Seven Persons Weather Records (CA003035840)

Record envelope, standing records and threshold days for Seven Persons (CA003035840), Alberta, Canada, with 97 years of record.

Key Facts for Seven Persons

Seven Persons (CA003035840) is a weather station in Alberta, Canada at 49.83 latitude and -110.90 longitude, 756 m (2,480 ft) above sea level.
The station reports from 1911 to 2007, 97 years of record.
362 records set at Seven Persons still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Seven Persons set a daily record snowfall of 5.1 cm (2.0 in) on 29 January 1961.

About the Station

Location: Alberta, Canada, 49.83 latitude, -110.90 longitude.
Elevation: 756 m (2,480 ft).
Period of record: 1911 to 2007, 97 years.
Eligible elements: 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 Seven Persons. 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 Seven Persons, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	34.4 C (93.9 F)	3.3 C (37.9 F)	n/a	n/a
Jul	34.4 C (93.9 F)	5.6 C (42.1 F)	n/a	n/a
Aug	32.2 C (90.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

362 standing records

362 records at Seven Persons still stand. 1956 holds the most, with 362.

Wettest Day of Each Month

Aug: 126.5 mm (5.0 in)

The wettest day on record for each calendar month at Seven Persons. The most was 126.5 mm (5.0 in) on 9 August 1916.

Record daily precipitation for each month at Seven Persons
Month	Record daily precipitation (mm)	Date
Jan	30.5 mm (1.2 in)	22 January 1935
Feb	20.3 mm (0.8 in)	17 February 1918
Mar	30.5 mm (1.2 in)	11 March 1954
Apr	46.5 mm (1.8 in)	9 April 1927
May	47.0 mm (1.9 in)	1 May 1920
Jun	90.7 mm (3.6 in)	18 June 1913
Jul	45.2 mm (1.8 in)	3 July 1916
Aug	126.5 mm (5.0 in)	9 August 1916
Sep	71.1 mm (2.8 in)	5 September 1911
Oct	30.5 mm (1.2 in)	29 October 1935
Nov	31.8 mm (1.3 in)	9 November 1911
Dec	30.5 mm (1.2 in)	29 December 1931

Period of Record Coverage

1956 to 1956

1 years of record at Seven Persons, 1956 to 1956. 1 years have data for under 90 percent of days and are left out of rankings: 1956.

Latest Records

Latest records at Seven Persons
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 January 1961	Seven Persons, CA	daily snowfall	5.1 cm (2.0 in)	1.3 cm (0.5 in)	45 years	21 of 100 (Routine)
25 January 1960	Seven Persons, CA	daily rain (Tie)	7.6 mm (0.30 in)	tie	8 years	1 of 100 (Routine)
25 January 1960	Seven Persons, CA	daily snowfall (Tie)	7.6 cm (3.0 in)	tie	8 years	1 of 100 (Routine)
11 November 1959	Seven Persons, CA	daily snowfall	1.3 cm (0.5 in)	0.8 cm (0.3 in)	4 years	6 of 100 (Routine)
3 November 1959	Seven Persons, CA	daily snowfall	12.7 cm (5.0 in)	11.4 cm (4.5 in)	33 years	33 of 100 (Routine)
3 November 1959	Seven Persons, CA	daily rain	12.7 mm (0.5 in)	6.3 mm (0.25 in)	10 years	18 of 100 (Routine)
7 October 1959	Seven Persons, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	48 years	30 of 100 (Routine)
30 September 1959	Seven Persons, CA	daily rain	3.0 mm (0.12 in)	0.5 mm (0.02 in)	42 years	16 of 100 (Routine)
16 September 1959	Seven Persons, CA	daily rain	6.9 mm (0.27 in)	1.6 mm (0.06 in)	4 years	6 of 100 (Routine)
19 August 1959	Seven Persons, CA	daily rain (Tie)	7.6 mm (0.30 in)	tie	0 years	1 of 100 (Routine)
22 April 1959	Seven Persons, CA	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	21 years	15 of 100 (Routine)
1 March 1959	Seven Persons, CA	daily rain	8.4 mm (0.33 in)	0.8 mm (0.03 in)	16 years	9 of 100 (Routine)
1 March 1959	Seven Persons, CA	daily snowfall	8.4 cm (3.3 in)	0.8 cm (0.3 in)	16 years	9 of 100 (Routine)
22 November 1958	Seven Persons, CA	daily rain	6.4 mm (0.25 in)	5.1 mm (0.20 in)	41 years	20 of 100 (Routine)
22 November 1958	Seven Persons, CA	daily snowfall	6.4 cm (2.5 in)	5.1 cm (2.0 in)	41 years	24 of 100 (Routine)
14 November 1958	Seven Persons, CA	daily snowfall	26.7 cm (10.5 in)	17.8 cm (7.0 in)	12 years	37 of 100 (Notable)
14 November 1958	Seven Persons, CA	daily rain	26.7 mm (1.1 in)	16.3 mm (0.6 in)	0 years	33 of 100 (Routine)
11 October 1958	Seven Persons, CA	daily snowfall	2.0 cm (0.8 in)	2.0 cm (0.8 in)	47 years	20 of 100 (Routine)
13 September 1958	Seven Persons, CA	daily rain	15.2 mm (0.6 in)	1.0 mm (0.04 in)	43 years	17 of 100 (Routine)
19 August 1958	Seven Persons, CA	daily rain	7.6 mm (0.30 in)	1.5 mm (0.06 in)	32 years	14 of 100 (Routine)

Extremes by Year

1911 to 1961

Yearly extremes at Seven Persons: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1956	34.4 C (93.9 F)	1
Coldest night (TNn)	1.1 C (34.0 F)	1956	1.1 C (34.0 F)	1
Wettest day (Rx1day)	126.5 mm (5.0 in)	1916	30.5 mm (1.2 in)	51
Wettest five days (Rx5day)	127.5 mm (5.0 in)	1916	43.7 mm (1.7 in)	51
Longest dry spell (CDD)	65 days	1941	34 days	51

Hottest day (TXx)

The hottest day of the year at Seven Persons, 1911 to 1961. The record is 34.4 C (93.9 F) in 1956, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Seven Persons by year
Year	Hottest day (TXx)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	34.4 C (93.9 F)
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a

Coldest night (TNn)

The coldest night of the year at Seven Persons, 1911 to 1961. The record is 1.1 C (34.0 F) in 1956, marked on the chart; the median year is 1.1 C (34.0 F).

Coldest night (TNn) at Seven Persons by year
Year	Coldest night (TNn)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	1.1 C (34.0 F)
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a

Wettest day (Rx1day)

The wettest day of the year at Seven Persons, 1911 to 1961. The record is 126.5 mm (5.0 in) in 1916, marked on the chart; the median year is 30.5 mm (1.2 in).

Wettest day (Rx1day) at Seven Persons by year
Year	Wettest day (Rx1day)
1911	71.1 mm (2.8 in)
1912	19.8 mm (0.8 in)
1913	90.7 mm (3.6 in)
1914	39.6 mm (1.6 in)
1915	38.1 mm (1.5 in)
1916	126.5 mm (5.0 in)
1917	17.0 mm (0.7 in)
1918	20.3 mm (0.8 in)
1919	44.5 mm (1.8 in)
1920	47.0 mm (1.9 in)
1921	22.6 mm (0.9 in)
1922	29.0 mm (1.1 in)
1923	38.9 mm (1.5 in)
1924	30.5 mm (1.2 in)
1925	25.4 mm (1.0 in)
1926	29.2 mm (1.1 in)
1927	46.5 mm (1.8 in)
1928	30.0 mm (1.2 in)
1929	20.3 mm (0.8 in)
1930	27.7 mm (1.1 in)
1931	30.5 mm (1.2 in)
1932	39.4 mm (1.6 in)
1933	20.3 mm (0.8 in)
1934	31.8 mm (1.3 in)
1935	40.1 mm (1.6 in)
1936	13.0 mm (0.5 in)
1937	34.3 mm (1.4 in)
1938	35.6 mm (1.4 in)
1939	42.4 mm (1.7 in)
1940	35.6 mm (1.4 in)
1941	55.1 mm (2.2 in)
1942	30.5 mm (1.2 in)
1943	20.3 mm (0.8 in)
1944	25.4 mm (1.0 in)
1945	34.3 mm (1.4 in)
1946	27.9 mm (1.1 in)
1947	27.2 mm (1.1 in)
1948	19.3 mm (0.8 in)
1949	29.2 mm (1.1 in)
1950	36.3 mm (1.4 in)
1951	45.2 mm (1.8 in)
1952	18.3 mm (0.7 in)
1953	75.7 mm (3.0 in)
1954	33.8 mm (1.3 in)
1955	25.9 mm (1.0 in)
1956	29.2 mm (1.1 in)
1957	20.3 mm (0.8 in)
1958	43.2 mm (1.7 in)
1959	25.1 mm (1.0 in)
1960	7.6 mm (0.30 in)
1961	11.4 mm (0.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Seven Persons, 1911 to 1961. The record is 127.5 mm (5.0 in) in 1916, marked on the chart; the median year is 43.7 mm (1.7 in).

Wettest five days (Rx5day) at Seven Persons by year
Year	Wettest five days (Rx5day)
1911	107.9 mm (4.2 in)
1912	31.7 mm (1.2 in)
1913	116.4 mm (4.6 in)
1914	49.5 mm (1.9 in)
1915	65.3 mm (2.6 in)
1916	127.5 mm (5.0 in)
1917	17.0 mm (0.7 in)
1918	33.8 mm (1.3 in)
1919	51.4 mm (2.0 in)
1920	53.9 mm (2.1 in)
1921	46.3 mm (1.8 in)
1922	36.9 mm (1.5 in)
1923	57.2 mm (2.3 in)
1924	30.5 mm (1.2 in)
1925	27.9 mm (1.1 in)
1926	35.3 mm (1.4 in)
1927	55.7 mm (2.2 in)
1928	59.7 mm (2.4 in)
1929	28.9 mm (1.1 in)
1930	41.4 mm (1.6 in)
1931	31.8 mm (1.3 in)
1932	39.4 mm (1.6 in)
1933	41.2 mm (1.6 in)
1934	56.0 mm (2.2 in)
1935	47.0 mm (1.9 in)
1936	32.3 mm (1.3 in)
1937	54.1 mm (2.1 in)
1938	65.1 mm (2.6 in)
1939	70.6 mm (2.8 in)
1940	55.1 mm (2.2 in)
1941	71.1 mm (2.8 in)
1942	44.2 mm (1.7 in)
1943	20.3 mm (0.8 in)
1944	33.6 mm (1.3 in)
1945	42.7 mm (1.7 in)
1946	34.3 mm (1.4 in)
1947	50.6 mm (2.0 in)
1948	25.7 mm (1.0 in)
1949	34.3 mm (1.4 in)
1950	48.5 mm (1.9 in)
1951	102.1 mm (4.0 in)
1952	28.8 mm (1.1 in)
1953	84.1 mm (3.3 in)
1954	57.2 mm (2.3 in)
1955	41.4 mm (1.6 in)
1956	47.3 mm (1.9 in)
1957	38.1 mm (1.5 in)
1958	43.7 mm (1.7 in)
1959	41.4 mm (1.6 in)
1960	15.2 mm (0.6 in)
1961	11.4 mm (0.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Seven Persons, 1911 to 1961. The record is 65 days in 1941, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Seven Persons by year
Year	Longest dry spell (CDD)
1911	43 days
1912	28 days
1913	43 days
1914	36 days
1915	50 days
1916	25 days
1917	35 days
1918	23 days
1919	39 days
1920	37 days
1921	20 days
1922	24 days
1923	32 days
1924	34 days
1925	40 days
1926	38 days
1927	31 days
1928	51 days
1929	56 days
1930	30 days
1931	57 days
1932	29 days
1933	29 days
1934	32 days
1935	44 days
1936	43 days
1937	31 days
1938	46 days
1939	49 days
1940	30 days
1941	65 days
1942	32 days
1943	41 days
1944	32 days
1945	27 days
1946	29 days
1947	24 days
1948	34 days
1949	49 days
1950	34 days
1951	31 days
1952	50 days
1953	51 days
1954	47 days
1955	46 days
1956	23 days
1957	46 days
1958	33 days
1959	46 days
1960	24 days
1961	28 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.

Rainfall Return Levels

47 years, 1912 to 1959

A day with at least 29.9 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 113.2 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Seven Persons: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.9 mm (1.2 in)
5 years	43.4 mm (1.7 in)
10 years	55.1 mm (2.2 in)
25 years	74.0 mm (2.9 in)
50 years	91.7 mm (3.6 in)	Longer than the 47 years of record
100 years	113.2 mm (4.5 in)	Longer than the 47 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, 47 years of values from 1912 to 1959.

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: 126.5 mm (5.0 in) in 1916; 90.7 mm (3.6 in) in 1913; 75.7 mm (3.0 in) in 1953.

Download the Data

Data for Seven Persons standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Seven Persons 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 2026-10-15 (15 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).