Orwell Dam Weather Records (USC00216228)

Record envelope, standing records and threshold days for Orwell Dam (USC00216228), Minnesota, United States, with 56 years of record.

Key Facts for Orwell Dam

Orwell Dam (USC00216228) is a weather station in Minnesota, United States at 46.22 latitude and -96.18 longitude, 331 m (1,086 ft) above sea level.
The station reports from 1971 to 2026, 56 years of record.
1,464 records set at Orwell Dam still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Orwell Dam set a daily record precipitation of 36.8 mm (1.4 in) on 4 June 2026.

About the Station

Location: Minnesota, United States, 46.22 latitude, -96.18 longitude.
Elevation: 331 m (1,086 ft).
Period of record: 1971 to 2026, 56 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

2 days at or beyond a record

The band shows the record high and record low for each calendar day at Orwell Dam. The lines show the 2026 daily maximum and minimum. 2 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Orwell Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.3 C (55.9 F)	-40.0 C (-40.0 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-41.1 C (-42.0 F)	n/a	n/a
Mar	23.9 C (75.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-15.6 C (3.9 F)	n/a	n/a
May	33.9 C (93.0 F)	-5.6 C (21.9 F)	21.7 C (71.1 F)	-3.3 C (26.1 F)
Jun	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	6.1 C (43.0 F)	n/a	n/a
Aug	41.7 C (107.1 F)	3.3 C (37.9 F)	n/a	n/a
Sep	36.7 C (98.1 F)	-10.6 C (12.9 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-30.0 C (-22.0 F)	n/a	n/a
Dec	13.3 C (55.9 F)	-36.1 C (-33.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Orwell Dam still stand. 1972 holds the most, with 53.

Standing records at Orwell Dam by the year they were set
Year set	Standing records
1971	16
1972	53
1973	48
1974	40
1976	5
1979	33
1980	11
1981	24
1982	33
1983	50
1984	26
1985	33
1986	29
1987	22
1988	29
1989	46
1990	52
1991	45
1992	41
1993	31
1994	17
1995	24
1996	35
1997	32
1998	34
1999	13
2000	32
2001	25
2002	28
2003	27
2004	38
2005	36
2006	29
2007	40
2008	24
2009	32
2010	18
2011	17
2012	37
2013	16
2014	41
2015	28
2017	17
2018	24
2019	15
2020	34
2021	49
2022	29
2024	4
2026	2

Wettest Day of Each Month

Sep: 121.9 mm (4.8 in)

The wettest day on record for each calendar month at Orwell Dam. The most was 121.9 mm (4.8 in) on 7 September 2004.

Record daily precipitation for each month at Orwell Dam
Month	Record daily precipitation (mm)	Date
Jan	47.0 mm (1.9 in)	6 January 1997
Feb	21.6 mm (0.9 in)	12 February 2013
Mar	36.8 mm (1.4 in)	23 March 2009
Apr	67.3 mm (2.6 in)	7 April 1997
May	66.0 mm (2.6 in)	18 May 2015
Jun	78.0 mm (3.1 in)	8 June 1984
Jul	81.8 mm (3.2 in)	12 July 1972
Aug	95.8 mm (3.8 in)	7 August 1992
Sep	121.9 mm (4.8 in)	7 September 2004
Oct	68.6 mm (2.7 in)	1 October 1995
Nov	43.2 mm (1.7 in)	19 November 2024
Dec	26.7 mm (1.1 in)	30 December 2009

Period of Record Coverage

1971 to 2026

51 years of record at Orwell Dam, 1971 to 2026. 45 years have data for under 90 percent of days and are left out of rankings: 1971, 1972, 1973, 1974, 1976, 1979, 1980, 1981 and others.

Days with data per year at Orwell Dam
Year	Days with data	Share of year	Complete
1971	166	45%	No
1972	293	80%	No
1973	280	77%	No
1974	254	70%	No
1976	25	7%	No
1979	210	58%	No
1980	131	36%	No
1981	151	41%	No
1982	335	92%	Yes
1983	345	95%	Yes
1984	201	55%	No
1985	197	54%	No
1986	190	52%	No
1987	196	54%	No
1988	190	52%	No
1989	230	63%	No
1990	237	65%	No
1991	235	64%	No
1992	240	66%	No
1993	223	61%	No
1994	217	59%	No
1995	214	59%	No
1996	205	56%	No
1997	195	53%	No
1998	205	56%	No
1999	183	50%	No
2000	211	58%	No
2001	230	63%	No
2002	189	52%	No
2003	219	60%	No
2004	213	58%	No
2005	225	62%	No
2006	198	54%	No
2007	222	61%	No
2008	194	53%	No
2009	191	52%	No
2010	231	63%	No
2011	208	57%	No
2012	208	57%	No
2013	182	50%	No
2014	227	62%	No
2015	186	51%	No
2017	163	45%	No
2018	212	58%	No
2019	341	93%	Yes
2020	366	100%	Yes
2021	364	100%	Yes
2022	330	90%	Yes
2024	41	11%	No
2025	3	1%	No
2026	2	1%	No

Latest Records

Latest records at Orwell Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 June 2026	Orwell Dam, US	daily rain	36.8 mm (1.4 in)	21.1 mm (0.8 in)	40 years	32 of 100 (Routine)
12 May 2026	Orwell Dam, US	daily low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	5 years	8 of 100 (Routine)
1 May 2026	Orwell Dam, US	daily low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	29 years	15 of 100 (Routine)
27 April 2026	Orwell Dam, US	daily rain	23.1 mm (0.9 in)	9.9 mm (0.39 in)	52 years	20 of 100 (Routine)
10 December 2025	Orwell Dam, US	daily rain	6.4 mm (0.25 in)	3.9 mm (0.15 in)	20 years	20 of 100 (Routine)
26 June 2025	Orwell Dam, US	daily rain	19.1 mm (0.8 in)	3.6 mm (0.14 in)	35 years	17 of 100 (Routine)
13 June 2025	Orwell Dam, US	daily rain	20.3 mm (0.8 in)	3.8 mm (0.15 in)	24 years	14 of 100 (Routine)
20 May 2025	Orwell Dam, US	daily rain	30.5 mm (1.2 in)	12.7 mm (0.5 in)	11 years	20 of 100 (Routine)
3 April 2025	Orwell Dam, US	daily rain	17.8 mm (0.7 in)	5.1 mm (0.20 in)	36 years	20 of 100 (Routine)
10 February 2025	Orwell Dam, US	daily rain	7.6 mm (0.30 in)	3.8 mm (0.15 in)	25 years	20 of 100 (Routine)
6 February 2025	Orwell Dam, US	daily rain	3.8 mm (0.15 in)	1.3 mm (0.05 in)	42 years	20 of 100 (Routine)
19 November 2024	Orwell Dam, US	monthly rain	43.2 mm (1.7 in)	14.0 mm (0.6 in)	18 years	43 of 100 (Notable)
14 November 2024	Orwell Dam, US	daily high min	3.9 C (39.0 F)	2.8 C (5.0 F)	17 years	14 of 100 (Routine)
12 November 2024	Orwell Dam, US	daily high min	0.0 C (32.0 F)	1.1 C (2.0 F)	53 years	21 of 100 (Routine)
28 October 2024	Orwell Dam, US	daily high min	5.6 C (42.1 F)	1.2 C (2.2 F)	42 years	19 of 100 (Routine)
10 October 2024	Orwell Dam, US	daily high max	28.3 C (82.9 F)	0.5 C (0.9 F)	14 years	9 of 100 (Routine)
16 November 2022	Orwell Dam, US	daily low max	-7.2 C (19.0 F)	3.3 C (5.9 F)	21 years	15 of 100 (Routine)
15 November 2022	Orwell Dam, US	daily low max	-5.0 C (23.0 F)	2.8 C (5.0 F)	36 years	19 of 100 (Routine)
11 November 2022	Orwell Dam, US	daily rain	7.6 mm (0.30 in)	4.6 mm (0.18 in)	20 years	18 of 100 (Routine)
17 October 2022	Orwell Dam, US	daily low max	2.2 C (36.0 F)	1.1 C (2.0 F)	1 year	6 of 100 (Routine)

Extremes by Year

1971 to 2026

Yearly extremes at Orwell Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	2003	35.0 C (95.0 F)	51
Coldest night (TNn)	-41.1 C (-42.0 F)	1996	-31.7 C (-25.1 F)	51
Wettest day (Rx1day)	121.9 mm (4.8 in)	2004	55.9 mm (2.2 in)	51
Wettest five days (Rx5day)	137.9 mm (5.4 in)	1984	76.2 mm (3.0 in)	51
Longest dry spell (CDD)	56 days	1999	25 days	51

Hottest day (TXx)

The hottest day of the year at Orwell Dam, 1971 to 2026. The record is 41.7 C (107.1 F) in 2003, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Orwell Dam by year
Year	Hottest day (TXx)
1971	36.1 C (97.0 F)
1972	34.4 C (93.9 F)
1973	36.1 C (97.0 F)
1974	36.7 C (98.1 F)
1976	7.8 C (46.0 F)
1979	35.0 C (95.0 F)
1980	36.7 C (98.1 F)
1981	27.8 C (82.0 F)
1982	36.1 C (97.0 F)
1983	38.3 C (100.9 F)
1984	36.7 C (98.1 F)
1985	36.7 C (98.1 F)
1986	33.9 C (93.0 F)
1987	34.4 C (93.9 F)
1988	40.6 C (105.1 F)
1989	35.6 C (96.1 F)
1990	34.4 C (93.9 F)
1991	36.1 C (97.0 F)
1992	33.9 C (93.0 F)
1993	33.3 C (91.9 F)
1994	35.0 C (95.0 F)
1995	36.1 C (97.0 F)
1996	35.0 C (95.0 F)
1997	33.3 C (91.9 F)
1998	34.4 C (93.9 F)
1999	35.0 C (95.0 F)
2000	33.9 C (93.0 F)
2001	35.0 C (95.0 F)
2002	35.6 C (96.1 F)
2003	41.7 C (107.1 F)
2004	37.8 C (100.0 F)
2005	37.8 C (100.0 F)
2006	39.4 C (102.9 F)
2007	37.8 C (100.0 F)
2008	33.3 C (91.9 F)
2009	37.2 C (99.0 F)
2010	35.0 C (95.0 F)
2011	37.2 C (99.0 F)
2012	37.8 C (100.0 F)
2013	37.2 C (99.0 F)
2014	32.2 C (90.0 F)
2015	33.3 C (91.9 F)
2017	35.0 C (95.0 F)
2018	34.4 C (93.9 F)
2019	32.2 C (90.0 F)
2020	33.9 C (93.0 F)
2021	36.7 C (98.1 F)
2022	37.2 C (99.0 F)
2024	28.3 C (82.9 F)
2025	30.6 C (87.1 F)
2026	21.7 C (71.1 F)

Coldest night (TNn)

The coldest night of the year at Orwell Dam, 1971 to 2026. The record is -41.1 C (-42.0 F) in 1996, marked on the chart; the median year is -31.7 C (-25.1 F).

Coldest night (TNn) at Orwell Dam by year
Year	Coldest night (TNn)
1971	-25.6 C (-14.1 F)
1972	-35.6 C (-32.1 F)
1973	-31.1 C (-24.0 F)
1974	-32.2 C (-26.0 F)
1976	-33.3 C (-27.9 F)
1979	-36.1 C (-33.0 F)
1980	-30.0 C (-22.0 F)
1981	-32.2 C (-26.0 F)
1982	-33.3 C (-27.9 F)
1983	-35.0 C (-31.0 F)
1984	-36.7 C (-34.1 F)
1985	-30.6 C (-23.1 F)
1986	-34.4 C (-29.9 F)
1987	-32.8 C (-27.0 F)
1988	-30.6 C (-23.1 F)
1989	-37.2 C (-35.0 F)
1990	-34.4 C (-29.9 F)
1991	-30.6 C (-23.1 F)
1992	-28.3 C (-18.9 F)
1993	-36.1 C (-33.0 F)
1994	-40.0 C (-40.0 F)
1995	-30.0 C (-22.0 F)
1996	-41.1 C (-42.0 F)
1997	-33.3 C (-27.9 F)
1998	-35.0 C (-31.0 F)
1999	-31.7 C (-25.1 F)
2000	-32.2 C (-26.0 F)
2001	-30.0 C (-22.0 F)
2002	-25.0 C (-13.0 F)
2003	-26.7 C (-16.1 F)
2004	-36.1 C (-33.0 F)
2005	-27.2 C (-17.0 F)
2006	-23.3 C (-9.9 F)
2007	-31.1 C (-24.0 F)
2008	-36.1 C (-33.0 F)
2009	-33.3 C (-27.9 F)
2010	-26.1 C (-15.0 F)
2011	-31.1 C (-24.0 F)
2012	-28.3 C (-18.9 F)
2013	-32.2 C (-26.0 F)
2014	-33.3 C (-27.9 F)
2015	-28.9 C (-20.0 F)
2017	-17.2 C (1.0 F)
2018	-28.9 C (-20.0 F)
2019	-30.6 C (-23.1 F)
2020	-31.7 C (-25.1 F)
2021	-33.3 C (-27.9 F)
2022	-33.3 C (-27.9 F)
2024	-23.9 C (-11.0 F)
2025	16.1 C (61.0 F)
2026	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at Orwell Dam, 1971 to 2026. The record is 121.9 mm (4.8 in) in 2004, marked on the chart; the median year is 55.9 mm (2.2 in).

Wettest day (Rx1day) at Orwell Dam by year
Year	Wettest day (Rx1day)
1971	50.5 mm (2.0 in)
1972	81.8 mm (3.2 in)
1973	35.3 mm (1.4 in)
1974	35.1 mm (1.4 in)
1976	1.5 mm (0.06 in)
1979	56.1 mm (2.2 in)
1980	52.8 mm (2.1 in)
1981	15.2 mm (0.6 in)
1982	49.5 mm (1.9 in)
1983	65.5 mm (2.6 in)
1984	78.0 mm (3.1 in)
1985	64.8 mm (2.6 in)
1986	42.2 mm (1.7 in)
1987	24.1 mm (0.9 in)
1988	42.7 mm (1.7 in)
1989	82.6 mm (3.3 in)
1990	66.0 mm (2.6 in)
1991	85.1 mm (3.4 in)
1992	95.8 mm (3.8 in)
1993	39.4 mm (1.6 in)
1994	32.5 mm (1.3 in)
1995	71.9 mm (2.8 in)
1996	61.0 mm (2.4 in)
1997	67.3 mm (2.6 in)
1998	57.2 mm (2.3 in)
1999	69.1 mm (2.7 in)
2000	34.3 mm (1.4 in)
2001	41.9 mm (1.6 in)
2002	47.0 mm (1.9 in)
2003	47.0 mm (1.9 in)
2004	121.9 mm (4.8 in)
2005	76.2 mm (3.0 in)
2006	59.7 mm (2.4 in)
2007	69.6 mm (2.7 in)
2008	48.8 mm (1.9 in)
2009	63.5 mm (2.5 in)
2010	74.7 mm (2.9 in)
2011	45.7 mm (1.8 in)
2012	59.7 mm (2.4 in)
2013	67.3 mm (2.6 in)
2014	55.9 mm (2.2 in)
2015	66.0 mm (2.6 in)
2017	57.2 mm (2.3 in)
2018	73.7 mm (2.9 in)
2019	38.1 mm (1.5 in)
2020	39.6 mm (1.6 in)
2021	50.8 mm (2.0 in)
2022	44.5 mm (1.8 in)
2024	43.2 mm (1.7 in)
2025	40.6 mm (1.6 in)
2026	53.3 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Orwell Dam, 1971 to 2026. The record is 137.9 mm (5.4 in) in 1984, marked on the chart; the median year is 76.2 mm (3.0 in).

Wettest five days (Rx5day) at Orwell Dam by year
Year	Wettest five days (Rx5day)
1971	83.3 mm (3.3 in)
1972	84.9 mm (3.3 in)
1973	55.1 mm (2.2 in)
1974	50.1 mm (2.0 in)
1976	0.0 mm (0.00 in)
1979	67.7 mm (2.7 in)
1980	72.9 mm (2.9 in)
1981	27.3 mm (1.1 in)
1982	80.0 mm (3.1 in)
1983	108.4 mm (4.3 in)
1984	137.9 mm (5.4 in)
1985	106.4 mm (4.2 in)
1986	62.2 mm (2.4 in)
1987	52.1 mm (2.1 in)
1988	47.8 mm (1.9 in)
1989	82.6 mm (3.3 in)
1990	66.0 mm (2.6 in)
1991	86.4 mm (3.4 in)
1992	95.8 mm (3.8 in)
1993	60.6 mm (2.4 in)
1994	83.7 mm (3.3 in)
1995	103.9 mm (4.1 in)
1996	61.5 mm (2.4 in)
1997	76.2 mm (3.0 in)
1998	95.3 mm (3.8 in)
1999	103.4 mm (4.1 in)
2000	54.6 mm (2.1 in)
2001	53.4 mm (2.1 in)
2002	113.1 mm (4.5 in)
2003	83.4 mm (3.3 in)
2004	123.2 mm (4.9 in)
2005	78.7 mm (3.1 in)
2006	72.4 mm (2.9 in)
2007	114.6 mm (4.5 in)
2008	67.9 mm (2.7 in)
2009	88.9 mm (3.5 in)
2010	88.7 mm (3.5 in)
2011	94.0 mm (3.7 in)
2012	61.2 mm (2.4 in)
2013	88.5 mm (3.5 in)
2014	53.7 mm (2.1 in)
2015	66.0 mm (2.6 in)
2017	72.4 mm (2.9 in)
2018	75.0 mm (3.0 in)
2019	76.4 mm (3.0 in)
2020	69.8 mm (2.7 in)
2021	60.3 mm (2.4 in)
2022	69.9 mm (2.8 in)
2024	6.4 mm (0.25 in)
2025	84.6 mm (3.3 in)
2026	90.1 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Orwell Dam, 1971 to 2026. The record is 56 days in 1999, marked on the chart; the median year is 25 days.

Longest dry spell (CDD) at Orwell Dam by year
Year	Longest dry spell (CDD)
1971	22 days
1972	23 days
1973	41 days
1974	23 days
1976	5 days
1979	27 days
1980	30 days
1981	27 days
1982	17 days
1983	22 days
1984	34 days
1985	21 days
1986	17 days
1987	12 days
1988	15 days
1989	25 days
1990	36 days
1991	33 days
1992	27 days
1993	23 days
1994	25 days
1995	18 days
1996	28 days
1997	45 days
1998	29 days
1999	56 days
2000	19 days
2001	30 days
2002	49 days
2003	26 days
2004	26 days
2005	26 days
2006	44 days
2007	33 days
2008	36 days
2009	25 days
2010	26 days
2011	52 days
2012	22 days
2013	22 days
2014	15 days
2015	18 days
2017	13 days
2018	15 days
2019	23 days
2020	20 days
2021	24 days
2022	35 days
2024	6 days
2025	32 days
2026	9 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.

Download the Data

Data for Orwell Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Orwell Dam 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).