Salmon AP Weather Records (USC00108076)

Record envelope, standing records and threshold days for Salmon AP (USC00108076), Idaho, United States, with 122 years of record.

Key Facts for Salmon AP

Salmon AP (USC00108076) is a weather station in Idaho, United States at 45.20 latitude and -113.87 longitude, 1,233 m (4,044 ft) above sea level.
The station reports from 1905 to 2026, 122 years of record.
1,464 records set at Salmon AP still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Salmon AP set a daily record high maximum temperature of 28.9 C (84.0 F) on 9 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Idaho, United States, 45.20 latitude, -113.87 longitude.
Elevation: 1,233 m (4,044 ft).
Period of record: 1905 to 2026, 122 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

12 days at or beyond a record

The band shows the record high and record low for each calendar day at Salmon AP. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Salmon AP, 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)	-38.3 C (-36.9 F)	8.9 C (48.0 F)	-17.2 C (1.0 F)
Feb	20.0 C (68.0 F)	-37.2 C (-35.0 F)	15.0 C (59.0 F)	-8.3 C (17.1 F)
Mar	25.6 C (78.1 F)	-28.9 C (-20.0 F)	25.6 C (78.1 F)	-7.8 C (18.0 F)
Apr	31.7 C (89.1 F)	-16.7 C (1.9 F)	27.2 C (81.0 F)	-7.8 C (18.0 F)
May	35.6 C (96.1 F)	-8.9 C (16.0 F)	32.2 C (90.0 F)	-3.3 C (26.1 F)
Jun	37.8 C (100.0 F)	-3.9 C (25.0 F)	32.2 C (90.0 F)	1.7 C (35.1 F)
Jul	41.1 C (106.0 F)	-3.3 C (26.1 F)	38.3 C (100.9 F)	6.1 C (43.0 F)
Aug	39.4 C (102.9 F)	-5.6 C (21.9 F)	37.8 C (100.0 F)	2.8 C (37.0 F)
Sep	37.2 C (99.0 F)	-10.6 C (12.9 F)	28.9 C (84.0 F)	0.0 C (32.0 F)
Oct	30.6 C (87.1 F)	-21.0 C (-5.8 F)	28.9 C (84.0 F)	-0.6 C (30.9 F)
Nov	25.6 C (78.1 F)	-25.6 C (-14.1 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-35.6 C (-32.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Salmon AP still stand. 1910 holds the most, with 46.

Standing records at Salmon AP by the year they were set
Year set	Standing records
1905	1
1906	37
1907	23
1908	19
1909	35
1910	46
1911	16
1912	23
1913	25
1914	13
1915	19
1916	33
1917	25
1918	17
1919	35
1920	14
1921	8
1922	21
1923	9
1924	23
1925	21
1926	15
1927	18
1928	13
1929	18
1930	24
1931	28
1932	8
1933	29
1934	37
1935	16
1936	34
1937	36
1938	18
1939	25
1940	23
1941	14
1942	23
1943	14
1944	13
1945	19
1946	17
1947	20
1948	21
1949	32
1950	25
1951	17
1952	25
1953	28
1954	35
1955	26
1956	22
1957	14
1958	8
1959	21
1960	17
1961	23
1962	9
1963	15
1964	18
1965	10
1966	17
1967	12
2017	6
2018	8
2019	15
2020	14
2021	19
2022	23
2023	11
2024	13
2025	18
2026	17

All-Time Record Progression

2 new records

2 all-time records were set at Salmon AP between 8 January 1937 and 9 January 1937. Each dot is a new record.

When Salmon AP set new all-time records
Date	Kind	Detail
1937-01-08	Record low maximum temperature	Record low maximum temperature -23.3 C (-9.9 F)
1937-01-09	Record low maximum temperature	Record low maximum temperature -25.0 C (-13.0 F)

Wettest Day of Each Month

Jun: 33.8 mm (1.3 in)

The wettest day on record for each calendar month at Salmon AP. The most was 33.8 mm (1.3 in) on 1 June 1908.

Record daily precipitation for each month at Salmon AP
Month	Record daily precipitation (mm)	Date
Jan	19.3 mm (0.8 in)	15 January 1956
Feb	16.0 mm (0.6 in)	8 February 1960
Mar	14.0 mm (0.6 in)	12 March 1957
Apr	27.9 mm (1.1 in)	23 April 1936
May	33.0 mm (1.3 in)	29 May 1927
Jun	33.8 mm (1.3 in)	1 June 1908
Jul	32.3 mm (1.3 in)	15 July 1907
Aug	26.4 mm (1.0 in)	2 August 1943
Sep	30.7 mm (1.2 in)	10 September 1927
Oct	33.0 mm (1.3 in)	10 October 1911
Nov	17.8 mm (0.7 in)	3 November 2017
Dec	24.1 mm (0.9 in)	3 December 1948

Period of Record Coverage

1905 to 2026

73 years of record at Salmon AP, 1905 to 2026. 24 years have data for under 90 percent of days and are left out of rankings: 1905, 1918, 1919, 1920, 1921, 1922, 1923, 1924 and others.

Days with data per year at Salmon AP
Year	Days with data	Share of year	Complete
1905	56	15%	No
1906	365	100%	Yes
1907	363	99%	Yes
1908	365	100%	Yes
1909	363	99%	Yes
1910	348	95%	Yes
1911	339	93%	Yes
1912	366	100%	Yes
1913	363	99%	Yes
1914	334	92%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	362	99%	Yes
1918	241	66%	No
1919	193	53%	No
1920	273	75%	No
1921	294	81%	No
1922	311	85%	No
1923	298	82%	No
1924	237	65%	No
1925	308	84%	No
1926	323	88%	No
1927	257	70%	No
1928	237	65%	No
1929	311	85%	No
1930	340	93%	Yes
1931	307	84%	No
1932	131	36%	No
1933	321	88%	No
1934	325	89%	No
1935	320	88%	No
1936	336	92%	Yes
1937	356	98%	Yes
1938	365	100%	Yes
1939	357	98%	Yes
1940	362	99%	Yes
1941	363	99%	Yes
1942	364	100%	Yes
1943	351	96%	Yes
1944	365	100%	Yes
1945	365	100%	Yes
1946	364	100%	Yes
1947	365	100%	Yes
1948	365	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	358	98%	Yes
1952	361	99%	Yes
1953	363	99%	Yes
1954	363	99%	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	364	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
2017	142	39%	No
2018	356	98%	Yes
2019	327	90%	No
2020	319	87%	No
2021	327	90%	No
2022	358	98%	Yes
2023	331	91%	Yes
2024	333	91%	Yes
2025	305	84%	No
2026	271	74%	No

Latest Records

Latest records at Salmon AP
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 October 2026	Salmon AP, US	daily high max (Provisional)	28.9 C (84.0 F)	1.1 C (2.0 F)	116 years	41 of 100 (Notable)
18 September 2026	Salmon AP, US	daily high min (Provisional)	10.6 C (51.1 F)	0.6 C (1.1 F)	64 years	30 of 100 (Routine)
18 September 2026	Salmon AP, US	daily rain (Provisional)	13.2 mm (0.5 in)	1.3 mm (0.05 in)	8 years	14 of 100 (Routine)
28 August 2026	Salmon AP, US	daily high min (Provisional)	14.4 C (57.9 F)	2.7 C (4.9 F)	67 years	38 of 100 (Notable)
25 August 2026	Salmon AP, US	daily high min (Provisional)	15.0 C (59.0 F)	2.2 C (4.0 F)	4 years	17 of 100 (Routine)
22 August 2026	Salmon AP, US	daily high min (Provisional)	15.6 C (60.1 F)	1.7 C (3.1 F)	7 years	17 of 100 (Routine)
21 August 2026	Salmon AP, US	daily high max (Tie, Provisional)	35.6 C (96.1 F)	tie	108 years	10 of 100 (Routine)
14 August 2026	Salmon AP, US	daily rain	12.4 mm (0.5 in)	9.4 mm (0.37 in)	72 years	20 of 100 (Routine)
24 July 2026	Salmon AP, US	daily high max (Tie)	37.8 C (100.0 F)	tie	107 years	10 of 100 (Routine)
22 July 2026	Salmon AP, US	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	71 years	34 of 100 (Routine)
21 July 2026	Salmon AP, US	daily high min	16.7 C (62.1 F)	2.3 C (4.1 F)	65 years	36 of 100 (Notable)
28 June 2026	Salmon AP, US	daily rain	22.6 mm (0.9 in)	9.6 mm (0.38 in)	120 years	20 of 100 (Routine)
28 June 2026	Salmon AP, US	monthly low max	8.3 C (46.9 F)	1.1 C (2.0 F)	119 years	51 of 100 (Notable)
13 May 2026	Salmon AP, US	daily high min (Tie)	10.0 C (50.0 F)	tie	76 years	8 of 100 (Routine)
25 April 2026	Salmon AP, US	daily low max (Tie)	8.9 C (48.0 F)	tie	4 years	2 of 100 (Routine)
24 April 2026	Salmon AP, US	daily low max	7.2 C (45.0 F)	0.6 C (1.1 F)	61 years	29 of 100 (Routine)
25 March 2026	Salmon AP, US	daily high min	5.0 C (41.0 F)	0.6 C (1.1 F)	85 years	36 of 100 (Notable)
25 March 2026	Salmon AP, US	daily high max	21.1 C (70.0 F)	0.5 C (0.9 F)	0 years	10 of 100 (Routine)
24 March 2026	Salmon AP, US	daily high min	6.1 C (43.0 F)	2.8 C (5.0 F)	117 years	45 of 100 (Notable)
20 March 2026	Salmon AP, US	monthly high max	25.6 C (78.1 F)	0.6 C (1.1 F)	0 years	21 of 100 (Routine)

Climate Trend

50 complete years, 1906 to 2024

One stripe for each of 50 complete years at Salmon AP, 1906 to 2024. Blue stripes are years cooler than the station's own mean of 6.7 C (44.1 F); red stripes are warmer. The coolest year was 1942, at 5.1 C (41.1 F), and the warmest was 1934, at 9.4 C (48.8 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Salmon AP as warming stripes, 1906 to 2024
Year	Annual mean temperature	Difference from the station mean
1906	6.3 C	-0.47 C
1907	5.8 C	-0.88 C
1908	6.1 C	-0.58 C
1909	7.0 C	+0.23 C
1912	5.2 C	-1.50 C
1913	6.2 C	-0.53 C
1915	7.3 C	+0.57 C
1916	5.7 C	-1.06 C
1917	6.9 C	+0.21 C
1922	6.2 C	-0.51 C
1926	6.9 C	+0.19 C
1929	6.6 C	-0.12 C
1930	6.7 C	+0.00 C
1933	7.0 C	+0.24 C
1934	9.4 C	+2.63 C
1935	6.2 C	-0.48 C
1937	6.2 C	-0.52 C
1938	6.9 C	+0.21 C
1939	7.0 C	+0.29 C
1940	7.4 C	+0.64 C
1941	6.6 C	-0.08 C
1942	5.1 C	-1.67 C
1943	5.6 C	-1.12 C
1944	6.1 C	-0.59 C
1945	7.2 C	+0.46 C
1946	7.0 C	+0.29 C
1947	7.1 C	+0.41 C
1948	6.0 C	-0.69 C
1949	5.9 C	-0.78 C
1950	7.1 C	+0.35 C
1951	6.4 C	-0.32 C
1952	6.1 C	-0.59 C
1953	8.1 C	+1.40 C
1954	7.5 C	+0.80 C
1955	5.9 C	-0.84 C
1956	6.2 C	-0.51 C
1957	6.7 C	-0.01 C
1958	7.6 C	+0.84 C
1959	6.8 C	+0.09 C
1960	5.9 C	-0.83 C
1961	7.5 C	+0.80 C
1962	6.9 C	+0.14 C
1963	7.3 C	+0.61 C
1964	6.0 C	-0.69 C
1965	6.9 C	+0.22 C
1966	7.7 C	+1.02 C
1967	8.0 C	+1.24 C
2018	7.3 C	+0.59 C
2022	6.2 C	-0.48 C
2024	8.1 C	+1.34 C

The annual mean temperature here has risen by 0.09 C (0.01 to 0.18) per decade over 1906 to 2024. In Fahrenheit: 0.16 F (0.01 to 0.32) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Salmon AP
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.09 C (0.01 to 0.18) per decade	0.16 F (0.01 to 0.32) per decade	1906 to 2024	50	Rise
Mean daily maximum	0.00 C (-0.12 to 0.11) per decade	-0.01 F (-0.21 to 0.19) per decade	1906 to 2024	50	Not clearly different from zero
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.3 F (0.1 to 0.5) per decade	1906 to 2024	50	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

1905 to 2026

Yearly extremes at Salmon AP: 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)	1936	37.2 C (99.0 F)	73
Coldest night (TNn)	-38.3 C (-36.9 F)	1930	-28.3 C (-18.9 F)	73
Wettest day (Rx1day)	33.8 mm (1.3 in)	1908	17.8 mm (0.7 in)	73
Wettest five days (Rx5day)	70.6 mm (2.8 in)	2018	28.9 mm (1.1 in)	73
Longest dry spell (CDD)	70 days	1922	33 days	73

Hottest day (TXx)

The hottest day of the year at Salmon AP, 1905 to 2026. The record is 41.1 C (106.0 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Salmon AP by year
Year	Hottest day (TXx)
1905	11.1 C (52.0 F)
1906	36.1 C (97.0 F)
1907	33.3 C (91.9 F)
1908	38.3 C (100.9 F)
1909	37.8 C (100.0 F)
1910	37.8 C (100.0 F)
1911	33.9 C (93.0 F)
1912	36.1 C (97.0 F)
1913	35.6 C (96.1 F)
1914	37.8 C (100.0 F)
1915	36.1 C (97.0 F)
1916	35.6 C (96.1 F)
1917	38.9 C (102.0 F)
1918	36.7 C (98.1 F)
1919	39.4 C (102.9 F)
1920	37.2 C (99.0 F)
1921	39.4 C (102.9 F)
1922	36.7 C (98.1 F)
1923	36.7 C (98.1 F)
1924	37.8 C (100.0 F)
1925	39.4 C (102.9 F)
1926	37.8 C (100.0 F)
1927	36.7 C (98.1 F)
1928	39.4 C (102.9 F)
1929	38.9 C (102.0 F)
1930	37.2 C (99.0 F)
1931	38.9 C (102.0 F)
1932	37.2 C (99.0 F)
1933	38.9 C (102.0 F)
1934	40.0 C (104.0 F)
1935	38.3 C (100.9 F)
1936	41.1 C (106.0 F)
1937	38.3 C (100.9 F)
1938	35.6 C (96.1 F)
1939	37.8 C (100.0 F)
1940	39.4 C (102.9 F)
1941	35.6 C (96.1 F)
1942	37.2 C (99.0 F)
1943	35.6 C (96.1 F)
1944	37.8 C (100.0 F)
1945	38.9 C (102.0 F)
1946	40.0 C (104.0 F)
1947	36.7 C (98.1 F)
1948	36.1 C (97.0 F)
1949	37.8 C (100.0 F)
1950	37.2 C (99.0 F)
1951	38.3 C (100.9 F)
1952	37.2 C (99.0 F)
1953	38.3 C (100.9 F)
1954	39.4 C (102.9 F)
1955	37.2 C (99.0 F)
1956	36.7 C (98.1 F)
1957	36.7 C (98.1 F)
1958	36.1 C (97.0 F)
1959	39.4 C (102.9 F)
1960	40.6 C (105.1 F)
1961	39.4 C (102.9 F)
1962	35.6 C (96.1 F)
1963	36.7 C (98.1 F)
1964	37.2 C (99.0 F)
1965	35.0 C (95.0 F)
1966	36.7 C (98.1 F)
1967	37.2 C (99.0 F)
2017	34.4 C (93.9 F)
2018	36.1 C (97.0 F)
2019	35.0 C (95.0 F)
2020	35.6 C (96.1 F)
2021	36.7 C (98.1 F)
2022	36.1 C (97.0 F)
2023	37.2 C (99.0 F)
2024	37.8 C (100.0 F)
2025	37.8 C (100.0 F)
2026	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Salmon AP, 1905 to 2026. The record is -38.3 C (-36.9 F) in 1930, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Salmon AP by year
Year	Coldest night (TNn)
1905	-20.6 C (-5.1 F)
1906	-27.8 C (-18.0 F)
1907	-30.0 C (-22.0 F)
1908	-26.7 C (-16.1 F)
1909	-28.3 C (-18.9 F)
1910	-37.8 C (-36.0 F)
1911	-23.3 C (-9.9 F)
1912	-29.4 C (-20.9 F)
1913	-29.4 C (-20.9 F)
1914	-27.8 C (-18.0 F)
1915	-30.0 C (-22.0 F)
1916	-34.4 C (-29.9 F)
1917	-28.9 C (-20.0 F)
1918	-28.3 C (-18.9 F)
1919	-35.6 C (-32.1 F)
1920	-28.9 C (-20.0 F)
1921	-25.6 C (-14.1 F)
1922	-36.7 C (-34.1 F)
1923	-26.1 C (-15.0 F)
1924	-34.4 C (-29.9 F)
1925	-23.9 C (-11.0 F)
1926	-26.1 C (-15.0 F)
1927	-33.3 C (-27.9 F)
1928	-25.0 C (-13.0 F)
1929	-35.6 C (-32.1 F)
1930	-38.3 C (-36.9 F)
1931	-28.9 C (-20.0 F)
1932	-28.9 C (-20.0 F)
1933	-36.7 C (-34.1 F)
1934	-16.1 C (3.0 F)
1935	-22.2 C (-8.0 F)
1936	-35.6 C (-32.1 F)
1937	-38.3 C (-36.9 F)
1938	-26.7 C (-16.1 F)
1939	-30.0 C (-22.0 F)
1940	-27.2 C (-17.0 F)
1941	-23.9 C (-11.0 F)
1942	-36.1 C (-33.0 F)
1943	-30.0 C (-22.0 F)
1944	-30.6 C (-23.1 F)
1945	-23.9 C (-11.0 F)
1946	-23.3 C (-9.9 F)
1947	-28.3 C (-18.9 F)
1948	-33.3 C (-27.9 F)
1949	-37.8 C (-36.0 F)
1950	-28.3 C (-18.9 F)
1951	-32.2 C (-26.0 F)
1952	-27.2 C (-17.0 F)
1953	-15.6 C (3.9 F)
1954	-23.3 C (-9.9 F)
1955	-23.3 C (-9.9 F)
1956	-37.2 C (-35.0 F)
1957	-35.6 C (-32.1 F)
1958	-23.3 C (-9.9 F)
1959	-27.8 C (-18.0 F)
1960	-32.8 C (-27.0 F)
1961	-25.6 C (-14.1 F)
1962	-35.6 C (-32.1 F)
1963	-29.4 C (-20.9 F)
1964	-30.6 C (-23.1 F)
1965	-18.9 C (-2.0 F)
1966	-19.4 C (-2.9 F)
1967	-22.2 C (-8.0 F)
2017	-22.1 C (-7.8 F)
2018	-21.0 C (-5.8 F)
2019	-23.2 C (-9.8 F)
2020	-26.6 C (-15.9 F)
2021	-22.7 C (-8.9 F)
2022	-26.0 C (-14.8 F)
2023	-29.9 C (-21.8 F)
2024	-29.3 C (-20.7 F)
2025	-27.7 C (-17.9 F)
2026	-17.2 C (1.0 F)

Wettest day (Rx1day)

The wettest day of the year at Salmon AP, 1905 to 2026. The record is 33.8 mm (1.3 in) in 1908, marked on the chart; the median year is 17.8 mm (0.7 in).

Wettest day (Rx1day) at Salmon AP by year
Year	Wettest day (Rx1day)
1905	0.0 mm (0.00 in)
1906	15.5 mm (0.6 in)
1907	32.3 mm (1.3 in)
1908	33.8 mm (1.3 in)
1909	13.2 mm (0.5 in)
1910	14.7 mm (0.6 in)
1911	33.0 mm (1.3 in)
1912	21.6 mm (0.9 in)
1913	22.6 mm (0.9 in)
1914	26.9 mm (1.1 in)
1915	17.3 mm (0.7 in)
1916	14.2 mm (0.6 in)
1917	15.2 mm (0.6 in)
1918	12.4 mm (0.5 in)
1919	15.0 mm (0.6 in)
1920	13.7 mm (0.5 in)
1921	13.0 mm (0.5 in)
1922	18.3 mm (0.7 in)
1923	24.1 mm (0.9 in)
1924	18.0 mm (0.7 in)
1925	17.3 mm (0.7 in)
1926	10.2 mm (0.4 in)
1927	33.0 mm (1.3 in)
1928	12.7 mm (0.5 in)
1929	12.4 mm (0.5 in)
1930	15.2 mm (0.6 in)
1931	14.7 mm (0.6 in)
1932	20.1 mm (0.8 in)
1933	18.5 mm (0.7 in)
1934	16.3 mm (0.6 in)
1935	13.5 mm (0.5 in)
1936	27.9 mm (1.1 in)
1937	13.5 mm (0.5 in)
1938	22.6 mm (0.9 in)
1939	13.0 mm (0.5 in)
1940	20.3 mm (0.8 in)
1941	25.7 mm (1.0 in)
1942	25.9 mm (1.0 in)
1943	26.4 mm (1.0 in)
1944	13.7 mm (0.5 in)
1945	22.9 mm (0.9 in)
1946	16.8 mm (0.7 in)
1947	13.0 mm (0.5 in)
1948	29.2 mm (1.1 in)
1949	10.4 mm (0.4 in)
1950	13.5 mm (0.5 in)
1951	16.5 mm (0.6 in)
1952	23.4 mm (0.9 in)
1953	27.9 mm (1.1 in)
1954	15.5 mm (0.6 in)
1955	22.9 mm (0.9 in)
1956	19.3 mm (0.8 in)
1957	15.0 mm (0.6 in)
1958	18.3 mm (0.7 in)
1959	15.7 mm (0.6 in)
1960	18.3 mm (0.7 in)
1961	12.4 mm (0.5 in)
1962	19.6 mm (0.8 in)
1963	24.1 mm (0.9 in)
1964	24.6 mm (1.0 in)
1965	18.3 mm (0.7 in)
1966	30.2 mm (1.2 in)
1967	21.3 mm (0.8 in)
2017	17.8 mm (0.7 in)
2018	25.9 mm (1.0 in)
2019	15.5 mm (0.6 in)
2020	26.4 mm (1.0 in)
2021	15.5 mm (0.6 in)
2022	13.5 mm (0.5 in)
2023	22.1 mm (0.9 in)
2024	15.0 mm (0.6 in)
2025	11.2 mm (0.4 in)
2026	22.6 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Salmon AP, 1905 to 2026. The record is 70.6 mm (2.8 in) in 2018, marked on the chart; the median year is 28.9 mm (1.1 in).

Wettest five days (Rx5day) at Salmon AP by year
Year	Wettest five days (Rx5day)
1905	0.0 mm (0.00 in)
1906	29.9 mm (1.2 in)
1907	40.5 mm (1.6 in)
1908	62.6 mm (2.5 in)
1909	25.0 mm (1.0 in)
1910	32.0 mm (1.3 in)
1911	61.4 mm (2.4 in)
1912	25.0 mm (1.0 in)
1913	43.9 mm (1.7 in)
1914	27.7 mm (1.1 in)
1915	21.6 mm (0.9 in)
1916	19.5 mm (0.8 in)
1917	21.8 mm (0.9 in)
1918	17.3 mm (0.7 in)
1919	15.0 mm (0.6 in)
1920	13.7 mm (0.5 in)
1921	32.2 mm (1.3 in)
1922	27.1 mm (1.1 in)
1923	28.9 mm (1.1 in)
1924	18.0 mm (0.7 in)
1925	26.2 mm (1.0 in)
1926	15.2 mm (0.6 in)
1927	42.6 mm (1.7 in)
1928	15.2 mm (0.6 in)
1929	21.9 mm (0.9 in)
1930	22.9 mm (0.9 in)
1931	18.5 mm (0.7 in)
1932	32.0 mm (1.3 in)
1933	36.6 mm (1.4 in)
1934	17.8 mm (0.7 in)
1935	15.8 mm (0.6 in)
1936	40.4 mm (1.6 in)
1937	28.5 mm (1.1 in)
1938	35.8 mm (1.4 in)
1939	23.1 mm (0.9 in)
1940	40.7 mm (1.6 in)
1941	38.1 mm (1.5 in)
1942	41.9 mm (1.6 in)
1943	29.4 mm (1.2 in)
1944	29.2 mm (1.1 in)
1945	30.1 mm (1.2 in)
1946	31.5 mm (1.2 in)
1947	26.5 mm (1.0 in)
1948	39.7 mm (1.6 in)
1949	33.2 mm (1.3 in)
1950	19.0 mm (0.7 in)
1951	20.1 mm (0.8 in)
1952	39.6 mm (1.6 in)
1953	35.8 mm (1.4 in)
1954	32.2 mm (1.3 in)
1955	30.5 mm (1.2 in)
1956	28.9 mm (1.1 in)
1957	25.7 mm (1.0 in)
1958	27.7 mm (1.1 in)
1959	23.9 mm (0.9 in)
1960	20.9 mm (0.8 in)
1961	17.3 mm (0.7 in)
1962	25.9 mm (1.0 in)
1963	35.3 mm (1.4 in)
1964	55.6 mm (2.2 in)
1965	25.6 mm (1.0 in)
1966	46.0 mm (1.8 in)
1967	39.6 mm (1.6 in)
2017	34.3 mm (1.4 in)
2018	70.6 mm (2.8 in)
2019	23.2 mm (0.9 in)
2020	43.2 mm (1.7 in)
2021	33.3 mm (1.3 in)
2022	24.9 mm (1.0 in)
2023	31.2 mm (1.2 in)
2024	17.1 mm (0.7 in)
2025	21.6 mm (0.9 in)
2026	44.1 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Salmon AP, 1905 to 2026. The record is 70 days in 1922, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at Salmon AP by year
Year	Longest dry spell (CDD)
1905	23 days
1906	29 days
1907	25 days
1908	66 days
1909	23 days
1910	39 days
1911	38 days
1912	34 days
1913	25 days
1914	41 days
1915	34 days
1916	26 days
1917	38 days
1918	33 days
1919	60 days
1920	40 days
1921	36 days
1922	70 days
1923	45 days
1924	35 days
1925	22 days
1926	34 days
1927	20 days
1928	29 days
1929	43 days
1930	25 days
1931	24 days
1932	28 days
1933	24 days
1934	30 days
1935	40 days
1936	42 days
1937	33 days
1938	30 days
1939	51 days
1940	25 days
1941	40 days
1942	46 days
1943	27 days
1944	39 days
1945	24 days
1946	24 days
1947	58 days
1948	30 days
1949	48 days
1950	28 days
1951	44 days
1952	63 days
1953	41 days
1954	35 days
1955	31 days
1956	19 days
1957	28 days
1958	40 days
1959	38 days
1960	30 days
1961	33 days
1962	28 days
1963	39 days
1964	44 days
1965	30 days
1966	60 days
1967	21 days
2017	42 days
2018	21 days
2019	27 days
2020	25 days
2021	23 days
2022	39 days
2023	40 days
2024	21 days
2025	26 days
2026	23 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

50 years with a frost

Across 50 years with a frost, the median last spring frost at Salmon AP falls on 3 June and the median first autumn frost on 12 September, which leaves a median of 94 days between them.

Fitted over all years, the growing season changes by +3.6 days per decade at this station.

Frost dates and growing season at Salmon AP
Measure	Median, all years	Earliest period	Recent period (1941 to 2024)	Recent against earliest	Fitted trend
Last spring frost	3 June	n/a	2 June	n/a	-0.9 days per decade
First autumn frost	12 September	n/a	13 September	n/a	+2.6 days per decade
Growing days	94 days	n/a	102 days	n/a	+3.6 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

56 years, 1906 to 2024

A day with at least 18.4 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 41.0 mm (1.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Salmon 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	18.4 mm (0.7 in)
5 years	24.3 mm (1.0 in)
10 years	28.2 mm (1.1 in)
25 years	33.3 mm (1.3 in)
50 years	37.2 mm (1.5 in)
100 years	41.0 mm (1.6 in)	Longer than the 56 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, 56 years of values from 1906 to 2024.

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: 33.8 mm (1.3 in) in 1908; 33.0 mm (1.3 in) in 1911; 33.0 mm (1.3 in) in 1927.

Station Changes

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

Download the Data

Data for Salmon AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Salmon 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).