Salmon Hole Weather Records (CA008205000)

Record envelope, standing records and threshold days for Salmon Hole (CA008205000), Nova Scotia, Canada, with 75 years of record.

Key Facts for Salmon Hole

Salmon Hole (CA008205000) is a weather station in Nova Scotia, Canada at 44.93 latitude and -64.03 longitude, 84 m (276 ft) above sea level.
The station reports from 1938 to 2012, 75 years of record.
1,464 records set at Salmon Hole still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Salmon Hole set a daily record low minimum temperature of -25.0 C (-13.0 F) on 27 December 1983.

About the Station

Location: Nova Scotia, Canada, 44.93 latitude, -64.03 longitude.
Elevation: 84 m (276 ft).
Period of record: 1938 to 2012, 75 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 Salmon Hole. 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 Salmon Hole, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-31.7 C (-25.1 F)	n/a	n/a
Feb	14.0 C (57.2 F)	-33.9 C (-29.0 F)	n/a	n/a
Mar	21.7 C (71.1 F)	-28.9 C (-20.0 F)	n/a	n/a
Apr	26.7 C (80.1 F)	-15.6 C (3.9 F)	n/a	n/a
May	32.8 C (91.0 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-3.3 C (26.1 F)	n/a	n/a
Jul	34.4 C (93.9 F)	0.6 C (33.1 F)	n/a	n/a
Aug	35.6 C (96.1 F)	0.6 C (33.1 F)	n/a	n/a
Sep	32.2 C (90.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	26.1 C (79.0 F)	-9.4 C (15.1 F)	n/a	n/a
Nov	22.2 C (72.0 F)	-13.3 C (8.1 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-28.0 C (-18.4 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Salmon Hole still stand. 1979 holds the most, with 76.

Standing records at Salmon Hole by the year they were set
Year set	Standing records
1938	12
1939	42
1940	40
1941	33
1942	40
1943	45
1944	41
1945	50
1946	51
1947	49
1948	38
1949	39
1950	42
1951	30
1952	16
1953	34
1954	25
1955	29
1956	33
1957	31
1958	27
1959	21
1960	13
1961	18
1962	17
1963	18
1964	17
1965	26
1966	19
1967	38
1968	28
1969	27
1970	26
1971	28
1972	33
1973	26
1974	26
1975	34
1976	40
1977	32
1978	34
1979	76
1980	26
1981	30
1982	30
1983	34

All-Time Record Progression

4 new records

4 all-time records were set at Salmon Hole between 24 December 1970 and 27 July 1979. Each dot is a new record.

When Salmon Hole set new all-time records
Date	Kind	Detail
1970-12-24	Record daily snowfall	Record daily snowfall 50.8 cm (20.0 in)
1971-02-04	Record low minimum temperature	Record low minimum temperature -33.9 C (-29.0 F)
1971-08-15	Record daily precipitation	Record daily precipitation 139.2 mm (5.5 in)
1979-07-27	Record high minimum temperature	Record high minimum temperature 23.3 C (73.9 F)

Wettest Day of Each Month

Aug: 139.2 mm (5.5 in)

The wettest day on record for each calendar month at Salmon Hole. The most was 139.2 mm (5.5 in) on 15 August 1971.

Record daily precipitation for each month at Salmon Hole
Month	Record daily precipitation (mm)	Date
Jan	115.8 mm (4.6 in)	14 January 1978
Feb	67.1 mm (2.6 in)	25 February 1965
Mar	70.6 mm (2.8 in)	20 March 1975
Apr	68.0 mm (2.7 in)	28 April 1982
May	86.9 mm (3.4 in)	4 May 1943
Jun	67.8 mm (2.7 in)	20 June 1959
Jul	83.8 mm (3.3 in)	30 July 1977
Aug	139.2 mm (5.5 in)	15 August 1971
Sep	96.0 mm (3.8 in)	22 September 1942
Oct	134.4 mm (5.3 in)	26 October 1959
Nov	64.0 mm (2.5 in)	9 November 1972
Dec	82.3 mm (3.2 in)	10 December 1975

Period of Record Coverage

1938 to 1983

46 years of record at Salmon Hole, 1938 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1938, 1961, 1963.

Days with data per year at Salmon Hole
Year	Days with data	Share of year	Complete
1938	87	24%	No
1939	350	96%	Yes
1940	363	99%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	363	99%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	302	83%	No
1962	340	93%	Yes
1963	232	64%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	360	99%	Yes
1967	365	100%	Yes
1968	360	98%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	363	99%	Yes
1979	362	99%	Yes
1980	357	98%	Yes
1981	344	94%	Yes
1982	343	94%	Yes
1983	351	96%	Yes

Latest Records

Latest records at Salmon Hole
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 1983	Salmon Hole, CA	daily low min	-25.0 C (-13.0 F)	2.8 C (5.0 F)	20 years	14 of 100 (Routine)
26 December 1983	Salmon Hole, CA	daily low min	-24.5 C (-12.1 F)	0.5 C (0.9 F)	2 years	4 of 100 (Routine)
16 December 1983	Salmon Hole, CA	daily high min	7.0 C (44.6 F)	3.7 C (6.7 F)	9 years	11 of 100 (Routine)
15 December 1983	Salmon Hole, CA	daily high min (Tie)	5.0 C (41.0 F)	tie	14 years	2 of 100 (Routine)
14 December 1983	Salmon Hole, CA	daily high max	15.0 C (59.0 F)	2.2 C (4.0 F)	33 years	17 of 100 (Routine)
6 December 1983	Salmon Hole, CA	daily rain	37.0 mm (1.5 in)	4.7 mm (0.19 in)	24 years	15 of 100 (Routine)
16 November 1983	Salmon Hole, CA	daily high max	14.5 C (58.1 F)	0.1 C (0.2 F)	32 years	13 of 100 (Routine)
12 November 1983	Salmon Hole, CA	daily high min (Tie)	10.0 C (50.0 F)	tie	16 years	2 of 100 (Routine)
10 November 1983	Salmon Hole, CA	daily low min	-7.5 C (18.5 F)	0.3 C (0.5 F)	17 years	9 of 100 (Routine)
14 October 1983	Salmon Hole, CA	daily high min	15.0 C (59.0 F)	2.2 C (4.0 F)	4 years	9 of 100 (Routine)
3 October 1983	Salmon Hole, CA	daily high max	24.0 C (75.2 F)	0.1 C (0.2 F)	32 years	13 of 100 (Routine)
22 September 1983	Salmon Hole, CA	daily high min	17.5 C (63.5 F)	0.8 C (1.4 F)	8 years	7 of 100 (Routine)
21 September 1983	Salmon Hole, CA	daily high max	28.0 C (82.4 F)	0.2 C (0.4 F)	17 years	9 of 100 (Routine)
17 September 1983	Salmon Hole, CA	daily rain	44.2 mm (1.7 in)	19.6 mm (0.8 in)	44 years	33 of 100 (Routine)
6 September 1983	Salmon Hole, CA	daily high max	29.0 C (84.2 F)	0.1 C (0.2 F)	34 years	14 of 100 (Routine)
5 September 1983	Salmon Hole, CA	daily high max	29.5 C (85.1 F)	2.8 C (5.0 F)	26 years	19 of 100 (Routine)
31 August 1983	Salmon Hole, CA	daily rain	47.0 mm (1.9 in)	26.9 mm (1.1 in)	28 years	29 of 100 (Routine)
12 August 1983	Salmon Hole, CA	monthly low max	13.0 C (55.4 F)	2.0 C (3.6 F)	21 years	26 of 100 (Routine)
22 July 1983	Salmon Hole, CA	daily rain	45.2 mm (1.8 in)	14.2 mm (0.6 in)	18 years	21 of 100 (Routine)
16 July 1983	Salmon Hole, CA	daily low max	20.5 C (68.9 F)	0.6 C (1.1 F)	25 years	12 of 100 (Routine)

Climate Trend

43 complete years, 1939 to 1983

One stripe for each of 43 complete years at Salmon Hole, 1939 to 1983. Blue stripes are years cooler than the station's own mean of 6.5 C (43.8 F); red stripes are warmer. The coolest year was 1948, at 5.2 C (41.3 F), and the warmest was 1979, at 9.0 C (48.3 F). The strongest colour marks a difference of 2.5 C (4.5 F).

Annual mean temperature at Salmon Hole as warming stripes, 1939 to 1983
Year	Annual mean temperature	Difference from the station mean
1939	5.7 C	-0.81 C
1940	5.3 C	-1.21 C
1941	5.7 C	-0.85 C
1942	6.4 C	-0.11 C
1943	5.4 C	-1.11 C
1944	6.1 C	-0.43 C
1945	5.9 C	-0.61 C
1946	5.8 C	-0.72 C
1947	5.9 C	-0.60 C
1948	5.2 C	-1.37 C
1949	7.1 C	+0.54 C
1950	6.3 C	-0.20 C
1951	7.7 C	+1.18 C
1952	7.0 C	+0.46 C
1953	7.8 C	+1.26 C
1954	6.8 C	+0.24 C
1955	6.2 C	-0.30 C
1956	6.4 C	-0.12 C
1957	7.0 C	+0.46 C
1958	6.8 C	+0.22 C
1959	6.7 C	+0.15 C
1960	7.3 C	+0.72 C
1962	6.0 C	-0.57 C
1964	6.1 C	-0.40 C
1965	5.5 C	-1.05 C
1966	6.9 C	+0.39 C
1967	5.8 C	-0.79 C
1968	5.6 C	-0.96 C
1969	7.4 C	+0.87 C
1970	6.5 C	-0.05 C
1971	6.7 C	+0.16 C
1972	5.8 C	-0.71 C
1973	7.2 C	+0.64 C
1974	6.5 C	-0.09 C
1975	6.8 C	+0.22 C
1976	7.5 C	+0.92 C
1977	7.2 C	+0.63 C
1978	6.6 C	+0.01 C
1979	9.0 C	+2.49 C
1980	7.3 C	+0.72 C
1981	7.0 C	+0.43 C
1982	6.2 C	-0.30 C
1983	7.2 C	+0.70 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1939 to 1983. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Salmon Hole
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.4) per decade	0.5 F (0.2 to 0.8) per decade	1939 to 1983	43	Rise
Mean daily maximum	0.1 C (-0.1 to 0.3) per decade	0.2 F (-0.1 to 0.5) per decade	1939 to 1983	43	Not clearly different from zero
Mean daily minimum	0.4 C (0.2 to 0.6) per decade	0.8 F (0.4 to 1.1) per decade	1939 to 1983	43	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

1938 to 1983

Yearly extremes at Salmon Hole: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1944	31.7 C (89.1 F)	46
Coldest night (TNn)	-33.9 C (-29.0 F)	1971	-26.1 C (-15.0 F)	46
Wettest day (Rx1day)	139.2 mm (5.5 in)	1971	62.8 mm (2.5 in)	46
Wettest five days (Rx5day)	230.0 mm (9.1 in)	1956	93.3 mm (3.7 in)	46
Longest dry spell (CDD)	31 days	1939	15 days	46

Hottest day (TXx)

The hottest day of the year at Salmon Hole, 1938 to 1983. The record is 35.6 C (96.1 F) in 1944, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Salmon Hole by year
Year	Hottest day (TXx)
1938	26.1 C (79.0 F)
1939	32.2 C (90.0 F)
1940	31.1 C (88.0 F)
1941	32.2 C (90.0 F)
1942	31.7 C (89.1 F)
1943	32.2 C (90.0 F)
1944	35.6 C (96.1 F)
1945	32.2 C (90.0 F)
1946	33.3 C (91.9 F)
1947	33.9 C (93.0 F)
1948	30.6 C (87.1 F)
1949	33.3 C (91.9 F)
1950	30.6 C (87.1 F)
1951	30.0 C (86.0 F)
1952	33.3 C (91.9 F)
1953	30.0 C (86.0 F)
1954	31.7 C (89.1 F)
1955	32.8 C (91.0 F)
1956	29.4 C (84.9 F)
1957	32.8 C (91.0 F)
1958	28.9 C (84.0 F)
1959	31.7 C (89.1 F)
1960	32.2 C (90.0 F)
1961	29.4 C (84.9 F)
1962	30.6 C (87.1 F)
1963	34.4 C (93.9 F)
1964	30.0 C (86.0 F)
1965	31.7 C (89.1 F)
1966	30.0 C (86.0 F)
1967	31.1 C (88.0 F)
1968	31.1 C (88.0 F)
1969	31.7 C (89.1 F)
1970	31.7 C (89.1 F)
1971	31.1 C (88.0 F)
1972	30.6 C (87.1 F)
1973	31.7 C (89.1 F)
1974	30.6 C (87.1 F)
1975	33.3 C (91.9 F)
1976	35.0 C (95.0 F)
1977	32.8 C (91.0 F)
1978	32.8 C (91.0 F)
1979	31.1 C (88.0 F)
1980	31.0 C (87.8 F)
1981	30.0 C (86.0 F)
1982	30.5 C (86.9 F)
1983	32.0 C (89.6 F)

Coldest night (TNn)

The coldest night of the year at Salmon Hole, 1938 to 1983. The record is -33.9 C (-29.0 F) in 1971, marked on the chart; the median year is -26.1 C (-15.0 F).

Coldest night (TNn) at Salmon Hole by year
Year	Coldest night (TNn)
1938	-15.0 C (5.0 F)
1939	-21.1 C (-6.0 F)
1940	-25.6 C (-14.1 F)
1941	-27.2 C (-17.0 F)
1942	-27.8 C (-18.0 F)
1943	-28.3 C (-18.9 F)
1944	-23.9 C (-11.0 F)
1945	-28.9 C (-20.0 F)
1946	-28.9 C (-20.0 F)
1947	-26.7 C (-16.1 F)
1948	-31.1 C (-24.0 F)
1949	-25.0 C (-13.0 F)
1950	-26.1 C (-15.0 F)
1951	-26.7 C (-16.1 F)
1952	-22.8 C (-9.0 F)
1953	-21.1 C (-6.0 F)
1954	-32.2 C (-26.0 F)
1955	-30.6 C (-23.1 F)
1956	-25.0 C (-13.0 F)
1957	-31.7 C (-25.1 F)
1958	-21.1 C (-6.0 F)
1959	-25.0 C (-13.0 F)
1960	-21.1 C (-6.0 F)
1961	-30.6 C (-23.1 F)
1962	-27.2 C (-17.0 F)
1963	-24.4 C (-11.9 F)
1964	-26.1 C (-15.0 F)
1965	-29.4 C (-20.9 F)
1966	-26.1 C (-15.0 F)
1967	-28.9 C (-20.0 F)
1968	-27.8 C (-18.0 F)
1969	-18.3 C (-0.9 F)
1970	-25.6 C (-14.1 F)
1971	-33.9 C (-29.0 F)
1972	-26.1 C (-15.0 F)
1973	-27.8 C (-18.0 F)
1974	-26.1 C (-15.0 F)
1975	-25.6 C (-14.1 F)
1976	-22.8 C (-9.0 F)
1977	-20.0 C (-4.0 F)
1978	-24.4 C (-11.9 F)
1979	-25.0 C (-13.0 F)
1980	-28.0 C (-18.4 F)
1981	-29.5 C (-21.1 F)
1982	-27.0 C (-16.6 F)
1983	-25.0 C (-13.0 F)

Wettest day (Rx1day)

The wettest day of the year at Salmon Hole, 1938 to 1983. The record is 139.2 mm (5.5 in) in 1971, marked on the chart; the median year is 62.8 mm (2.5 in).

Wettest day (Rx1day) at Salmon Hole by year
Year	Wettest day (Rx1day)
1938	76.5 mm (3.0 in)
1939	55.9 mm (2.2 in)
1940	51.6 mm (2.0 in)
1941	42.4 mm (1.7 in)
1942	96.0 mm (3.8 in)
1943	86.9 mm (3.4 in)
1944	44.7 mm (1.8 in)
1945	63.0 mm (2.5 in)
1946	64.0 mm (2.5 in)
1947	64.8 mm (2.6 in)
1948	92.7 mm (3.6 in)
1949	116.1 mm (4.6 in)
1950	96.8 mm (3.8 in)
1951	43.4 mm (1.7 in)
1952	64.5 mm (2.5 in)
1953	62.5 mm (2.5 in)
1954	56.4 mm (2.2 in)
1955	37.8 mm (1.5 in)
1956	96.0 mm (3.8 in)
1957	56.6 mm (2.2 in)
1958	65.3 mm (2.6 in)
1959	134.4 mm (5.3 in)
1960	44.7 mm (1.8 in)
1961	70.6 mm (2.8 in)
1962	50.0 mm (2.0 in)
1963	54.6 mm (2.1 in)
1964	42.7 mm (1.7 in)
1965	67.1 mm (2.6 in)
1966	33.8 mm (1.3 in)
1967	96.3 mm (3.8 in)
1968	43.7 mm (1.7 in)
1969	51.6 mm (2.0 in)
1970	59.7 mm (2.4 in)
1971	139.2 mm (5.5 in)
1972	65.0 mm (2.6 in)
1973	40.6 mm (1.6 in)
1974	66.0 mm (2.6 in)
1975	82.3 mm (3.2 in)
1976	51.6 mm (2.0 in)
1977	83.8 mm (3.3 in)
1978	115.8 mm (4.6 in)
1979	53.1 mm (2.1 in)
1980	55.6 mm (2.2 in)
1981	57.0 mm (2.2 in)
1982	68.0 mm (2.7 in)
1983	55.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Salmon Hole, 1938 to 1983. The record is 230.0 mm (9.1 in) in 1956, marked on the chart; the median year is 93.3 mm (3.7 in).

Wettest five days (Rx5day) at Salmon Hole by year
Year	Wettest five days (Rx5day)
1938	92.2 mm (3.6 in)
1939	68.1 mm (2.7 in)
1940	71.6 mm (2.8 in)
1941	85.3 mm (3.4 in)
1942	181.6 mm (7.1 in)
1943	109.0 mm (4.3 in)
1944	67.1 mm (2.6 in)
1945	114.3 mm (4.5 in)
1946	101.8 mm (4.0 in)
1947	114.6 mm (4.5 in)
1948	96.0 mm (3.8 in)
1949	175.8 mm (6.9 in)
1950	129.1 mm (5.1 in)
1951	60.5 mm (2.4 in)
1952	107.7 mm (4.2 in)
1953	91.5 mm (3.6 in)
1954	95.2 mm (3.7 in)
1955	62.4 mm (2.5 in)
1956	230.0 mm (9.1 in)
1957	70.3 mm (2.8 in)
1958	128.6 mm (5.1 in)
1959	188.3 mm (7.4 in)
1960	69.1 mm (2.7 in)
1961	156.4 mm (6.2 in)
1962	80.3 mm (3.2 in)
1963	63.0 mm (2.5 in)
1964	83.9 mm (3.3 in)
1965	78.8 mm (3.1 in)
1966	54.1 mm (2.1 in)
1967	112.8 mm (4.4 in)
1968	76.2 mm (3.0 in)
1969	84.0 mm (3.3 in)
1970	82.6 mm (3.3 in)
1971	212.2 mm (8.4 in)
1972	82.3 mm (3.2 in)
1973	109.2 mm (4.3 in)
1974	116.1 mm (4.6 in)
1975	118.1 mm (4.6 in)
1976	80.1 mm (3.2 in)
1977	111.3 mm (4.4 in)
1978	145.8 mm (5.7 in)
1979	121.9 mm (4.8 in)
1980	67.5 mm (2.7 in)
1981	94.3 mm (3.7 in)
1982	85.3 mm (3.4 in)
1983	69.5 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Salmon Hole, 1938 to 1983. The record is 31 days in 1939, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Salmon Hole by year
Year	Longest dry spell (CDD)
1938	15 days
1939	31 days
1940	15 days
1941	15 days
1942	11 days
1943	13 days
1944	15 days
1945	17 days
1946	17 days
1947	14 days
1948	9 days
1949	13 days
1950	17 days
1951	13 days
1952	14 days
1953	15 days
1954	16 days
1955	10 days
1956	16 days
1957	14 days
1958	15 days
1959	15 days
1960	14 days
1961	18 days
1962	12 days
1963	14 days
1964	15 days
1965	18 days
1966	14 days
1967	13 days
1968	19 days
1969	15 days
1970	12 days
1971	16 days
1972	10 days
1973	16 days
1974	28 days
1975	23 days
1976	11 days
1977	8 days
1978	25 days
1979	15 days
1980	14 days
1981	12 days
1982	19 days
1983	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

43 years with a frost

Across 43 years with a frost, the median last spring frost at Salmon Hole falls on 28 May and the median first autumn frost on 30 September, which leaves a median of 124 days between them.

Fitted over all years, the growing season changes by +8.3 days per decade at this station.

Frost dates and growing season at Salmon Hole
Measure	Median, all years	Earliest period	Recent period (1952 to 1983)	Recent against earliest	Fitted trend
Last spring frost	28 May	n/a	27 May	n/a	-3.9 days per decade
First autumn frost	30 September	n/a	9 October	n/a	+4.3 days per decade
Growing days	124 days	n/a	133 days	n/a	+8.3 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

42 years, 1939 to 1983

A day with at least 61.9 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 167.5 mm (6.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Salmon Hole: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.9 mm (2.4 in)
5 years	84.3 mm (3.3 in)
10 years	101.2 mm (4.0 in)
25 years	125.3 mm (4.9 in)
50 years	145.4 mm (5.7 in)	Longer than the 42 years of record
100 years	167.5 mm (6.6 in)	Longer than the 42 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, 42 years of values from 1939 to 1983.

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: 139.2 mm (5.5 in) in 1971; 134.4 mm (5.3 in) in 1959; 116.1 mm (4.6 in) in 1949.

Station Changes

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

Download the Data

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