Hawthorne AP Weather Records (USC00263515)

Record envelope, standing records and threshold days for Hawthorne AP (USC00263515), Nevada, United States, with 105 years of record.

Key Facts for Hawthorne AP

Hawthorne AP (USC00263515) is a weather station in Nevada, United States at 38.55 latitude and -118.67 longitude, 1,286 m (4,220 ft) above sea level.
The station reports from 1887 to 1991, 105 years of record.
1,464 records set at Hawthorne AP still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hawthorne AP tied a daily record high maximum temperature of 38.9 C (102.0 F) on 30 July 1991.

About the Station

Location: Nevada, United States, 38.55 latitude, -118.67 longitude.
Elevation: 1,286 m (4,220 ft).
Period of record: 1887 to 1991, 105 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 Hawthorne AP. 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 Hawthorne AP, 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)	-21.1 C (-6.0 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-18.3 C (-0.9 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-9.4 C (15.1 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)	-0.6 C (30.9 F)	n/a	n/a
Jul	42.8 C (109.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	43.3 C (109.9 F)	3.3 C (37.9 F)	n/a	n/a
Sep	40.0 C (104.0 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-8.3 C (17.1 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-23.3 C (-9.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hawthorne AP still stand. 1969 holds the most, with 54.

Standing records at Hawthorne AP by the year they were set
Year set	Standing records
1887	9
1888	14
1889	14
1890	16
1891	25
1892	23
1893	14
1894	20
1895	33
1896	29
1897	39
1898	20
1899	28
1900	17
1901	8
1902	15
1903	31
1904	12
1905	3
1912	11
1938	22
1939	22
1940	22
1941	24
1942	16
1943	20
1944	15
1945	21
1946	15
1947	18
1948	16
1949	29
1950	34
1951	21
1952	9
1953	19
1957	21
1958	17
1959	21
1960	17
1961	8
1965	25
1966	48
1967	49
1968	40
1969	54
1970	28
1971	39
1972	37
1973	21
1974	14
1975	25
1976	22
1977	15
1978	21
1979	10
1980	15
1981	21
1982	18
1983	13
1984	17
1985	21
1986	23
1987	26
1988	13
1989	35
1990	21
1991	5

All-Time Record Progression

5 new records

5 all-time records were set at Hawthorne AP between 25 July 1966 and 22 December 1990. Each dot is a new record.

When Hawthorne AP set new all-time records
Date	Kind	Detail
1966-07-25	Record high maximum temperature	Record high maximum temperature 42.8 C (109.0 F)
1969-08-24	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
1972-12-11	Record low minimum temperature	Record low minimum temperature -23.3 C (-9.9 F)
1989-02-06	Record low maximum temperature	Record low maximum temperature -11.1 C (12.0 F)
1990-12-22	Record low maximum temperature	Record low maximum temperature -11.7 C (10.9 F)

Wettest Day of Each Month

Oct: 76.2 mm (3.0 in)

The wettest day on record for each calendar month at Hawthorne AP. The most was 76.2 mm (3.0 in) on 22 October 1889.

Record daily precipitation for each month at Hawthorne AP
Month	Record daily precipitation (mm)	Date
Jan	32.8 mm (1.3 in)	21 January 1943
Feb	20.3 mm (0.8 in)	1 February 1905
Mar	19.8 mm (0.8 in)	26 March 1939
Apr	21.8 mm (0.9 in)	25 April 1938
May	24.9 mm (1.0 in)	30 May 1945
Jun	37.1 mm (1.5 in)	9 June 1977
Jul	26.7 mm (1.1 in)	18 July 1976
Aug	40.6 mm (1.6 in)	16 August 1889
Sep	31.8 mm (1.3 in)	4 September 1967
Oct	76.2 mm (3.0 in)	22 October 1889
Nov	71.1 mm (2.8 in)	18 November 1889
Dec	17.5 mm (0.7 in)	24 December 1892

Period of Record Coverage

1887 to 1991

68 years of record at Hawthorne AP, 1887 to 1991. 17 years have data for under 90 percent of days and are left out of rankings: 1887, 1888, 1889, 1890, 1902, 1905, 1912, 1942 and others.

Days with data per year at Hawthorne AP
Year	Days with data	Share of year	Complete
1887	37	10%	No
1888	99	27%	No
1889	210	58%	No
1890	172	47%	No
1891	365	100%	Yes
1892	366	100%	Yes
1893	365	100%	Yes
1894	365	100%	Yes
1895	365	100%	Yes
1896	365	100%	Yes
1897	365	100%	Yes
1898	365	100%	Yes
1899	365	100%	Yes
1900	365	100%	Yes
1901	345	95%	Yes
1902	296	81%	No
1903	364	100%	Yes
1904	363	99%	Yes
1905	201	55%	No
1912	282	77%	No
1938	334	92%	Yes
1939	361	99%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	306	84%	No
1943	357	98%	Yes
1944	365	100%	Yes
1945	365	100%	Yes
1946	362	99%	Yes
1947	364	100%	Yes
1948	365	100%	Yes
1949	364	100%	Yes
1950	364	100%	Yes
1951	261	72%	No
1952	227	62%	No
1953	305	84%	No
1957	185	51%	No
1958	328	90%	No
1959	354	97%	Yes
1960	364	99%	Yes
1961	177	48%	No
1965	242	66%	No
1966	289	79%	No
1967	362	99%	Yes
1968	346	95%	Yes
1969	334	92%	Yes
1970	348	95%	Yes
1971	341	93%	Yes
1972	360	98%	Yes
1973	335	92%	Yes
1974	332	91%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	356	98%	Yes
1978	365	100%	Yes
1979	361	99%	Yes
1980	361	99%	Yes
1981	365	100%	Yes
1982	362	99%	Yes
1983	363	99%	Yes
1984	364	99%	Yes
1985	355	97%	Yes
1986	360	99%	Yes
1987	358	98%	Yes
1988	346	95%	Yes
1989	362	99%	Yes
1990	346	95%	Yes
1991	137	38%	No

Latest Records

Latest records at Hawthorne AP
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1991	Hawthorne AP, US	daily high max (Tie)	38.9 C (102.0 F)	tie	22 years	4 of 100 (Routine)
7 July 1991	Hawthorne AP, US	daily high min	19.4 C (66.9 F)	1.1 C (2.0 F)	94 years	41 of 100 (Notable)
6 July 1991	Hawthorne AP, US	daily high min	19.4 C (66.9 F)	1.1 C (2.0 F)	48 years	27 of 100 (Routine)
6 July 1991	Hawthorne AP, US	daily high max	39.4 C (102.9 F)	1.1 C (2.0 F)	25 years	20 of 100 (Routine)
4 July 1991	Hawthorne AP, US	daily high max (Tie)	39.4 C (102.9 F)	tie	48 years	6 of 100 (Routine)
28 June 1991	Hawthorne AP, US	daily rain	4.6 mm (0.18 in)	4.1 mm (0.16 in)	1 year	17 of 100 (Routine)
12 June 1991	Hawthorne AP, US	daily high max (Tie)	37.2 C (99.0 F)	tie	22 years	4 of 100 (Routine)
25 May 1991	Hawthorne AP, US	daily high min	18.3 C (64.9 F)	2.7 C (4.9 F)	9 years	18 of 100 (Routine)
21 March 1991	Hawthorne AP, US	daily snow depth (Tie)	2.5 cm (1.0 in)	tie	92 years	9 of 100 (Routine)
20 March 1991	Hawthorne AP, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	44 years	20 of 100 (Routine)
3 March 1991	Hawthorne AP, US	daily high min	6.7 C (44.1 F)	1.1 C (2.0 F)	44 years	25 of 100 (Routine)
1 February 1991	Hawthorne AP, US	daily high max (Tie)	17.2 C (63.0 F)	tie	4 years	2 of 100 (Routine)
12 January 1991	Hawthorne AP, US	daily snow depth (Tie)	15.2 cm (6.0 in)	tie	41 years	5 of 100 (Routine)
11 January 1991	Hawthorne AP, US	daily snow depth	15.2 cm (6.0 in)	2.5 cm (1.0 in)	41 years	24 of 100 (Routine)
10 January 1991	Hawthorne AP, US	daily snow depth	15.2 cm (6.0 in)	10.1 cm (4.0 in)	41 years	34 of 100 (Routine)
6 January 1991	Hawthorne AP, US	all-time snow depth (Tie)	22.9 cm (9.0 in)	tie	41 years	10 of 100 (Routine)
5 January 1991	Hawthorne AP, US	all-time snow depth (Tie)	22.9 cm (9.0 in)	tie	41 years	10 of 100 (Routine)
4 January 1991	Hawthorne AP, US	daily rain	10.9 mm (0.4 in)	4.8 mm (0.19 in)	95 years	20 of 100 (Routine)
4 January 1991	Hawthorne AP, US	all-time snow depth (Tie)	22.9 cm (9.0 in)	tie	41 years	10 of 100 (Routine)
30 December 1990	Hawthorne AP, US	daily low min	-19.4 C (-2.9 F)	5.5 C (9.9 F)	89 years	48 of 100 (Notable)

Climate Trend

44 complete years, 1891 to 1989

One stripe for each of 44 complete years at Hawthorne AP, 1891 to 1989. Blue stripes are years cooler than the station's own mean of 12.3 C (54.2 F); red stripes are warmer. The coolest year was 1895, at 11.0 C (51.9 F), and the warmest was 1981, at 14.4 C (58.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Hawthorne AP as warming stripes, 1891 to 1989
Year	Annual mean temperature	Difference from the station mean
1891	11.8 C	-0.54 C
1892	11.7 C	-0.69 C
1894	11.1 C	-1.23 C
1895	11.0 C	-1.32 C
1896	12.1 C	-0.23 C
1897	11.8 C	-0.60 C
1898	11.6 C	-0.77 C
1899	11.6 C	-0.80 C
1900	12.2 C	-0.14 C
1901	12.3 C	-0.02 C
1903	11.0 C	-1.32 C
1904	12.1 C	-0.28 C
1939	12.2 C	-0.18 C
1940	12.8 C	+0.48 C
1941	11.6 C	-0.75 C
1943	13.5 C	+1.18 C
1944	12.0 C	-0.32 C
1945	12.4 C	+0.03 C
1946	12.7 C	+0.31 C
1947	12.8 C	+0.44 C
1948	12.0 C	-0.39 C
1949	11.9 C	-0.50 C
1950	13.9 C	+1.50 C
1959	11.9 C	-0.41 C
1960	11.8 C	-0.58 C
1967	13.3 C	+0.98 C
1968	13.5 C	+1.11 C
1970	13.3 C	+0.92 C
1971	12.1 C	-0.28 C
1972	12.5 C	+0.13 C
1975	11.9 C	-0.48 C
1976	11.6 C	-0.72 C
1977	12.6 C	+0.28 C
1978	12.1 C	-0.22 C
1979	12.6 C	+0.26 C
1980	12.8 C	+0.44 C
1981	14.4 C	+2.07 C
1982	12.0 C	-0.31 C
1983	12.9 C	+0.56 C
1984	12.7 C	+0.34 C
1985	11.8 C	-0.55 C
1986	13.6 C	+1.24 C
1987	13.0 C	+0.67 C
1989	13.0 C	+0.64 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1891 to 1989. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hawthorne AP
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.3) per decade	1891 to 1989	44	Rise
Mean daily maximum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1891 to 1989	44	Rise
Mean daily minimum	0.02 C (-0.08 to 0.12) per decade	0.04 F (-0.14 to 0.22) per decade	1891 to 1989	44	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

1887 to 1991

Yearly extremes at Hawthorne AP: 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)	1969	38.9 C (102.0 F)	68
Coldest night (TNn)	-23.3 C (-9.9 F)	1972	-15.0 C (5.0 F)	68
Wettest day (Rx1day)	76.2 mm (3.0 in)	1889	17.5 mm (0.7 in)	67
Wettest five days (Rx5day)	88.9 mm (3.5 in)	1889	23.4 mm (0.9 in)	67
Longest dry spell (CDD)	160 days	1947	64 days	67

Hottest day (TXx)

The hottest day of the year at Hawthorne AP, 1887 to 1991. The record is 43.3 C (109.9 F) in 1969, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Hawthorne AP by year
Year	Hottest day (TXx)
1887	23.3 C (73.9 F)
1888	28.9 C (84.0 F)
1889	38.9 C (102.0 F)
1890	26.1 C (79.0 F)
1891	36.7 C (98.1 F)
1892	36.7 C (98.1 F)
1893	36.7 C (98.1 F)
1894	36.1 C (97.0 F)
1895	38.9 C (102.0 F)
1896	37.8 C (100.0 F)
1897	36.1 C (97.0 F)
1898	38.3 C (100.9 F)
1899	37.2 C (99.0 F)
1900	37.8 C (100.0 F)
1901	38.3 C (100.9 F)
1902	37.2 C (99.0 F)
1903	37.8 C (100.0 F)
1904	37.2 C (99.0 F)
1905	38.9 C (102.0 F)
1912	36.7 C (98.1 F)
1938	37.8 C (100.0 F)
1939	38.3 C (100.9 F)
1940	39.4 C (102.9 F)
1941	39.4 C (102.9 F)
1942	40.0 C (104.0 F)
1943	37.8 C (100.0 F)
1944	37.8 C (100.0 F)
1945	38.9 C (102.0 F)
1946	38.9 C (102.0 F)
1947	38.3 C (100.9 F)
1948	37.2 C (99.0 F)
1949	37.8 C (100.0 F)
1950	41.7 C (107.1 F)
1951	39.4 C (102.9 F)
1952	39.4 C (102.9 F)
1953	38.3 C (100.9 F)
1957	39.4 C (102.9 F)
1958	37.8 C (100.0 F)
1959	39.4 C (102.9 F)
1960	40.6 C (105.1 F)
1961	40.6 C (105.1 F)
1965	40.6 C (105.1 F)
1966	42.8 C (109.0 F)
1967	42.2 C (108.0 F)
1968	41.7 C (107.1 F)
1969	43.3 C (109.9 F)
1970	41.7 C (107.1 F)
1971	42.2 C (108.0 F)
1972	40.0 C (104.0 F)
1973	40.0 C (104.0 F)
1974	42.2 C (108.0 F)
1975	41.1 C (106.0 F)
1976	38.9 C (102.0 F)
1977	38.3 C (100.9 F)
1978	39.4 C (102.9 F)
1979	39.4 C (102.9 F)
1980	40.6 C (105.1 F)
1981	40.6 C (105.1 F)
1982	38.3 C (100.9 F)
1983	38.3 C (100.9 F)
1984	38.3 C (100.9 F)
1985	40.6 C (105.1 F)
1986	38.9 C (102.0 F)
1987	38.3 C (100.9 F)
1988	40.0 C (104.0 F)
1989	40.6 C (105.1 F)
1990	40.0 C (104.0 F)
1991	39.4 C (102.9 F)

Coldest night (TNn)

The coldest night of the year at Hawthorne AP, 1887 to 1991. The record is -23.3 C (-9.9 F) in 1972, marked on the chart; the median year is -15.0 C (5.0 F).

Coldest night (TNn) at Hawthorne AP by year
Year	Coldest night (TNn)
1887	-16.7 C (1.9 F)
1888	-17.8 C (0.0 F)
1889	-5.0 C (23.0 F)
1890	-15.6 C (3.9 F)
1891	-17.8 C (0.0 F)
1892	-11.7 C (10.9 F)
1893	-11.1 C (12.0 F)
1894	-20.6 C (-5.1 F)
1895	-16.1 C (3.0 F)
1896	-8.9 C (16.0 F)
1897	-12.8 C (9.0 F)
1898	-20.0 C (-4.0 F)
1899	-16.7 C (1.9 F)
1900	-16.1 C (3.0 F)
1901	-14.4 C (6.1 F)
1902	-9.4 C (15.1 F)
1903	-15.0 C (5.0 F)
1904	-13.3 C (8.1 F)
1905	-16.1 C (3.0 F)
1912	-9.4 C (15.1 F)
1938	-15.0 C (5.0 F)
1939	-12.8 C (9.0 F)
1940	-15.6 C (3.9 F)
1941	-10.6 C (12.9 F)
1942	-13.3 C (8.1 F)
1943	-10.0 C (14.0 F)
1944	-9.4 C (15.1 F)
1945	-12.8 C (9.0 F)
1946	-10.0 C (14.0 F)
1947	-11.1 C (12.0 F)
1948	-16.1 C (3.0 F)
1949	-21.1 C (-6.0 F)
1950	-13.9 C (7.0 F)
1951	-13.9 C (7.0 F)
1952	-10.6 C (12.9 F)
1953	-13.3 C (8.1 F)
1957	-13.9 C (7.0 F)
1958	-13.3 C (8.1 F)
1959	-16.7 C (1.9 F)
1960	-18.3 C (-0.9 F)
1961	-15.0 C (5.0 F)
1965	-14.4 C (6.1 F)
1966	-15.0 C (5.0 F)
1967	-18.3 C (-0.9 F)
1968	-18.9 C (-2.0 F)
1969	-12.8 C (9.0 F)
1970	-17.8 C (0.0 F)
1971	-20.0 C (-4.0 F)
1972	-23.3 C (-9.9 F)
1973	-16.7 C (1.9 F)
1974	-15.0 C (5.0 F)
1975	-17.2 C (1.0 F)
1976	-12.8 C (9.0 F)
1977	-15.0 C (5.0 F)
1978	-15.6 C (3.9 F)
1979	-15.6 C (3.9 F)
1980	-9.4 C (15.1 F)
1981	-6.7 C (19.9 F)
1982	-12.8 C (9.0 F)
1983	-8.9 C (16.0 F)
1984	-13.3 C (8.1 F)
1985	-15.6 C (3.9 F)
1986	-10.0 C (14.0 F)
1987	-16.1 C (3.0 F)
1988	-15.0 C (5.0 F)
1989	-22.8 C (-9.0 F)
1990	-22.8 C (-9.0 F)
1991	-13.9 C (7.0 F)

Wettest day (Rx1day)

The wettest day of the year at Hawthorne AP, 1887 to 1991. The record is 76.2 mm (3.0 in) in 1889, marked on the chart; the median year is 17.5 mm (0.7 in).

Wettest day (Rx1day) at Hawthorne AP by year
Year	Wettest day (Rx1day)
1887	n/a
1888	0.3 mm (0.01 in)
1889	76.2 mm (3.0 in)
1890	25.9 mm (1.0 in)
1891	24.1 mm (0.9 in)
1892	17.5 mm (0.7 in)
1893	11.7 mm (0.5 in)
1894	18.0 mm (0.7 in)
1895	14.5 mm (0.6 in)
1896	23.4 mm (0.9 in)
1897	16.3 mm (0.6 in)
1898	16.3 mm (0.6 in)
1899	5.6 mm (0.22 in)
1900	12.7 mm (0.5 in)
1901	13.2 mm (0.5 in)
1902	10.2 mm (0.4 in)
1903	20.3 mm (0.8 in)
1904	31.8 mm (1.3 in)
1905	20.3 mm (0.8 in)
1912	12.7 mm (0.5 in)
1938	21.8 mm (0.9 in)
1939	19.8 mm (0.8 in)
1940	15.7 mm (0.6 in)
1941	33.3 mm (1.3 in)
1942	5.1 mm (0.20 in)
1943	32.8 mm (1.3 in)
1944	13.7 mm (0.5 in)
1945	24.9 mm (1.0 in)
1946	14.7 mm (0.6 in)
1947	17.8 mm (0.7 in)
1948	9.4 mm (0.37 in)
1949	9.4 mm (0.37 in)
1950	16.0 mm (0.6 in)
1951	17.5 mm (0.7 in)
1952	14.5 mm (0.6 in)
1953	10.7 mm (0.4 in)
1957	17.3 mm (0.7 in)
1958	18.0 mm (0.7 in)
1959	10.2 mm (0.4 in)
1960	23.6 mm (0.9 in)
1961	16.5 mm (0.6 in)
1965	15.7 mm (0.6 in)
1966	19.1 mm (0.8 in)
1967	31.8 mm (1.3 in)
1968	13.2 mm (0.5 in)
1969	19.3 mm (0.8 in)
1970	27.2 mm (1.1 in)
1971	17.5 mm (0.7 in)
1972	32.5 mm (1.3 in)
1973	14.0 mm (0.6 in)
1974	29.2 mm (1.1 in)
1975	19.6 mm (0.8 in)
1976	26.7 mm (1.1 in)
1977	37.1 mm (1.5 in)
1978	17.8 mm (0.7 in)
1979	15.2 mm (0.6 in)
1980	9.9 mm (0.39 in)
1981	15.7 mm (0.6 in)
1982	25.9 mm (1.0 in)
1983	13.0 mm (0.5 in)
1984	18.5 mm (0.7 in)
1985	5.8 mm (0.23 in)
1986	20.3 mm (0.8 in)
1987	25.4 mm (1.0 in)
1988	13.5 mm (0.5 in)
1989	12.7 mm (0.5 in)
1990	19.6 mm (0.8 in)
1991	11.7 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hawthorne AP, 1887 to 1991. The record is 88.9 mm (3.5 in) in 1889, marked on the chart; the median year is 23.4 mm (0.9 in).

Wettest five days (Rx5day) at Hawthorne AP by year
Year	Wettest five days (Rx5day)
1887	n/a
1888	0.3 mm (0.01 in)
1889	88.9 mm (3.5 in)
1890	41.4 mm (1.6 in)
1891	28.2 mm (1.1 in)
1892	17.8 mm (0.7 in)
1893	8.6 mm (0.34 in)
1894	29.9 mm (1.2 in)
1895	20.9 mm (0.8 in)
1896	38.4 mm (1.5 in)
1897	17.8 mm (0.7 in)
1898	16.3 mm (0.6 in)
1899	8.4 mm (0.33 in)
1900	15.2 mm (0.6 in)
1901	17.3 mm (0.7 in)
1902	10.2 mm (0.4 in)
1903	27.9 mm (1.1 in)
1904	34.3 mm (1.4 in)
1905	20.3 mm (0.8 in)
1912	29.3 mm (1.2 in)
1938	30.5 mm (1.2 in)
1939	21.6 mm (0.9 in)
1940	28.2 mm (1.1 in)
1941	40.7 mm (1.6 in)
1942	7.6 mm (0.30 in)
1943	47.1 mm (1.9 in)
1944	13.7 mm (0.5 in)
1945	32.3 mm (1.3 in)
1946	19.8 mm (0.8 in)
1947	18.6 mm (0.7 in)
1948	21.9 mm (0.9 in)
1949	19.5 mm (0.8 in)
1950	26.4 mm (1.0 in)
1951	17.5 mm (0.7 in)
1952	16.3 mm (0.6 in)
1953	23.4 mm (0.9 in)
1957	20.1 mm (0.8 in)
1958	22.3 mm (0.9 in)
1959	12.5 mm (0.5 in)
1960	54.9 mm (2.2 in)
1961	25.9 mm (1.0 in)
1965	18.6 mm (0.7 in)
1966	29.5 mm (1.2 in)
1967	32.3 mm (1.3 in)
1968	13.2 mm (0.5 in)
1969	33.0 mm (1.3 in)
1970	27.2 mm (1.1 in)
1971	21.9 mm (0.9 in)
1972	38.3 mm (1.5 in)
1973	16.0 mm (0.6 in)
1974	54.1 mm (2.1 in)
1975	27.9 mm (1.1 in)
1976	30.0 mm (1.2 in)
1977	39.4 mm (1.6 in)
1978	31.5 mm (1.2 in)
1979	23.8 mm (0.9 in)
1980	15.5 mm (0.6 in)
1981	20.9 mm (0.8 in)
1982	30.0 mm (1.2 in)
1983	35.9 mm (1.4 in)
1984	20.3 mm (0.8 in)
1985	9.9 mm (0.39 in)
1986	33.2 mm (1.3 in)
1987	25.4 mm (1.0 in)
1988	26.9 mm (1.1 in)
1989	20.6 mm (0.8 in)
1990	34.1 mm (1.3 in)
1991	18.8 mm (0.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hawthorne AP, 1887 to 1991. The record is 160 days in 1947, marked on the chart; the median year is 64 days.

Longest dry spell (CDD) at Hawthorne AP by year
Year	Longest dry spell (CDD)
1887	n/a
1888	61 days
1889	49 days
1890	21 days
1891	45 days
1892	56 days
1893	67 days
1894	41 days
1895	62 days
1896	41 days
1897	70 days
1898	74 days
1899	65 days
1900	44 days
1901	42 days
1902	146 days
1903	105 days
1904	57 days
1905	61 days
1912	74 days
1938	62 days
1939	32 days
1940	70 days
1941	54 days
1942	112 days
1943	127 days
1944	100 days
1945	58 days
1946	67 days
1947	160 days
1948	95 days
1949	122 days
1950	160 days
1951	61 days
1952	109 days
1953	86 days
1957	94 days
1958	47 days
1959	101 days
1960	66 days
1961	49 days
1965	68 days
1966	66 days
1967	54 days
1968	60 days
1969	57 days
1970	61 days
1971	43 days
1972	66 days
1973	102 days
1974	136 days
1975	37 days
1976	41 days
1977	109 days
1978	88 days
1979	62 days
1980	37 days
1981	83 days
1982	38 days
1983	64 days
1984	47 days
1985	58 days
1986	106 days
1987	125 days
1988	63 days
1989	71 days
1990	74 days
1991	62 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

44 years with a frost

Across 44 years with a frost, the median last spring frost at Hawthorne AP falls on 28 April and the median first autumn frost on 15 October, which leaves a median of 167 days between them.

Fitted over all years, the growing season changes by +1.4 days per decade at this station.

Frost dates and growing season at Hawthorne AP
Measure	Median, all years	Earliest period	Recent period (1941 to 1989)	Recent against earliest	Fitted trend
Last spring frost	28 April	n/a	27 April	n/a	-0.6 days per decade
First autumn frost	15 October	n/a	16 October	n/a	+0.8 days per decade
Growing days	167 days	n/a	175 days	n/a	+1.4 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

48 years, 1892 to 1990

A day with at least 18.1 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 41.9 mm (1.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Hawthorne AP: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	18.1 mm (0.7 in)
5 years	25.1 mm (1.0 in)
10 years	29.5 mm (1.2 in)
25 years	34.7 mm (1.4 in)
50 years	38.4 mm (1.5 in)	Longer than the 48 years of record
100 years	41.9 mm (1.6 in)	Longer than the 48 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, 48 years of values from 1892 to 1990.

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: 37.1 mm (1.5 in) in 1977; 33.3 mm (1.3 in) in 1941; 32.8 mm (1.3 in) in 1943.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Hawthorne AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hawthorne AP 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 2026-10-17 (17 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).