Island Lake Rsvr Weather Records (USC00214096)

Record envelope, standing records and threshold days for Island Lake Rsvr (USC00214096), Minnesota, United States, with 48 years of record.

Key Facts for Island Lake Rsvr

Island Lake Rsvr (USC00214096) is a weather station in Minnesota, United States at 46.98 latitude and -92.23 longitude, 418 m (1,372 ft) above sea level.
The station reports from 1948 to 1995, 48 years of record.
1,464 records set at Island Lake Rsvr still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Island Lake Rsvr set a daily record precipitation of 44.5 mm (1.8 in) on 30 September 1995.

About the Station

Location: Minnesota, United States, 46.98 latitude, -92.23 longitude.
Elevation: 418 m (1,372 ft).
Period of record: 1948 to 1995, 48 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 Island Lake Rsvr. 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 Island Lake Rsvr, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	7.8 C (46.0 F)	-40.0 C (-40.0 F)	n/a	n/a
Feb	5.0 C (41.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Mar	6.7 C (44.1 F)	-30.6 C (-23.1 F)	n/a	n/a
Apr	22.2 C (72.0 F)	-19.4 C (-2.9 F)	n/a	n/a
May	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Jul	35.6 C (96.1 F)	2.2 C (36.0 F)	n/a	n/a
Aug	34.4 C (93.9 F)	2.2 C (36.0 F)	n/a	n/a
Sep	23.9 C (75.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	25.6 C (78.1 F)	-13.3 C (8.1 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	3.9 C (39.0 F)	-32.2 C (-26.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Island Lake Rsvr still stand. 1972 holds the most, with 363.

Wettest Day of Each Month

Jun: 90.9 mm (3.6 in)

The wettest day on record for each calendar month at Island Lake Rsvr. The most was 90.9 mm (3.6 in) on 23 June 1964.

Record daily precipitation for each month at Island Lake Rsvr
Month	Record daily precipitation (mm)	Date
Jan	31.0 mm (1.2 in)	6 January 1994
Feb	27.4 mm (1.1 in)	27 February 1971
Mar	36.6 mm (1.4 in)	12 March 1977
Apr	38.9 mm (1.5 in)	24 April 1960
May	66.0 mm (2.6 in)	10 May 1979
Jun	90.9 mm (3.6 in)	23 June 1964
Jul	80.8 mm (3.2 in)	30 July 1955
Aug	84.8 mm (3.3 in)	30 August 1951
Sep	80.0 mm (3.1 in)	7 September 1964
Oct	67.3 mm (2.6 in)	1 October 1950
Nov	41.9 mm (1.6 in)	2 November 1991
Dec	33.0 mm (1.3 in)	18 December 1977

Period of Record Coverage

1963 to 1975

10 years of record at Island Lake Rsvr, 1963 to 1975. 8 years have data for under 90 percent of days and are left out of rankings: 1963, 1966, 1967, 1969, 1970, 1973, 1974, 1975.

Days with data per year at Island Lake Rsvr
Year	Days with data	Share of year	Complete
1963	62	17%	No
1966	1	0%	No
1967	8	2%	No
1969	154	42%	No
1970	62	17%	No
1971	335	92%	Yes
1972	365	100%	Yes
1973	209	57%	No
1974	253	69%	No
1975	175	48%	No

Latest Records

Latest records at Island Lake Rsvr
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1995	Island Lake Rsvr, US	daily rain	44.5 mm (1.8 in)	5.4 mm (0.21 in)	29 years	17 of 100 (Routine)
24 August 1995	Island Lake Rsvr, US	daily rain	54.6 mm (2.1 in)	32.0 mm (1.3 in)	36 years	42 of 100 (Notable)
18 August 1995	Island Lake Rsvr, US	daily rain	50.3 mm (2.0 in)	6.4 mm (0.25 in)	24 years	16 of 100 (Routine)
17 July 1995	Island Lake Rsvr, US	daily rain	60.2 mm (2.4 in)	2.0 mm (0.08 in)	8 years	7 of 100 (Routine)
12 July 1995	Island Lake Rsvr, US	daily rain	12.7 mm (0.5 in)	0.3 mm (0.01 in)	10 years	7 of 100 (Routine)
14 May 1995	Island Lake Rsvr, US	daily rain	32.0 mm (1.3 in)	4.6 mm (0.18 in)	38 years	20 of 100 (Routine)
18 April 1995	Island Lake Rsvr, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	34 years	26 of 100 (Routine)
11 April 1995	Island Lake Rsvr, US	daily rain	10.7 mm (0.4 in)	4.6 mm (0.18 in)	29 years	18 of 100 (Routine)
14 February 1995	Island Lake Rsvr, US	daily snowfall	23.4 cm (9.2 in)	11.2 cm (4.4 in)	32 years	46 of 100 (Notable)
14 February 1995	Island Lake Rsvr, US	daily rain	14.5 mm (0.6 in)	4.8 mm (0.19 in)	32 years	20 of 100 (Routine)
25 August 1994	Island Lake Rsvr, US	daily rain	43.2 mm (1.7 in)	21.6 mm (0.9 in)	11 years	25 of 100 (Routine)
5 July 1994	Island Lake Rsvr, US	daily rain	25.4 mm (1.0 in)	13.2 mm (0.5 in)	28 years	23 of 100 (Routine)
22 June 1994	Island Lake Rsvr, US	daily rain	30.7 mm (1.2 in)	13.4 mm (0.5 in)	44 years	29 of 100 (Routine)
19 June 1994	Island Lake Rsvr, US	daily rain	35.6 mm (1.4 in)	14.3 mm (0.6 in)	31 years	26 of 100 (Routine)
28 April 1994	Island Lake Rsvr, US	daily snowfall	15.2 cm (6.0 in)	12.2 cm (4.8 in)	28 years	37 of 100 (Notable)
28 April 1994	Island Lake Rsvr, US	daily snow depth	15.2 cm (6.0 in)	5.0 cm (2.0 in)	28 years	14 of 100 (Routine)
26 April 1994	Island Lake Rsvr, US	daily rain	19.1 mm (0.8 in)	0.8 mm (0.03 in)	8 years	7 of 100 (Routine)
25 April 1994	Island Lake Rsvr, US	daily rain	25.4 mm (1.0 in)	6.9 mm (0.27 in)	4 years	15 of 100 (Routine)
17 April 1994	Island Lake Rsvr, US	daily rain	19.6 mm (0.8 in)	11.0 mm (0.4 in)	44 years	20 of 100 (Routine)
21 March 1994	Island Lake Rsvr, US	daily snowfall	20.3 cm (8.0 in)	3.8 cm (1.5 in)	27 years	19 of 100 (Routine)

Extremes by Year

1948 to 1995

Yearly extremes at Island Lake Rsvr: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1973	30.9 C (87.5 F)	10
Coldest night (TNn)	-40.0 C (-40.0 F)	1972	-34.4 C (-29.9 F)	10
Wettest day (Rx1day)	90.9 mm (3.6 in)	1964	52.6 mm (2.1 in)	48
Wettest five days (Rx5day)	157.0 mm (6.2 in)	1951	77.8 mm (3.1 in)	48
Longest dry spell (CDD)	39 days	1957	23 days	48

Hottest day (TXx)

The hottest day of the year at Island Lake Rsvr, 1948 to 1995. The record is 35.6 C (96.1 F) in 1973, marked on the chart; the median year is 30.9 C (87.5 F).

Hottest day (TXx) at Island Lake Rsvr by year
Year	Hottest day (TXx)
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	25.6 C (78.1 F)
1964	n/a
1965	n/a
1966	8.3 C (46.9 F)
1967	0.6 C (33.1 F)
1968	n/a
1969	32.2 C (90.0 F)
1970	33.3 C (91.9 F)
1971	31.1 C (88.0 F)
1972	30.6 C (87.1 F)
1973	35.6 C (96.1 F)
1974	28.3 C (82.9 F)
1975	35.6 C (96.1 F)
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
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a

Coldest night (TNn)

The coldest night of the year at Island Lake Rsvr, 1948 to 1995. The record is -40.0 C (-40.0 F) in 1972, marked on the chart; the median year is -34.4 C (-29.9 F).

Coldest night (TNn) at Island Lake Rsvr by year
Year	Coldest night (TNn)
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	-38.3 C (-36.9 F)
1964	n/a
1965	n/a
1966	-0.6 C (30.9 F)
1967	-21.1 C (-6.0 F)
1968	n/a
1969	-23.9 C (-11.0 F)
1970	-34.4 C (-29.9 F)
1971	-34.4 C (-29.9 F)
1972	-40.0 C (-40.0 F)
1973	-35.0 C (-31.0 F)
1974	-36.1 C (-33.0 F)
1975	-23.3 C (-9.9 F)
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
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a

Wettest day (Rx1day)

The wettest day of the year at Island Lake Rsvr, 1948 to 1995. The record is 90.9 mm (3.6 in) in 1964, marked on the chart; the median year is 52.6 mm (2.1 in).

Wettest day (Rx1day) at Island Lake Rsvr by year
Year	Wettest day (Rx1day)
1948	30.5 mm (1.2 in)
1949	54.1 mm (2.1 in)
1950	67.3 mm (2.6 in)
1951	84.8 mm (3.3 in)
1952	57.4 mm (2.3 in)
1953	63.8 mm (2.5 in)
1954	48.3 mm (1.9 in)
1955	80.8 mm (3.2 in)
1956	49.0 mm (1.9 in)
1957	55.9 mm (2.2 in)
1958	67.8 mm (2.7 in)
1959	52.3 mm (2.1 in)
1960	40.1 mm (1.6 in)
1961	68.3 mm (2.7 in)
1962	45.5 mm (1.8 in)
1963	30.0 mm (1.2 in)
1964	90.9 mm (3.6 in)
1965	41.1 mm (1.6 in)
1966	52.8 mm (2.1 in)
1967	43.9 mm (1.7 in)
1968	57.7 mm (2.3 in)
1969	36.8 mm (1.4 in)
1970	32.5 mm (1.3 in)
1971	49.0 mm (1.9 in)
1972	56.1 mm (2.2 in)
1973	77.0 mm (3.0 in)
1974	38.9 mm (1.5 in)
1975	37.8 mm (1.5 in)
1976	34.3 mm (1.4 in)
1977	53.8 mm (2.1 in)
1978	76.2 mm (3.0 in)
1979	66.0 mm (2.6 in)
1980	59.7 mm (2.4 in)
1981	52.3 mm (2.1 in)
1982	41.7 mm (1.6 in)
1983	44.5 mm (1.8 in)
1984	44.2 mm (1.7 in)
1985	48.0 mm (1.9 in)
1986	68.3 mm (2.7 in)
1987	58.2 mm (2.3 in)
1988	59.4 mm (2.3 in)
1989	39.1 mm (1.5 in)
1990	53.1 mm (2.1 in)
1991	46.5 mm (1.8 in)
1992	55.9 mm (2.2 in)
1993	44.5 mm (1.8 in)
1994	43.2 mm (1.7 in)
1995	60.2 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Island Lake Rsvr, 1948 to 1995. The record is 157.0 mm (6.2 in) in 1951, marked on the chart; the median year is 77.8 mm (3.1 in).

Wettest five days (Rx5day) at Island Lake Rsvr by year
Year	Wettest five days (Rx5day)
1948	33.5 mm (1.3 in)
1949	110.8 mm (4.4 in)
1950	70.1 mm (2.8 in)
1951	157.0 mm (6.2 in)
1952	107.1 mm (4.2 in)
1953	121.2 mm (4.8 in)
1954	60.0 mm (2.4 in)
1955	119.9 mm (4.7 in)
1956	64.2 mm (2.5 in)
1957	103.1 mm (4.1 in)
1958	73.8 mm (2.9 in)
1959	72.5 mm (2.9 in)
1960	56.2 mm (2.2 in)
1961	86.7 mm (3.4 in)
1962	66.4 mm (2.6 in)
1963	61.5 mm (2.4 in)
1964	109.6 mm (4.3 in)
1965	61.9 mm (2.4 in)
1966	73.5 mm (2.9 in)
1967	85.8 mm (3.4 in)
1968	94.8 mm (3.7 in)
1969	48.0 mm (1.9 in)
1970	82.8 mm (3.3 in)
1971	101.8 mm (4.0 in)
1972	79.2 mm (3.1 in)
1973	137.5 mm (5.4 in)
1974	51.6 mm (2.0 in)
1975	75.6 mm (3.0 in)
1976	61.5 mm (2.4 in)
1977	71.1 mm (2.8 in)
1978	77.5 mm (3.1 in)
1979	87.3 mm (3.4 in)
1980	89.7 mm (3.5 in)
1981	67.0 mm (2.6 in)
1982	68.8 mm (2.7 in)
1983	76.8 mm (3.0 in)
1984	99.2 mm (3.9 in)
1985	78.0 mm (3.1 in)
1986	80.8 mm (3.2 in)
1987	109.5 mm (4.3 in)
1988	103.4 mm (4.1 in)
1989	57.4 mm (2.3 in)
1990	67.8 mm (2.7 in)
1991	90.9 mm (3.6 in)
1992	72.1 mm (2.8 in)
1993	85.4 mm (3.4 in)
1994	71.4 mm (2.8 in)
1995	92.7 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Island Lake Rsvr, 1948 to 1995. The record is 39 days in 1957, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Island Lake Rsvr by year
Year	Longest dry spell (CDD)
1948	20 days
1949	35 days
1950	16 days
1951	18 days
1952	31 days
1953	24 days
1954	17 days
1955	17 days
1956	16 days
1957	39 days
1958	32 days
1959	28 days
1960	36 days
1961	29 days
1962	26 days
1963	22 days
1964	30 days
1965	22 days
1966	18 days
1967	22 days
1968	35 days
1969	31 days
1970	23 days
1971	16 days
1972	26 days
1973	27 days
1974	20 days
1975	21 days
1976	36 days
1977	28 days
1978	20 days
1979	20 days
1980	31 days
1981	31 days
1982	21 days
1983	14 days
1984	28 days
1985	22 days
1986	18 days
1987	23 days
1988	19 days
1989	21 days
1990	30 days
1991	21 days
1992	30 days
1993	24 days
1994	17 days
1995	15 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

44 years, 1949 to 1992

A day with at least 52.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 96.3 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Island Lake Rsvr: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	52.3 mm (2.1 in)
5 years	65.3 mm (2.6 in)
10 years	73.4 mm (2.9 in)
25 years	83.1 mm (3.3 in)
50 years	89.9 mm (3.5 in)	Longer than the 44 years of record
100 years	96.3 mm (3.8 in)	Longer than the 44 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, 44 years of values from 1949 to 1992.

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: 90.9 mm (3.6 in) in 1964; 84.8 mm (3.3 in) in 1951; 80.8 mm (3.2 in) in 1955.

Download the Data

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