Ft Ripley Weather Records (USC00212904)

Record envelope, standing records and threshold days for Ft Ripley (USC00212904), Minnesota, United States, with 102 years of record.

Key Facts for Ft Ripley

Ft Ripley (USC00212904) is a weather station in Minnesota, United States at 46.18 latitude and -94.37 longitude, 346 m (1,134 ft) above sea level.
The station reports from 1889 to 1990, 102 years of record.
1,464 records set at Ft Ripley still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ft Ripley set a daily record precipitation of 36.8 mm (1.4 in) on 3 June 1990.

About the Station

Location: Minnesota, United States, 46.18 latitude, -94.37 longitude.
Elevation: 346 m (1,134 ft).
Period of record: 1889 to 1990, 102 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 Ft Ripley. 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 Ft Ripley, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.7 C (53.1 F)	-46.1 C (-51.0 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-42.8 C (-45.0 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-39.4 C (-38.9 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-17.2 C (1.0 F)	n/a	n/a
May	34.4 C (93.9 F)	-9.4 C (15.1 F)	n/a	n/a
Jun	38.3 C (100.9 F)	-2.8 C (27.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	-0.6 C (30.9 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-8.9 C (16.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-17.8 C (0.0 F)	n/a	n/a
Nov	22.2 C (72.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Dec	12.8 C (55.0 F)	-39.4 C (-38.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ft Ripley still stand. 1919 holds the most, with 75.

Standing records at Ft Ripley by the year they were set
Year set	Standing records
1906	44
1907	39
1908	56
1909	42
1910	72
1911	54
1912	63
1913	65
1914	70
1915	58
1916	66
1917	64
1918	60
1919	75
1920	43
1921	52
1922	47
1923	59
1924	55
1925	73
1926	45
1927	47
1928	45
1929	29
1930	50
1931	57
1932	34

All-Time Record Progression

8 new records

8 all-time records were set at Ft Ripley between 28 May 1941 and 11 January 1975. Each dot is a new record.

When Ft Ripley set new all-time records
Date	Kind	Detail
1941-05-28	Record daily precipitation	Record daily precipitation 75.4 mm (3.0 in)
1941-09-15	Record daily precipitation	Record daily precipitation 80.0 mm (3.1 in)
1942-08-08	Record daily precipitation	Record daily precipitation 96.0 mm (3.8 in)
1945-08-31	Record daily precipitation	Record daily precipitation 101.1 mm (4.0 in)
1953-08-01	Record daily precipitation	Record daily precipitation 137.2 mm (5.4 in)
1955-08-26	Record daily precipitation	Record daily precipitation 140.2 mm (5.5 in)
1972-07-22	Record daily precipitation	Record daily precipitation 275.3 mm (10.8 in)
1975-01-11	Record daily snowfall	Record daily snowfall 35.6 cm (14.0 in)

Wettest Day of Each Month

Jul: 275.3 mm (10.8 in)

The wettest day on record for each calendar month at Ft Ripley. The most was 275.3 mm (10.8 in) on 22 July 1972.

Record daily precipitation for each month at Ft Ripley
Month	Record daily precipitation (mm)	Date
Jan	24.1 mm (0.9 in)	23 January 1982
Feb	40.6 mm (1.6 in)	27 February 1971
Mar	31.2 mm (1.2 in)	12 March 1990
Apr	49.5 mm (1.9 in)	4 April 1968
May	75.4 mm (3.0 in)	28 May 1941
Jun	81.3 mm (3.2 in)	11 June 1986
Jul	275.3 mm (10.8 in)	22 July 1972
Aug	140.2 mm (5.5 in)	26 August 1955
Sep	80.0 mm (3.1 in)	15 September 1941
Oct	95.3 mm (3.8 in)	6 October 1946
Nov	45.2 mm (1.8 in)	9 November 1977
Dec	23.6 mm (0.9 in)	13 December 1968

Period of Record Coverage

1906 to 1932

27 years of record at Ft Ripley, 1906 to 1932. 8 years have data for under 90 percent of days and are left out of rankings: 1906, 1907, 1909, 1918, 1923, 1927, 1929, 1932.

Days with data per year at Ft Ripley
Year	Days with data	Share of year	Complete
1906	183	50%	No
1907	209	57%	No
1908	345	94%	Yes
1909	301	82%	No
1910	360	99%	Yes
1911	363	99%	Yes
1912	363	99%	Yes
1913	355	97%	Yes
1914	363	99%	Yes
1915	365	100%	Yes
1916	363	99%	Yes
1917	349	96%	Yes
1918	302	83%	No
1919	334	92%	Yes
1920	364	99%	Yes
1921	363	99%	Yes
1922	335	92%	Yes
1923	239	65%	No
1924	359	98%	Yes
1925	361	99%	Yes
1926	363	99%	Yes
1927	322	88%	No
1928	356	97%	Yes
1929	203	56%	No
1930	356	98%	Yes
1931	358	98%	Yes
1932	324	89%	No

Latest Records

Latest records at Ft Ripley
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 June 1990	Ft Ripley, US	daily rain	36.8 mm (1.4 in)	7.1 mm (0.28 in)	51 years	31 of 100 (Routine)
16 March 1990	Ft Ripley, US	daily rain	19.8 mm (0.8 in)	0.7 mm (0.03 in)	100 years	20 of 100 (Routine)
16 March 1990	Ft Ripley, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	69 years	7 of 100 (Routine)
12 March 1990	Ft Ripley, US	monthly rain	31.2 mm (1.2 in)	2.0 mm (0.08 in)	7 years	25 of 100 (Routine)
11 March 1990	Ft Ripley, US	daily rain (Tie)	11.4 mm (0.4 in)	tie	95 years	9 of 100 (Routine)
9 March 1990	Ft Ripley, US	daily snowfall	7.6 cm (3.0 in)	1.2 cm (0.5 in)	72 years	33 of 100 (Routine)
9 March 1990	Ft Ripley, US	daily rain (Tie)	6.4 mm (0.25 in)	tie	97 years	9 of 100 (Routine)
8 March 1990	Ft Ripley, US	daily rain	11.4 mm (0.4 in)	5.8 mm (0.23 in)	1 year	20 of 100 (Routine)
16 February 1990	Ft Ripley, US	daily snowfall	20.3 cm (8.0 in)	2.5 cm (1.0 in)	28 years	24 of 100 (Routine)
29 October 1989	Ft Ripley, US	daily rain	34.3 mm (1.4 in)	22.9 mm (0.9 in)	34 years	40 of 100 (Notable)
21 September 1989	Ft Ripley, US	daily rain	50.8 mm (2.0 in)	10.2 mm (0.4 in)	83 years	43 of 100 (Notable)
4 September 1989	Ft Ripley, US	daily rain	67.3 mm (2.6 in)	32.2 mm (1.3 in)	18 years	44 of 100 (Notable)
30 May 1989	Ft Ripley, US	daily rain	38.1 mm (1.5 in)	5.1 mm (0.20 in)	80 years	38 of 100 (Notable)
2 April 1989	Ft Ripley, US	daily snowfall	5.1 cm (2.0 in)	1.3 cm (0.5 in)	66 years	32 of 100 (Routine)
15 March 1989	Ft Ripley, US	daily snow depth	71.1 cm (28.0 in)	2.5 cm (1.0 in)	20 years	17 of 100 (Routine)
14 January 1989	Ft Ripley, US	daily snow depth (Tie)	73.7 cm (29.0 in)	tie	14 years	3 of 100 (Routine)
13 January 1989	Ft Ripley, US	daily snow depth (Tie)	73.7 cm (29.0 in)	tie	14 years	3 of 100 (Routine)
12 January 1989	Ft Ripley, US	daily snow depth	76.2 cm (30.0 in)	2.5 cm (1.0 in)	14 years	15 of 100 (Routine)
11 January 1989	Ft Ripley, US	daily snow depth	76.2 cm (30.0 in)	7.6 cm (3.0 in)	14 years	17 of 100 (Routine)
10 January 1989	Ft Ripley, US	daily snow depth	76.2 cm (30.0 in)	10.2 cm (4.0 in)	20 years	21 of 100 (Routine)

Climate Trend

14 complete years, 1910 to 1931

One stripe for each of 14 complete years at Ft Ripley, 1910 to 1931. Blue stripes are years cooler than the station's own mean of 4.4 C (39.9 F); red stripes are warmer. The coolest year was 1917, at 2.4 C (36.3 F), and the warmest was 1931, at 7.0 C (44.5 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Ft Ripley as warming stripes, 1910 to 1931
Year	Annual mean temperature	Difference from the station mean
1910	5.4 C	+0.95 C
1911	4.7 C	+0.24 C
1912	3.2 C	-1.19 C
1913	4.5 C	+0.08 C
1914	4.1 C	-0.33 C
1915	4.5 C	+0.08 C
1916	2.6 C	-1.85 C
1917	2.4 C	-2.04 C
1920	4.2 C	-0.17 C
1921	6.0 C	+1.63 C
1924	3.8 C	-0.57 C
1926	4.9 C	+0.51 C
1928	4.5 C	+0.06 C
1931	7.0 C	+2.54 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

1889 to 1990

Yearly extremes at Ft Ripley: 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)	1917	36.1 C (97.0 F)	27
Coldest night (TNn)	-46.1 C (-51.0 F)	1912	-34.4 C (-29.9 F)	27
Wettest day (Rx1day)	275.3 mm (10.8 in)	1972	50.3 mm (2.0 in)	91
Wettest five days (Rx5day)	309.7 mm (12.2 in)	1972	72.4 mm (2.9 in)	91
Longest dry spell (CDD)	63 days	1913	29 days	91

Hottest day (TXx)

The hottest day of the year at Ft Ripley, 1889 to 1990. The record is 40.0 C (104.0 F) in 1917, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Ft Ripley by year
Year	Hottest day (TXx)
1889	n/a
1890	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1906	36.1 C (97.0 F)
1907	33.9 C (93.0 F)
1908	37.2 C (99.0 F)
1909	33.3 C (91.9 F)
1910	36.7 C (98.1 F)
1911	36.7 C (98.1 F)
1912	36.7 C (98.1 F)
1913	36.7 C (98.1 F)
1914	36.1 C (97.0 F)
1915	31.7 C (89.1 F)
1916	35.6 C (96.1 F)
1917	40.0 C (104.0 F)
1918	37.2 C (99.0 F)
1919	36.7 C (98.1 F)
1920	34.4 C (93.9 F)
1921	38.3 C (100.9 F)
1922	36.7 C (98.1 F)
1923	36.7 C (98.1 F)
1924	32.8 C (91.0 F)
1925	35.6 C (96.1 F)
1926	31.7 C (89.1 F)
1927	30.6 C (87.1 F)
1928	32.2 C (90.0 F)
1929	23.9 C (75.0 F)
1930	36.1 C (97.0 F)
1931	39.4 C (102.9 F)
1932	37.8 C (100.0 F)
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
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 Ft Ripley, 1889 to 1990. The record is -46.1 C (-51.0 F) in 1912, marked on the chart; the median year is -34.4 C (-29.9 F).

Coldest night (TNn) at Ft Ripley by year
Year	Coldest night (TNn)
1889	n/a
1890	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1906	-31.7 C (-25.1 F)
1907	-17.8 C (0.0 F)
1908	-23.3 C (-9.9 F)
1909	-31.7 C (-25.1 F)
1910	-40.0 C (-40.0 F)
1911	-35.6 C (-32.1 F)
1912	-46.1 C (-51.0 F)
1913	-34.4 C (-29.9 F)
1914	-40.0 C (-40.0 F)
1915	-42.8 C (-45.0 F)
1916	-41.7 C (-43.1 F)
1917	-41.7 C (-43.1 F)
1918	-38.9 C (-38.0 F)
1919	-34.4 C (-29.9 F)
1920	-33.3 C (-27.9 F)
1921	-37.8 C (-36.0 F)
1922	-42.8 C (-45.0 F)
1923	-31.7 C (-25.1 F)
1924	-37.2 C (-35.0 F)
1925	-31.1 C (-24.0 F)
1926	-31.7 C (-25.1 F)
1927	-34.4 C (-29.9 F)
1928	-32.8 C (-27.0 F)
1929	-37.8 C (-36.0 F)
1930	-33.3 C (-27.9 F)
1931	-25.6 C (-14.1 F)
1932	-33.9 C (-29.0 F)
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
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 Ft Ripley, 1889 to 1990. The record is 275.3 mm (10.8 in) in 1972, marked on the chart; the median year is 50.3 mm (2.0 in).

Wettest day (Rx1day) at Ft Ripley by year
Year	Wettest day (Rx1day)
1889	25.1 mm (1.0 in)
1890	35.8 mm (1.4 in)
1892	34.3 mm (1.4 in)
1893	67.3 mm (2.6 in)
1894	40.6 mm (1.6 in)
1895	69.3 mm (2.7 in)
1906	63.5 mm (2.5 in)
1907	47.0 mm (1.9 in)
1908	44.7 mm (1.8 in)
1909	35.1 mm (1.4 in)
1910	29.5 mm (1.2 in)
1911	45.7 mm (1.8 in)
1912	50.3 mm (2.0 in)
1913	54.1 mm (2.1 in)
1914	7.4 mm (0.29 in)
1915	49.5 mm (1.9 in)
1916	50.8 mm (2.0 in)
1917	43.2 mm (1.7 in)
1918	22.9 mm (0.9 in)
1919	40.6 mm (1.6 in)
1920	38.1 mm (1.5 in)
1921	50.8 mm (2.0 in)
1922	24.1 mm (0.9 in)
1923	50.8 mm (2.0 in)
1924	44.2 mm (1.7 in)
1925	48.3 mm (1.9 in)
1926	34.5 mm (1.4 in)
1927	36.8 mm (1.4 in)
1928	41.9 mm (1.6 in)
1929	27.9 mm (1.1 in)
1930	38.9 mm (1.5 in)
1931	50.8 mm (2.0 in)
1932	42.7 mm (1.7 in)
1933	35.6 mm (1.4 in)
1934	39.4 mm (1.6 in)
1935	54.6 mm (2.1 in)
1936	23.6 mm (0.9 in)
1937	47.8 mm (1.9 in)
1938	50.8 mm (2.0 in)
1939	60.5 mm (2.4 in)
1940	53.8 mm (2.1 in)
1941	80.0 mm (3.1 in)
1942	96.0 mm (3.8 in)
1943	56.6 mm (2.2 in)
1944	69.1 mm (2.7 in)
1945	101.1 mm (4.0 in)
1946	95.3 mm (3.8 in)
1947	50.3 mm (2.0 in)
1948	48.0 mm (1.9 in)
1949	48.3 mm (1.9 in)
1950	50.8 mm (2.0 in)
1951	54.4 mm (2.1 in)
1952	46.7 mm (1.8 in)
1953	137.2 mm (5.4 in)
1954	46.2 mm (1.8 in)
1955	140.2 mm (5.5 in)
1956	64.0 mm (2.5 in)
1957	45.7 mm (1.8 in)
1958	36.8 mm (1.4 in)
1959	66.5 mm (2.6 in)
1960	28.7 mm (1.1 in)
1961	47.8 mm (1.9 in)
1962	58.4 mm (2.3 in)
1963	63.8 mm (2.5 in)
1964	63.2 mm (2.5 in)
1965	55.9 mm (2.2 in)
1966	41.7 mm (1.6 in)
1967	53.8 mm (2.1 in)
1968	71.4 mm (2.8 in)
1969	39.9 mm (1.6 in)
1970	34.8 mm (1.4 in)
1971	58.7 mm (2.3 in)
1972	275.3 mm (10.8 in)
1973	57.4 mm (2.3 in)
1974	43.7 mm (1.7 in)
1975	33.5 mm (1.3 in)
1976	38.1 mm (1.5 in)
1977	60.2 mm (2.4 in)
1978	127.0 mm (5.0 in)
1979	62.2 mm (2.4 in)
1980	55.9 mm (2.2 in)
1981	50.8 mm (2.0 in)
1982	39.4 mm (1.6 in)
1983	34.3 mm (1.4 in)
1984	53.3 mm (2.1 in)
1985	50.8 mm (2.0 in)
1986	81.3 mm (3.2 in)
1987	52.3 mm (2.1 in)
1988	72.4 mm (2.9 in)
1989	67.3 mm (2.6 in)
1990	36.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ft Ripley, 1889 to 1990. The record is 309.7 mm (12.2 in) in 1972, marked on the chart; the median year is 72.4 mm (2.9 in).

Wettest five days (Rx5day) at Ft Ripley by year
Year	Wettest five days (Rx5day)
1889	40.4 mm (1.6 in)
1890	54.1 mm (2.1 in)
1892	55.4 mm (2.2 in)
1893	83.3 mm (3.3 in)
1894	99.8 mm (3.9 in)
1895	109.3 mm (4.3 in)
1906	100.9 mm (4.0 in)
1907	53.9 mm (2.1 in)
1908	97.5 mm (3.8 in)
1909	62.2 mm (2.4 in)
1910	53.4 mm (2.1 in)
1911	67.9 mm (2.7 in)
1912	82.8 mm (3.3 in)
1913	70.6 mm (2.8 in)
1914	10.4 mm (0.4 in)
1915	64.7 mm (2.5 in)
1916	69.2 mm (2.7 in)
1917	64.6 mm (2.5 in)
1918	39.4 mm (1.6 in)
1919	60.5 mm (2.4 in)
1920	76.6 mm (3.0 in)
1921	68.0 mm (2.7 in)
1922	49.8 mm (2.0 in)
1923	66.5 mm (2.6 in)
1924	61.7 mm (2.4 in)
1925	65.7 mm (2.6 in)
1926	88.4 mm (3.5 in)
1927	40.6 mm (1.6 in)
1928	70.0 mm (2.8 in)
1929	44.7 mm (1.8 in)
1930	57.9 mm (2.3 in)
1931	72.4 mm (2.9 in)
1932	47.7 mm (1.9 in)
1933	51.4 mm (2.0 in)
1934	60.2 mm (2.4 in)
1935	104.4 mm (4.1 in)
1936	46.5 mm (1.8 in)
1937	81.0 mm (3.2 in)
1938	126.5 mm (5.0 in)
1939	73.5 mm (2.9 in)
1940	84.3 mm (3.3 in)
1941	111.9 mm (4.4 in)
1942	105.1 mm (4.1 in)
1943	107.4 mm (4.2 in)
1944	118.2 mm (4.7 in)
1945	101.1 mm (4.0 in)
1946	147.5 mm (5.8 in)
1947	56.7 mm (2.2 in)
1948	64.0 mm (2.5 in)
1949	90.0 mm (3.5 in)
1950	62.7 mm (2.5 in)
1951	54.9 mm (2.2 in)
1952	102.1 mm (4.0 in)
1953	163.9 mm (6.5 in)
1954	53.5 mm (2.1 in)
1955	141.5 mm (5.6 in)
1956	108.5 mm (4.3 in)
1957	108.1 mm (4.3 in)
1958	59.4 mm (2.3 in)
1959	81.3 mm (3.2 in)
1960	38.4 mm (1.5 in)
1961	56.8 mm (2.2 in)
1962	76.0 mm (3.0 in)
1963	157.6 mm (6.2 in)
1964	76.2 mm (3.0 in)
1965	91.2 mm (3.6 in)
1966	54.6 mm (2.1 in)
1967	59.2 mm (2.3 in)
1968	100.3 mm (3.9 in)
1969	65.0 mm (2.6 in)
1970	77.9 mm (3.1 in)
1971	118.8 mm (4.7 in)
1972	309.7 mm (12.2 in)
1973	72.9 mm (2.9 in)
1974	74.9 mm (2.9 in)
1975	72.4 mm (2.9 in)
1976	49.5 mm (1.9 in)
1977	96.0 mm (3.8 in)
1978	179.8 mm (7.1 in)
1979	79.5 mm (3.1 in)
1980	60.7 mm (2.4 in)
1981	66.3 mm (2.6 in)
1982	104.4 mm (4.1 in)
1983	60.2 mm (2.4 in)
1984	166.4 mm (6.6 in)
1985	78.8 mm (3.1 in)
1986	88.9 mm (3.5 in)
1987	60.2 mm (2.4 in)
1988	85.6 mm (3.4 in)
1989	96.5 mm (3.8 in)
1990	60.9 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ft Ripley, 1889 to 1990. The record is 63 days in 1913, marked on the chart; the median year is 29 days.

Longest dry spell (CDD) at Ft Ripley by year
Year	Longest dry spell (CDD)
1889	30 days
1890	24 days
1892	32 days
1893	28 days
1894	23 days
1895	44 days
1906	37 days
1907	40 days
1908	31 days
1909	29 days
1910	40 days
1911	40 days
1912	41 days
1913	63 days
1914	18 days
1915	23 days
1916	17 days
1917	31 days
1918	27 days
1919	18 days
1920	31 days
1921	28 days
1922	19 days
1923	34 days
1924	37 days
1925	39 days
1926	36 days
1927	20 days
1928	23 days
1929	20 days
1930	29 days
1931	37 days
1932	22 days
1933	22 days
1934	27 days
1935	19 days
1936	33 days
1937	20 days
1938	44 days
1939	31 days
1940	16 days
1941	34 days
1942	30 days
1943	21 days
1944	36 days
1945	30 days
1946	21 days
1947	18 days
1948	24 days
1949	30 days
1950	34 days
1951	12 days
1952	63 days
1953	25 days
1954	24 days
1955	22 days
1956	23 days
1957	29 days
1958	43 days
1959	30 days
1960	34 days
1961	54 days
1962	20 days
1963	22 days
1964	28 days
1965	22 days
1966	33 days
1967	20 days
1968	40 days
1969	30 days
1970	35 days
1971	15 days
1972	27 days
1973	41 days
1974	24 days
1975	21 days
1976	37 days
1977	19 days
1978	21 days
1979	24 days
1980	31 days
1981	31 days
1982	18 days
1983	30 days
1984	28 days
1985	22 days
1986	28 days
1987	51 days
1988	33 days
1989	31 days
1990	19 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

64 years, 1889 to 1989

A day with at least 45.7 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 178.6 mm (7.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Ft Ripley: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.7 mm (1.8 in)
5 years	64.6 mm (2.5 in)
10 years	82.0 mm (3.2 in)
25 years	111.7 mm (4.4 in)
50 years	141.2 mm (5.6 in)
100 years	178.6 mm (7.0 in)	Longer than the 64 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, 64 years of values from 1889 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: 275.3 mm (10.8 in) in 1972; 140.2 mm (5.5 in) in 1955; 127.0 mm (5.0 in) in 1978.

Download the Data

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