Hawarden Weather Records (USC00133718)

Record envelope, standing records and threshold days for Hawarden (USC00133718), Iowa, United States, with 95 years of record.

Key Facts for Hawarden

Hawarden (USC00133718) is a weather station in Iowa, United States at 43.00 latitude and -96.48 longitude, 363 m (1,190 ft) above sea level.
The station reports from 1926 to 2020, 95 years of record.
1,464 records set at Hawarden still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hawarden set a daily record precipitation of 38.1 mm (1.5 in) on 29 March 2020.

About the Station

Location: Iowa, United States, 43.00 latitude, -96.48 longitude.
Elevation: 363 m (1,190 ft).
Period of record: 1926 to 2020, 95 years.
Eligible elements: tmax, tmin, 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 Hawarden. 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 Hawarden, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.0 C (68.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Feb	22.2 C (72.0 F)	-36.1 C (-33.0 F)	n/a	n/a
Mar	32.2 C (90.0 F)	-29.4 C (-20.9 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-18.3 C (-0.9 F)	n/a	n/a
May	39.4 C (102.9 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	41.7 C (107.1 F)	1.7 C (35.1 F)	n/a	n/a
Jul	42.8 C (109.0 F)	4.4 C (39.9 F)	n/a	n/a
Aug	41.7 C (107.1 F)	1.1 C (34.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-6.1 C (21.0 F)	n/a	n/a
Oct	35.6 C (96.1 F)	-13.9 C (7.0 F)	n/a	n/a
Nov	26.7 C (80.1 F)	-28.3 C (-18.9 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-33.9 C (-29.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hawarden still stand. 1955 holds the most, with 35.

Standing records at Hawarden by the year they were set
Year set	Standing records
1937	25
1938	19
1939	34
1940	24
1941	15
1942	26
1943	21
1944	27
1945	23
1946	20
1947	30
1948	23
1949	9
1950	16
1951	16
1952	6
1953	15
1954	15
1955	35
1956	15
1957	9
1958	22
1959	17
1960	15
1961	9
1962	28
1963	21
1964	16
1965	20
1966	18
1967	17
1968	15
1969	12
1970	15
1971	13
1972	22
1973	9
1974	27
1975	19
1976	17
1977	19
1978	9
1979	12
1980	13
1981	13
1982	14
1983	34
1984	16
1985	28
1986	10
1987	23
1988	23
1989	28
1990	28
1991	25
1992	18
1993	19
1994	16
1995	19
1996	19
1997	23
1998	13
1999	12
2000	22
2001	11
2002	15
2003	5
2004	22
2005	10
2006	12
2007	12
2008	11
2009	15
2010	8
2011	8
2012	27
2013	17
2014	18
2015	11
2016	7
2017	14
2018	22
2019	5
2020	3

All-Time Record Progression

9 new records

9 all-time records were set at Hawarden between 8 January 1970 and 11 February 1988. Each dot is a new record.

When Hawarden set new all-time records
Date	Kind	Detail
1970-01-08	Record low maximum temperature	Record low maximum temperature -21.1 C (-6.0 F)
1977-03-02	Record daily snowfall	Record daily snowfall 38.1 cm (15.0 in)
1977-07-05	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)
1982-01-10	Record low maximum temperature	Record low maximum temperature -22.2 C (-8.0 F)
1982-08-02	Record high minimum temperature	Record high minimum temperature 27.2 C (81.0 F)
1983-12-22	Record low maximum temperature	Record low maximum temperature -22.8 C (-9.0 F)
1983-12-23	Record low maximum temperature	Record low maximum temperature -25.0 C (-13.0 F)
1983-12-24	Record low maximum temperature	Record low maximum temperature -25.6 C (-14.1 F)
1988-02-11	Record low minimum temperature	Record low minimum temperature -36.1 C (-33.0 F)

Wettest Day of Each Month

Jun: 192.0 mm (7.6 in)

The wettest day on record for each calendar month at Hawarden. The most was 192.0 mm (7.6 in) on 7 June 1953.

Record daily precipitation for each month at Hawarden
Month	Record daily precipitation (mm)	Date
Jan	27.7 mm (1.1 in)	30 January 2001
Feb	32.8 mm (1.3 in)	28 February 1951
Mar	57.7 mm (2.3 in)	24 March 2017
Apr	65.5 mm (2.6 in)	4 April 2019
May	104.1 mm (4.1 in)	1 May 1972
Jun	192.0 mm (7.6 in)	7 June 1953
Jul	116.1 mm (4.6 in)	21 July 2010
Aug	121.4 mm (4.8 in)	29 August 1985
Sep	185.4 mm (7.3 in)	17 September 1926
Oct	75.4 mm (3.0 in)	16 October 1968
Nov	65.0 mm (2.6 in)	10 November 1998
Dec	57.9 mm (2.3 in)	17 December 2016

Period of Record Coverage

1937 to 2020

84 years of record at Hawarden, 1937 to 2020. 2 years have data for under 90 percent of days and are left out of rankings: 1937, 2020.

Days with data per year at Hawarden
Year	Days with data	Share of year	Complete
1937	245	67%	No
1938	362	99%	Yes
1939	362	99%	Yes
1940	365	100%	Yes
1941	364	100%	Yes
1942	364	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	364	100%	Yes
1946	363	99%	Yes
1947	364	100%	Yes
1948	335	92%	Yes
1949	364	100%	Yes
1950	363	99%	Yes
1951	360	99%	Yes
1952	366	100%	Yes
1953	334	92%	Yes
1954	365	100%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	364	100%	Yes
1960	363	99%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	365	100%	Yes
1965	363	99%	Yes
1966	362	99%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	335	92%	Yes
1974	364	100%	Yes
1975	364	100%	Yes
1976	363	99%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	337	92%	Yes
1980	365	100%	Yes
1981	335	92%	Yes
1982	363	99%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	364	100%	Yes
1986	365	100%	Yes
1987	362	99%	Yes
1988	366	100%	Yes
1989	359	98%	Yes
1990	363	99%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	355	97%	Yes
1994	351	96%	Yes
1995	358	98%	Yes
1996	351	96%	Yes
1997	340	93%	Yes
1998	357	98%	Yes
1999	340	93%	Yes
2000	344	94%	Yes
2001	354	97%	Yes
2002	354	97%	Yes
2003	350	96%	Yes
2004	359	98%	Yes
2005	354	97%	Yes
2006	356	98%	Yes
2007	365	100%	Yes
2008	357	98%	Yes
2009	359	98%	Yes
2010	357	98%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	362	99%	Yes
2014	364	100%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	364	100%	Yes
2020	89	24%	No

Latest Records

Latest records at Hawarden
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 March 2020	Hawarden, US	daily rain	38.1 mm (1.5 in)	11.4 mm (0.4 in)	39 years	35 of 100 (Notable)
9 March 2020	Hawarden, US	daily high max	20.0 C (68.0 F)	1.1 C (2.0 F)	53 years	24 of 100 (Routine)
14 February 2020	Hawarden, US	daily low max	-14.4 C (6.1 F)	2.7 C (4.9 F)	12 years	14 of 100 (Routine)
13 February 2020	Hawarden, US	daily low min	-23.9 C (-11.0 F)	1.1 C (2.0 F)	1 year	9 of 100 (Routine)
13 January 2020	Hawarden, US	daily rain	4.3 mm (0.17 in)	0.5 mm (0.02 in)	10 years	13 of 100 (Routine)
29 December 2019	Hawarden, US	daily rain	22.1 mm (0.9 in)	10.7 mm (0.4 in)	46 years	20 of 100 (Routine)
12 October 2019	Hawarden, US	daily low max (Tie)	2.2 C (36.0 F)	tie	9 years	2 of 100 (Routine)
2 October 2019	Hawarden, US	daily rain	30.0 mm (1.2 in)	10.2 mm (0.4 in)	68 years	38 of 100 (Notable)
21 September 2019	Hawarden, US	daily high min	21.1 C (70.0 F)	1.1 C (2.0 F)	60 years	28 of 100 (Routine)
20 July 2019	Hawarden, US	daily high min (Tie)	25.0 C (77.0 F)	tie	8 years	2 of 100 (Routine)
2 July 2019	Hawarden, US	daily rain	45.7 mm (1.8 in)	6.1 mm (0.24 in)	45 years	26 of 100 (Routine)
14 June 2019	Hawarden, US	daily low min	4.4 C (39.9 F)	1.7 C (3.1 F)	49 years	26 of 100 (Routine)
10 June 2019	Hawarden, US	daily low min (Tie)	4.4 C (39.9 F)	tie	30 years	4 of 100 (Routine)
22 May 2019	Hawarden, US	daily low max	10.6 C (51.1 F)	1.6 C (2.9 F)	17 years	15 of 100 (Routine)
17 May 2019	Hawarden, US	daily rain	29.2 mm (1.1 in)	1.3 mm (0.05 in)	1 year	10 of 100 (Routine)
4 April 2019	Hawarden, US	monthly rain	65.5 mm (2.6 in)	4.5 mm (0.18 in)	72 years	44 of 100 (Notable)
14 March 2019	Hawarden, US	daily rain	28.4 mm (1.1 in)	9.6 mm (0.38 in)	65 years	40 of 100 (Notable)
13 March 2019	Hawarden, US	daily rain	25.4 mm (1.0 in)	8.6 mm (0.34 in)	45 years	33 of 100 (Routine)
5 March 2019	Hawarden, US	daily low max (Tie)	-12.2 C (10.0 F)	tie	58 years	6 of 100 (Routine)
4 March 2019	Hawarden, US	monthly low max	-17.8 C (0.0 F)	0.6 C (1.1 F)	5 years	19 of 100 (Routine)

Climate Trend

77 complete years, 1938 to 2019

One stripe for each of 77 complete years at Hawarden, 1938 to 2019. Blue stripes are years cooler than the station's own mean of 8.5 C (47.4 F); red stripes are warmer. The coolest year was 1996, at 6.0 C (42.9 F), and the warmest was 1987, at 10.6 C (51.1 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Hawarden as warming stripes, 1938 to 2019
Year	Annual mean temperature	Difference from the station mean
1938	9.7 C	+1.20 C
1939	9.9 C	+1.37 C
1940	8.3 C	-0.28 C
1941	9.7 C	+1.15 C
1942	9.2 C	+0.65 C
1943	9.0 C	+0.42 C
1944	9.3 C	+0.80 C
1945	8.5 C	-0.02 C
1946	9.7 C	+1.18 C
1947	8.8 C	+0.22 C
1949	9.1 C	+0.61 C
1950	7.3 C	-1.28 C
1951	7.1 C	-1.48 C
1952	8.8 C	+0.30 C
1954	9.6 C	+1.03 C
1955	9.2 C	+0.68 C
1956	9.2 C	+0.67 C
1957	9.0 C	+0.45 C
1958	9.1 C	+0.59 C
1959	8.8 C	+0.22 C
1960	7.9 C	-0.59 C
1961	8.5 C	-0.06 C
1962	8.5 C	-0.07 C
1963	9.7 C	+1.20 C
1964	9.3 C	+0.78 C
1965	8.3 C	-0.28 C
1966	8.2 C	-0.32 C
1967	8.8 C	+0.22 C
1968	9.2 C	+0.68 C
1969	7.5 C	-1.06 C
1970	8.3 C	-0.27 C
1971	8.5 C	+0.01 C
1972	7.4 C	-1.14 C
1974	9.0 C	+0.47 C
1975	8.3 C	-0.22 C
1976	9.1 C	+0.58 C
1977	9.4 C	+0.91 C
1978	7.3 C	-1.20 C
1980	9.1 C	+0.53 C
1982	7.9 C	-0.61 C
1983	8.5 C	-0.06 C
1984	8.6 C	+0.06 C
1985	7.7 C	-0.86 C
1986	9.5 C	+0.96 C
1987	10.6 C	+2.09 C
1988	9.3 C	+0.77 C
1989	8.1 C	-0.39 C
1990	9.7 C	+1.16 C
1991	9.2 C	+0.70 C
1992	8.7 C	+0.15 C
1993	6.6 C	-1.93 C
1994	7.3 C	-1.20 C
1995	7.4 C	-1.13 C
1996	6.0 C	-2.50 C
1997	7.3 C	-1.26 C
1998	9.5 C	+0.93 C
1999	8.9 C	+0.39 C
2000	8.2 C	-0.38 C
2001	8.6 C	+0.04 C
2002	8.3 C	-0.28 C
2003	8.0 C	-0.55 C
2004	8.3 C	-0.27 C
2005	9.0 C	+0.47 C
2006	9.4 C	+0.83 C
2007	8.7 C	+0.15 C
2008	6.7 C	-1.86 C
2009	7.3 C	-1.27 C
2010	7.9 C	-0.65 C
2011	8.0 C	-0.50 C
2012	10.5 C	+1.94 C
2013	7.2 C	-1.29 C
2014	6.9 C	-1.64 C
2015	9.0 C	+0.45 C
2016	9.5 C	+1.01 C
2017	9.1 C	+0.54 C
2018	7.4 C	-1.13 C
2019	7.1 C	-1.42 C

The annual mean temperature here has fallen by 0.12 C (0.03 to 0.21) per decade over 1938 to 2019. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hawarden
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.12 C (-0.20 to -0.03) per decade	-0.2 F (-0.4 to -0.1) per decade	1938 to 2019	77	Fall
Mean daily maximum	-0.14 C (-0.25 to -0.03) per decade	-0.3 F (-0.4 to -0.1) per decade	1938 to 2019	77	Fall
Mean daily minimum	-0.10 C (-0.18 to -0.02) per decade	-0.18 F (-0.32 to -0.04) per decade	1938 to 2019	77	Fall

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

1926 to 2020

Yearly extremes at Hawarden: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1940	37.2 C (99.0 F)	84
Coldest night (TNn)	-36.1 C (-33.0 F)	1988	-28.9 C (-20.0 F)	84
Wettest day (Rx1day)	192.0 mm (7.6 in)	1953	61.0 mm (2.4 in)	95
Wettest five days (Rx5day)	258.8 mm (10.2 in)	1926	88.1 mm (3.5 in)	95
Longest dry spell (CDD)	74 days	1939	29 days	95

Hottest day (TXx)

The hottest day of the year at Hawarden, 1926 to 2020. The record is 42.8 C (109.0 F) in 1940, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Hawarden by year
Year	Hottest day (TXx)
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	41.7 C (107.1 F)
1938	38.3 C (100.9 F)
1939	40.0 C (104.0 F)
1940	42.8 C (109.0 F)
1941	37.8 C (100.0 F)
1942	39.4 C (102.9 F)
1943	37.8 C (100.0 F)
1944	36.7 C (98.1 F)
1945	35.0 C (95.0 F)
1946	37.8 C (100.0 F)
1947	42.8 C (109.0 F)
1948	38.3 C (100.9 F)
1949	37.2 C (99.0 F)
1950	34.4 C (93.9 F)
1951	34.4 C (93.9 F)
1952	36.7 C (98.1 F)
1953	37.8 C (100.0 F)
1954	37.2 C (99.0 F)
1955	40.0 C (104.0 F)
1956	38.9 C (102.0 F)
1957	37.2 C (99.0 F)
1958	36.7 C (98.1 F)
1959	36.1 C (97.0 F)
1960	37.8 C (100.0 F)
1961	37.2 C (99.0 F)
1962	35.0 C (95.0 F)
1963	36.7 C (98.1 F)
1964	40.0 C (104.0 F)
1965	37.8 C (100.0 F)
1966	38.3 C (100.9 F)
1967	39.4 C (102.9 F)
1968	37.8 C (100.0 F)
1969	35.0 C (95.0 F)
1970	37.8 C (100.0 F)
1971	36.7 C (98.1 F)
1972	35.0 C (95.0 F)
1973	38.9 C (102.0 F)
1974	37.8 C (100.0 F)
1975	35.6 C (96.1 F)
1976	38.9 C (102.0 F)
1977	37.2 C (99.0 F)
1978	36.1 C (97.0 F)
1979	37.2 C (99.0 F)
1980	37.8 C (100.0 F)
1981	36.7 C (98.1 F)
1982	37.2 C (99.0 F)
1983	38.3 C (100.9 F)
1984	37.8 C (100.0 F)
1985	36.7 C (98.1 F)
1986	35.6 C (96.1 F)
1987	36.7 C (98.1 F)
1988	41.7 C (107.1 F)
1989	40.0 C (104.0 F)
1990	40.0 C (104.0 F)
1991	36.1 C (97.0 F)
1992	32.8 C (91.0 F)
1993	33.9 C (93.0 F)
1994	36.1 C (97.0 F)
1995	40.0 C (104.0 F)
1996	33.9 C (93.0 F)
1997	36.1 C (97.0 F)
1998	35.0 C (95.0 F)
1999	36.7 C (98.1 F)
2000	37.8 C (100.0 F)
2001	36.1 C (97.0 F)
2002	38.9 C (102.0 F)
2003	38.9 C (102.0 F)
2004	33.9 C (93.0 F)
2005	37.2 C (99.0 F)
2006	38.9 C (102.0 F)
2007	37.2 C (99.0 F)
2008	37.8 C (100.0 F)
2009	35.0 C (95.0 F)
2010	35.6 C (96.1 F)
2011	37.8 C (100.0 F)
2012	40.0 C (104.0 F)
2013	37.2 C (99.0 F)
2014	33.3 C (91.9 F)
2015	36.7 C (98.1 F)
2016	36.7 C (98.1 F)
2017	36.7 C (98.1 F)
2018	38.9 C (102.0 F)
2019	36.1 C (97.0 F)
2020	20.0 C (68.0 F)

Coldest night (TNn)

The coldest night of the year at Hawarden, 1926 to 2020. The record is -36.1 C (-33.0 F) in 1988, marked on the chart; the median year is -28.9 C (-20.0 F).

Coldest night (TNn) at Hawarden by year
Year	Coldest night (TNn)
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	-26.1 C (-15.0 F)
1938	-28.3 C (-18.9 F)
1939	-27.2 C (-17.0 F)
1940	-30.0 C (-22.0 F)
1941	-22.2 C (-8.0 F)
1942	-31.7 C (-25.1 F)
1943	-31.1 C (-24.0 F)
1944	-34.4 C (-29.9 F)
1945	-25.0 C (-13.0 F)
1946	-28.3 C (-18.9 F)
1947	-26.7 C (-16.1 F)
1948	-31.1 C (-24.0 F)
1949	-28.9 C (-20.0 F)
1950	-30.0 C (-22.0 F)
1951	-28.9 C (-20.0 F)
1952	-25.6 C (-14.1 F)
1953	-29.4 C (-20.9 F)
1954	-29.4 C (-20.9 F)
1955	-28.3 C (-18.9 F)
1956	-28.9 C (-20.0 F)
1957	-28.9 C (-20.0 F)
1958	-33.3 C (-27.9 F)
1959	-30.0 C (-22.0 F)
1960	-29.4 C (-20.9 F)
1961	-28.3 C (-18.9 F)
1962	-34.4 C (-29.9 F)
1963	-28.9 C (-20.0 F)
1964	-28.9 C (-20.0 F)
1965	-30.6 C (-23.1 F)
1966	-32.2 C (-26.0 F)
1967	-30.6 C (-23.1 F)
1968	-31.1 C (-24.0 F)
1969	-30.0 C (-22.0 F)
1970	-33.3 C (-27.9 F)
1971	-28.9 C (-20.0 F)
1972	-32.2 C (-26.0 F)
1973	-31.1 C (-24.0 F)
1974	-33.3 C (-27.9 F)
1975	-27.8 C (-18.0 F)
1976	-29.4 C (-20.9 F)
1977	-30.0 C (-22.0 F)
1978	-32.8 C (-27.0 F)
1979	-30.0 C (-22.0 F)
1980	-30.6 C (-23.1 F)
1981	-28.9 C (-20.0 F)
1982	-34.4 C (-29.9 F)
1983	-33.3 C (-27.9 F)
1984	-30.6 C (-23.1 F)
1985	-32.8 C (-27.0 F)
1986	-28.3 C (-18.9 F)
1987	-25.6 C (-14.1 F)
1988	-36.1 C (-33.0 F)
1989	-33.9 C (-29.0 F)
1990	-28.9 C (-20.0 F)
1991	-28.3 C (-18.9 F)
1992	-25.0 C (-13.0 F)
1993	-29.4 C (-20.9 F)
1994	-31.7 C (-25.1 F)
1995	-23.9 C (-11.0 F)
1996	-33.3 C (-27.9 F)
1997	-27.8 C (-18.0 F)
1998	-25.0 C (-13.0 F)
1999	-27.2 C (-17.0 F)
2000	-26.7 C (-16.1 F)
2001	-26.1 C (-15.0 F)
2002	-21.7 C (-7.1 F)
2003	-25.0 C (-13.0 F)
2004	-26.7 C (-16.1 F)
2005	-26.7 C (-16.1 F)
2006	-25.0 C (-13.0 F)
2007	-31.1 C (-24.0 F)
2008	-30.0 C (-22.0 F)
2009	-31.1 C (-24.0 F)
2010	-33.3 C (-27.9 F)
2011	-26.7 C (-16.1 F)
2012	-25.6 C (-14.1 F)
2013	-25.0 C (-13.0 F)
2014	-27.8 C (-18.0 F)
2015	-27.8 C (-18.0 F)
2016	-31.1 C (-24.0 F)
2017	-25.6 C (-14.1 F)
2018	-31.1 C (-24.0 F)
2019	-28.3 C (-18.9 F)
2020	-23.9 C (-11.0 F)

Wettest day (Rx1day)

The wettest day of the year at Hawarden, 1926 to 2020. The record is 192.0 mm (7.6 in) in 1953, marked on the chart; the median year is 61.0 mm (2.4 in).

Wettest day (Rx1day) at Hawarden by year
Year	Wettest day (Rx1day)
1926	185.4 mm (7.3 in)
1927	53.3 mm (2.1 in)
1928	69.1 mm (2.7 in)
1929	98.6 mm (3.9 in)
1930	50.8 mm (2.0 in)
1931	51.3 mm (2.0 in)
1932	38.1 mm (1.5 in)
1933	51.8 mm (2.0 in)
1934	94.2 mm (3.7 in)
1935	55.1 mm (2.2 in)
1936	89.4 mm (3.5 in)
1937	52.1 mm (2.1 in)
1938	63.8 mm (2.5 in)
1939	57.2 mm (2.3 in)
1940	50.5 mm (2.0 in)
1941	49.3 mm (1.9 in)
1942	50.8 mm (2.0 in)
1943	57.2 mm (2.3 in)
1944	57.2 mm (2.3 in)
1945	44.2 mm (1.7 in)
1946	61.0 mm (2.4 in)
1947	73.2 mm (2.9 in)
1948	67.1 mm (2.6 in)
1949	59.7 mm (2.4 in)
1950	83.8 mm (3.3 in)
1951	78.0 mm (3.1 in)
1952	97.8 mm (3.9 in)
1953	192.0 mm (7.6 in)
1954	57.4 mm (2.3 in)
1955	30.5 mm (1.2 in)
1956	29.5 mm (1.2 in)
1957	35.3 mm (1.4 in)
1958	22.6 mm (0.9 in)
1959	39.9 mm (1.6 in)
1960	66.8 mm (2.6 in)
1961	55.9 mm (2.2 in)
1962	86.4 mm (3.4 in)
1963	30.2 mm (1.2 in)
1964	63.0 mm (2.5 in)
1965	84.8 mm (3.3 in)
1966	68.3 mm (2.7 in)
1967	41.7 mm (1.6 in)
1968	75.4 mm (3.0 in)
1969	94.2 mm (3.7 in)
1970	76.7 mm (3.0 in)
1971	39.4 mm (1.6 in)
1972	104.1 mm (4.1 in)
1973	48.3 mm (1.9 in)
1974	88.1 mm (3.5 in)
1975	63.5 mm (2.5 in)
1976	29.0 mm (1.1 in)
1977	41.1 mm (1.6 in)
1978	72.4 mm (2.9 in)
1979	61.2 mm (2.4 in)
1980	63.5 mm (2.5 in)
1981	76.2 mm (3.0 in)
1982	40.6 mm (1.6 in)
1983	152.7 mm (6.0 in)
1984	47.2 mm (1.9 in)
1985	121.4 mm (4.8 in)
1986	62.2 mm (2.4 in)
1987	84.6 mm (3.3 in)
1988	101.9 mm (4.0 in)
1989	47.2 mm (1.9 in)
1990	44.5 mm (1.8 in)
1991	40.1 mm (1.6 in)
1992	61.0 mm (2.4 in)
1993	53.6 mm (2.1 in)
1994	50.0 mm (2.0 in)
1995	50.8 mm (2.0 in)
1996	48.8 mm (1.9 in)
1997	51.8 mm (2.0 in)
1998	65.0 mm (2.6 in)
1999	83.8 mm (3.3 in)
2000	73.7 mm (2.9 in)
2001	55.4 mm (2.2 in)
2002	35.6 mm (1.4 in)
2003	68.8 mm (2.7 in)
2004	66.8 mm (2.6 in)
2005	72.1 mm (2.8 in)
2006	119.4 mm (4.7 in)
2007	57.7 mm (2.3 in)
2008	66.5 mm (2.6 in)
2009	47.5 mm (1.9 in)
2010	116.1 mm (4.6 in)
2011	42.7 mm (1.7 in)
2012	77.2 mm (3.0 in)
2013	79.5 mm (3.1 in)
2014	68.3 mm (2.7 in)
2015	100.3 mm (3.9 in)
2016	57.9 mm (2.3 in)
2017	57.7 mm (2.3 in)
2018	90.7 mm (3.6 in)
2019	69.1 mm (2.7 in)
2020	38.1 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hawarden, 1926 to 2020. The record is 258.8 mm (10.2 in) in 1926, marked on the chart; the median year is 88.1 mm (3.5 in).

Wettest five days (Rx5day) at Hawarden by year
Year	Wettest five days (Rx5day)
1926	258.8 mm (10.2 in)
1927	77.2 mm (3.0 in)
1928	90.2 mm (3.6 in)
1929	103.4 mm (4.1 in)
1930	141.0 mm (5.6 in)
1931	58.4 mm (2.3 in)
1932	67.8 mm (2.7 in)
1933	67.8 mm (2.7 in)
1934	162.3 mm (6.4 in)
1935	68.0 mm (2.7 in)
1936	135.9 mm (5.4 in)
1937	74.1 mm (2.9 in)
1938	124.5 mm (4.9 in)
1939	67.1 mm (2.6 in)
1940	95.4 mm (3.8 in)
1941	85.9 mm (3.4 in)
1942	62.4 mm (2.5 in)
1943	116.2 mm (4.6 in)
1944	124.8 mm (4.9 in)
1945	53.7 mm (2.1 in)
1946	78.5 mm (3.1 in)
1947	74.5 mm (2.9 in)
1948	67.1 mm (2.6 in)
1949	78.5 mm (3.1 in)
1950	98.8 mm (3.9 in)
1951	107.3 mm (4.2 in)
1952	107.9 mm (4.2 in)
1953	202.9 mm (8.0 in)
1954	135.1 mm (5.3 in)
1955	45.0 mm (1.8 in)
1956	53.3 mm (2.1 in)
1957	67.2 mm (2.6 in)
1958	38.4 mm (1.5 in)
1959	92.0 mm (3.6 in)
1960	73.4 mm (2.9 in)
1961	67.3 mm (2.6 in)
1962	107.0 mm (4.2 in)
1963	44.4 mm (1.7 in)
1964	83.4 mm (3.3 in)
1965	99.1 mm (3.9 in)
1966	87.3 mm (3.4 in)
1967	72.2 mm (2.8 in)
1968	140.2 mm (5.5 in)
1969	114.6 mm (4.5 in)
1970	84.8 mm (3.3 in)
1971	103.4 mm (4.1 in)
1972	132.6 mm (5.2 in)
1973	76.2 mm (3.0 in)
1974	88.1 mm (3.5 in)
1975	64.4 mm (2.5 in)
1976	38.2 mm (1.5 in)
1977	49.1 mm (1.9 in)
1978	138.0 mm (5.4 in)
1979	98.8 mm (3.9 in)
1980	85.7 mm (3.4 in)
1981	76.2 mm (3.0 in)
1982	98.1 mm (3.9 in)
1983	207.3 mm (8.2 in)
1984	82.1 mm (3.2 in)
1985	157.2 mm (6.2 in)
1986	109.1 mm (4.3 in)
1987	97.3 mm (3.8 in)
1988	113.4 mm (4.5 in)
1989	68.5 mm (2.7 in)
1990	64.6 mm (2.5 in)
1991	66.1 mm (2.6 in)
1992	122.5 mm (4.8 in)
1993	80.8 mm (3.2 in)
1994	53.5 mm (2.1 in)
1995	75.9 mm (3.0 in)
1996	88.1 mm (3.5 in)
1997	59.0 mm (2.3 in)
1998	73.8 mm (2.9 in)
1999	140.0 mm (5.5 in)
2000	73.7 mm (2.9 in)
2001	80.0 mm (3.1 in)
2002	55.7 mm (2.2 in)
2003	115.5 mm (4.5 in)
2004	91.4 mm (3.6 in)
2005	119.4 mm (4.7 in)
2006	213.4 mm (8.4 in)
2007	96.8 mm (3.8 in)
2008	87.8 mm (3.5 in)
2009	105.4 mm (4.1 in)
2010	128.3 mm (5.1 in)
2011	66.8 mm (2.6 in)
2012	127.1 mm (5.0 in)
2013	150.7 mm (5.9 in)
2014	135.1 mm (5.3 in)
2015	123.4 mm (4.9 in)
2016	83.8 mm (3.3 in)
2017	90.5 mm (3.6 in)
2018	149.1 mm (5.9 in)
2019	118.1 mm (4.6 in)
2020	40.4 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hawarden, 1926 to 2020. The record is 74 days in 1939, marked on the chart; the median year is 29 days.

Longest dry spell (CDD) at Hawarden by year
Year	Longest dry spell (CDD)
1926	22 days
1927	34 days
1928	36 days
1929	17 days
1930	36 days
1931	62 days
1932	21 days
1933	45 days
1934	49 days
1935	28 days
1936	27 days
1937	30 days
1938	26 days
1939	74 days
1940	26 days
1941	21 days
1942	38 days
1943	53 days
1944	33 days
1945	37 days
1946	29 days
1947	24 days
1948	25 days
1949	28 days
1950	29 days
1951	36 days
1952	56 days
1953	24 days
1954	33 days
1955	29 days
1956	32 days
1957	29 days
1958	53 days
1959	23 days
1960	34 days
1961	30 days
1962	38 days
1963	31 days
1964	28 days
1965	21 days
1966	27 days
1967	40 days
1968	23 days
1969	24 days
1970	23 days
1971	40 days
1972	22 days
1973	21 days
1974	61 days
1975	26 days
1976	42 days
1977	24 days
1978	29 days
1979	36 days
1980	33 days
1981	30 days
1982	27 days
1983	26 days
1984	30 days
1985	26 days
1986	49 days
1987	32 days
1988	24 days
1989	55 days
1990	21 days
1991	23 days
1992	21 days
1993	23 days
1994	39 days
1995	37 days
1996	18 days
1997	23 days
1998	44 days
1999	45 days
2000	14 days
2001	41 days
2002	30 days
2003	21 days
2004	24 days
2005	26 days
2006	26 days
2007	42 days
2008	14 days
2009	15 days
2010	28 days
2011	31 days
2012	25 days
2013	27 days
2014	19 days
2015	27 days
2016	22 days
2017	50 days
2018	24 days
2019	36 days
2020	41 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.

Frost Dates and Growing Season

77 years with a frost

Across 77 years with a frost, the median last spring frost at Hawarden falls on 3 May and the median first autumn frost on 29 September, which leaves a median of 152 days between them.

In 1990 to 2019 the median growing season was 155 days. That is 5 days more than in 1938 to 1969.

Fitted over all years, the growing season changes by +1.5 days per decade at this station.

Frost dates and growing season at Hawarden
Measure	Median, all years	Earliest period (1938 to 1969)	Recent period (1990 to 2019)	Recent against earliest	Fitted trend
Last spring frost	3 May	8 May	1 May	7 days earlier	-0.6 days per decade
First autumn frost	29 September	28 September	3 October	5 days later	+0.9 days per decade
Growing days	152 days	150 days	155 days	5 days more	+1.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

91 years, 1927 to 2019

A day with at least 61.0 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 154.0 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Hawarden: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.0 mm (2.4 in)
5 years	83.6 mm (3.3 in)
10 years	99.4 mm (3.9 in)
25 years	120.5 mm (4.7 in)
50 years	136.9 mm (5.4 in)
100 years	154.0 mm (6.1 in)	Longer than the 91 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, 91 years of values from 1927 to 2019.

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: 192.0 mm (7.6 in) in 1953; 152.7 mm (6.0 in) in 1983; 121.4 mm (4.8 in) in 1985.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Hawarden, at 1964 and 1994. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.2 C (0.3 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Hawarden, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1964	-0.2	-0.4	likely	5
1994	-0.1	-0.3	possible	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2005 to 2019 against 1961 to 1990

Over 2005 to 2019, Hawarden had a mean temperature of 8.2 C (46.8 F) and 838.5 mm (33.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Colo (United States, 282 km away), Eldora (United States, 286 km away) and Toledo 3N (United States, 338 km away).

Climate twins of Hawarden: stations whose 1961 to 1990 climate is closest to its 2005 to 2019 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Colo	United States	282 km (175 mi)	8.3 C (47.0 F)	866.4 mm (34.1 in)	0.51
Eldora	United States	286 km (178 mi)	8.3 C (47.0 F)	849.2 mm (33.4 in)	0.56
Toledo 3N	United States	338 km (210 mi)	8.3 C (47.0 F)	881.4 mm (34.7 in)	0.61

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

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