Ciudad Real (Instituto) Weather Records (SPE00120044)

Record envelope, standing records and threshold days for Ciudad Real (Instituto) (SPE00120044), Spain, with 51 years of record.

Key Facts for Ciudad Real (Instituto)

Ciudad Real (Instituto) (SPE00120044) is a weather station in Spain at 38.99 latitude and -3.93 longitude, 627 m (2,057 ft) above sea level.
The station reports from 1920 to 1970, 51 years of record.
1,464 records set at Ciudad Real (Instituto) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ciudad Real (Instituto) set a daily record low minimum temperature of 0.0 C (32.0 F) on 27 October 1970.

About the Station

Location: Spain, 38.99 latitude, -3.93 longitude.
Elevation: 627 m (2,057 ft).
Period of record: 1920 to 1970, 51 years.
Eligible elements: tmax, tmin, 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 Ciudad Real (Instituto). 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 Ciudad Real (Instituto), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.2 C (68.4 F)	-8.2 C (17.2 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	30.0 C (86.0 F)	-5.2 C (22.6 F)	n/a	n/a
Apr	34.0 C (93.2 F)	-1.0 C (30.2 F)	n/a	n/a
May	37.4 C (99.3 F)	1.0 C (33.8 F)	n/a	n/a
Jun	41.2 C (106.2 F)	5.0 C (41.0 F)	n/a	n/a
Jul	44.2 C (111.6 F)	6.2 C (43.2 F)	n/a	n/a
Aug	42.0 C (107.6 F)	8.0 C (46.4 F)	n/a	n/a
Sep	40.0 C (104.0 F)	4.0 C (39.2 F)	n/a	n/a
Oct	32.4 C (90.3 F)	-2.0 C (28.4 F)	n/a	n/a
Nov	26.6 C (79.9 F)	-4.2 C (24.4 F)	n/a	n/a
Dec	20.2 C (68.4 F)	-8.4 C (16.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ciudad Real (Instituto) still stand. 1945 holds the most, with 89.

Standing records at Ciudad Real (Instituto) by the year they were set
Year set	Standing records
1920	25
1921	30
1922	35
1923	32
1924	41
1925	39
1926	31
1927	39
1928	23
1929	9
1930	14
1931	22
1932	15
1933	22
1935	31
1936	39
1937	10
1938	36
1939	7
1940	20
1941	41
1942	27
1943	49
1944	41
1945	89
1946	45
1947	44
1948	13
1949	10
1950	5
1951	20
1952	22
1953	19
1954	29
1955	26
1956	23
1957	32
1958	55
1959	29
1960	33
1961	26
1962	28
1963	26
1964	25
1965	41
1966	30
1967	23
1968	14
1969	40
1970	39

All-Time Record Progression

2 new records

2 all-time records were set at Ciudad Real (Instituto) between 12 February 1956 and 31 August 1957. Each dot is a new record.

When Ciudad Real (Instituto) set new all-time records
Date	Kind	Detail
1956-02-12	Record low minimum temperature	Record low minimum temperature -9.4 C (15.1 F)
1957-08-31	Record daily precipitation	Record daily precipitation 57.4 mm (2.3 in)

Wettest Day of Each Month

Aug: 57.4 mm (2.3 in)

The wettest day on record for each calendar month at Ciudad Real (Instituto). The most was 57.4 mm (2.3 in) on 31 August 1957.

Record daily precipitation for each month at Ciudad Real (Instituto)
Month	Record daily precipitation (mm)	Date
Jan	45.0 mm (1.8 in)	25 January 1937
Feb	57.0 mm (2.2 in)	14 February 1933
Mar	46.4 mm (1.8 in)	11 March 1965
Apr	34.0 mm (1.3 in)	13 April 1943
May	50.0 mm (2.0 in)	23 May 1955
Jun	47.4 mm (1.9 in)	5 June 1967
Jul	17.0 mm (0.7 in)	5 July 1969
Aug	57.4 mm (2.3 in)	31 August 1957
Sep	38.0 mm (1.5 in)	28 September 1928
Oct	54.6 mm (2.1 in)	16 October 1956
Nov	40.2 mm (1.6 in)	1 November 1939
Dec	47.8 mm (1.9 in)	30 December 1961

Period of Record Coverage

1920 to 1970

50 years of record at Ciudad Real (Instituto), 1920 to 1970. 4 years have data for under 90 percent of days and are left out of rankings: 1937, 1939, 1940, 1970.

Days with data per year at Ciudad Real (Instituto)
Year	Days with data	Share of year	Complete
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	364	100%	Yes
1928	366	100%	Yes
1929	364	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	364	100%	Yes
1935	365	100%	Yes
1936	351	96%	Yes
1937	151	41%	No
1938	354	97%	Yes
1939	144	39%	No
1940	293	80%	No
1941	364	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	364	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	355	97%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	304	83%	No

Latest Records

Latest records at Ciudad Real (Instituto)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 1970	Ciudad Real (Instituto), ES	daily low min	0.0 C (32.0 F)	1.0 C (1.8 F)	28 years	16 of 100 (Routine)
26 October 1970	Ciudad Real (Instituto), ES	daily low min (Tie)	-1.0 C (30.2 F)	tie	28 years	3 of 100 (Routine)
25 October 1970	Ciudad Real (Instituto), ES	daily low min	-1.0 C (30.2 F)	2.8 C (5.0 F)	5 years	15 of 100 (Routine)
24 October 1970	Ciudad Real (Instituto), ES	monthly low min	-2.0 C (28.4 F)	0.8 C (1.4 F)	28 years	25 of 100 (Routine)
23 October 1970	Ciudad Real (Instituto), ES	daily low min	-1.0 C (30.2 F)	3.0 C (5.4 F)	27 years	23 of 100 (Routine)
22 October 1970	Ciudad Real (Instituto), ES	daily low min	1.6 C (34.9 F)	0.6 C (1.1 F)	25 years	14 of 100 (Routine)
12 October 1970	Ciudad Real (Instituto), ES	daily low max	15.2 C (59.4 F)	0.8 C (1.4 F)	33 years	16 of 100 (Routine)
11 October 1970	Ciudad Real (Instituto), ES	daily low max	13.2 C (55.8 F)	1.8 C (3.2 F)	44 years	22 of 100 (Routine)
11 October 1970	Ciudad Real (Instituto), ES	daily low min	4.8 C (40.6 F)	1.2 C (2.2 F)	9 years	11 of 100 (Routine)
10 October 1970	Ciudad Real (Instituto), ES	daily low min	2.6 C (36.7 F)	4.4 C (7.9 F)	29 years	28 of 100 (Routine)
10 October 1970	Ciudad Real (Instituto), ES	daily low max	14.6 C (58.3 F)	0.4 C (0.7 F)	4 years	6 of 100 (Routine)
9 October 1970	Ciudad Real (Instituto), ES	daily low max	15.0 C (59.0 F)	2.6 C (4.7 F)	49 years	24 of 100 (Routine)
9 October 1970	Ciudad Real (Instituto), ES	daily low min	4.2 C (39.6 F)	1.6 C (2.9 F)	4 years	11 of 100 (Routine)
30 September 1970	Ciudad Real (Instituto), ES	daily high max	30.6 C (87.1 F)	0.2 C (0.4 F)	24 years	12 of 100 (Routine)
19 September 1970	Ciudad Real (Instituto), ES	daily high max (Tie)	35.0 C (95.0 F)	tie	24 years	3 of 100 (Routine)
7 September 1970	Ciudad Real (Instituto), ES	daily high max	39.0 C (102.2 F)	1.0 C (1.8 F)	27 years	15 of 100 (Routine)
4 September 1970	Ciudad Real (Instituto), ES	daily high max	37.6 C (99.7 F)	0.2 C (0.4 F)	28 years	13 of 100 (Routine)
27 July 1970	Ciudad Real (Instituto), ES	daily high max (Tie)	40.0 C (104.0 F)	tie	11 years	2 of 100 (Routine)
26 July 1970	Ciudad Real (Instituto), ES	daily high max (Tie)	40.0 C (104.0 F)	tie	24 years	3 of 100 (Routine)
18 June 1970	Ciudad Real (Instituto), ES	daily low min	7.0 C (44.6 F)	2.0 C (3.6 F)	28 years	19 of 100 (Routine)

Climate Trend

45 complete years, 1920 to 1969

One stripe for each of 45 complete years at Ciudad Real (Instituto), 1920 to 1969. Blue stripes are years cooler than the station's own mean of 14.5 C (58.0 F); red stripes are warmer. The coolest year was 1932, at 13.1 C (55.7 F), and the warmest was 1945, at 16.8 C (62.2 F). The strongest colour marks a difference of 2.4 C (4.3 F).

Annual mean temperature at Ciudad Real (Instituto) as warming stripes, 1920 to 1969
Year	Annual mean temperature	Difference from the station mean
1920	15.1 C	+0.66 C
1921	14.5 C	+0.07 C
1922	14.1 C	-0.40 C
1923	14.0 C	-0.46 C
1924	14.2 C	-0.23 C
1925	13.3 C	-1.17 C
1926	14.8 C	+0.36 C
1927	14.3 C	-0.18 C
1928	14.4 C	-0.12 C
1929	14.1 C	-0.38 C
1930	14.2 C	-0.29 C
1931	14.2 C	-0.28 C
1932	13.1 C	-1.33 C
1933	14.1 C	-0.35 C
1935	13.5 C	-0.93 C
1936	13.8 C	-0.64 C
1941	13.9 C	-0.54 C
1942	15.3 C	+0.80 C
1943	15.7 C	+1.27 C
1944	14.9 C	+0.43 C
1945	16.8 C	+2.33 C
1946	14.3 C	-0.15 C
1947	15.7 C	+1.21 C
1948	15.0 C	+0.52 C
1949	14.2 C	-0.25 C
1950	14.4 C	-0.03 C
1951	13.3 C	-1.19 C
1952	13.8 C	-0.65 C
1953	14.3 C	-0.21 C
1954	14.5 C	+0.06 C
1955	15.5 C	+0.98 C
1956	13.7 C	-0.76 C
1957	14.8 C	+0.31 C
1958	15.6 C	+1.17 C
1959	15.4 C	+0.96 C
1960	15.2 C	+0.70 C
1961	15.8 C	+1.28 C
1962	14.8 C	+0.34 C
1963	13.4 C	-1.09 C
1964	14.2 C	-0.31 C
1965	14.3 C	-0.13 C
1966	14.6 C	+0.16 C
1967	14.2 C	-0.30 C
1968	14.3 C	-0.19 C
1969	13.3 C	-1.20 C

The fitted trend in annual mean temperature here over 1920 to 1969 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.4) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ciudad Real (Instituto)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.2 to 0.4) per decade	1920 to 1969	45	Not clearly different from zero
Mean daily maximum	0.1 C (-0.1 to 0.3) per decade	0.2 F (-0.2 to 0.5) per decade	1920 to 1969	45	Not clearly different from zero
Mean daily minimum	0.05 C (-0.13 to 0.22) per decade	0.1 F (-0.2 to 0.4) per decade	1920 to 1969	45	Not clearly different from zero

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

1920 to 1970

Yearly extremes at Ciudad Real (Instituto): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.2 C (111.6 F)	1945	39.8 C (103.6 F)	50
Coldest night (TNn)	-9.4 C (15.1 F)	1956	-6.0 C (21.2 F)	50
Wettest day (Rx1day)	57.4 mm (2.3 in)	1957	32.1 mm (1.3 in)	50
Wettest five days (Rx5day)	84.5 mm (3.3 in)	1962	58.4 mm (2.3 in)	50
Longest dry spell (CDD)	125 days	1943	55 days	50

Hottest day (TXx)

The hottest day of the year at Ciudad Real (Instituto), 1920 to 1970. The record is 44.2 C (111.6 F) in 1945, marked on the chart; the median year is 39.8 C (103.6 F).

Hottest day (TXx) at Ciudad Real (Instituto) by year
Year	Hottest day (TXx)
1920	38.2 C (100.8 F)
1921	42.0 C (107.6 F)
1922	39.8 C (103.6 F)
1923	39.4 C (102.9 F)
1924	38.4 C (101.1 F)
1925	38.6 C (101.5 F)
1926	39.4 C (102.9 F)
1927	38.2 C (100.8 F)
1928	40.0 C (104.0 F)
1929	38.0 C (100.4 F)
1930	38.4 C (101.1 F)
1931	40.4 C (104.7 F)
1932	39.0 C (102.2 F)
1933	39.2 C (102.6 F)
1935	40.6 C (105.1 F)
1936	38.6 C (101.5 F)
1937	34.2 C (93.6 F)
1938	40.4 C (104.7 F)
1939	37.2 C (99.0 F)
1940	40.0 C (104.0 F)
1941	43.0 C (109.4 F)
1942	40.4 C (104.7 F)
1943	42.0 C (107.6 F)
1944	43.0 C (109.4 F)
1945	44.2 C (111.6 F)
1946	41.2 C (106.2 F)
1947	40.6 C (105.1 F)
1948	39.6 C (103.3 F)
1949	38.0 C (100.4 F)
1950	39.6 C (103.3 F)
1951	38.6 C (101.5 F)
1952	39.6 C (103.3 F)
1953	38.0 C (100.4 F)
1954	39.8 C (103.6 F)
1955	37.2 C (99.0 F)
1956	37.4 C (99.3 F)
1957	40.0 C (104.0 F)
1958	41.4 C (106.5 F)
1959	40.2 C (104.4 F)
1960	38.2 C (100.8 F)
1961	37.8 C (100.0 F)
1962	40.0 C (104.0 F)
1963	36.0 C (96.8 F)
1964	40.0 C (104.0 F)
1965	41.2 C (106.2 F)
1966	41.8 C (107.2 F)
1967	42.6 C (108.7 F)
1968	40.0 C (104.0 F)
1969	41.4 C (106.5 F)
1970	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Ciudad Real (Instituto), 1920 to 1970. The record is -9.4 C (15.1 F) in 1956, marked on the chart; the median year is -6.0 C (21.2 F).

Coldest night (TNn) at Ciudad Real (Instituto) by year
Year	Coldest night (TNn)
1920	-6.2 C (20.8 F)
1921	-6.0 C (21.2 F)
1922	-5.8 C (21.6 F)
1923	-6.8 C (19.8 F)
1924	-5.6 C (21.9 F)
1925	-5.2 C (22.6 F)
1926	-8.2 C (17.2 F)
1927	-3.2 C (26.2 F)
1928	-5.0 C (23.0 F)
1929	-6.2 C (20.8 F)
1930	-7.4 C (18.7 F)
1931	-5.0 C (23.0 F)
1932	-7.0 C (19.4 F)
1933	-6.2 C (20.8 F)
1935	-9.2 C (15.4 F)
1936	-5.0 C (23.0 F)
1937	-4.0 C (24.8 F)
1938	-6.6 C (20.1 F)
1939	-2.0 C (28.4 F)
1940	-7.0 C (19.4 F)
1941	-6.0 C (21.2 F)
1942	-5.2 C (22.6 F)
1943	-4.2 C (24.4 F)
1944	-6.0 C (21.2 F)
1945	-8.2 C (17.2 F)
1946	-8.0 C (17.6 F)
1947	-6.2 C (20.8 F)
1948	-3.0 C (26.6 F)
1949	-4.6 C (23.7 F)
1950	-4.4 C (24.1 F)
1951	-3.6 C (25.5 F)
1952	-4.6 C (23.7 F)
1953	-4.4 C (24.1 F)
1954	-9.0 C (15.8 F)
1955	-5.2 C (22.6 F)
1956	-9.4 C (15.1 F)
1957	-7.0 C (19.4 F)
1958	-3.2 C (26.2 F)
1959	-2.4 C (27.7 F)
1960	-4.4 C (24.1 F)
1961	-6.0 C (21.2 F)
1962	-8.4 C (16.9 F)
1963	-4.0 C (24.8 F)
1964	-5.0 C (23.0 F)
1965	-9.0 C (15.8 F)
1966	-6.0 C (21.2 F)
1967	-8.0 C (17.6 F)
1968	-7.4 C (18.7 F)
1969	-7.4 C (18.7 F)
1970	-6.0 C (21.2 F)

Wettest day (Rx1day)

The wettest day of the year at Ciudad Real (Instituto), 1920 to 1970. The record is 57.4 mm (2.3 in) in 1957, marked on the chart; the median year is 32.1 mm (1.3 in).

Wettest day (Rx1day) at Ciudad Real (Instituto) by year
Year	Wettest day (Rx1day)
1920	21.2 mm (0.8 in)
1921	32.2 mm (1.3 in)
1922	32.0 mm (1.3 in)
1923	18.6 mm (0.7 in)
1924	22.0 mm (0.9 in)
1925	29.2 mm (1.1 in)
1926	39.0 mm (1.5 in)
1927	32.4 mm (1.3 in)
1928	38.0 mm (1.5 in)
1929	26.4 mm (1.0 in)
1930	30.0 mm (1.2 in)
1931	23.0 mm (0.9 in)
1932	17.0 mm (0.7 in)
1933	57.0 mm (2.2 in)
1935	27.2 mm (1.1 in)
1936	23.6 mm (0.9 in)
1937	45.0 mm (1.8 in)
1938	9.4 mm (0.37 in)
1939	40.2 mm (1.6 in)
1940	23.0 mm (0.9 in)
1941	28.2 mm (1.1 in)
1942	35.0 mm (1.4 in)
1943	34.0 mm (1.3 in)
1944	23.2 mm (0.9 in)
1945	28.0 mm (1.1 in)
1946	37.8 mm (1.5 in)
1947	28.6 mm (1.1 in)
1948	37.2 mm (1.5 in)
1949	24.0 mm (0.9 in)
1950	32.4 mm (1.3 in)
1951	36.4 mm (1.4 in)
1952	44.4 mm (1.7 in)
1953	25.0 mm (1.0 in)
1954	20.6 mm (0.8 in)
1955	50.0 mm (2.0 in)
1956	54.6 mm (2.1 in)
1957	57.4 mm (2.3 in)
1958	37.5 mm (1.5 in)
1959	23.5 mm (0.9 in)
1960	24.8 mm (1.0 in)
1961	47.8 mm (1.9 in)
1962	33.0 mm (1.3 in)
1963	27.4 mm (1.1 in)
1964	35.0 mm (1.4 in)
1965	46.4 mm (1.8 in)
1966	31.2 mm (1.2 in)
1967	47.4 mm (1.9 in)
1968	35.8 mm (1.4 in)
1969	41.2 mm (1.6 in)
1970	28.0 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ciudad Real (Instituto), 1920 to 1970. The record is 84.5 mm (3.3 in) in 1962, marked on the chart; the median year is 58.4 mm (2.3 in).

Wettest five days (Rx5day) at Ciudad Real (Instituto) by year
Year	Wettest five days (Rx5day)
1920	40.8 mm (1.6 in)
1921	70.0 mm (2.8 in)
1922	50.6 mm (2.0 in)
1923	47.0 mm (1.9 in)
1924	48.2 mm (1.9 in)
1925	52.4 mm (2.1 in)
1926	71.4 mm (2.8 in)
1927	48.4 mm (1.9 in)
1928	77.0 mm (3.0 in)
1929	48.0 mm (1.9 in)
1930	57.0 mm (2.2 in)
1931	44.2 mm (1.7 in)
1932	32.4 mm (1.3 in)
1933	66.2 mm (2.6 in)
1935	59.4 mm (2.3 in)
1936	47.4 mm (1.9 in)
1937	78.8 mm (3.1 in)
1938	22.8 mm (0.9 in)
1939	60.4 mm (2.4 in)
1940	37.8 mm (1.5 in)
1941	64.2 mm (2.5 in)
1942	70.4 mm (2.8 in)
1943	69.1 mm (2.7 in)
1944	34.0 mm (1.3 in)
1945	32.0 mm (1.3 in)
1946	54.8 mm (2.2 in)
1947	80.0 mm (3.1 in)
1948	67.4 mm (2.7 in)
1949	29.2 mm (1.1 in)
1950	56.0 mm (2.2 in)
1951	83.6 mm (3.3 in)
1952	66.8 mm (2.6 in)
1953	34.8 mm (1.4 in)
1954	28.7 mm (1.1 in)
1955	67.6 mm (2.7 in)
1956	63.3 mm (2.5 in)
1957	57.4 mm (2.3 in)
1958	73.8 mm (2.9 in)
1959	36.4 mm (1.4 in)
1960	51.4 mm (2.0 in)
1961	57.4 mm (2.3 in)
1962	84.5 mm (3.3 in)
1963	62.2 mm (2.4 in)
1964	59.4 mm (2.3 in)
1965	82.8 mm (3.3 in)
1966	66.0 mm (2.6 in)
1967	81.2 mm (3.2 in)
1968	50.2 mm (2.0 in)
1969	71.8 mm (2.8 in)
1970	69.4 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ciudad Real (Instituto), 1920 to 1970. The record is 125 days in 1943, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Ciudad Real (Instituto) by year
Year	Longest dry spell (CDD)
1920	95 days
1921	52 days
1922	45 days
1923	35 days
1924	55 days
1925	53 days
1926	62 days
1927	68 days
1928	62 days
1929	41 days
1930	87 days
1931	65 days
1932	74 days
1933	62 days
1935	92 days
1936	68 days
1937	40 days
1938	80 days
1939	52 days
1940	33 days
1941	73 days
1942	70 days
1943	125 days
1944	59 days
1945	112 days
1946	52 days
1947	70 days
1948	48 days
1949	67 days
1950	57 days
1951	88 days
1952	71 days
1953	33 days
1954	54 days
1955	29 days
1956	56 days
1957	41 days
1958	49 days
1959	20 days
1960	25 days
1961	24 days
1962	65 days
1963	32 days
1964	34 days
1965	25 days
1966	40 days
1967	64 days
1968	31 days
1969	26 days
1970	37 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

45 years with a frost

Across 45 years with a frost, the median last spring frost at Ciudad Real (Instituto) falls on 10 March and the median first autumn frost on 19 November, which leaves a median of 253 days between them.

Fitted over all years, the growing season changes by +3.3 days per decade at this station.

Frost dates and growing season at Ciudad Real (Instituto)
Measure	Median, all years	Earliest period	Recent period (1936 to 1969)	Recent against earliest	Fitted trend
Last spring frost	10 March	n/a	9 March	n/a	-2.0 days per decade
First autumn frost	19 November	n/a	19 November	n/a	+1.3 days per decade
Growing days	253 days	n/a	258 days	n/a	+3.3 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

46 years, 1920 to 1968

A day with at least 30.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 64.7 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Ciudad Real (Instituto): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.8 mm (1.2 in)
5 years	40.5 mm (1.6 in)
10 years	46.7 mm (1.8 in)
25 years	54.2 mm (2.1 in)
50 years	59.6 mm (2.3 in)	Longer than the 46 years of record
100 years	64.7 mm (2.5 in)	Longer than the 46 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, 46 years of values from 1920 to 1968.

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: 57.4 mm (2.3 in) in 1957; 57.0 mm (2.2 in) in 1933; 54.6 mm (2.1 in) in 1956.

Download the Data

Data for Ciudad Real (Instituto) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ciudad Real (Instituto) 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).