Lancaster Weather Records (USC00044747)

Record envelope, standing records and threshold days for Lancaster (USC00044747), California, United States, with 56 years of record.

Key Facts for Lancaster

Lancaster (USC00044747) is a weather station in California, United States at 34.68 latitude and -118.12 longitude, 732 m (2,402 ft) above sea level.
The station reports from 1917 to 1972, 56 years of record.
1,464 records set at Lancaster still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.

About the Station

Location: California, United States, 34.68 latitude, -118.12 longitude.
Elevation: 732 m (2,402 ft).
Period of record: 1917 to 1972, 56 years.
Eligible elements: tmax, tmin.

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 Lancaster. 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 Lancaster, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.7 C (80.1 F)	-15.6 C (3.9 F)	n/a	n/a
Feb	27.8 C (82.0 F)	-11.7 C (10.9 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-7.8 C (18.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
May	40.6 C (105.1 F)	0.0 C (32.0 F)	n/a	n/a
Jun	45.0 C (113.0 F)	3.3 C (37.9 F)	n/a	n/a
Jul	45.6 C (114.1 F)	7.2 C (45.0 F)	n/a	n/a
Aug	45.0 C (113.0 F)	6.1 C (43.0 F)	n/a	n/a
Sep	44.4 C (111.9 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	32.2 C (90.0 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	29.4 C (84.9 F)	-11.7 C (10.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Lancaster still stand. 1950 holds the most, with 94.

Standing records at Lancaster by the year they were set
Year set	Standing records
1917	60
1918	74
1945	68
1946	59
1947	52
1948	67
1949	87
1950	94
1951	60
1952	54
1953	45
1954	47
1955	46
1956	47
1957	49
1958	32
1959	40
1960	47
1961	33
1962	45
1963	42
1964	45
1965	46
1966	31
1967	41
1968	29
1969	22
1970	24
1971	45
1972	33

Wettest Day of Each Month

Nov: 49.5 mm (1.9 in)

The wettest day on record for each calendar month at Lancaster. The most was 49.5 mm (1.9 in) on 22 November 1965.

Record daily precipitation for each month at Lancaster
Month	Record daily precipitation (mm)	Date
Jan	40.6 mm (1.6 in)	18 January 1952
Feb	28.4 mm (1.1 in)	19 February 1958
Mar	47.0 mm (1.9 in)	7 March 1952
Apr	19.6 mm (0.8 in)	3 April 1958
May	13.5 mm (0.5 in)	1 May 1955
Jun	15.7 mm (0.6 in)	8 June 1972
Jul	49.3 mm (1.9 in)	27 July 1917
Aug	14.5 mm (0.6 in)	30 August 1967
Sep	21.1 mm (0.8 in)	26 September 1918
Oct	21.1 mm (0.8 in)	17 October 1963
Nov	49.5 mm (1.9 in)	22 November 1965
Dec	36.1 mm (1.4 in)	24 December 1971

Period of Record Coverage

1917 to 1972

30 years of record at Lancaster, 1917 to 1972. 2 years have data for under 90 percent of days and are left out of rankings: 1918, 1972.

Days with data per year at Lancaster
Year	Days with data	Share of year	Complete
1917	346	95%	Yes
1918	300	82%	No
1945	364	100%	Yes
1946	365	100%	Yes
1947	358	98%	Yes
1948	364	99%	Yes
1949	345	95%	Yes
1950	364	100%	Yes
1951	361	99%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	362	99%	Yes
1955	357	98%	Yes
1956	366	100%	Yes
1957	363	99%	Yes
1958	365	100%	Yes
1959	363	99%	Yes
1960	366	100%	Yes
1961	365	100%	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	365	100%	Yes
1971	365	100%	Yes
1972	280	77%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

26 complete years, 1917 to 1971

One stripe for each of 26 complete years at Lancaster, 1917 to 1971. Blue stripes are years cooler than the station's own mean of 16.0 C (60.7 F); red stripes are warmer. The coolest year was 1948, at 15.0 C (59.0 F), and the warmest was 1950, at 17.3 C (63.1 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Lancaster as warming stripes, 1917 to 1971
Year	Annual mean temperature	Difference from the station mean
1917	15.9 C	-0.05 C
1945	15.9 C	-0.10 C
1946	15.4 C	-0.60 C
1947	15.8 C	-0.16 C
1948	15.0 C	-0.99 C
1950	17.3 C	+1.28 C
1951	16.6 C	+0.65 C
1952	16.0 C	+0.00 C
1953	15.8 C	-0.15 C
1954	16.6 C	+0.63 C
1955	15.8 C	-0.17 C
1956	15.8 C	-0.21 C
1957	15.5 C	-0.50 C
1959	16.9 C	+0.92 C
1960	16.8 C	+0.78 C
1961	16.4 C	+0.43 C
1962	16.1 C	+0.13 C
1963	15.8 C	-0.15 C
1964	15.4 C	-0.56 C
1965	15.4 C	-0.55 C
1966	16.1 C	+0.10 C
1967	15.8 C	-0.21 C
1968	15.9 C	-0.04 C
1969	16.0 C	+0.05 C
1970	16.1 C	+0.15 C
1971	15.2 C	-0.79 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1917 to 1972

Yearly extremes at Lancaster: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1960	42.8 C (109.0 F)	30
Coldest night (TNn)	-15.6 C (3.9 F)	1963	-11.1 C (12.0 F)	30
Wettest day (Rx1day)	49.5 mm (1.9 in)	1965	26.4 mm (1.0 in)	30
Wettest five days (Rx5day)	81.7 mm (3.2 in)	1952	28.9 mm (1.1 in)	29
Longest dry spell (CDD)	247 days	1956	124 days	30

Hottest day (TXx)

The hottest day of the year at Lancaster, 1917 to 1972. The record is 45.6 C (114.1 F) in 1960, marked on the chart; the median year is 42.8 C (109.0 F).

Hottest day (TXx) at Lancaster by year
Year	Hottest day (TXx)
1917	43.3 C (109.9 F)
1918	42.2 C (108.0 F)
1945	43.3 C (109.9 F)
1946	43.3 C (109.9 F)
1947	43.3 C (109.9 F)
1948	43.3 C (109.9 F)
1949	42.2 C (108.0 F)
1950	45.0 C (113.0 F)
1951	43.3 C (109.9 F)
1952	40.6 C (105.1 F)
1953	41.7 C (107.1 F)
1954	43.9 C (111.0 F)
1955	43.3 C (109.9 F)
1956	43.9 C (111.0 F)
1957	41.7 C (107.1 F)
1958	42.8 C (109.0 F)
1959	43.3 C (109.9 F)
1960	45.6 C (114.1 F)
1961	45.0 C (113.0 F)
1962	42.2 C (108.0 F)
1963	39.4 C (102.9 F)
1964	41.7 C (107.1 F)
1965	40.6 C (105.1 F)
1966	42.8 C (109.0 F)
1967	41.1 C (106.0 F)
1968	40.6 C (105.1 F)
1969	41.7 C (107.1 F)
1970	41.7 C (107.1 F)
1971	41.7 C (107.1 F)
1972	43.9 C (111.0 F)

Coldest night (TNn)

The coldest night of the year at Lancaster, 1917 to 1972. The record is -15.6 C (3.9 F) in 1963, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at Lancaster by year
Year	Coldest night (TNn)
1917	-8.9 C (16.0 F)
1918	-8.9 C (16.0 F)
1945	-11.7 C (10.9 F)
1946	-11.1 C (12.0 F)
1947	-10.6 C (12.9 F)
1948	-12.2 C (10.0 F)
1949	-13.9 C (7.0 F)
1950	-12.8 C (9.0 F)
1951	-10.0 C (14.0 F)
1952	-8.3 C (17.1 F)
1953	-11.1 C (12.0 F)
1954	-11.1 C (12.0 F)
1955	-7.8 C (18.0 F)
1956	-11.7 C (10.9 F)
1957	-14.4 C (6.1 F)
1958	-11.1 C (12.0 F)
1959	-8.3 C (17.1 F)
1960	-9.4 C (15.1 F)
1961	-10.0 C (14.0 F)
1962	-11.7 C (10.9 F)
1963	-15.6 C (3.9 F)
1964	-11.1 C (12.0 F)
1965	-10.0 C (14.0 F)
1966	-9.4 C (15.1 F)
1967	-8.3 C (17.1 F)
1968	-11.7 C (10.9 F)
1969	-9.4 C (15.1 F)
1970	-11.1 C (12.0 F)
1971	-11.1 C (12.0 F)
1972	-11.1 C (12.0 F)

Wettest day (Rx1day)

The wettest day of the year at Lancaster, 1917 to 1972. The record is 49.5 mm (1.9 in) in 1965, marked on the chart; the median year is 26.4 mm (1.0 in).

Wettest day (Rx1day) at Lancaster by year
Year	Wettest day (Rx1day)
1917	49.3 mm (1.9 in)
1918	25.4 mm (1.0 in)
1945	35.3 mm (1.4 in)
1946	37.8 mm (1.5 in)
1947	29.5 mm (1.2 in)
1948	15.0 mm (0.6 in)
1949	11.4 mm (0.4 in)
1950	16.0 mm (0.6 in)
1951	20.8 mm (0.8 in)
1952	47.0 mm (1.9 in)
1953	5.6 mm (0.22 in)
1954	39.6 mm (1.6 in)
1955	14.7 mm (0.6 in)
1956	27.4 mm (1.1 in)
1957	38.6 mm (1.5 in)
1958	28.4 mm (1.1 in)
1959	19.6 mm (0.8 in)
1960	18.5 mm (0.7 in)
1961	21.1 mm (0.8 in)
1962	27.9 mm (1.1 in)
1963	21.1 mm (0.8 in)
1964	18.8 mm (0.7 in)
1965	49.5 mm (1.9 in)
1966	35.8 mm (1.4 in)
1967	31.5 mm (1.2 in)
1968	14.7 mm (0.6 in)
1969	22.1 mm (0.9 in)
1970	38.6 mm (1.5 in)
1971	36.1 mm (1.4 in)
1972	15.7 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Lancaster, 1917 to 1972. The record is 81.7 mm (3.2 in) in 1952, marked on the chart; the median year is 28.9 mm (1.1 in).

Wettest five days (Rx5day) at Lancaster by year
Year	Wettest five days (Rx5day)
1917	26.9 mm (1.1 in)
1918	n/a
1945	53.8 mm (2.1 in)
1946	56.6 mm (2.2 in)
1947	38.1 mm (1.5 in)
1948	15.5 mm (0.6 in)
1949	15.7 mm (0.6 in)
1950	16.0 mm (0.6 in)
1951	20.8 mm (0.8 in)
1952	81.7 mm (3.2 in)
1953	8.4 mm (0.33 in)
1954	41.4 mm (1.6 in)
1955	21.7 mm (0.9 in)
1956	28.9 mm (1.1 in)
1957	47.7 mm (1.9 in)
1958	41.7 mm (1.6 in)
1959	25.7 mm (1.0 in)
1960	20.8 mm (0.8 in)
1961	22.1 mm (0.9 in)
1962	49.9 mm (2.0 in)
1963	24.4 mm (1.0 in)
1964	22.3 mm (0.9 in)
1965	66.5 mm (2.6 in)
1966	37.8 mm (1.5 in)
1967	75.4 mm (3.0 in)
1968	16.0 mm (0.6 in)
1969	46.8 mm (1.8 in)
1970	71.1 mm (2.8 in)
1971	68.6 mm (2.7 in)
1972	22.9 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Lancaster, 1917 to 1972. The record is 247 days in 1956, marked on the chart; the median year is 124 days.

Longest dry spell (CDD) at Lancaster by year
Year	Longest dry spell (CDD)
1917	20 days
1918	2 days
1945	146 days
1946	72 days
1947	72 days
1948	138 days
1949	176 days
1950	113 days
1951	149 days
1952	90 days
1953	169 days
1954	117 days
1955	152 days
1956	247 days
1957	110 days
1958	127 days
1959	201 days
1960	164 days
1961	211 days
1962	229 days
1963	55 days
1964	174 days
1965	96 days
1966	187 days
1967	101 days
1968	116 days
1969	101 days
1970	214 days
1971	100 days
1972	120 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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Lancaster falls on 10 April and the median first autumn frost on 28 October, which leaves a median of 207 days between them.

Fitted over all years, the growing season changes by +2.0 days per decade at this station.

Frost dates and growing season at Lancaster
Measure	Median, all years	Earliest period	Recent period (1917 to 1971)	Recent against earliest	Fitted trend
Last spring frost	10 April	n/a	10 April	n/a	+0.2 days per decade
First autumn frost	28 October	n/a	28 October	n/a	+2.2 days per decade
Growing days	207 days	n/a	207 days	n/a	+2.0 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.

Download the Data

Data for Lancaster standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lancaster 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 2026-10-14 (14 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).