Rock 1 E Weather Records (USC00207068)

Record envelope, standing records and threshold days for Rock 1 E (USC00207068), Michigan, United States, with 86 years of record.

Key Facts for Rock 1 E

Rock 1 E (USC00207068) is a weather station in Michigan, United States at 46.07 latitude and -87.15 longitude, 287 m (940 ft) above sea level.
The station reports from 1905 to 1990, 86 years of record.
1,464 records set at Rock 1 E still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Rock 1 E set a daily record snow depth of 10.2 cm (4.0 in) on 21 October 1989.

About the Station

Location: Michigan, United States, 46.07 latitude, -87.15 longitude.
Elevation: 287 m (940 ft).
Period of record: 1905 to 1990, 86 years.
Eligible elements: 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 Rock 1 E. 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 Rock 1 E, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Feb	11.1 C (52.0 F)	-36.1 C (-33.0 F)	n/a	n/a
Mar	25.0 C (77.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-21.7 C (-7.1 F)	n/a	n/a
May	33.3 C (91.9 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-2.8 C (27.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Aug	34.4 C (93.9 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	32.8 C (91.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-13.9 C (7.0 F)	n/a	n/a
Nov	17.2 C (63.0 F)	-19.4 C (-2.9 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-29.4 C (-20.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rock 1 E still stand. 1913 holds the most, with 90.

Standing records at Rock 1 E by the year they were set
Year set	Standing records
1905	3
1906	87
1907	84
1908	83
1909	73
1910	72
1911	68
1912	83
1913	90
1914	75
1915	60
1916	62
1917	86
1918	69
1919	67
1920	67
1921	84
1922	76
1923	68
1924	63
1925	44

All-Time Record Progression

1 new records

1 all-time records were set at Rock 1 E between 1 December 1985 and 1 December 1985. Each dot is a new record.

Wettest Day of Each Month

Jul: 106.7 mm (4.2 in)

The wettest day on record for each calendar month at Rock 1 E. The most was 106.7 mm (4.2 in) on 12 July 1914.

Record daily precipitation for each month at Rock 1 E
Month	Record daily precipitation (mm)	Date
Jan	35.6 mm (1.4 in)	14 January 1940
Feb	30.7 mm (1.2 in)	28 February 1939
Mar	53.3 mm (2.1 in)	20 March 1921
Apr	43.2 mm (1.7 in)	23 April 1920
May	76.5 mm (3.0 in)	31 May 1944
Jun	75.9 mm (3.0 in)	30 June 1953
Jul	106.7 mm (4.2 in)	12 July 1914
Aug	91.4 mm (3.6 in)	16 August 1978
Sep	63.5 mm (2.5 in)	10 September 1978
Oct	77.5 mm (3.1 in)	28 October 1970
Nov	63.8 mm (2.5 in)	2 November 1985
Dec	40.6 mm (1.6 in)	31 December 1906

Period of Record Coverage

1905 to 1926

22 years of record at Rock 1 E, 1905 to 1926. 3 years have data for under 90 percent of days and are left out of rankings: 1905, 1925, 1926.

Days with data per year at Rock 1 E
Year	Days with data	Share of year	Complete
1905	36	10%	No
1906	365	100%	Yes
1907	364	100%	Yes
1908	365	100%	Yes
1909	365	100%	Yes
1910	364	100%	Yes
1911	363	99%	Yes
1912	363	99%	Yes
1913	363	99%	Yes
1914	365	100%	Yes
1915	365	100%	Yes
1916	363	99%	Yes
1917	364	100%	Yes
1918	346	95%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	362	99%	Yes
1923	364	100%	Yes
1924	349	95%	Yes
1925	302	83%	No
1926	7	2%	No

Latest Records

Latest records at Rock 1 E
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1989	Rock 1 E, US	daily snow depth	10.2 cm (4.0 in)	5.1 cm (2.0 in)	20 years	23 of 100 (Routine)
20 October 1989	Rock 1 E, US	daily snow depth	20.3 cm (8.0 in)	17.8 cm (7.0 in)	64 years	58 of 100 (Notable)
23 June 1989	Rock 1 E, US	daily rain	23.6 mm (0.9 in)	3.3 mm (0.13 in)	39 years	20 of 100 (Routine)
8 June 1989	Rock 1 E, US	daily rain	35.6 mm (1.4 in)	17.3 mm (0.7 in)	22 years	29 of 100 (Routine)
15 March 1989	Rock 1 E, US	daily rain	33.0 mm (1.3 in)	8.1 mm (0.32 in)	50 years	34 of 100 (Routine)
15 March 1989	Rock 1 E, US	daily snowfall	30.5 cm (12.0 in)	5.1 cm (2.0 in)	50 years	31 of 100 (Routine)
8 January 1989	Rock 1 E, US	daily rain	12.7 mm (0.5 in)	5.1 mm (0.20 in)	81 years	20 of 100 (Routine)
14 December 1988	Rock 1 E, US	daily snowfall	10.9 cm (4.3 in)	2.0 cm (0.8 in)	36 years	22 of 100 (Routine)
16 November 1988	Rock 1 E, US	daily rain	23.6 mm (0.9 in)	6.8 mm (0.27 in)	28 years	20 of 100 (Routine)
5 November 1988	Rock 1 E, US	daily rain	26.7 mm (1.1 in)	0.8 mm (0.03 in)	40 years	21 of 100 (Routine)
1 November 1988	Rock 1 E, US	daily snowfall	15.2 cm (6.0 in)	5.0 cm (2.0 in)	77 years	41 of 100 (Notable)
31 October 1988	Rock 1 E, US	daily snowfall	5.1 cm (2.0 in)	3.8 cm (1.5 in)	37 years	27 of 100 (Routine)
31 October 1988	Rock 1 E, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	34 years	20 of 100 (Routine)
14 October 1988	Rock 1 E, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	49 years	32 of 100 (Routine)
13 October 1988	Rock 1 E, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	39 years	34 of 100 (Routine)
12 October 1988	Rock 1 E, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	82 years	53 of 100 (Notable)
12 October 1988	Rock 1 E, US	daily snow depth	20.3 cm (8.0 in)	20.3 cm (8.0 in)	42 years	40 of 100 (Notable)
11 October 1988	Rock 1 E, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	82 years	64 of 100 (Major)
11 October 1988	Rock 1 E, US	daily rain	36.8 mm (1.4 in)	16.5 mm (0.6 in)	75 years	48 of 100 (Notable)
11 October 1988	Rock 1 E, US	daily snow depth	12.7 cm (5.0 in)	2.5 cm (1.0 in)	82 years	34 of 100 (Routine)

Climate Trend

17 complete years, 1906 to 1923

One stripe for each of 17 complete years at Rock 1 E, 1906 to 1923. Blue stripes are years cooler than the station's own mean of 4.7 C (40.4 F); red stripes are warmer. The coolest year was 1917, at 2.4 C (36.3 F), and the warmest was 1921, at 7.2 C (45.0 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Rock 1 E as warming stripes, 1906 to 1923
Year	Annual mean temperature	Difference from the station mean
1906	4.6 C	-0.08 C
1907	3.3 C	-1.36 C
1908	5.1 C	+0.41 C
1909	4.3 C	-0.37 C
1910	4.7 C	0.00 C
1911	5.0 C	+0.31 C
1912	3.1 C	-1.52 C
1913	4.6 C	-0.09 C
1914	4.7 C	-0.01 C
1915	4.8 C	+0.09 C
1916	4.0 C	-0.66 C
1917	2.4 C	-2.27 C
1919	5.9 C	+1.23 C
1920	5.3 C	+0.64 C
1921	7.2 C	+2.57 C
1922	5.7 C	+1.02 C
1923	4.8 C	+0.11 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

1905 to 1990

Yearly extremes at Rock 1 E: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1911	33.3 C (91.9 F)	22
Coldest night (TNn)	-36.1 C (-33.0 F)	1912	-31.1 C (-24.0 F)	22
Wettest day (Rx1day)	106.7 mm (4.2 in)	1914	48.8 mm (1.9 in)	74
Wettest five days (Rx5day)	156.5 mm (6.2 in)	1982	73.1 mm (2.9 in)	73
Longest dry spell (CDD)	42 days	1918	19 days	74

Hottest day (TXx)

The hottest day of the year at Rock 1 E, 1905 to 1990. The record is 37.8 C (100.0 F) in 1911, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Rock 1 E by year
Year	Hottest day (TXx)
1905	8.9 C (48.0 F)
1906	33.3 C (91.9 F)
1907	33.3 C (91.9 F)
1908	32.8 C (91.0 F)
1909	32.2 C (90.0 F)
1910	35.0 C (95.0 F)
1911	37.8 C (100.0 F)
1912	33.9 C (93.0 F)
1913	32.2 C (90.0 F)
1914	33.3 C (91.9 F)
1915	31.1 C (88.0 F)
1916	36.7 C (98.1 F)
1917	37.2 C (99.0 F)
1918	34.4 C (93.9 F)
1919	34.4 C (93.9 F)
1920	31.7 C (89.1 F)
1921	36.1 C (97.0 F)
1922	32.8 C (91.0 F)
1923	33.3 C (91.9 F)
1924	32.2 C (90.0 F)
1925	33.3 C (91.9 F)
1926	-3.3 C (26.1 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
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a

Coldest night (TNn)

The coldest night of the year at Rock 1 E, 1905 to 1990. The record is -36.1 C (-33.0 F) in 1912, marked on the chart; the median year is -31.1 C (-24.0 F).

Coldest night (TNn) at Rock 1 E by year
Year	Coldest night (TNn)
1905	-22.2 C (-8.0 F)
1906	-31.1 C (-24.0 F)
1907	-32.8 C (-27.0 F)
1908	-33.3 C (-27.9 F)
1909	-30.6 C (-23.1 F)
1910	-32.8 C (-27.0 F)
1911	-30.6 C (-23.1 F)
1912	-36.1 C (-33.0 F)
1913	-31.1 C (-24.0 F)
1914	-32.2 C (-26.0 F)
1915	-33.3 C (-27.9 F)
1916	-27.8 C (-18.0 F)
1917	-32.8 C (-27.0 F)
1918	-34.4 C (-29.9 F)
1919	-28.9 C (-20.0 F)
1920	-28.9 C (-20.0 F)
1921	-23.3 C (-9.9 F)
1922	-31.7 C (-25.1 F)
1923	-31.7 C (-25.1 F)
1924	-31.1 C (-24.0 F)
1925	-25.6 C (-14.1 F)
1926	-26.7 C (-16.1 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
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a

Wettest day (Rx1day)

The wettest day of the year at Rock 1 E, 1905 to 1990. The record is 106.7 mm (4.2 in) in 1914, marked on the chart; the median year is 48.8 mm (1.9 in).

Wettest day (Rx1day) at Rock 1 E by year
Year	Wettest day (Rx1day)
1905	17.8 mm (0.7 in)
1906	40.6 mm (1.6 in)
1907	39.9 mm (1.6 in)
1908	42.7 mm (1.7 in)
1909	59.7 mm (2.4 in)
1910	33.0 mm (1.3 in)
1911	48.3 mm (1.9 in)
1912	33.0 mm (1.3 in)
1913	44.5 mm (1.8 in)
1914	106.7 mm (4.2 in)
1915	41.7 mm (1.6 in)
1916	64.5 mm (2.5 in)
1917	34.3 mm (1.4 in)
1918	35.1 mm (1.4 in)
1919	51.8 mm (2.0 in)
1920	62.7 mm (2.5 in)
1921	53.3 mm (2.1 in)
1922	66.0 mm (2.6 in)
1923	50.8 mm (2.0 in)
1924	50.8 mm (2.0 in)
1925	33.0 mm (1.3 in)
1926	n/a
1938	16.5 mm (0.6 in)
1939	53.6 mm (2.1 in)
1940	38.1 mm (1.5 in)
1941	38.4 mm (1.5 in)
1942	72.4 mm (2.9 in)
1943	69.3 mm (2.7 in)
1944	76.5 mm (3.0 in)
1945	51.1 mm (2.0 in)
1946	26.4 mm (1.0 in)
1947	48.5 mm (1.9 in)
1948	38.1 mm (1.5 in)
1949	53.3 mm (2.1 in)
1950	20.3 mm (0.8 in)
1951	47.5 mm (1.9 in)
1952	58.9 mm (2.3 in)
1953	75.9 mm (3.0 in)
1954	29.2 mm (1.1 in)
1955	33.8 mm (1.3 in)
1956	42.4 mm (1.7 in)
1957	49.0 mm (1.9 in)
1958	63.8 mm (2.5 in)
1959	63.8 mm (2.5 in)
1960	48.0 mm (1.9 in)
1961	42.4 mm (1.7 in)
1962	73.4 mm (2.9 in)
1963	39.9 mm (1.6 in)
1964	51.6 mm (2.0 in)
1965	37.6 mm (1.5 in)
1966	67.8 mm (2.7 in)
1967	60.2 mm (2.4 in)
1968	59.7 mm (2.4 in)
1969	51.8 mm (2.0 in)
1970	77.5 mm (3.1 in)
1971	31.5 mm (1.2 in)
1972	49.5 mm (1.9 in)
1973	47.0 mm (1.9 in)
1974	52.8 mm (2.1 in)
1975	59.2 mm (2.3 in)
1976	36.8 mm (1.4 in)
1977	29.2 mm (1.1 in)
1978	91.4 mm (3.6 in)
1979	41.1 mm (1.6 in)
1980	40.6 mm (1.6 in)
1981	71.1 mm (2.8 in)
1982	51.1 mm (2.0 in)
1983	44.7 mm (1.8 in)
1984	55.9 mm (2.2 in)
1985	63.8 mm (2.5 in)
1986	38.1 mm (1.5 in)
1987	67.3 mm (2.6 in)
1988	51.3 mm (2.0 in)
1989	47.0 mm (1.9 in)
1990	11.9 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rock 1 E, 1905 to 1990. The record is 156.5 mm (6.2 in) in 1982, marked on the chart; the median year is 73.1 mm (2.9 in).

Wettest five days (Rx5day) at Rock 1 E by year
Year	Wettest five days (Rx5day)
1905	20.4 mm (0.8 in)
1906	61.0 mm (2.4 in)
1907	43.7 mm (1.7 in)
1908	67.1 mm (2.6 in)
1909	60.7 mm (2.4 in)
1910	50.0 mm (2.0 in)
1911	83.4 mm (3.3 in)
1912	66.3 mm (2.6 in)
1913	50.3 mm (2.0 in)
1914	111.8 mm (4.4 in)
1915	69.1 mm (2.7 in)
1916	89.2 mm (3.5 in)
1917	69.3 mm (2.7 in)
1918	62.7 mm (2.5 in)
1919	61.2 mm (2.4 in)
1920	98.5 mm (3.9 in)
1921	92.7 mm (3.6 in)
1922	99.8 mm (3.9 in)
1923	94.7 mm (3.7 in)
1924	61.0 mm (2.4 in)
1925	47.1 mm (1.9 in)
1926	n/a
1938	n/a
1939	75.6 mm (3.0 in)
1940	49.5 mm (1.9 in)
1941	45.0 mm (1.8 in)
1942	34.0 mm (1.3 in)
1943	111.7 mm (4.4 in)
1944	108.8 mm (4.3 in)
1945	70.2 mm (2.8 in)
1946	56.5 mm (2.2 in)
1947	77.7 mm (3.1 in)
1948	83.8 mm (3.3 in)
1949	96.5 mm (3.8 in)
1950	52.0 mm (2.0 in)
1951	64.5 mm (2.5 in)
1952	111.2 mm (4.4 in)
1953	123.9 mm (4.9 in)
1954	67.9 mm (2.7 in)
1955	75.5 mm (3.0 in)
1956	81.6 mm (3.2 in)
1957	71.5 mm (2.8 in)
1958	97.6 mm (3.8 in)
1959	103.5 mm (4.1 in)
1960	120.6 mm (4.7 in)
1961	62.8 mm (2.5 in)
1962	85.1 mm (3.4 in)
1963	56.1 mm (2.2 in)
1964	86.9 mm (3.4 in)
1965	65.5 mm (2.6 in)
1966	117.6 mm (4.6 in)
1967	96.3 mm (3.8 in)
1968	104.7 mm (4.1 in)
1969	84.0 mm (3.3 in)
1970	106.7 mm (4.2 in)
1971	55.9 mm (2.2 in)
1972	69.6 mm (2.7 in)
1973	102.1 mm (4.0 in)
1974	62.2 mm (2.4 in)
1975	105.7 mm (4.2 in)
1976	46.9 mm (1.8 in)
1977	53.1 mm (2.1 in)
1978	137.1 mm (5.4 in)
1979	70.0 mm (2.8 in)
1980	66.3 mm (2.6 in)
1981	104.9 mm (4.1 in)
1982	156.5 mm (6.2 in)
1983	81.6 mm (3.2 in)
1984	64.6 mm (2.5 in)
1985	89.2 mm (3.5 in)
1986	45.8 mm (1.8 in)
1987	103.6 mm (4.1 in)
1988	73.1 mm (2.9 in)
1989	77.3 mm (3.0 in)
1990	25.9 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rock 1 E, 1905 to 1990. The record is 42 days in 1918, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Rock 1 E by year
Year	Longest dry spell (CDD)
1905	17 days
1906	18 days
1907	15 days
1908	28 days
1909	20 days
1910	22 days
1911	24 days
1912	27 days
1913	22 days
1914	20 days
1915	28 days
1916	17 days
1917	25 days
1918	42 days
1919	41 days
1920	32 days
1921	21 days
1922	23 days
1923	22 days
1924	19 days
1925	20 days
1926	n/a
1938	1 day
1939	20 days
1940	12 days
1941	2 days
1942	3 days
1943	18 days
1944	17 days
1945	11 days
1946	13 days
1947	18 days
1948	17 days
1949	13 days
1950	11 days
1951	13 days
1952	27 days
1953	17 days
1954	21 days
1955	19 days
1956	19 days
1957	20 days
1958	19 days
1959	13 days
1960	16 days
1961	20 days
1962	15 days
1963	20 days
1964	23 days
1965	25 days
1966	16 days
1967	20 days
1968	12 days
1969	25 days
1970	20 days
1971	19 days
1972	17 days
1973	16 days
1974	14 days
1975	19 days
1976	20 days
1977	12 days
1978	24 days
1979	15 days
1980	19 days
1981	18 days
1982	18 days
1983	22 days
1984	20 days
1985	18 days
1986	22 days
1987	23 days
1988	17 days
1989	12 days
1990	14 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

58 years, 1906 to 1989

A day with at least 49.3 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 91.7 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Rock 1 E: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.3 mm (1.9 in)
5 years	62.8 mm (2.5 in)
10 years	70.7 mm (2.8 in)
25 years	79.9 mm (3.1 in)
50 years	86.1 mm (3.4 in)
100 years	91.7 mm (3.6 in)	Longer than the 58 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, 58 years of values from 1906 to 1989.

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: 106.7 mm (4.2 in) in 1914; 77.5 mm (3.1 in) in 1970; 76.5 mm (3.0 in) in 1944.

Download the Data

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