Burley Weather Records (USC00101288)

Record envelope, standing records and threshold days for Burley (USC00101288), Idaho, United States, with 51 years of record.

Key Facts for Burley

Burley (USC00101288) is a weather station in Idaho, United States at 42.53 latitude and -113.78 longitude, 1,275 m (4,183 ft) above sea level.
The station reports from 1917 to 1967, 51 years of record.
1,464 records set at Burley still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Burley tied a daily record precipitation of 2.3 mm (0.09 in) on 20 June 1967.

About the Station

Location: Idaho, United States, 42.53 latitude, -113.78 longitude.
Elevation: 1,275 m (4,183 ft).
Period of record: 1917 to 1967, 51 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 Burley. 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 Burley, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.7 C (62.1 F)	-37.2 C (-35.0 F)	n/a	n/a
Feb	21.1 C (70.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Mar	27.2 C (81.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-12.2 C (10.0 F)	n/a	n/a
May	36.1 C (97.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	39.4 C (102.9 F)	-2.8 C (27.0 F)	n/a	n/a
Jul	41.1 C (106.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-8.9 C (16.0 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-23.9 C (-11.0 F)	n/a	n/a
Dec	21.1 C (70.0 F)	-33.3 C (-27.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Burley still stand. 1932 holds the most, with 48.

Standing records at Burley by the year they were set
Year set	Standing records
1917	24
1918	40
1919	38
1920	32
1921	39
1922	43
1923	18
1924	40
1925	17
1926	40
1927	37
1928	26
1929	34
1930	44
1931	40
1932	48
1933	41
1934	43
1935	25
1936	36
1937	28
1938	23
1939	32
1940	30
1941	10
1942	20
1943	26
1944	18
1945	23
1946	19
1947	17
1948	13
1949	44
1950	30
1951	15
1952	20
1953	32
1954	38
1955	40
1956	28
1957	16
1958	29
1959	26
1960	29
1961	26
1962	21
1963	20
1964	22
1965	28
1966	20
1967	16

All-Time Record Progression

1 new records

1 all-time records were set at Burley between 24 December 1951 and 24 December 1951. Each dot is a new record.

Wettest Day of Each Month

Aug: 53.1 mm (2.1 in)

The wettest day on record for each calendar month at Burley. The most was 53.1 mm (2.1 in) on 20 August 1923.

Record daily precipitation for each month at Burley
Month	Record daily precipitation (mm)	Date
Jan	37.3 mm (1.5 in)	15 January 1936
Feb	21.3 mm (0.8 in)	5 February 1937
Mar	21.6 mm (0.9 in)	13 March 1946
Apr	20.3 mm (0.8 in)	14 April 1921
May	28.2 mm (1.1 in)	12 May 1942
Jun	42.7 mm (1.7 in)	9 June 1944
Jul	18.0 mm (0.7 in)	3 July 1938
Aug	53.1 mm (2.1 in)	20 August 1923
Sep	34.8 mm (1.4 in)	7 September 1917
Oct	23.9 mm (0.9 in)	28 October 1927
Nov	19.1 mm (0.8 in)	17 November 1930
Dec	37.1 mm (1.5 in)	23 December 1964

Period of Record Coverage

1917 to 1967

51 years of record at Burley, 1917 to 1967. 2 years have data for under 90 percent of days and are left out of rankings: 1917, 1967.

Days with data per year at Burley
Year	Days with data	Share of year	Complete
1917	184	50%	No
1918	363	99%	Yes
1919	365	100%	Yes
1920	359	98%	Yes
1921	364	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	364	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	364	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	364	100%	Yes
1943	363	99%	Yes
1944	364	99%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	356	97%	Yes
1949	364	100%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	365	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	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	181	50%	No

Latest Records

Latest records at Burley
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 June 1967	Burley, US	daily rain (Tie)	2.3 mm (0.09 in)	tie	36 years	4 of 100 (Routine)
23 May 1967	Burley, US	daily high max (Tie)	33.3 C (91.9 F)	tie	32 years	3 of 100 (Routine)
22 May 1967	Burley, US	daily high max	32.2 C (90.0 F)	0.5 C (0.9 F)	8 years	7 of 100 (Routine)
10 May 1967	Burley, US	daily rain	14.7 mm (0.6 in)	2.5 mm (0.10 in)	0 years	10 of 100 (Routine)
1 May 1967	Burley, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	48 years	34 of 100 (Routine)
1 May 1967	Burley, US	monthly low min	-6.1 C (21.0 F)	0.5 C (0.9 F)	42 years	28 of 100 (Routine)
1 May 1967	Burley, US	daily low max	5.6 C (42.1 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
30 April 1967	Burley, US	daily low max	5.0 C (41.0 F)	2.8 C (5.0 F)	29 years	17 of 100 (Routine)
28 April 1967	Burley, US	daily rain	18.3 mm (0.7 in)	5.1 mm (0.20 in)	12 years	20 of 100 (Routine)
28 April 1967	Burley, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	29 years	19 of 100 (Routine)
20 April 1967	Burley, US	daily low max	3.9 C (39.0 F)	1.1 C (2.0 F)	0 years	6 of 100 (Routine)
16 April 1967	Burley, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	42 years	37 of 100 (Notable)
16 April 1967	Burley, US	daily low max	3.3 C (37.9 F)	0.6 C (1.1 F)	44 years	18 of 100 (Routine)
23 March 1967	Burley, US	daily high min	7.2 C (45.0 F)	0.5 C (0.9 F)	4 years	7 of 100 (Routine)
17 March 1967	Burley, US	daily rain	7.4 mm (0.29 in)	3.3 mm (0.13 in)	28 years	20 of 100 (Routine)
12 March 1967	Burley, US	daily snowfall (Tie)	17.8 cm (7.0 in)	tie	37 years	4 of 100 (Routine)
11 March 1967	Burley, US	daily high min	6.1 C (43.0 F)	2.2 C (4.0 F)	20 years	16 of 100 (Routine)
10 March 1967	Burley, US	daily high min	6.7 C (44.1 F)	3.4 C (6.1 F)	0 years	14 of 100 (Routine)
2 March 1967	Burley, US	daily high max	18.3 C (64.9 F)	1.6 C (2.9 F)	42 years	19 of 100 (Routine)
1 March 1967	Burley, US	daily high max	18.9 C (66.0 F)	4.5 C (8.1 F)	12 years	16 of 100 (Routine)

Climate Trend

49 complete years, 1918 to 1966

One stripe for each of 49 complete years at Burley, 1918 to 1966. Blue stripes are years cooler than the station's own mean of 9.6 C (49.2 F); red stripes are warmer. The coolest year was 1922, at 7.6 C (45.7 F), and the warmest was 1934, at 11.5 C (52.7 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Burley as warming stripes, 1918 to 1966
Year	Annual mean temperature	Difference from the station mean
1918	9.7 C	+0.09 C
1919	8.8 C	-0.74 C
1920	8.6 C	-0.99 C
1921	9.1 C	-0.49 C
1922	7.6 C	-1.94 C
1923	8.4 C	-1.20 C
1924	8.7 C	-0.88 C
1925	9.6 C	+0.04 C
1926	10.0 C	+0.46 C
1927	9.1 C	-0.48 C
1928	8.9 C	-0.68 C
1929	8.2 C	-1.38 C
1930	8.4 C	-1.21 C
1931	9.0 C	-0.53 C
1932	7.7 C	-1.86 C
1933	8.9 C	-0.66 C
1934	11.5 C	+1.94 C
1935	8.8 C	-0.79 C
1936	9.4 C	-0.12 C
1937	9.0 C	-0.59 C
1938	10.1 C	+0.51 C
1939	10.4 C	+0.82 C
1940	11.1 C	+1.52 C
1941	10.2 C	+0.62 C
1942	9.1 C	-0.42 C
1943	10.3 C	+0.70 C
1944	8.7 C	-0.84 C
1945	9.5 C	-0.04 C
1946	10.1 C	+0.49 C
1947	10.1 C	+0.53 C
1948	9.5 C	-0.06 C
1949	9.3 C	-0.29 C
1950	10.1 C	+0.57 C
1951	9.4 C	-0.15 C
1952	9.5 C	-0.09 C
1953	10.8 C	+1.27 C
1954	10.5 C	+0.89 C
1955	8.9 C	-0.70 C
1956	9.7 C	+0.12 C
1957	9.7 C	+0.15 C
1958	11.1 C	+1.58 C
1959	10.3 C	+0.75 C
1960	9.9 C	+0.38 C
1961	10.6 C	+1.04 C
1962	9.8 C	+0.23 C
1963	10.4 C	+0.82 C
1964	9.2 C	-0.39 C
1965	10.2 C	+0.67 C
1966	10.8 C	+1.26 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.5) per decade over 1918 to 1966. In Fahrenheit: 0.6 F (0.3 to 0.9) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Burley
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.2 to 0.5) per decade	0.6 F (0.3 to 0.9) per decade	1918 to 1966	49	Rise
Mean daily maximum	0.2 C (0.1 to 0.4) per decade	0.4 F (0.1 to 0.7) per decade	1918 to 1966	49	Rise
Mean daily minimum	0.4 C (0.3 to 0.6) per decade	0.8 F (0.5 to 1.1) per decade	1918 to 1966	49	Rise

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 1967

Yearly extremes at Burley: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	1933	38.3 C (100.9 F)	51
Coldest night (TNn)	-37.2 C (-35.0 F)	1922	-21.7 C (-7.1 F)	51
Wettest day (Rx1day)	53.1 mm (2.1 in)	1923	20.1 mm (0.8 in)	51
Wettest five days (Rx5day)	77.6 mm (3.1 in)	1964	30.2 mm (1.2 in)	51
Longest dry spell (CDD)	133 days	1935	50 days	51

Hottest day (TXx)

The hottest day of the year at Burley, 1917 to 1967. The record is 41.1 C (106.0 F) in 1933, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Burley by year
Year	Hottest day (TXx)
1917	37.8 C (100.0 F)
1918	37.2 C (99.0 F)
1919	38.3 C (100.9 F)
1920	38.3 C (100.9 F)
1921	37.8 C (100.0 F)
1922	38.9 C (102.0 F)
1923	36.7 C (98.1 F)
1924	39.4 C (102.9 F)
1925	39.4 C (102.9 F)
1926	38.9 C (102.0 F)
1927	37.2 C (99.0 F)
1928	38.9 C (102.0 F)
1929	39.4 C (102.9 F)
1930	40.6 C (105.1 F)
1931	40.6 C (105.1 F)
1932	37.2 C (99.0 F)
1933	41.1 C (106.0 F)
1934	41.1 C (106.0 F)
1935	40.0 C (104.0 F)
1936	38.9 C (102.0 F)
1937	37.8 C (100.0 F)
1938	37.8 C (100.0 F)
1939	40.6 C (105.1 F)
1940	39.4 C (102.9 F)
1941	37.8 C (100.0 F)
1942	38.3 C (100.9 F)
1943	38.3 C (100.9 F)
1944	37.2 C (99.0 F)
1945	37.8 C (100.0 F)
1946	37.8 C (100.0 F)
1947	37.8 C (100.0 F)
1948	37.2 C (99.0 F)
1949	37.8 C (100.0 F)
1950	38.9 C (102.0 F)
1951	39.4 C (102.9 F)
1952	36.1 C (97.0 F)
1953	37.2 C (99.0 F)
1954	40.6 C (105.1 F)
1955	38.3 C (100.9 F)
1956	38.9 C (102.0 F)
1957	37.2 C (99.0 F)
1958	38.9 C (102.0 F)
1959	40.6 C (105.1 F)
1960	40.0 C (104.0 F)
1961	40.0 C (104.0 F)
1962	38.3 C (100.9 F)
1963	37.2 C (99.0 F)
1964	38.3 C (100.9 F)
1965	38.3 C (100.9 F)
1966	38.3 C (100.9 F)
1967	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Burley, 1917 to 1967. The record is -37.2 C (-35.0 F) in 1922, marked on the chart; the median year is -21.7 C (-7.1 F).

Coldest night (TNn) at Burley by year
Year	Coldest night (TNn)
1917	-12.8 C (9.0 F)
1918	-18.9 C (-2.0 F)
1919	-25.6 C (-14.1 F)
1920	-20.6 C (-5.1 F)
1921	-22.8 C (-9.0 F)
1922	-37.2 C (-35.0 F)
1923	-21.7 C (-7.1 F)
1924	-33.3 C (-27.9 F)
1925	-20.6 C (-5.1 F)
1926	-21.7 C (-7.1 F)
1927	-25.0 C (-13.0 F)
1928	-26.1 C (-15.0 F)
1929	-28.9 C (-20.0 F)
1930	-32.2 C (-26.0 F)
1931	-23.9 C (-11.0 F)
1932	-29.4 C (-20.9 F)
1933	-32.8 C (-27.0 F)
1934	-12.8 C (9.0 F)
1935	-24.4 C (-11.9 F)
1936	-23.3 C (-9.9 F)
1937	-34.4 C (-29.9 F)
1938	-16.1 C (3.0 F)
1939	-15.6 C (3.9 F)
1940	-17.8 C (0.0 F)
1941	-18.9 C (-2.0 F)
1942	-29.4 C (-20.9 F)
1943	-18.9 C (-2.0 F)
1944	-21.7 C (-7.1 F)
1945	-20.0 C (-4.0 F)
1946	-17.2 C (1.0 F)
1947	-22.2 C (-8.0 F)
1948	-18.9 C (-2.0 F)
1949	-31.1 C (-24.0 F)
1950	-27.2 C (-17.0 F)
1951	-21.7 C (-7.1 F)
1952	-21.1 C (-6.0 F)
1953	-12.8 C (9.0 F)
1954	-19.4 C (-2.9 F)
1955	-23.3 C (-9.9 F)
1956	-24.4 C (-11.9 F)
1957	-23.9 C (-11.0 F)
1958	-15.6 C (3.9 F)
1959	-20.6 C (-5.1 F)
1960	-24.4 C (-11.9 F)
1961	-17.8 C (0.0 F)
1962	-31.7 C (-25.1 F)
1963	-26.7 C (-16.1 F)
1964	-19.4 C (-2.9 F)
1965	-17.8 C (0.0 F)
1966	-12.2 C (10.0 F)
1967	-9.4 C (15.1 F)

Wettest day (Rx1day)

The wettest day of the year at Burley, 1917 to 1967. The record is 53.1 mm (2.1 in) in 1923, marked on the chart; the median year is 20.1 mm (0.8 in).

Wettest day (Rx1day) at Burley by year
Year	Wettest day (Rx1day)
1917	34.8 mm (1.4 in)
1918	17.8 mm (0.7 in)
1919	16.5 mm (0.6 in)
1920	17.3 mm (0.7 in)
1921	41.7 mm (1.6 in)
1922	26.2 mm (1.0 in)
1923	53.1 mm (2.1 in)
1924	16.8 mm (0.7 in)
1925	20.6 mm (0.8 in)
1926	11.7 mm (0.5 in)
1927	23.9 mm (0.9 in)
1928	19.1 mm (0.8 in)
1929	20.8 mm (0.8 in)
1930	22.4 mm (0.9 in)
1931	10.7 mm (0.4 in)
1932	24.1 mm (0.9 in)
1933	14.0 mm (0.6 in)
1934	13.0 mm (0.5 in)
1935	20.1 mm (0.8 in)
1936	37.3 mm (1.5 in)
1937	21.3 mm (0.8 in)
1938	20.3 mm (0.8 in)
1939	9.7 mm (0.38 in)
1940	22.9 mm (0.9 in)
1941	15.0 mm (0.6 in)
1942	28.2 mm (1.1 in)
1943	23.9 mm (0.9 in)
1944	42.7 mm (1.7 in)
1945	11.7 mm (0.5 in)
1946	21.6 mm (0.9 in)
1947	10.7 mm (0.4 in)
1948	13.2 mm (0.5 in)
1949	13.2 mm (0.5 in)
1950	24.9 mm (1.0 in)
1951	22.9 mm (0.9 in)
1952	14.2 mm (0.6 in)
1953	14.0 mm (0.6 in)
1954	19.8 mm (0.8 in)
1955	22.9 mm (0.9 in)
1956	14.0 mm (0.6 in)
1957	26.2 mm (1.0 in)
1958	16.5 mm (0.6 in)
1959	20.6 mm (0.8 in)
1960	14.2 mm (0.6 in)
1961	19.6 mm (0.8 in)
1962	16.8 mm (0.7 in)
1963	27.4 mm (1.1 in)
1964	37.1 mm (1.5 in)
1965	14.7 mm (0.6 in)
1966	25.4 mm (1.0 in)
1967	18.3 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Burley, 1917 to 1967. The record is 77.6 mm (3.1 in) in 1964, marked on the chart; the median year is 30.2 mm (1.2 in).

Wettest five days (Rx5day) at Burley by year
Year	Wettest five days (Rx5day)
1917	35.6 mm (1.4 in)
1918	21.5 mm (0.8 in)
1919	28.0 mm (1.1 in)
1920	38.8 mm (1.5 in)
1921	43.2 mm (1.7 in)
1922	31.8 mm (1.3 in)
1923	53.9 mm (2.1 in)
1924	23.5 mm (0.9 in)
1925	26.5 mm (1.0 in)
1926	14.7 mm (0.6 in)
1927	34.3 mm (1.4 in)
1928	37.6 mm (1.5 in)
1929	31.5 mm (1.2 in)
1930	47.6 mm (1.9 in)
1931	28.5 mm (1.1 in)
1932	31.8 mm (1.3 in)
1933	22.2 mm (0.9 in)
1934	24.6 mm (1.0 in)
1935	34.6 mm (1.4 in)
1936	55.1 mm (2.2 in)
1937	35.0 mm (1.4 in)
1938	36.6 mm (1.4 in)
1939	16.5 mm (0.6 in)
1940	26.9 mm (1.1 in)
1941	23.6 mm (0.9 in)
1942	51.6 mm (2.0 in)
1943	33.7 mm (1.3 in)
1944	56.2 mm (2.2 in)
1945	20.4 mm (0.8 in)
1946	37.1 mm (1.5 in)
1947	23.1 mm (0.9 in)
1948	26.4 mm (1.0 in)
1949	24.7 mm (1.0 in)
1950	43.3 mm (1.7 in)
1951	30.2 mm (1.2 in)
1952	17.7 mm (0.7 in)
1953	29.0 mm (1.1 in)
1954	25.1 mm (1.0 in)
1955	41.9 mm (1.6 in)
1956	33.8 mm (1.3 in)
1957	33.3 mm (1.3 in)
1958	25.2 mm (1.0 in)
1959	22.1 mm (0.9 in)
1960	21.5 mm (0.8 in)
1961	32.1 mm (1.3 in)
1962	24.7 mm (1.0 in)
1963	50.5 mm (2.0 in)
1964	77.6 mm (3.1 in)
1965	23.9 mm (0.9 in)
1966	28.4 mm (1.1 in)
1967	22.4 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Burley, 1917 to 1967. The record is 133 days in 1935, marked on the chart; the median year is 50 days.

Longest dry spell (CDD) at Burley by year
Year	Longest dry spell (CDD)
1917	49 days
1918	25 days
1919	41 days
1920	45 days
1921	53 days
1922	42 days
1923	36 days
1924	72 days
1925	34 days
1926	66 days
1927	43 days
1928	85 days
1929	78 days
1930	35 days
1931	64 days
1932	44 days
1933	78 days
1934	106 days
1935	133 days
1936	67 days
1937	41 days
1938	34 days
1939	69 days
1940	93 days
1941	23 days
1942	63 days
1943	69 days
1944	96 days
1945	57 days
1946	26 days
1947	31 days
1948	75 days
1949	52 days
1950	59 days
1951	81 days
1952	105 days
1953	52 days
1954	107 days
1955	29 days
1956	43 days
1957	42 days
1958	68 days
1959	44 days
1960	50 days
1961	41 days
1962	47 days
1963	46 days
1964	38 days
1965	83 days
1966	35 days
1967	38 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

49 years with a frost

Across 49 years with a frost, the median last spring frost at Burley falls on 14 May and the median first autumn frost on 28 September, which leaves a median of 137 days between them.

Fitted over all years, the growing season changes by +10.0 days per decade at this station.

Frost dates and growing season at Burley
Measure	Median, all years	Earliest period	Recent period (1937 to 1966)	Recent against earliest	Fitted trend
Last spring frost	14 May	n/a	7 May	n/a	-3.7 days per decade
First autumn frost	28 September	n/a	3 October	n/a	+6.3 days per decade
Growing days	137 days	n/a	145 days	n/a	+10.0 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.

Rainfall Return Levels

49 years, 1918 to 1966

A day with at least 19.0 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 53.8 mm (2.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Burley: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	19.0 mm (0.7 in)
5 years	26.5 mm (1.0 in)
10 years	32.1 mm (1.3 in)
25 years	40.0 mm (1.6 in)
50 years	46.6 mm (1.8 in)	Longer than the 49 years of record
100 years	53.8 mm (2.1 in)	Longer than the 49 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, 49 years of values from 1918 to 1966.

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: 53.1 mm (2.1 in) in 1923; 42.7 mm (1.7 in) in 1944; 41.7 mm (1.6 in) in 1921.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Burley, at 1938. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1938 ran 0.3 C (0.5 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Burley, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1938	+0.3	+0.5	likely	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 Burley standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Burley 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).