Corona Weather Records (USC00292093)

Record envelope, standing records and threshold days for Corona (USC00292093), New Mexico, United States, with 69 years of record.

Key Facts for Corona

Corona (USC00292093) is a weather station in New Mexico, United States at 34.25 latitude and -105.58 longitude, 2,028 m (6,654 ft) above sea level.
The station reports from 1909 to 1977, 69 years of record.
1,464 records set at Corona still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Corona set an all-time record daily snowfall of 55.9 cm (22.0 in) on 10 February 1977.

About the Station

Location: New Mexico, United States, 34.25 latitude, -105.58 longitude.
Elevation: 2,028 m (6,654 ft).
Period of record: 1909 to 1977, 69 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 Corona. 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 Corona, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.9 C (75.0 F)	-35.6 C (-32.1 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Mar	25.6 C (78.1 F)	-24.4 C (-11.9 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-18.3 C (-0.9 F)	n/a	n/a
May	35.0 C (95.0 F)	-9.4 C (15.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	43.3 C (109.9 F)	3.3 C (37.9 F)	n/a	n/a
Aug	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-6.1 C (21.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-10.6 C (12.9 F)	n/a	n/a
Nov	26.7 C (80.1 F)	-23.9 C (-11.0 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-24.4 C (-11.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Corona still stand. 1918 holds the most, with 60.

Standing records at Corona by the year they were set
Year set	Standing records
1911	21
1912	34
1913	20
1914	8
1915	10
1916	38
1917	44
1918	60
1919	10
1920	19
1921	41
1922	30
1923	20
1924	17
1925	18
1926	16
1927	20
1928	22
1929	24
1930	8
1931	14
1932	11
1933	19
1934	32
1935	41
1936	30
1937	39
1938	33
1939	22
1940	8
1941	17
1942	29
1943	48
1944	18
1945	25
1946	14
1947	13
1948	35
1949	18
1950	42
1951	27
1952	14
1953	12
1954	16
1955	13
1956	19
1957	11
1958	25
1959	6
1960	21
1961	25
1962	27
1963	19
1964	17
1965	17
1966	10
1967	20
1968	14
1969	14
1970	13
1971	28
1972	16
1973	17
1974	18
1975	30
1976	26
1977	1

All-Time Record Progression

13 new records

13 all-time records were set at Corona between 22 June 1941 and 10 February 1977. Each dot is a new record.

When Corona set new all-time records
Date	Kind	Detail
1941-06-22	Record daily precipitation	Record daily precipitation 71.6 mm (2.8 in)
1942-04-08	Record daily snowfall	Record daily snowfall 45.7 cm (18.0 in)
1944-07-06	Record high maximum temperature	Record high maximum temperature 41.7 C (107.1 F)
1944-07-08	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
1947-01-03	Record low minimum temperature	Record low minimum temperature -26.7 C (-16.1 F)
1948-01-28	Record low maximum temperature	Record low maximum temperature -12.8 C (9.0 F)
1949-01-29	Record low maximum temperature	Record low maximum temperature -14.4 C (6.1 F)
1949-01-30	Record low minimum temperature	Record low minimum temperature -27.2 C (-17.0 F)
1962-01-10	Record low maximum temperature	Record low maximum temperature -17.8 C (0.0 F)
1962-01-11	Record low minimum temperature	Record low minimum temperature -31.1 C (-24.0 F)
1963-01-13	Record low minimum temperature	Record low minimum temperature -32.2 C (-26.0 F)
1971-01-06	Record low minimum temperature	Record low minimum temperature -35.6 C (-32.1 F)
1977-02-10	Record daily snowfall	Record daily snowfall 55.9 cm (22.0 in)

Wettest Day of Each Month

Jun: 71.6 mm (2.8 in)

The wettest day on record for each calendar month at Corona. The most was 71.6 mm (2.8 in) on 22 June 1941.

Record daily precipitation for each month at Corona
Month	Record daily precipitation (mm)	Date
Jan	48.8 mm (1.9 in)	26 January 1944
Feb	31.8 mm (1.3 in)	8 February 1940
Mar	38.1 mm (1.5 in)	26 March 1926
Apr	55.9 mm (2.2 in)	22 April 1942
May	50.8 mm (2.0 in)	22 May 1940
Jun	71.6 mm (2.8 in)	22 June 1941
Jul	58.4 mm (2.3 in)	24 July 1962
Aug	66.5 mm (2.6 in)	2 August 1966
Sep	67.1 mm (2.6 in)	29 September 1941
Oct	52.1 mm (2.1 in)	6 October 1954
Nov	29.2 mm (1.1 in)	2 November 1923
Dec	45.7 mm (1.8 in)	5 December 1942

Period of Record Coverage

1911 to 1977

67 years of record at Corona, 1911 to 1977. 6 years have data for under 90 percent of days and are left out of rankings: 1911, 1949, 1973, 1974, 1975, 1977.

Days with data per year at Corona
Year	Days with data	Share of year	Complete
1911	150	41%	No
1912	356	97%	Yes
1913	361	99%	Yes
1914	361	99%	Yes
1915	362	99%	Yes
1916	366	100%	Yes
1917	362	99%	Yes
1918	364	100%	Yes
1919	341	93%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	363	99%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	354	97%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	364	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	363	99%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	363	99%	Yes
1936	364	99%	Yes
1937	361	99%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	333	91%	Yes
1942	334	92%	Yes
1943	365	100%	Yes
1944	352	96%	Yes
1945	362	99%	Yes
1946	356	98%	Yes
1947	360	99%	Yes
1948	359	98%	Yes
1949	328	90%	No
1950	363	99%	Yes
1951	336	92%	Yes
1952	365	100%	Yes
1953	362	99%	Yes
1954	363	99%	Yes
1955	363	99%	Yes
1956	365	100%	Yes
1957	362	99%	Yes
1958	360	99%	Yes
1959	354	97%	Yes
1960	347	95%	Yes
1961	352	96%	Yes
1962	339	93%	Yes
1963	353	97%	Yes
1964	365	100%	Yes
1965	333	91%	Yes
1966	358	98%	Yes
1967	364	100%	Yes
1968	330	90%	Yes
1969	364	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	346	95%	Yes
1973	313	86%	No
1974	268	73%	No
1975	317	87%	No
1976	350	96%	Yes
1977	58	16%	No

Latest Records

Latest records at Corona
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 February 1977	Corona, US	all-time snowfall	55.9 cm (22.0 in)	10.2 cm (4.0 in)	34 years	50 of 100 (Notable)
23 January 1977	Corona, US	daily rain	12.7 mm (0.5 in)	7.1 mm (0.28 in)	62 years	20 of 100 (Routine)
22 January 1977	Corona, US	daily rain	12.7 mm (0.5 in)	3.8 mm (0.15 in)	38 years	20 of 100 (Routine)
2 January 1977	Corona, US	daily rain	15.2 mm (0.6 in)	2.5 mm (0.10 in)	4 years	11 of 100 (Routine)
2 January 1977	Corona, US	daily snowfall	15.2 cm (6.0 in)	2.5 cm (1.0 in)	4 years	10 of 100 (Routine)
1 January 1977	Corona, US	daily low min	-20.0 C (-4.0 F)	0.6 C (1.1 F)	7 years	9 of 100 (Routine)
17 December 1976	Corona, US	daily low min	-15.0 C (5.0 F)	0.6 C (1.1 F)	48 years	21 of 100 (Routine)
30 November 1976	Corona, US	daily low max	-2.2 C (28.0 F)	0.5 C (0.9 F)	42 years	18 of 100 (Routine)
30 November 1976	Corona, US	daily low min (Tie)	-21.1 C (-6.0 F)	tie	58 years	5 of 100 (Routine)
29 November 1976	Corona, US	daily low min	-21.1 C (-6.0 F)	7.8 C (14.0 F)	42 years	33 of 100 (Routine)
29 November 1976	Corona, US	monthly low max (Tie)	-15.6 C (3.9 F)	tie	0 years	4 of 100 (Routine)
28 November 1976	Corona, US	monthly low max	-15.6 C (3.9 F)	7.8 C (14.0 F)	58 years	47 of 100 (Notable)
14 November 1976	Corona, US	daily rain	10.2 mm (0.4 in)	2.6 mm (0.10 in)	52 years	20 of 100 (Routine)
14 November 1976	Corona, US	daily low max	-5.6 C (21.9 F)	1.7 C (3.1 F)	15 years	13 of 100 (Routine)
13 November 1976	Corona, US	daily low max	-6.7 C (19.9 F)	2.8 C (5.0 F)	60 years	29 of 100 (Routine)
12 November 1976	Corona, US	daily low max	0.0 C (32.0 F)	0.6 C (1.1 F)	56 years	23 of 100 (Routine)
28 October 1976	Corona, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	46 years	24 of 100 (Routine)
28 October 1976	Corona, US	monthly low max	-2.2 C (28.0 F)	1.1 C (2.0 F)	17 years	23 of 100 (Routine)
27 October 1976	Corona, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	65 years	30 of 100 (Routine)
27 October 1976	Corona, US	daily low max	2.8 C (37.0 F)	0.5 C (0.9 F)	7 years	9 of 100 (Routine)

Climate Trend

48 complete years, 1912 to 1971

One stripe for each of 48 complete years at Corona, 1912 to 1971. Blue stripes are years cooler than the station's own mean of 10.8 C (51.4 F); red stripes are warmer. The coolest year was 1964, at 9.4 C (48.8 F), and the warmest was 1936, at 12.4 C (54.3 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Corona as warming stripes, 1912 to 1971
Year	Annual mean temperature	Difference from the station mean
1912	10.8 C	0.00 C
1913	10.2 C	-0.59 C
1914	11.1 C	+0.32 C
1915	10.4 C	-0.32 C
1916	11.8 C	+1.01 C
1917	11.4 C	+0.63 C
1918	11.3 C	+0.54 C
1920	10.7 C	-0.08 C
1921	11.8 C	+1.02 C
1922	11.3 C	+0.56 C
1923	10.6 C	-0.18 C
1924	11.0 C	+0.28 C
1925	11.2 C	+0.41 C
1926	9.9 C	-0.84 C
1927	11.4 C	+0.62 C
1929	10.2 C	-0.61 C
1930	9.9 C	-0.89 C
1931	11.1 C	+0.36 C
1932	9.6 C	-1.14 C
1933	10.2 C	-0.57 C
1934	12.4 C	+1.60 C
1935	10.2 C	-0.55 C
1936	12.4 C	+1.62 C
1937	11.3 C	+0.55 C
1938	11.3 C	+0.53 C
1939	10.4 C	-0.35 C
1940	11.0 C	+0.19 C
1943	11.8 C	+1.06 C
1944	11.0 C	+0.20 C
1945	11.4 C	+0.67 C
1946	10.8 C	-0.01 C
1947	11.2 C	+0.46 C
1948	10.5 C	-0.28 C
1952	10.9 C	+0.15 C
1953	11.2 C	+0.46 C
1954	11.9 C	+1.12 C
1955	10.5 C	-0.27 C
1956	10.7 C	-0.06 C
1957	10.5 C	-0.28 C
1958	10.2 C	-0.52 C
1959	10.5 C	-0.27 C
1960	10.1 C	-0.68 C
1961	10.0 C	-0.74 C
1963	9.7 C	-1.10 C
1964	9.4 C	-1.41 C
1969	10.1 C	-0.67 C
1970	9.9 C	-0.87 C
1971	9.8 C	-0.95 C

The annual mean temperature here has fallen by 0.15 C (0.04 to 0.27) per decade over 1912 to 1971. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Corona
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.15 C (-0.27 to -0.04) per decade	-0.3 F (-0.5 to -0.1) per decade	1912 to 1971	48	Fall
Mean daily maximum	0.05 C (-0.12 to 0.22) per decade	0.1 F (-0.2 to 0.4) per decade	1912 to 1971	48	Not clearly different from zero
Mean daily minimum	-0.4 C (-0.5 to -0.2) per decade	-0.6 F (-0.9 to -0.4) per decade	1912 to 1971	48	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

1909 to 1977

Yearly extremes at Corona: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1944	34.4 C (93.9 F)	67
Coldest night (TNn)	-35.6 C (-32.1 F)	1971	-20.6 C (-5.1 F)	67
Wettest day (Rx1day)	71.6 mm (2.8 in)	1941	32.8 mm (1.3 in)	69
Wettest five days (Rx5day)	115.4 mm (4.5 in)	1941	54.7 mm (2.2 in)	69
Longest dry spell (CDD)	93 days	1925	44 days	69

Hottest day (TXx)

The hottest day of the year at Corona, 1909 to 1977. The record is 43.3 C (109.9 F) in 1944, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Corona by year
Year	Hottest day (TXx)
1909	n/a
1910	n/a
1911	32.2 C (90.0 F)
1912	33.3 C (91.9 F)
1913	33.3 C (91.9 F)
1914	32.2 C (90.0 F)
1915	33.3 C (91.9 F)
1916	34.4 C (93.9 F)
1917	40.6 C (105.1 F)
1918	38.9 C (102.0 F)
1919	32.2 C (90.0 F)
1920	31.7 C (89.1 F)
1921	32.2 C (90.0 F)
1922	37.8 C (100.0 F)
1923	34.4 C (93.9 F)
1924	36.7 C (98.1 F)
1925	35.0 C (95.0 F)
1926	31.7 C (89.1 F)
1927	32.8 C (91.0 F)
1928	36.1 C (97.0 F)
1929	32.8 C (91.0 F)
1930	32.8 C (91.0 F)
1931	31.7 C (89.1 F)
1932	32.2 C (90.0 F)
1933	30.6 C (87.1 F)
1934	36.7 C (98.1 F)
1935	32.2 C (90.0 F)
1936	35.0 C (95.0 F)
1937	36.7 C (98.1 F)
1938	33.3 C (91.9 F)
1939	35.0 C (95.0 F)
1940	33.3 C (91.9 F)
1941	37.8 C (100.0 F)
1942	34.4 C (93.9 F)
1943	39.4 C (102.9 F)
1944	43.3 C (109.9 F)
1945	35.0 C (95.0 F)
1946	35.0 C (95.0 F)
1947	34.4 C (93.9 F)
1948	35.0 C (95.0 F)
1949	35.6 C (96.1 F)
1950	34.4 C (93.9 F)
1951	36.1 C (97.0 F)
1952	35.0 C (95.0 F)
1953	35.0 C (95.0 F)
1954	35.0 C (95.0 F)
1955	32.2 C (90.0 F)
1956	33.3 C (91.9 F)
1957	35.0 C (95.0 F)
1958	35.6 C (96.1 F)
1959	32.8 C (91.0 F)
1960	36.1 C (97.0 F)
1961	33.3 C (91.9 F)
1962	35.0 C (95.0 F)
1963	34.4 C (93.9 F)
1964	35.0 C (95.0 F)
1965	31.7 C (89.1 F)
1966	33.3 C (91.9 F)
1967	33.3 C (91.9 F)
1968	33.9 C (93.0 F)
1969	33.9 C (93.0 F)
1970	32.8 C (91.0 F)
1971	33.9 C (93.0 F)
1972	34.4 C (93.9 F)
1973	35.0 C (95.0 F)
1974	34.4 C (93.9 F)
1975	32.2 C (90.0 F)
1976	32.8 C (91.0 F)
1977	16.1 C (61.0 F)

Coldest night (TNn)

The coldest night of the year at Corona, 1909 to 1977. The record is -35.6 C (-32.1 F) in 1971, marked on the chart; the median year is -20.6 C (-5.1 F).

Coldest night (TNn) at Corona by year
Year	Coldest night (TNn)
1909	n/a
1910	n/a
1911	-15.0 C (5.0 F)
1912	-24.4 C (-11.9 F)
1913	-24.4 C (-11.9 F)
1914	-16.7 C (1.9 F)
1915	-22.2 C (-8.0 F)
1916	-20.0 C (-4.0 F)
1917	-17.8 C (0.0 F)
1918	-25.6 C (-14.1 F)
1919	-21.7 C (-7.1 F)
1920	-15.0 C (5.0 F)
1921	-16.7 C (1.9 F)
1922	-19.4 C (-2.9 F)
1923	-20.0 C (-4.0 F)
1924	-21.1 C (-6.0 F)
1925	-16.7 C (1.9 F)
1926	-21.1 C (-6.0 F)
1927	-21.1 C (-6.0 F)
1928	-17.8 C (0.0 F)
1929	-24.4 C (-11.9 F)
1930	-22.8 C (-9.0 F)
1931	-18.9 C (-2.0 F)
1932	-15.6 C (3.9 F)
1933	-24.4 C (-11.9 F)
1934	-14.4 C (6.1 F)
1935	-20.6 C (-5.1 F)
1936	-13.3 C (8.1 F)
1937	-16.7 C (1.9 F)
1938	-23.9 C (-11.0 F)
1939	-23.9 C (-11.0 F)
1940	-20.6 C (-5.1 F)
1941	-11.7 C (10.9 F)
1942	-20.6 C (-5.1 F)
1943	-21.1 C (-6.0 F)
1944	-18.9 C (-2.0 F)
1945	-16.1 C (3.0 F)
1946	-15.6 C (3.9 F)
1947	-26.7 C (-16.1 F)
1948	-24.4 C (-11.9 F)
1949	-27.2 C (-17.0 F)
1950	-12.2 C (10.0 F)
1951	-20.6 C (-5.1 F)
1952	-17.2 C (1.0 F)
1953	-20.6 C (-5.1 F)
1954	-19.4 C (-2.9 F)
1955	-17.2 C (1.0 F)
1956	-18.9 C (-2.0 F)
1957	-17.8 C (0.0 F)
1958	-21.7 C (-7.1 F)
1959	-18.9 C (-2.0 F)
1960	-20.6 C (-5.1 F)
1961	-23.3 C (-9.9 F)
1962	-31.1 C (-24.0 F)
1963	-32.2 C (-26.0 F)
1964	-26.7 C (-16.1 F)
1965	-23.3 C (-9.9 F)
1966	-22.2 C (-8.0 F)
1967	-18.9 C (-2.0 F)
1968	-19.4 C (-2.9 F)
1969	-20.0 C (-4.0 F)
1970	-24.4 C (-11.9 F)
1971	-35.6 C (-32.1 F)
1972	-21.1 C (-6.0 F)
1973	-18.3 C (-0.9 F)
1974	-16.7 C (1.9 F)
1975	-23.3 C (-9.9 F)
1976	-21.1 C (-6.0 F)
1977	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at Corona, 1909 to 1977. The record is 71.6 mm (2.8 in) in 1941, marked on the chart; the median year is 32.8 mm (1.3 in).

Wettest day (Rx1day) at Corona by year
Year	Wettest day (Rx1day)
1909	25.4 mm (1.0 in)
1910	27.9 mm (1.1 in)
1911	33.3 mm (1.3 in)
1912	24.4 mm (1.0 in)
1913	24.4 mm (1.0 in)
1914	48.8 mm (1.9 in)
1915	36.8 mm (1.4 in)
1916	20.3 mm (0.8 in)
1917	22.9 mm (0.9 in)
1918	31.8 mm (1.3 in)
1919	39.9 mm (1.6 in)
1920	41.4 mm (1.6 in)
1921	36.8 mm (1.4 in)
1922	19.1 mm (0.8 in)
1923	29.2 mm (1.1 in)
1924	28.4 mm (1.1 in)
1925	27.4 mm (1.1 in)
1926	39.4 mm (1.6 in)
1927	30.7 mm (1.2 in)
1928	28.7 mm (1.1 in)
1929	44.5 mm (1.8 in)
1930	29.2 mm (1.1 in)
1931	37.6 mm (1.5 in)
1932	24.6 mm (1.0 in)
1933	19.8 mm (0.8 in)
1934	28.4 mm (1.1 in)
1935	25.4 mm (1.0 in)
1936	39.4 mm (1.6 in)
1937	53.3 mm (2.1 in)
1938	26.7 mm (1.1 in)
1939	30.5 mm (1.2 in)
1940	50.8 mm (2.0 in)
1941	71.6 mm (2.8 in)
1942	55.9 mm (2.2 in)
1943	34.5 mm (1.4 in)
1944	48.8 mm (1.9 in)
1945	38.4 mm (1.5 in)
1946	44.5 mm (1.8 in)
1947	29.2 mm (1.1 in)
1948	31.8 mm (1.3 in)
1949	21.1 mm (0.8 in)
1950	48.3 mm (1.9 in)
1951	34.0 mm (1.3 in)
1952	34.3 mm (1.4 in)
1953	17.8 mm (0.7 in)
1954	52.1 mm (2.1 in)
1955	37.1 mm (1.5 in)
1956	21.6 mm (0.9 in)
1957	29.7 mm (1.2 in)
1958	38.1 mm (1.5 in)
1959	45.7 mm (1.8 in)
1960	30.5 mm (1.2 in)
1961	42.7 mm (1.7 in)
1962	58.4 mm (2.3 in)
1963	19.1 mm (0.8 in)
1964	32.3 mm (1.3 in)
1965	39.1 mm (1.5 in)
1966	66.5 mm (2.6 in)
1967	27.9 mm (1.1 in)
1968	50.8 mm (2.0 in)
1969	40.1 mm (1.6 in)
1970	18.8 mm (0.7 in)
1971	32.8 mm (1.3 in)
1972	39.9 mm (1.6 in)
1973	28.7 mm (1.1 in)
1974	41.4 mm (1.6 in)
1975	30.5 mm (1.2 in)
1976	39.4 mm (1.6 in)
1977	15.2 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Corona, 1909 to 1977. The record is 115.4 mm (4.5 in) in 1941, marked on the chart; the median year is 54.7 mm (2.2 in).

Wettest five days (Rx5day) at Corona by year
Year	Wettest five days (Rx5day)
1909	47.3 mm (1.9 in)
1910	40.6 mm (1.6 in)
1911	64.5 mm (2.5 in)
1912	36.6 mm (1.4 in)
1913	45.7 mm (1.8 in)
1914	65.3 mm (2.6 in)
1915	57.1 mm (2.2 in)
1916	68.6 mm (2.7 in)
1917	21.6 mm (0.9 in)
1918	31.8 mm (1.3 in)
1919	58.9 mm (2.3 in)
1920	56.4 mm (2.2 in)
1921	63.4 mm (2.5 in)
1922	28.3 mm (1.1 in)
1923	45.9 mm (1.8 in)
1924	50.0 mm (2.0 in)
1925	60.1 mm (2.4 in)
1926	54.7 mm (2.2 in)
1927	81.2 mm (3.2 in)
1928	33.1 mm (1.3 in)
1929	82.7 mm (3.3 in)
1930	52.1 mm (2.1 in)
1931	60.4 mm (2.4 in)
1932	50.9 mm (2.0 in)
1933	34.0 mm (1.3 in)
1934	46.3 mm (1.8 in)
1935	41.7 mm (1.6 in)
1936	44.5 mm (1.8 in)
1937	107.9 mm (4.2 in)
1938	88.9 mm (3.5 in)
1939	62.8 mm (2.5 in)
1940	77.9 mm (3.1 in)
1941	115.4 mm (4.5 in)
1942	75.0 mm (3.0 in)
1943	54.0 mm (2.1 in)
1944	51.3 mm (2.0 in)
1945	45.6 mm (1.8 in)
1946	54.7 mm (2.2 in)
1947	29.2 mm (1.1 in)
1948	49.6 mm (2.0 in)
1949	43.2 mm (1.7 in)
1950	74.2 mm (2.9 in)
1951	75.6 mm (3.0 in)
1952	46.5 mm (1.8 in)
1953	45.5 mm (1.8 in)
1954	80.0 mm (3.1 in)
1955	73.9 mm (2.9 in)
1956	25.4 mm (1.0 in)
1957	42.1 mm (1.7 in)
1958	54.9 mm (2.2 in)
1959	70.1 mm (2.8 in)
1960	60.5 mm (2.4 in)
1961	110.2 mm (4.3 in)
1962	88.9 mm (3.5 in)
1963	38.6 mm (1.5 in)
1964	57.7 mm (2.3 in)
1965	48.8 mm (1.9 in)
1966	76.2 mm (3.0 in)
1967	64.7 mm (2.5 in)
1968	60.5 mm (2.4 in)
1969	47.6 mm (1.9 in)
1970	30.5 mm (1.2 in)
1971	57.5 mm (2.3 in)
1972	59.6 mm (2.3 in)
1973	49.8 mm (2.0 in)
1974	73.1 mm (2.9 in)
1975	50.8 mm (2.0 in)
1976	59.2 mm (2.3 in)
1977	40.6 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Corona, 1909 to 1977. The record is 93 days in 1925, marked on the chart; the median year is 44 days.

Longest dry spell (CDD) at Corona by year
Year	Longest dry spell (CDD)
1909	41 days
1910	61 days
1911	31 days
1912	41 days
1913	44 days
1914	51 days
1915	55 days
1916	60 days
1917	52 days
1918	64 days
1919	39 days
1920	61 days
1921	41 days
1922	53 days
1923	43 days
1924	54 days
1925	93 days
1926	35 days
1927	89 days
1928	50 days
1929	44 days
1930	35 days
1931	33 days
1932	44 days
1933	44 days
1934	77 days
1935	37 days
1936	55 days
1937	57 days
1938	93 days
1939	51 days
1940	31 days
1941	26 days
1942	48 days
1943	91 days
1944	31 days
1945	54 days
1946	41 days
1947	50 days
1948	73 days
1949	42 days
1950	61 days
1951	57 days
1952	46 days
1953	47 days
1954	41 days
1955	58 days
1956	63 days
1957	31 days
1958	32 days
1959	39 days
1960	36 days
1961	42 days
1962	41 days
1963	37 days
1964	38 days
1965	24 days
1966	83 days
1967	65 days
1968	51 days
1969	28 days
1970	32 days
1971	62 days
1972	42 days
1973	41 days
1974	27 days
1975	44 days
1976	40 days
1977	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.

Frost Dates and Growing Season

48 years with a frost

Across 48 years with a frost, the median last spring frost at Corona falls on 8 May and the median first autumn frost on 6 October, which leaves a median of 157 days between them.

Fitted over all years, the growing season changes by -2.2 days per decade at this station.

Frost dates and growing season at Corona
Measure	Median, all years	Earliest period	Recent period (1932 to 1971)	Recent against earliest	Fitted trend
Last spring frost	8 May	n/a	7 May	n/a	+0.9 days per decade
First autumn frost	6 October	n/a	6 October	n/a	-1.3 days per decade
Growing days	157 days	n/a	155 days	n/a	-2.2 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

64 years, 1910 to 1976

A day with at least 33.5 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 71.5 mm (2.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Corona: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.5 mm (1.3 in)
5 years	43.8 mm (1.7 in)
10 years	50.6 mm (2.0 in)
25 years	59.1 mm (2.3 in)
50 years	65.3 mm (2.6 in)
100 years	71.5 mm (2.8 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 1910 to 1976.

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: 71.6 mm (2.8 in) in 1941; 66.5 mm (2.6 in) in 1966; 58.4 mm (2.3 in) in 1962.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Corona, at 1923. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1923 ran 0.6 C (1.1 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Corona, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1923	-0.6	-1.1	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.

Download the Data

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