La Sal Weather Records (USC00424946)

Record envelope, standing records and threshold days for La Sal (USC00424946), Utah, United States, with 78 years of record.

Key Facts for La Sal

La Sal (USC00424946) is a weather station in Utah, United States at 38.32 latitude and -109.25 longitude, 2,129 m (6,985 ft) above sea level.
The station reports from 1901 to 1978, 78 years of record.
1,464 records set at La Sal still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
La Sal set a monthly record high maximum temperature of 22.8 C (73.0 F) on 28 March 1978.

About the Station

Location: Utah, United States, 38.32 latitude, -109.25 longitude.
Elevation: 2,129 m (6,985 ft).
Period of record: 1901 to 1978, 78 years.
Eligible elements: tmax, tmin, prcp, snow.

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 La Sal. 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 La Sal, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	16.7 C (62.1 F)	-32.8 C (-27.0 F)	n/a	n/a
Mar	22.8 C (73.0 F)	-23.3 C (-9.9 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-18.3 C (-0.9 F)	n/a	n/a
May	32.8 C (91.0 F)	-7.2 C (19.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-5.6 C (21.9 F)	n/a	n/a
Jul	38.3 C (100.9 F)	1.1 C (34.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	1.7 C (35.1 F)	n/a	n/a
Sep	32.8 C (91.0 F)	-7.2 C (19.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-17.8 C (0.0 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-21.7 C (-7.1 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-30.0 C (-22.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at La Sal still stand. 1917 holds the most, with 63.

Standing records at La Sal by the year they were set
Year set	Standing records
1901	32
1902	38
1903	23
1904	8
1905	15
1906	16
1907	5
1908	16
1909	25
1910	26
1911	11
1912	21
1913	19
1914	17
1915	41
1916	34
1917	63
1918	14
1919	10
1920	16
1921	44
1922	17
1923	4
1924	26
1925	23
1926	22
1927	9
1928	11
1929	11
1930	18
1931	36
1932	20
1933	34
1934	42
1935	16
1936	17
1937	20
1938	48
1939	19
1940	11
1941	13
1942	12
1943	27
1944	12
1945	24
1946	39
1947	16
1948	9
1949	2
1950	6
1952	12
1953	19
1954	13
1955	22
1956	29
1957	11
1958	38
1959	25
1960	41
1961	1
1964	7
1965	9
1966	19
1967	15
1968	10
1969	14
1970	19
1971	32
1972	19
1973	9
1974	5
1975	16
1976	13
1977	7
1978	1

All-Time Record Progression

2 new records

2 all-time records were set at La Sal between 1 August 1938 and 16 October 1965. Each dot is a new record.

When La Sal set new all-time records
Date	Kind	Detail
1938-08-01	Record high maximum temperature	Record high maximum temperature 40.6 C (105.1 F)
1965-10-16	Record daily precipitation	Record daily precipitation 51.8 mm (2.0 in)

Wettest Day of Each Month

Oct: 51.8 mm (2.0 in)

The wettest day on record for each calendar month at La Sal. The most was 51.8 mm (2.0 in) on 16 October 1965.

Record daily precipitation for each month at La Sal
Month	Record daily precipitation (mm)	Date
Jan	38.1 mm (1.5 in)	17 January 1914
Feb	31.0 mm (1.2 in)	2 February 1905
Mar	22.6 mm (0.9 in)	17 March 1905
Apr	26.7 mm (1.1 in)	27 April 1932
May	31.8 mm (1.3 in)	25 May 1928
Jun	49.5 mm (1.9 in)	2 June 1973
Jul	42.7 mm (1.7 in)	23 July 1909
Aug	49.0 mm (1.9 in)	2 August 1976
Sep	43.2 mm (1.7 in)	4 September 1939
Oct	51.8 mm (2.0 in)	16 October 1965
Nov	27.9 mm (1.1 in)	13 November 1928
Dec	50.8 mm (2.0 in)	22 December 1924

Period of Record Coverage

1901 to 1978

77 years of record at La Sal, 1901 to 1978. 46 years have data for under 90 percent of days and are left out of rankings: 1901, 1903, 1904, 1906, 1907, 1908, 1910, 1911 and others.

Days with data per year at La Sal
Year	Days with data	Share of year	Complete
1901	285	78%	No
1902	342	94%	Yes
1903	256	70%	No
1904	174	48%	No
1905	332	91%	Yes
1906	220	60%	No
1907	71	19%	No
1908	254	69%	No
1909	334	92%	Yes
1910	304	83%	No
1911	241	66%	No
1912	293	80%	No
1913	260	71%	No
1914	301	82%	No
1915	302	83%	No
1916	280	77%	No
1917	267	73%	No
1918	326	89%	No
1919	281	77%	No
1920	285	78%	No
1921	354	97%	Yes
1922	265	73%	No
1923	223	61%	No
1924	263	72%	No
1925	303	83%	No
1926	234	64%	No
1927	324	89%	No
1928	220	60%	No
1929	120	33%	No
1930	352	96%	Yes
1931	365	100%	Yes
1932	365	100%	Yes
1933	365	100%	Yes
1934	364	100%	Yes
1935	363	99%	Yes
1936	363	99%	Yes
1937	273	75%	No
1938	254	70%	No
1939	333	91%	Yes
1940	202	55%	No
1941	363	99%	Yes
1942	361	99%	Yes
1943	364	100%	Yes
1944	362	99%	Yes
1945	337	92%	Yes
1946	331	91%	Yes
1947	302	83%	No
1948	119	33%	No
1949	113	31%	No
1950	129	35%	No
1951	31	8%	No
1952	361	99%	Yes
1953	364	100%	Yes
1954	362	99%	Yes
1955	346	95%	Yes
1956	361	99%	Yes
1957	365	100%	Yes
1958	281	77%	No
1959	295	81%	No
1960	315	86%	No
1961	104	28%	No
1963	63	17%	No
1964	167	46%	No
1965	231	63%	No
1966	274	75%	No
1967	274	75%	No
1968	335	92%	Yes
1969	364	100%	Yes
1970	320	88%	No
1971	336	92%	Yes
1972	319	87%	No
1973	289	79%	No
1974	337	92%	Yes
1975	349	96%	Yes
1976	366	100%	Yes
1977	360	99%	Yes
1978	67	18%	No

Latest Records

Latest records at La Sal
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 March 1978	La Sal, US	monthly high max	22.8 C (73.0 F)	0.6 C (1.1 F)	31 years	27 of 100 (Routine)
22 March 1978	La Sal, US	daily rain	4.6 mm (0.18 in)	1.3 mm (0.05 in)	24 years	17 of 100 (Routine)
12 March 1978	La Sal, US	daily rain	7.6 mm (0.30 in)	1.2 mm (0.05 in)	25 years	17 of 100 (Routine)
11 February 1978	La Sal, US	daily snowfall	17.8 cm (7.0 in)	6.4 cm (2.5 in)	28 years	24 of 100 (Routine)
8 February 1978	La Sal, US	daily snowfall	10.2 cm (4.0 in)	3.8 cm (1.5 in)	56 years	28 of 100 (Routine)
8 February 1978	La Sal, US	daily rain (Tie)	10.2 mm (0.4 in)	tie	51 years	5 of 100 (Routine)
6 February 1978	La Sal, US	daily snowfall	7.6 cm (3.0 in)	3.8 cm (1.5 in)	47 years	26 of 100 (Routine)
17 January 1978	La Sal, US	daily snowfall (Tie)	10.2 cm (4.0 in)	tie	62 years	6 of 100 (Routine)
15 January 1978	La Sal, US	daily rain	18.5 mm (0.7 in)	8.3 mm (0.33 in)	8 years	20 of 100 (Routine)
10 January 1978	La Sal, US	daily snowfall	17.8 cm (7.0 in)	10.2 cm (4.0 in)	64 years	43 of 100 (Notable)
6 January 1978	La Sal, US	daily snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	39 years	26 of 100 (Routine)
6 January 1978	La Sal, US	daily rain	7.4 mm (0.29 in)	1.0 mm (0.04 in)	39 years	19 of 100 (Routine)
31 December 1977	La Sal, US	daily snowfall	14.0 cm (5.5 in)	6.4 cm (2.5 in)	52 years	30 of 100 (Routine)
20 December 1977	La Sal, US	daily low max (Tie)	-6.1 C (21.0 F)	tie	68 years	6 of 100 (Routine)
10 December 1977	La Sal, US	daily high max	12.8 C (55.0 F)	0.6 C (1.1 F)	44 years	21 of 100 (Routine)
6 November 1977	La Sal, US	daily rain	19.6 mm (0.8 in)	6.6 mm (0.26 in)	32 years	20 of 100 (Routine)
7 October 1977	La Sal, US	daily rain	21.6 mm (0.9 in)	2.8 mm (0.11 in)	60 years	20 of 100 (Routine)
1 October 1977	La Sal, US	daily low min (Tie)	-3.3 C (26.1 F)	tie	58 years	6 of 100 (Routine)
17 June 1977	La Sal, US	daily high max (Tie)	30.0 C (86.0 F)	tie	35 years	4 of 100 (Routine)
7 June 1977	La Sal, US	daily high min (Tie)	13.3 C (55.9 F)	tie	48 years	5 of 100 (Routine)

Climate Trend

26 complete years, 1905 to 1977

One stripe for each of 26 complete years at La Sal, 1905 to 1977. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1975, at 6.8 C (44.2 F), and the warmest was 1934, at 10.7 C (51.2 F). The strongest colour marks a difference of 2.8 C (5.0 F).

Annual mean temperature at La Sal as warming stripes, 1905 to 1977
Year	Annual mean temperature	Difference from the station mean
1905	7.4 C	-0.56 C
1909	7.3 C	-0.64 C
1930	7.7 C	-0.28 C
1931	8.4 C	+0.48 C
1932	7.6 C	-0.38 C
1933	7.9 C	-0.03 C
1934	10.7 C	+2.74 C
1935	8.0 C	+0.08 C
1936	7.7 C	-0.24 C
1941	7.8 C	-0.09 C
1942	7.7 C	-0.20 C
1943	9.4 C	+1.42 C
1944	7.9 C	-0.06 C
1952	7.2 C	-0.69 C
1953	7.4 C	-0.51 C
1954	8.0 C	+0.02 C
1955	7.4 C	-0.57 C
1956	8.6 C	+0.62 C
1957	7.8 C	-0.10 C
1969	8.2 C	+0.28 C
1970	7.8 C	-0.18 C
1971	8.0 C	+0.02 C
1974	7.6 C	-0.31 C
1975	6.8 C	-1.14 C
1976	7.8 C	-0.11 C
1977	8.4 C	+0.42 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

1901 to 1978

Yearly extremes at La Sal: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1938	32.8 C (91.0 F)	77
Coldest night (TNn)	-32.8 C (-27.0 F)	1933	-21.7 C (-7.1 F)	77
Wettest day (Rx1day)	51.8 mm (2.0 in)	1965	26.2 mm (1.0 in)	77
Wettest five days (Rx5day)	80.3 mm (3.2 in)	1947	36.7 mm (1.4 in)	74
Longest dry spell (CDD)	68 days	1956	33 days	77

Hottest day (TXx)

The hottest day of the year at La Sal, 1901 to 1978. The record is 40.6 C (105.1 F) in 1938, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at La Sal by year
Year	Hottest day (TXx)
1901	34.4 C (93.9 F)
1902	34.4 C (93.9 F)
1903	31.7 C (89.1 F)
1904	30.6 C (87.1 F)
1905	31.1 C (88.0 F)
1906	31.7 C (89.1 F)
1907	21.1 C (70.0 F)
1908	31.7 C (89.1 F)
1909	32.2 C (90.0 F)
1910	32.2 C (90.0 F)
1911	28.9 C (84.0 F)
1912	30.0 C (86.0 F)
1913	30.0 C (86.0 F)
1914	31.1 C (88.0 F)
1915	31.7 C (89.1 F)
1916	30.0 C (86.0 F)
1917	31.7 C (89.1 F)
1918	33.3 C (91.9 F)
1919	30.6 C (87.1 F)
1920	29.4 C (84.9 F)
1921	30.0 C (86.0 F)
1922	32.2 C (90.0 F)
1923	35.0 C (95.0 F)
1924	32.2 C (90.0 F)
1925	32.8 C (91.0 F)
1926	27.2 C (81.0 F)
1927	31.7 C (89.1 F)
1928	33.3 C (91.9 F)
1929	37.8 C (100.0 F)
1930	33.3 C (91.9 F)
1931	37.8 C (100.0 F)
1932	34.4 C (93.9 F)
1933	33.9 C (93.0 F)
1934	36.1 C (97.0 F)
1935	33.9 C (93.0 F)
1936	33.9 C (93.0 F)
1937	35.0 C (95.0 F)
1938	40.6 C (105.1 F)
1939	35.0 C (95.0 F)
1940	34.4 C (93.9 F)
1941	32.2 C (90.0 F)
1942	34.4 C (93.9 F)
1943	33.3 C (91.9 F)
1944	33.3 C (91.9 F)
1945	33.3 C (91.9 F)
1946	33.9 C (93.0 F)
1947	33.9 C (93.0 F)
1948	22.8 C (73.0 F)
1949	27.8 C (82.0 F)
1950	22.8 C (73.0 F)
1951	35.0 C (95.0 F)
1952	32.2 C (90.0 F)
1953	35.0 C (95.0 F)
1954	35.0 C (95.0 F)
1955	33.3 C (91.9 F)
1956	32.8 C (91.0 F)
1957	32.8 C (91.0 F)
1958	37.8 C (100.0 F)
1959	33.9 C (93.0 F)
1960	38.3 C (100.9 F)
1961	24.4 C (75.9 F)
1963	16.7 C (62.1 F)
1964	30.0 C (86.0 F)
1965	31.7 C (89.1 F)
1966	37.8 C (100.0 F)
1967	32.2 C (90.0 F)
1968	32.8 C (91.0 F)
1969	34.4 C (93.9 F)
1970	33.9 C (93.0 F)
1971	34.4 C (93.9 F)
1972	33.9 C (93.0 F)
1973	33.9 C (93.0 F)
1974	31.7 C (89.1 F)
1975	31.7 C (89.1 F)
1976	34.4 C (93.9 F)
1977	31.1 C (88.0 F)
1978	22.8 C (73.0 F)

Coldest night (TNn)

The coldest night of the year at La Sal, 1901 to 1978. The record is -32.8 C (-27.0 F) in 1933, marked on the chart; the median year is -21.7 C (-7.1 F).

Coldest night (TNn) at La Sal by year
Year	Coldest night (TNn)
1901	-21.7 C (-7.1 F)
1902	-22.2 C (-8.0 F)
1903	-24.4 C (-11.9 F)
1904	-21.1 C (-6.0 F)
1905	-26.1 C (-15.0 F)
1906	-19.4 C (-2.9 F)
1907	-18.3 C (-0.9 F)
1908	-20.6 C (-5.1 F)
1909	-23.9 C (-11.0 F)
1910	-25.0 C (-13.0 F)
1911	-20.6 C (-5.1 F)
1912	-20.6 C (-5.1 F)
1913	-30.0 C (-22.0 F)
1914	-20.0 C (-4.0 F)
1915	-19.4 C (-2.9 F)
1916	-23.3 C (-9.9 F)
1917	-25.0 C (-13.0 F)
1918	-21.7 C (-7.1 F)
1919	-25.0 C (-13.0 F)
1920	-22.8 C (-9.0 F)
1921	-16.7 C (1.9 F)
1922	-20.6 C (-5.1 F)
1923	-18.9 C (-2.0 F)
1924	-30.0 C (-22.0 F)
1925	-22.8 C (-9.0 F)
1926	-20.6 C (-5.1 F)
1927	-13.9 C (7.0 F)
1928	-12.8 C (9.0 F)
1929	-16.7 C (1.9 F)
1930	-25.6 C (-14.1 F)
1931	-22.2 C (-8.0 F)
1932	-23.9 C (-11.0 F)
1933	-32.8 C (-27.0 F)
1934	-16.7 C (1.9 F)
1935	-25.0 C (-13.0 F)
1936	-20.0 C (-4.0 F)
1937	-30.0 C (-22.0 F)
1938	-22.8 C (-9.0 F)
1939	-29.4 C (-20.9 F)
1940	-30.0 C (-22.0 F)
1941	-17.8 C (0.0 F)
1942	-23.3 C (-9.9 F)
1943	-21.1 C (-6.0 F)
1944	-18.9 C (-2.0 F)
1945	-19.4 C (-2.9 F)
1946	-21.1 C (-6.0 F)
1947	-23.3 C (-9.9 F)
1948	-26.1 C (-15.0 F)
1949	-19.4 C (-2.9 F)
1950	-21.1 C (-6.0 F)
1951	7.8 C (46.0 F)
1952	-23.3 C (-9.9 F)
1953	-20.6 C (-5.1 F)
1954	-21.7 C (-7.1 F)
1955	-26.1 C (-15.0 F)
1956	-22.2 C (-8.0 F)
1957	-16.1 C (3.0 F)
1958	-18.9 C (-2.0 F)
1959	-17.8 C (0.0 F)
1960	-25.0 C (-13.0 F)
1961	-9.4 C (15.1 F)
1963	-17.8 C (0.0 F)
1964	-22.2 C (-8.0 F)
1965	-16.1 C (3.0 F)
1966	-22.8 C (-9.0 F)
1967	-22.2 C (-8.0 F)
1968	-22.2 C (-8.0 F)
1969	-16.1 C (3.0 F)
1970	-18.9 C (-2.0 F)
1971	-26.7 C (-16.1 F)
1972	-16.7 C (1.9 F)
1973	-20.6 C (-5.1 F)
1974	-25.6 C (-14.1 F)
1975	-23.3 C (-9.9 F)
1976	-22.8 C (-9.0 F)
1977	-22.2 C (-8.0 F)
1978	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at La Sal, 1901 to 1978. The record is 51.8 mm (2.0 in) in 1965, marked on the chart; the median year is 26.2 mm (1.0 in).

Wettest day (Rx1day) at La Sal by year
Year	Wettest day (Rx1day)
1901	28.2 mm (1.1 in)
1902	33.8 mm (1.3 in)
1903	17.5 mm (0.7 in)
1904	23.1 mm (0.9 in)
1905	31.0 mm (1.2 in)
1906	32.3 mm (1.3 in)
1907	15.2 mm (0.6 in)
1908	39.4 mm (1.6 in)
1909	42.7 mm (1.7 in)
1910	16.0 mm (0.6 in)
1911	32.5 mm (1.3 in)
1912	29.5 mm (1.2 in)
1913	18.0 mm (0.7 in)
1914	38.1 mm (1.5 in)
1915	36.3 mm (1.4 in)
1916	21.3 mm (0.8 in)
1917	22.9 mm (0.9 in)
1918	21.6 mm (0.9 in)
1919	26.2 mm (1.0 in)
1920	29.0 mm (1.1 in)
1921	36.8 mm (1.4 in)
1922	10.7 mm (0.4 in)
1923	20.8 mm (0.8 in)
1924	50.8 mm (2.0 in)
1925	38.6 mm (1.5 in)
1926	24.1 mm (0.9 in)
1927	50.8 mm (2.0 in)
1928	31.8 mm (1.3 in)
1929	14.0 mm (0.6 in)
1930	15.2 mm (0.6 in)
1931	31.8 mm (1.3 in)
1932	27.9 mm (1.1 in)
1933	35.6 mm (1.4 in)
1934	19.6 mm (0.8 in)
1935	20.3 mm (0.8 in)
1936	44.5 mm (1.8 in)
1937	32.8 mm (1.3 in)
1938	19.1 mm (0.8 in)
1939	43.2 mm (1.7 in)
1940	26.7 mm (1.1 in)
1941	28.4 mm (1.1 in)
1942	18.8 mm (0.7 in)
1943	20.8 mm (0.8 in)
1944	27.9 mm (1.1 in)
1945	26.2 mm (1.0 in)
1946	21.6 mm (0.9 in)
1947	26.7 mm (1.1 in)
1948	17.8 mm (0.7 in)
1949	27.2 mm (1.1 in)
1950	11.9 mm (0.5 in)
1951	10.2 mm (0.4 in)
1952	15.7 mm (0.6 in)
1953	21.3 mm (0.8 in)
1954	20.3 mm (0.8 in)
1955	22.9 mm (0.9 in)
1956	24.6 mm (1.0 in)
1957	37.8 mm (1.5 in)
1958	23.9 mm (0.9 in)
1959	21.8 mm (0.9 in)
1960	29.5 mm (1.2 in)
1961	22.6 mm (0.9 in)
1963	20.8 mm (0.8 in)
1964	8.6 mm (0.34 in)
1965	51.8 mm (2.0 in)
1966	31.5 mm (1.2 in)
1967	33.0 mm (1.3 in)
1968	18.3 mm (0.7 in)
1969	26.9 mm (1.1 in)
1970	26.2 mm (1.0 in)
1971	27.2 mm (1.1 in)
1972	30.0 mm (1.2 in)
1973	49.5 mm (1.9 in)
1974	31.2 mm (1.2 in)
1975	17.5 mm (0.7 in)
1976	49.0 mm (1.9 in)
1977	21.6 mm (0.9 in)
1978	18.5 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at La Sal, 1901 to 1978. The record is 80.3 mm (3.2 in) in 1947, marked on the chart; the median year is 36.7 mm (1.4 in).

Wettest five days (Rx5day) at La Sal by year
Year	Wettest five days (Rx5day)
1901	37.6 mm (1.5 in)
1902	51.6 mm (2.0 in)
1903	30.8 mm (1.2 in)
1904	26.1 mm (1.0 in)
1905	40.8 mm (1.6 in)
1906	39.2 mm (1.5 in)
1907	15.2 mm (0.6 in)
1908	44.7 mm (1.8 in)
1909	48.5 mm (1.9 in)
1910	29.9 mm (1.2 in)
1911	25.9 mm (1.0 in)
1912	21.6 mm (0.9 in)
1913	32.8 mm (1.3 in)
1914	23.2 mm (0.9 in)
1915	19.6 mm (0.8 in)
1916	50.8 mm (2.0 in)
1917	11.5 mm (0.5 in)
1918	29.7 mm (1.2 in)
1919	n/a
1920	n/a
1921	n/a
1922	24.5 mm (1.0 in)
1923	27.2 mm (1.1 in)
1924	43.2 mm (1.7 in)
1925	55.9 mm (2.2 in)
1926	29.5 mm (1.2 in)
1927	63.5 mm (2.5 in)
1928	56.0 mm (2.2 in)
1929	1.3 mm (0.05 in)
1930	25.4 mm (1.0 in)
1931	33.6 mm (1.3 in)
1932	51.3 mm (2.0 in)
1933	53.7 mm (2.1 in)
1934	26.9 mm (1.1 in)
1935	38.6 mm (1.5 in)
1936	49.4 mm (1.9 in)
1937	36.5 mm (1.4 in)
1938	21.6 mm (0.9 in)
1939	62.0 mm (2.4 in)
1940	60.2 mm (2.4 in)
1941	51.6 mm (2.0 in)
1942	36.3 mm (1.4 in)
1943	28.0 mm (1.1 in)
1944	40.6 mm (1.6 in)
1945	45.7 mm (1.8 in)
1946	49.6 mm (2.0 in)
1947	80.3 mm (3.2 in)
1948	25.6 mm (1.0 in)
1949	31.8 mm (1.3 in)
1950	20.3 mm (0.8 in)
1951	17.8 mm (0.7 in)
1952	22.3 mm (0.9 in)
1953	39.3 mm (1.5 in)
1954	36.8 mm (1.4 in)
1955	28.7 mm (1.1 in)
1956	34.5 mm (1.4 in)
1957	70.1 mm (2.8 in)
1958	29.0 mm (1.1 in)
1959	37.6 mm (1.5 in)
1960	45.2 mm (1.8 in)
1961	28.7 mm (1.1 in)
1963	20.8 mm (0.8 in)
1964	21.5 mm (0.8 in)
1965	60.4 mm (2.4 in)
1966	40.4 mm (1.6 in)
1967	64.7 mm (2.5 in)
1968	31.7 mm (1.2 in)
1969	39.1 mm (1.5 in)
1970	38.4 mm (1.5 in)
1971	49.6 mm (2.0 in)
1972	46.8 mm (1.8 in)
1973	61.4 mm (2.4 in)
1974	37.6 mm (1.5 in)
1975	24.1 mm (0.9 in)
1976	51.3 mm (2.0 in)
1977	33.3 mm (1.3 in)
1978	29.9 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at La Sal, 1901 to 1978. The record is 68 days in 1956, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at La Sal by year
Year	Longest dry spell (CDD)
1901	40 days
1902	49 days
1903	49 days
1904	22 days
1905	35 days
1906	32 days
1907	46 days
1908	28 days
1909	40 days
1910	33 days
1911	15 days
1912	22 days
1913	10 days
1914	7 days
1915	22 days
1916	47 days
1917	30 days
1918	9 days
1919	2 days
1920	4 days
1921	2 days
1922	17 days
1923	19 days
1924	7 days
1925	12 days
1926	20 days
1927	28 days
1928	16 days
1929	30 days
1930	37 days
1931	30 days
1932	40 days
1933	39 days
1934	37 days
1935	32 days
1936	36 days
1937	30 days
1938	27 days
1939	60 days
1940	24 days
1941	27 days
1942	64 days
1943	25 days
1944	36 days
1945	38 days
1946	32 days
1947	35 days
1948	16 days
1949	27 days
1950	23 days
1951	19 days
1952	54 days
1953	42 days
1954	34 days
1955	56 days
1956	68 days
1957	39 days
1958	47 days
1959	48 days
1960	50 days
1961	18 days
1963	15 days
1964	61 days
1965	27 days
1966	43 days
1967	33 days
1968	34 days
1969	62 days
1970	37 days
1971	49 days
1972	41 days
1973	39 days
1974	50 days
1975	24 days
1976	45 days
1977	40 days
1978	16 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 La Sal falls on 29 May and the median first autumn frost on 3 October, which leaves a median of 125 days between them.

Fitted over all years, the growing season changes by -0.2 days per decade at this station.

Frost dates and growing season at La Sal
Measure	Median, all years	Earliest period	Recent period (1905 to 1977)	Recent against earliest	Fitted trend
Last spring frost	29 May	n/a	29 May	n/a	+0.4 days per decade
First autumn frost	3 October	n/a	3 October	n/a	+0.2 days per decade
Growing days	125 days	n/a	125 days	n/a	-0.2 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

32 years, 1905 to 1977

A day with at least 25.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 50.3 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at La Sal: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	25.3 mm (1.0 in)
5 years	32.1 mm (1.3 in)
10 years	36.6 mm (1.4 in)
25 years	42.2 mm (1.7 in)
50 years	46.3 mm (1.8 in)	Longer than the 32 years of record
100 years	50.3 mm (2.0 in)	Longer than the 32 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, 32 years of values from 1905 to 1977.

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: 49.0 mm (1.9 in) in 1976; 42.7 mm (1.7 in) in 1909; 37.8 mm (1.5 in) in 1957.

Download the Data

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