were set
Year set	Standing records
1893	63
1894	115
1895	30
1896	73
1897	45
1898	11
1899	68
1900	50
1901	39
1902	26
1903	58
1904	30
1905	20
1906	45
1907	45
1908	56
1909	60
1910	58
1911	43
1912	29
1913	55
1914	35
1915	30
1916	35
1917	27
1918	43
1919	6
1920	59
1921	48
1922	9
1923	45
1924	47
1925	61

All-Time Record Progression

1 new records

1 all-time records were set at Harrison 1 NNW between 8 July 1957 and 8 July 1957. Each dot is a new record.

Wettest Day of Each Month

Jul: 134.6 mm (5.3 in)

The wettest day on record for each calendar month at Harrison 1 NNW. The most was 134.6 mm (5.3 in) on 8 July 1957.

Record daily precipitation for each month at Harrison 1 NNW
Month	Record daily precipitation (mm)	Date
Jan	43.7 mm (1.7 in)	1 January 1985
Feb	30.5 mm (1.2 in)	24 February 1900
Mar	55.9 mm (2.2 in)	5 March 1976
Apr	42.7 mm (1.7 in)	19 April 1925
May	56.9 mm (2.2 in)	25 May 1955
Jun	68.3 mm (2.7 in)	14 June 1899
Jul	134.6 mm (5.3 in)	8 July 1957
Aug	72.4 mm (2.9 in)	1 August 1973
Sep	80.3 mm (3.2 in)	9 September 1941
Oct	57.2 mm (2.3 in)	10 October 1970
Nov	46.7 mm (1.8 in)	28 November 1966
Dec	66.0 mm (2.6 in)	11 December 1971

Period of Record Coverage

1893 to 1925

33 years of record at Harrison 1 NNW, 1893 to 1925. 20 years have data for under 90 percent of days and are left out of rankings: 1893, 1895, 1897, 1898, 1899, 1900, 1901, 1902 and others.

Days with data per year at Harrison 1 NNW
Year	Days with data	Share of year	Complete
1893	313	86%	No
1894	356	98%	Yes
1895	126	35%	No
1896	351	96%	Yes
1897	279	76%	No
1898	107	29%	No
1899	299	82%	No
1900	284	78%	No
1901	317	87%	No
1902	253	69%	No
1903	179	49%	No
1904	309	84%	No
1905	329	90%	Yes
1906	334	92%	Yes
1907	356	98%	Yes
1908	339	93%	Yes
1909	362	99%	Yes
1910	359	98%	Yes
1911	351	96%	Yes
1912	286	78%	No
1913	357	98%	Yes
1914	304	83%	No
1915	354	97%	Yes
1916	259	71%	No
1917	259	71%	No
1918	246	67%	No
1919	177	48%	No
1920	328	90%	No
1921	326	89%	No
1922	168	46%	No
1923	343	94%	Yes
1924	350	96%	Yes
1925	326	89%	No

Latest Records

Latest records at Harrison 1 NNW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 March 1985	Harrison 1 NNW, US	daily rain	39.4 mm (1.6 in)	26.4 mm (1.0 in)	6 years	49 of 100 (Notable)
25 March 1985	Harrison 1 NNW, US	daily snowfall	13.2 cm (5.2 in)	3.0 cm (1.2 in)	38 years	25 of 100 (Routine)
4 March 1985	Harrison 1 NNW, US	daily snowfall	19.1 cm (7.5 in)	3.9 cm (1.5 in)	62 years	34 of 100 (Routine)
19 February 1985	Harrison 1 NNW, US	daily snow depth	61.0 cm (24.0 in)	10.2 cm (4.0 in)	42 years	27 of 100 (Routine)
14 February 1985	Harrison 1 NNW, US	daily snow depth (Tie)	66.0 cm (26.0 in)	tie	42 years	5 of 100 (Routine)
12 February 1985	Harrison 1 NNW, US	daily rain	15.5 mm (0.6 in)	2.8 mm (0.11 in)	77 years	20 of 100 (Routine)
12 February 1985	Harrison 1 NNW, US	daily snowfall (Tie)	15.2 cm (6.0 in)	tie	62 years	6 of 100 (Routine)
1 January 1985	Harrison 1 NNW, US	monthly rain	43.7 mm (1.7 in)	7.9 mm (0.31 in)	37 years	44 of 100 (Notable)
1 January 1985	Harrison 1 NNW, US	daily snowfall	25.7 cm (10.1 in)	13.0 cm (5.1 in)	6 years	37 of 100 (Notable)
26 December 1984	Harrison 1 NNW, US	daily rain	21.8 mm (0.9 in)	6.6 mm (0.26 in)	74 years	20 of 100 (Routine)
29 October 1984	Harrison 1 NNW, US	daily rain	19.1 mm (0.8 in)	2.3 mm (0.09 in)	84 years	20 of 100 (Routine)
26 October 1984	Harrison 1 NNW, US	daily rain	23.6 mm (0.9 in)	2.0 mm (0.08 in)	82 years	20 of 100 (Routine)
8 October 1984	Harrison 1 NNW, US	daily rain	24.1 mm (0.9 in)	2.3 mm (0.09 in)	7 years	13 of 100 (Routine)
25 September 1984	Harrison 1 NNW, US	daily rain	26.9 mm (1.1 in)	2.8 mm (0.11 in)	43 years	23 of 100 (Routine)
13 May 1984	Harrison 1 NNW, US	daily rain	27.9 mm (1.1 in)	3.0 mm (0.12 in)	6 years	13 of 100 (Routine)
27 February 1984	Harrison 1 NNW, US	daily rain	21.1 mm (0.8 in)	5.9 mm (0.23 in)	36 years	20 of 100 (Routine)
27 January 1984	Harrison 1 NNW, US	daily snowfall	14.0 cm (5.5 in)	1.8 cm (0.7 in)	29 years	20 of 100 (Routine)
27 December 1983	Harrison 1 NNW, US	daily snow depth	27.9 cm (11.0 in)	2.5 cm (1.0 in)	14 years	14 of 100 (Routine)
26 December 1983	Harrison 1 NNW, US	daily snow depth (Tie)	25.4 cm (10.0 in)	tie	28 years	4 of 100 (Routine)
10 December 1983	Harrison 1 NNW, US	daily rain	17.0 mm (0.7 in)	6.8 mm (0.27 in)	87 years	20 of 100 (Routine)

Extremes by Year

1893 to 1985

Yearly extremes at Harrison 1 NNW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1916	35.6 C (96.1 F)	33
Coldest night (TNn)	-37.8 C (-36.0 F)	1899	-27.2 C (-17.0 F)	33
Wettest day (Rx1day)	134.6 mm (5.3 in)	1957	46.7 mm (1.8 in)	81
Wettest five days (Rx5day)	178.1 mm (7.0 in)	1957	68.8 mm (2.7 in)	81
Longest dry spell (CDD)	47 days	1904	20 days	81

Hottest day (TXx)

The hottest day of the year at Harrison 1 NNW, 1893 to 1985. The record is 39.4 C (102.9 F) in 1916, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Harrison 1 NNW by year
Year	Hottest day (TXx)
1893	34.4 C (93.9 F)
1894	36.1 C (97.0 F)
1895	14.4 C (57.9 F)
1896	33.9 C (93.0 F)
1897	37.2 C (99.0 F)
1898	29.4 C (84.9 F)
1899	36.1 C (97.0 F)
1900	36.1 C (97.0 F)
1901	36.1 C (97.0 F)
1902	31.1 C (88.0 F)
1903	30.6 C (87.1 F)
1904	36.1 C (97.0 F)
1905	33.3 C (91.9 F)
1906	33.9 C (93.0 F)
1907	35.6 C (96.1 F)
1908	36.7 C (98.1 F)
1909	35.6 C (96.1 F)
1910	38.3 C (100.9 F)
1911	37.8 C (100.0 F)
1912	33.9 C (93.0 F)
1913	35.6 C (96.1 F)
1914	33.9 C (93.0 F)
1915	31.1 C (88.0 F)
1916	39.4 C (102.9 F)
1917	36.1 C (97.0 F)
1918	36.7 C (98.1 F)
1919	33.9 C (93.0 F)
1920	33.3 C (91.9 F)
1921	37.8 C (100.0 F)
1922	35.0 C (95.0 F)
1923	36.7 C (98.1 F)
1924	31.7 C (89.1 F)
1925	34.4 C (93.9 F)
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a

Coldest night (TNn)

The coldest night of the year at Harrison 1 NNW, 1893 to 1985. The record is -37.8 C (-36.0 F) in 1899, marked on the chart; the median year is -27.2 C (-17.0 F).

Coldest night (TNn) at Harrison 1 NNW by year
Year	Coldest night (TNn)
1893	-27.8 C (-18.0 F)
1894	-30.0 C (-22.0 F)
1895	-30.6 C (-23.1 F)
1896	-30.0 C (-22.0 F)
1897	-24.4 C (-11.9 F)
1898	-23.9 C (-11.0 F)
1899	-37.8 C (-36.0 F)
1900	-24.4 C (-11.9 F)
1901	-22.2 C (-8.0 F)
1902	-25.6 C (-14.1 F)
1903	-28.3 C (-18.9 F)
1904	-27.8 C (-18.0 F)
1905	-26.1 C (-15.0 F)
1906	-30.0 C (-22.0 F)
1907	-27.2 C (-17.0 F)
1908	-26.7 C (-16.1 F)
1909	-25.0 C (-13.0 F)
1910	-28.9 C (-20.0 F)
1911	-17.8 C (0.0 F)
1912	-16.7 C (1.9 F)
1913	-28.9 C (-20.0 F)
1914	-26.7 C (-16.1 F)
1915	-26.1 C (-15.0 F)
1916	-21.7 C (-7.1 F)
1917	-35.0 C (-31.0 F)
1918	-34.4 C (-29.9 F)
1919	-23.3 C (-9.9 F)
1920	-33.3 C (-27.9 F)
1921	-23.3 C (-9.9 F)
1922	-27.8 C (-18.0 F)
1923	-23.9 C (-11.0 F)
1924	-27.2 C (-17.0 F)
1925	-27.8 C (-18.0 F)
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a

Wettest day (Rx1day)

The wettest day of the year at Harrison 1 NNW, 1893 to 1985. The record is 134.6 mm (5.3 in) in 1957, marked on the chart; the median year is 46.7 mm (1.8 in).

Wettest day (Rx1day) at Harrison 1 NNW by year
Year	Wettest day (Rx1day)
1893	47.0 mm (1.9 in)
1894	40.6 mm (1.6 in)
1895	25.4 mm (1.0 in)
1896	54.6 mm (2.1 in)
1897	31.8 mm (1.3 in)
1898	20.8 mm (0.8 in)
1899	68.3 mm (2.7 in)
1900	35.6 mm (1.4 in)
1901	46.5 mm (1.8 in)
1902	54.1 mm (2.1 in)
1903	35.6 mm (1.4 in)
1904	35.6 mm (1.4 in)
1905	88.9 mm (3.5 in)
1906	40.6 mm (1.6 in)
1907	27.9 mm (1.1 in)
1908	31.2 mm (1.2 in)
1909	32.5 mm (1.3 in)
1910	38.6 mm (1.5 in)
1911	39.6 mm (1.6 in)
1912	55.9 mm (2.2 in)
1913	61.5 mm (2.4 in)
1914	70.6 mm (2.8 in)
1915	58.4 mm (2.3 in)
1916	53.8 mm (2.1 in)
1917	48.3 mm (1.9 in)
1918	27.9 mm (1.1 in)
1919	33.3 mm (1.3 in)
1920	38.1 mm (1.5 in)
1921	43.4 mm (1.7 in)
1922	20.3 mm (0.8 in)
1923	50.0 mm (2.0 in)
1924	28.7 mm (1.1 in)
1925	53.3 mm (2.1 in)
1938	10.2 mm (0.4 in)
1939	50.8 mm (2.0 in)
1940	69.3 mm (2.7 in)
1941	80.3 mm (3.2 in)
1942	46.5 mm (1.8 in)
1943	51.3 mm (2.0 in)
1944	48.3 mm (1.9 in)
1945	66.3 mm (2.6 in)
1946	43.2 mm (1.7 in)
1947	63.5 mm (2.5 in)
1948	44.7 mm (1.8 in)
1949	31.2 mm (1.2 in)
1950	44.2 mm (1.7 in)
1951	63.8 mm (2.5 in)
1952	58.2 mm (2.3 in)
1953	31.5 mm (1.2 in)
1954	56.6 mm (2.2 in)
1955	56.9 mm (2.2 in)
1956	51.1 mm (2.0 in)
1957	134.6 mm (5.3 in)
1958	28.7 mm (1.1 in)
1959	32.0 mm (1.3 in)
1960	48.3 mm (1.9 in)
1961	44.5 mm (1.8 in)
1962	49.5 mm (1.9 in)
1963	40.6 mm (1.6 in)
1964	115.1 mm (4.5 in)
1965	54.6 mm (2.1 in)
1966	46.7 mm (1.8 in)
1967	33.5 mm (1.3 in)
1968	37.3 mm (1.5 in)
1969	81.0 mm (3.2 in)
1970	57.2 mm (2.3 in)
1971	66.0 mm (2.6 in)
1972	58.9 mm (2.3 in)
1973	72.4 mm (2.9 in)
1974	64.3 mm (2.5 in)
1975	94.0 mm (3.7 in)
1976	55.9 mm (2.2 in)
1977	22.4 mm (0.9 in)
1978	49.3 mm (1.9 in)
1979	37.6 mm (1.5 in)
1980	36.1 mm (1.4 in)
1981	41.1 mm (1.6 in)
1982	51.8 mm (2.0 in)
1983	46.2 mm (1.8 in)
1984	31.2 mm (1.2 in)
1985	43.7 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Harrison 1 NNW, 1893 to 1985. The record is 178.1 mm (7.0 in) in 1957, marked on the chart; the median year is 68.8 mm (2.7 in).

Wettest five days (Rx5day) at Harrison 1 NNW by year
Year	Wettest five days (Rx5day)
1893	67.3 mm (2.6 in)
1894	80.6 mm (3.2 in)
1895	56.1 mm (2.2 in)
1896	78.8 mm (3.1 in)
1897	58.4 mm (2.3 in)
1898	43.4 mm (1.7 in)
1899	98.0 mm (3.9 in)
1900	66.1 mm (2.6 in)
1901	65.2 mm (2.6 in)
1902	63.0 mm (2.5 in)
1903	73.2 mm (2.9 in)
1904	66.1 mm (2.6 in)
1905	108.0 mm (4.3 in)
1906	71.1 mm (2.8 in)
1907	49.5 mm (1.9 in)
1908	69.8 mm (2.7 in)
1909	51.5 mm (2.0 in)
1910	53.1 mm (2.1 in)
1911	63.2 mm (2.5 in)
1912	114.5 mm (4.5 in)
1913	68.8 mm (2.7 in)
1914	124.0 mm (4.9 in)
1915	58.4 mm (2.3 in)
1916	67.5 mm (2.7 in)
1917	63.3 mm (2.5 in)
1918	39.4 mm (1.6 in)
1919	52.6 mm (2.1 in)
1920	48.3 mm (1.9 in)
1921	43.4 mm (1.7 in)
1922	47.7 mm (1.9 in)
1923	62.7 mm (2.5 in)
1924	54.3 mm (2.1 in)
1925	83.2 mm (3.3 in)
1938	15.3 mm (0.6 in)
1939	83.8 mm (3.3 in)
1940	87.5 mm (3.4 in)
1941	117.9 mm (4.6 in)
1942	74.1 mm (2.9 in)
1943	71.8 mm (2.8 in)
1944	69.2 mm (2.7 in)
1945	111.8 mm (4.4 in)
1946	53.9 mm (2.1 in)
1947	94.4 mm (3.7 in)
1948	56.4 mm (2.2 in)
1949	58.9 mm (2.3 in)
1950	92.0 mm (3.6 in)
1951	81.1 mm (3.2 in)
1952	121.5 mm (4.8 in)
1953	56.8 mm (2.2 in)
1954	86.9 mm (3.4 in)
1955	71.4 mm (2.8 in)
1956	63.1 mm (2.5 in)
1957	178.1 mm (7.0 in)
1958	57.6 mm (2.3 in)
1959	55.4 mm (2.2 in)
1960	75.7 mm (3.0 in)
1961	64.1 mm (2.5 in)
1962	55.6 mm (2.2 in)
1963	56.4 mm (2.2 in)
1964	120.9 mm (4.8 in)
1965	73.2 mm (2.9 in)
1966	61.6 mm (2.4 in)
1967	48.2 mm (1.9 in)
1968	69.1 mm (2.7 in)
1969	130.3 mm (5.1 in)
1970	76.2 mm (3.0 in)
1971	93.9 mm (3.7 in)
1972	156.7 mm (6.2 in)
1973	101.4 mm (4.0 in)
1974	75.5 mm (3.0 in)
1975	108.7 mm (4.3 in)
1976	96.0 mm (3.8 in)
1977	42.4 mm (1.7 in)
1978	95.0 mm (3.7 in)
1979	42.4 mm (1.7 in)
1980	75.2 mm (3.0 in)
1981	51.3 mm (2.0 in)
1982	95.5 mm (3.8 in)
1983	88.1 mm (3.5 in)
1984	68.6 mm (2.7 in)
1985	58.7 mm (2.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Harrison 1 NNW, 1893 to 1985. The record is 47 days in 1904, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Harrison 1 NNW by year
Year	Longest dry spell (CDD)
1893	16 days
1894	32 days
1895	32 days
1896	18 days
1897	22 days
1898	16 days
1899	28 days
1900	40 days
1901	22 days
1902	26 days
1903	24 days
1904	47 days
1905	20 days
1906	26 days
1907	36 days
1908	26 days
1909	36 days
1910	36 days
1911	35 days
1912	32 days
1913	24 days
1914	34 days
1915	34 days
1916	14 days
1917	26 days
1918	15 days
1919	17 days
1920	15 days
1921	19 days
1922	13 days
1923	14 days
1924	25 days
1925	18 days
1938	16 days
1939	20 days
1940	18 days
1941	15 days
1942	13 days
1943	27 days
1944	22 days
1945	20 days
1946	19 days
1947	21 days
1948	36 days
1949	15 days
1950	14 days
1951	16 days
1952	20 days
1953	22 days
1954	20 days
1955	16 days
1956	23 days
1957	21 days
1958	17 days
1959	17 days
1960	18 days
1961	17 days
1962	20 days
1963	25 days
1964	20 days
1965	17 days
1966	19 days
1967	18 days
1968	15 days
1969	27 days
1970	15 days
1971	13 days
1972	14 days
1973	12 days
1974	16 days
1975	15 days
1976	18 days
1977	18 days
1978	24 days
1979	35 days
1980	21 days
1981	19 days
1982	22 days
1983	25 days
1984	20 days
1985	12 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.

Rainfall Return Levels

50 years, 1894 to 1982

A day with at least 50.5 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 117.3 mm (4.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Harrison 1 NNW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	50.5 mm (2.0 in)
5 years	66.6 mm (2.6 in)
10 years	77.9 mm (3.1 in)
25 years	93.1 mm (3.7 in)
50 years	105.0 mm (4.1 in)
100 years	117.3 mm (4.6 in)	Longer than the 50 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, 50 years of values from 1894 to 1982.

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: 134.6 mm (5.3 in) in 1957; 94.0 mm (3.7 in) in 1975; 88.9 mm (3.5 in) in 1905.

Download the Data

Data for Harrison 1 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Harrison 1 NNW 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).