Grand Rapids Sutron Weather Records (USC00203327)

Record envelope, standing records and threshold days for Grand Rapids Sutron (USC00203327), Michigan, United States, with 117 years of record.

Key Facts for Grand Rapids Sutron

Grand Rapids Sutron (USC00203327) is a weather station in Michigan, United States at 42.97 latitude and -85.68 longitude, 179 m (586 ft) above sea level.
The station reports from 1905 to 2021, 117 years of record.
24 records set at Grand Rapids Sutron still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grand Rapids Sutron set a daily record precipitation of 38.9 mm (1.5 in) on 10 May 1948.

About the Station

Location: Michigan, United States, 42.97 latitude, -85.68 longitude.
Elevation: 179 m (586 ft).
Period of record: 1905 to 2021, 117 years.
Eligible elements: 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 Grand Rapids Sutron. 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 Grand Rapids Sutron, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	-5.0 C (23.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	22.8 C (73.0 F)	9.4 C (48.9 F)	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	13.3 C (55.9 F)	-2.2 C (28.0 F)	n/a	n/a
Dec	-6.1 C (21.0 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

24 standing records

24 records at Grand Rapids Sutron still stand. 2021 holds the most, with 12.

All-Time Record Progression

1 new records

1 all-time records were set at Grand Rapids Sutron between 20 August 1939 and 20 August 1939. Each dot is a new record.

Wettest Day of Each Month

Aug: 105.2 mm (4.1 in)

The wettest day on record for each calendar month at Grand Rapids Sutron. The most was 105.2 mm (4.1 in) on 20 August 1939.

Record daily precipitation for each month at Grand Rapids Sutron
Month	Record daily precipitation (mm)	Date
Jan	32.0 mm (1.3 in)	20 January 1907
Feb	56.4 mm (2.2 in)	13 February 1938
Mar	40.1 mm (1.6 in)	16 March 1943
Apr	65.3 mm (2.6 in)	17 April 1922
May	75.7 mm (3.0 in)	21 May 1911
Jun	90.4 mm (3.6 in)	6 June 1905
Jul	74.2 mm (2.9 in)	21 July 1912
Aug	105.2 mm (4.1 in)	20 August 1939
Sep	64.5 mm (2.5 in)	22 September 1947
Oct	60.7 mm (2.4 in)	18 October 1905
Nov	66.5 mm (2.6 in)	4 November 1935
Dec	34.8 mm (1.4 in)	17 December 1921

Period of Record Coverage

2019 to 2021

3 years of record at Grand Rapids Sutron, 2019 to 2021. 3 years have data for under 90 percent of days and are left out of rankings: 2019, 2020, 2021.

Latest Records

Latest records at Grand Rapids Sutron
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 May 1948	Grand Rapids Sutron, US	daily rain	38.9 mm (1.5 in)	18.1 mm (0.7 in)	16 years	28 of 100 (Routine)
28 April 1948	Grand Rapids Sutron, US	daily rain	14.5 mm (0.6 in)	2.3 mm (0.09 in)	22 years	12 of 100 (Routine)
27 April 1948	Grand Rapids Sutron, US	daily rain	19.8 mm (0.8 in)	3.5 mm (0.14 in)	40 years	20 of 100 (Routine)
20 March 1948	Grand Rapids Sutron, US	daily rain	32.5 mm (1.3 in)	5.6 mm (0.22 in)	26 years	20 of 100 (Routine)
19 March 1948	Grand Rapids Sutron, US	daily rain	22.1 mm (0.9 in)	15.7 mm (0.6 in)	41 years	20 of 100 (Routine)
29 February 1948	Grand Rapids Sutron, US	daily rain	7.6 mm (0.30 in)	5.3 mm (0.21 in)	32 years	20 of 100 (Routine)
28 February 1948	Grand Rapids Sutron, US	daily rain	23.6 mm (0.9 in)	17.5 mm (0.7 in)	29 years	20 of 100 (Routine)
2 January 1948	Grand Rapids Sutron, US	daily rain	17.5 mm (0.7 in)	3.3 mm (0.13 in)	6 years	13 of 100 (Routine)
5 December 1947	Grand Rapids Sutron, US	daily rain	26.4 mm (1.0 in)	6.1 mm (0.24 in)	26 years	24 of 100 (Routine)
3 December 1947	Grand Rapids Sutron, US	daily rain	14.2 mm (0.6 in)	5.3 mm (0.21 in)	8 years	16 of 100 (Routine)
11 November 1947	Grand Rapids Sutron, US	daily rain	19.1 mm (0.8 in)	9.4 mm (0.37 in)	17 years	20 of 100 (Routine)
22 September 1947	Grand Rapids Sutron, US	monthly rain	64.5 mm (2.5 in)	4.3 mm (0.17 in)	30 years	27 of 100 (Routine)
30 August 1947	Grand Rapids Sutron, US	daily rain	38.9 mm (1.5 in)	25.7 mm (1.0 in)	6 years	26 of 100 (Routine)
6 July 1947	Grand Rapids Sutron, US	daily rain	31.0 mm (1.2 in)	3.1 mm (0.12 in)	25 years	13 of 100 (Routine)
2 June 1947	Grand Rapids Sutron, US	daily rain	21.6 mm (0.9 in)	4.3 mm (0.17 in)	30 years	16 of 100 (Routine)
11 April 1947	Grand Rapids Sutron, US	daily rain	35.6 mm (1.4 in)	8.9 mm (0.35 in)	13 years	19 of 100 (Routine)
6 April 1947	Grand Rapids Sutron, US	daily rain	26.7 mm (1.1 in)	11.7 mm (0.5 in)	18 years	24 of 100 (Routine)
5 April 1947	Grand Rapids Sutron, US	daily rain	26.7 mm (1.1 in)	10.4 mm (0.4 in)	29 years	25 of 100 (Routine)
2 April 1947	Grand Rapids Sutron, US	daily rain	22.4 mm (0.9 in)	6.4 mm (0.25 in)	1 year	12 of 100 (Routine)
25 March 1947	Grand Rapids Sutron, US	daily rain	24.1 mm (0.9 in)	11.1 mm (0.4 in)	25 years	20 of 100 (Routine)

Extremes by Year

1905 to 2021

Yearly extremes at Grand Rapids Sutron: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	22.8 C (73.0 F)	2019	19.4 C (66.9 F)	3
Coldest night (TNn)	-20.0 C (-4.0 F)	2021	-8.3 C (17.1 F)	3
Wettest day (Rx1day)	105.2 mm (4.1 in)	1939	45.7 mm (1.8 in)	46
Wettest five days (Rx5day)	130.5 mm (5.1 in)	1911	73.7 mm (2.9 in)	44
Longest dry spell (CDD)	34 days	1924	18 days	46

Hottest day (TXx)

The hottest day of the year at Grand Rapids Sutron, 1905 to 2021. The record is 22.8 C (73.0 F) in 2019, marked on the chart; the median year is 19.4 C (66.9 F).

Hottest day (TXx) at Grand Rapids Sutron by year
Year	Hottest day (TXx)
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
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
2018	n/a
2019	22.8 C (73.0 F)
2020	13.3 C (55.9 F)
2021	19.4 C (66.9 F)

Coldest night (TNn)

The coldest night of the year at Grand Rapids Sutron, 1905 to 2021. The record is -20.0 C (-4.0 F) in 2021, marked on the chart; the median year is -8.3 C (17.1 F).

Coldest night (TNn) at Grand Rapids Sutron by year
Year	Coldest night (TNn)
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
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
2018	n/a
2019	9.4 C (48.9 F)
2020	-8.3 C (17.1 F)
2021	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at Grand Rapids Sutron, 1905 to 2021. The record is 105.2 mm (4.1 in) in 1939, marked on the chart; the median year is 45.7 mm (1.8 in).

Wettest day (Rx1day) at Grand Rapids Sutron by year
Year	Wettest day (Rx1day)
1905	90.4 mm (3.6 in)
1906	51.3 mm (2.0 in)
1907	62.5 mm (2.5 in)
1908	62.7 mm (2.5 in)
1909	70.6 mm (2.8 in)
1910	72.1 mm (2.8 in)
1911	75.7 mm (3.0 in)
1912	74.2 mm (2.9 in)
1913	45.7 mm (1.8 in)
1914	66.0 mm (2.6 in)
1915	54.9 mm (2.2 in)
1916	43.2 mm (1.7 in)
1917	60.2 mm (2.4 in)
1918	34.3 mm (1.4 in)
1919	51.6 mm (2.0 in)
1920	37.1 mm (1.5 in)
1921	55.1 mm (2.2 in)
1922	65.3 mm (2.6 in)
1923	42.9 mm (1.7 in)
1924	32.8 mm (1.3 in)
1925	43.9 mm (1.7 in)
1926	48.0 mm (1.9 in)
1927	30.7 mm (1.2 in)
1928	63.8 mm (2.5 in)
1929	45.2 mm (1.8 in)
1930	27.7 mm (1.1 in)
1931	26.7 mm (1.1 in)
1932	51.6 mm (2.0 in)
1933	39.1 mm (1.5 in)
1934	54.1 mm (2.1 in)
1935	66.5 mm (2.6 in)
1936	42.7 mm (1.7 in)
1937	39.1 mm (1.5 in)
1938	56.4 mm (2.2 in)
1939	105.2 mm (4.1 in)
1940	45.7 mm (1.8 in)
1941	40.9 mm (1.6 in)
1942	40.4 mm (1.6 in)
1943	40.1 mm (1.6 in)
1944	31.0 mm (1.2 in)
1945	31.2 mm (1.2 in)
1946	24.6 mm (1.0 in)
1947	64.5 mm (2.5 in)
1948	38.9 mm (1.5 in)
2018	n/a
2019	n/a
2020	0.0 mm (0.00 in)
2021	0.5 mm (0.02 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grand Rapids Sutron, 1905 to 2021. The record is 130.5 mm (5.1 in) in 1911, marked on the chart; the median year is 73.7 mm (2.9 in).

Wettest five days (Rx5day) at Grand Rapids Sutron by year
Year	Wettest five days (Rx5day)
1905	107.1 mm (4.2 in)
1906	64.3 mm (2.5 in)
1907	81.3 mm (3.2 in)
1908	81.0 mm (3.2 in)
1909	83.9 mm (3.3 in)
1910	73.6 mm (2.9 in)
1911	130.5 mm (5.1 in)
1912	111.0 mm (4.4 in)
1913	54.2 mm (2.1 in)
1914	90.7 mm (3.6 in)
1915	91.2 mm (3.6 in)
1916	70.1 mm (2.8 in)
1917	71.9 mm (2.8 in)
1918	81.9 mm (3.2 in)
1919	95.6 mm (3.8 in)
1920	71.1 mm (2.8 in)
1921	63.6 mm (2.5 in)
1922	78.5 mm (3.1 in)
1923	75.9 mm (3.0 in)
1924	49.6 mm (2.0 in)
1925	52.4 mm (2.1 in)
1926	63.0 mm (2.5 in)
1927	61.9 mm (2.4 in)
1928	88.1 mm (3.5 in)
1929	73.7 mm (2.9 in)
1930	39.7 mm (1.6 in)
1931	48.3 mm (1.9 in)
1932	80.0 mm (3.1 in)
1933	59.7 mm (2.4 in)
1934	70.9 mm (2.8 in)
1935	88.4 mm (3.5 in)
1936	73.2 mm (2.9 in)
1937	68.8 mm (2.7 in)
1938	85.8 mm (3.4 in)
1939	115.7 mm (4.6 in)
1940	97.7 mm (3.8 in)
1941	82.4 mm (3.2 in)
1942	87.7 mm (3.5 in)
1943	52.1 mm (2.1 in)
1944	51.1 mm (2.0 in)
1945	60.9 mm (2.4 in)
1946	53.1 mm (2.1 in)
1947	79.5 mm (3.1 in)
1948	72.4 mm (2.9 in)
2018	n/a
2019	n/a
2020	n/a
2021	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Grand Rapids Sutron, 1905 to 2021. The record is 34 days in 1924, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Grand Rapids Sutron by year
Year	Longest dry spell (CDD)
1905	16 days
1906	23 days
1907	19 days
1908	22 days
1909	21 days
1910	27 days
1911	12 days
1912	16 days
1913	24 days
1914	28 days
1915	28 days
1916	13 days
1917	20 days
1918	25 days
1919	19 days
1920	17 days
1921	20 days
1922	15 days
1923	22 days
1924	34 days
1925	17 days
1926	16 days
1927	18 days
1928	11 days
1929	14 days
1930	20 days
1931	18 days
1932	17 days
1933	19 days
1934	20 days
1935	10 days
1936	24 days
1937	15 days
1938	21 days
1939	18 days
1940	14 days
1941	14 days
1942	18 days
1943	18 days
1944	28 days
1945	13 days
1946	13 days
1947	29 days
1948	16 days
2018	n/a
2019	n/a
2020	1 day
2021	1 day

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

40 years, 1906 to 1947

A day with at least 48.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 99.2 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Grand Rapids Sutron: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.1 mm (1.9 in)
5 years	63.2 mm (2.5 in)
10 years	72.6 mm (2.9 in)
25 years	83.8 mm (3.3 in)
50 years	91.7 mm (3.6 in)	Longer than the 40 years of record
100 years	99.2 mm (3.9 in)	Longer than the 40 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, 40 years of values from 1906 to 1947.

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: 105.2 mm (4.1 in) in 1939; 75.7 mm (3.0 in) in 1911; 74.2 mm (2.9 in) in 1912.

Download the Data

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