Gretna (Aut) Weather Records (CA005021220)

Record envelope, standing records and threshold days for Gretna (Aut) (CA005021220), Manitoba, Canada, with 142 years of record.

Key Facts for Gretna (Aut)

Gretna (Aut) (CA005021220) is a weather station in Manitoba, Canada at 49.03 latitude and -97.57 longitude, 253 m (830 ft) above sea level.
The station reports from 1885 to 2026, 142 years of record.
1,464 records set at Gretna (Aut) still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Gretna (Aut) set a daily record precipitation of 20.1 mm (0.8 in) on 12 October 1973.

About the Station

Location: Manitoba, Canada, 49.03 latitude, -97.57 longitude.
Elevation: 253 m (830 ft).
Period of record: 1885 to 2026, 142 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 Gretna (Aut). 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 Gretna (Aut), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	7.2 C (45.0 F)	-40.0 C (-40.0 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-41.1 C (-42.0 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-37.8 C (-36.0 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-16.1 C (3.0 F)	n/a	n/a
May	37.2 C (99.0 F)	-10.6 C (12.9 F)	n/a	n/a
Jun	36.1 C (97.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jul	37.2 C (99.0 F)	2.8 C (37.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	-0.6 C (30.9 F)	n/a	n/a
Sep	34.4 C (93.9 F)	-6.7 C (19.9 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-30.6 C (-23.1 F)	n/a	n/a
Dec	8.9 C (48.0 F)	-35.6 C (-32.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Gretna (Aut) still stand. 1958 holds the most, with 147.

All-Time Record Progression

1 new records

1 all-time records were set at Gretna (Aut) between 26 July 1963 and 26 July 1963. Each dot is a new record.

Wettest Day of Each Month

Jul: 97.5 mm (3.8 in)

The wettest day on record for each calendar month at Gretna (Aut). The most was 97.5 mm (3.8 in) on 26 July 1963.

Record daily precipitation for each month at Gretna (Aut)
Month	Record daily precipitation (mm)	Date
Jan	25.4 mm (1.0 in)	13 January 1888
Feb	36.8 mm (1.4 in)	12 February 1908
Mar	27.9 mm (1.1 in)	28 March 1905
Apr	44.5 mm (1.8 in)	27 April 1894
May	66.8 mm (2.6 in)	17 May 1896
Jun	72.4 mm (2.9 in)	5 June 1898
Jul	97.5 mm (3.8 in)	26 July 1963
Aug	59.2 mm (2.3 in)	7 August 1891
Sep	77.5 mm (3.1 in)	5 September 1910
Oct	52.1 mm (2.1 in)	3 October 1894
Nov	76.2 mm (3.0 in)	18 November 1887
Dec	38.1 mm (1.5 in)	4 December 1891

Period of Record Coverage

1955 to 1975

14 years of record at Gretna (Aut), 1955 to 1975. 3 years have data for under 90 percent of days and are left out of rankings: 1955, 1966, 1975.

Days with data per year at Gretna (Aut)
Year	Days with data	Share of year	Complete
1955	139	38%	No
1956	365	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	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	212	58%	No
1973	341	93%	Yes
1975	88	24%	No

Latest Records

Latest records at Gretna (Aut)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 1973	Gretna (Aut), CA	daily rain	20.1 mm (0.8 in)	11.0 mm (0.4 in)	86 years	20 of 100 (Routine)
29 July 1973	Gretna (Aut), CA	daily rain	9.7 mm (0.38 in)	1.6 mm (0.06 in)	68 years	20 of 100 (Routine)
24 July 1973	Gretna (Aut), CA	daily rain	14.7 mm (0.6 in)	0.2 mm (0.01 in)	12 years	11 of 100 (Routine)
17 June 1973	Gretna (Aut), CA	daily rain	38.4 mm (1.5 in)	14.5 mm (0.6 in)	67 years	40 of 100 (Notable)
22 May 1973	Gretna (Aut), CA	daily rain	25.4 mm (1.0 in)	6.3 mm (0.25 in)	70 years	36 of 100 (Notable)
9 July 1966	Gretna (Aut), CA	daily rain	10.9 mm (0.4 in)	7.3 mm (0.29 in)	63 years	20 of 100 (Routine)
2 July 1966	Gretna (Aut), CA	daily rain	42.9 mm (1.7 in)	23.8 mm (0.9 in)	67 years	45 of 100 (Notable)
24 June 1966	Gretna (Aut), CA	daily rain	17.3 mm (0.7 in)	9.9 mm (0.39 in)	61 years	20 of 100 (Routine)
1 May 1966	Gretna (Aut), CA	daily snowfall	5.6 cm (2.2 in)	5.6 cm (2.2 in)	80 years	43 of 100 (Notable)
1 May 1966	Gretna (Aut), CA	daily rain	5.8 mm (0.23 in)	0.7 mm (0.03 in)	1 year	8 of 100 (Routine)
27 April 1966	Gretna (Aut), CA	monthly snowfall	41.9 cm (16.5 in)	16.5 cm (6.5 in)	6 years	51 of 100 (Notable)
4 March 1966	Gretna (Aut), CA	daily rain	23.1 mm (0.9 in)	16.5 mm (0.6 in)	4 years	20 of 100 (Routine)
4 March 1966	Gretna (Aut), CA	monthly snowfall	24.1 cm (9.5 in)	0.5 cm (0.2 in)	9 years	21 of 100 (Routine)
8 February 1966	Gretna (Aut), CA	daily rain	5.3 mm (0.21 in)	0.2 mm (0.01 in)	60 years	20 of 100 (Routine)
15 January 1966	Gretna (Aut), CA	daily snowfall	2.5 cm (1.0 in)	1.2 cm (0.5 in)	70 years	20 of 100 (Routine)
15 January 1966	Gretna (Aut), CA	daily rain (Tie)	1.3 mm (0.05 in)	tie	70 years	7 of 100 (Routine)
9 January 1966	Gretna (Aut), CA	daily snowfall (Tie)	1.3 cm (0.5 in)	tie	6 years	2 of 100 (Routine)
26 December 1965	Gretna (Aut), CA	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	6 years	33 of 100 (Routine)
26 December 1965	Gretna (Aut), CA	daily rain	11.4 mm (0.4 in)	7.3 mm (0.29 in)	6 years	20 of 100 (Routine)
12 December 1965	Gretna (Aut), CA	daily rain	11.2 mm (0.4 in)	5.6 mm (0.22 in)	2 years	19 of 100 (Routine)

Climate Trend

10 complete years, 1956 to 1965

One stripe for each of 10 complete years at Gretna (Aut), 1956 to 1965. Blue stripes are years cooler than the station's own mean of 3.2 C (37.7 F); red stripes are warmer. The coolest year was 1965, at 1.8 C (35.3 F), and the warmest was 1963, at 4.4 C (39.9 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Gretna (Aut) as warming stripes, 1956 to 1965
Year	Annual mean temperature	Difference from the station mean
1956	2.2 C	-0.96 C
1957	3.7 C	+0.53 C
1958	3.7 C	+0.53 C
1959	2.7 C	-0.49 C
1960	3.3 C	+0.19 C
1961	4.0 C	+0.81 C
1962	2.7 C	-0.43 C
1963	4.4 C	+1.22 C
1964	3.1 C	-0.05 C
1965	1.8 C	-1.32 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

1885 to 1975

Yearly extremes at Gretna (Aut): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1964	34.4 C (93.9 F)	14
Coldest night (TNn)	-41.1 C (-42.0 F)	1966	-35.0 C (-31.0 F)	14
Wettest day (Rx1day)	97.5 mm (3.8 in)	1963	42.3 mm (1.7 in)	38
Wettest five days (Rx5day)	116.4 mm (4.6 in)	1897	61.1 mm (2.4 in)	38
Longest dry spell (CDD)	52 days	1961	28 days	38

Hottest day (TXx)

The hottest day of the year at Gretna (Aut), 1885 to 1975. The record is 37.8 C (100.0 F) in 1964, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Gretna (Aut) by year
Year	Hottest day (TXx)
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1955	34.4 C (93.9 F)
1956	34.4 C (93.9 F)
1957	33.9 C (93.0 F)
1958	35.6 C (96.1 F)
1959	37.2 C (99.0 F)
1960	36.1 C (97.0 F)
1961	36.7 C (98.1 F)
1962	32.8 C (91.0 F)
1963	33.9 C (93.0 F)
1964	37.8 C (100.0 F)
1965	36.7 C (98.1 F)
1966	34.4 C (93.9 F)
1973	34.4 C (93.9 F)
1975	8.9 C (48.0 F)

Coldest night (TNn)

The coldest night of the year at Gretna (Aut), 1885 to 1975. The record is -41.1 C (-42.0 F) in 1966, marked on the chart; the median year is -35.0 C (-31.0 F).

Coldest night (TNn) at Gretna (Aut) by year
Year	Coldest night (TNn)
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1955	-35.6 C (-32.1 F)
1956	-36.1 C (-33.0 F)
1957	-33.3 C (-27.9 F)
1958	-35.0 C (-31.0 F)
1959	-33.3 C (-27.9 F)
1960	-30.6 C (-23.1 F)
1961	-35.6 C (-32.1 F)
1962	-38.3 C (-36.9 F)
1963	-35.0 C (-31.0 F)
1964	-33.9 C (-29.0 F)
1965	-35.0 C (-31.0 F)
1966	-41.1 C (-42.0 F)
1973	-34.4 C (-29.9 F)
1975	-31.1 C (-24.0 F)

Wettest day (Rx1day)

The wettest day of the year at Gretna (Aut), 1885 to 1975. The record is 97.5 mm (3.8 in) in 1963, marked on the chart; the median year is 42.3 mm (1.7 in).

Wettest day (Rx1day) at Gretna (Aut) by year
Year	Wettest day (Rx1day)
1885	38.1 mm (1.5 in)
1886	12.7 mm (0.5 in)
1887	76.2 mm (3.0 in)
1888	40.6 mm (1.6 in)
1889	57.2 mm (2.3 in)
1891	59.2 mm (2.3 in)
1892	32.3 mm (1.3 in)
1893	37.3 mm (1.5 in)
1894	52.1 mm (2.1 in)
1895	23.4 mm (0.9 in)
1896	66.8 mm (2.6 in)
1897	69.9 mm (2.8 in)
1898	72.4 mm (2.9 in)
1899	41.9 mm (1.6 in)
1902	19.8 mm (0.8 in)
1903	41.1 mm (1.6 in)
1904	95.3 mm (3.8 in)
1905	38.4 mm (1.5 in)
1906	50.8 mm (2.0 in)
1907	22.4 mm (0.9 in)
1908	41.7 mm (1.6 in)
1909	53.3 mm (2.1 in)
1910	77.5 mm (3.1 in)
1911	55.4 mm (2.2 in)
1912	7.1 mm (0.28 in)
1955	42.7 mm (1.7 in)
1956	39.9 mm (1.6 in)
1957	65.8 mm (2.6 in)
1958	61.0 mm (2.4 in)
1959	25.4 mm (1.0 in)
1960	30.2 mm (1.2 in)
1961	27.4 mm (1.1 in)
1962	57.7 mm (2.3 in)
1963	97.5 mm (3.8 in)
1964	57.4 mm (2.3 in)
1965	37.6 mm (1.5 in)
1966	42.9 mm (1.7 in)
1973	38.4 mm (1.5 in)
1975	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Gretna (Aut), 1885 to 1975. The record is 116.4 mm (4.6 in) in 1897, marked on the chart; the median year is 61.1 mm (2.4 in).

Wettest five days (Rx5day) at Gretna (Aut) by year
Year	Wettest five days (Rx5day)
1885	55.1 mm (2.2 in)
1886	21.6 mm (0.9 in)
1887	101.6 mm (4.0 in)
1888	85.0 mm (3.3 in)
1889	79.1 mm (3.1 in)
1891	77.6 mm (3.1 in)
1892	60.7 mm (2.4 in)
1893	55.1 mm (2.2 in)
1894	56.9 mm (2.2 in)
1895	44.2 mm (1.7 in)
1896	103.9 mm (4.1 in)
1897	116.4 mm (4.6 in)
1898	78.8 mm (3.1 in)
1899	60.2 mm (2.4 in)
1902	26.2 mm (1.0 in)
1903	43.0 mm (1.7 in)
1904	95.3 mm (3.8 in)
1905	57.5 mm (2.3 in)
1906	55.2 mm (2.2 in)
1907	27.2 mm (1.1 in)
1908	72.7 mm (2.9 in)
1909	61.4 mm (2.4 in)
1910	91.5 mm (3.6 in)
1911	98.9 mm (3.9 in)
1912	10.9 mm (0.4 in)
1955	61.7 mm (2.4 in)
1956	62.8 mm (2.5 in)
1957	89.6 mm (3.5 in)
1958	112.6 mm (4.4 in)
1959	50.1 mm (2.0 in)
1960	53.0 mm (2.1 in)
1961	52.1 mm (2.1 in)
1962	75.7 mm (3.0 in)
1963	113.5 mm (4.5 in)
1964	92.7 mm (3.6 in)
1965	40.4 mm (1.6 in)
1966	56.2 mm (2.2 in)
1973	57.1 mm (2.2 in)
1975	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Gretna (Aut), 1885 to 1975. The record is 52 days in 1961, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Gretna (Aut) by year
Year	Longest dry spell (CDD)
1885	27 days
1886	34 days
1887	18 days
1888	25 days
1889	46 days
1891	27 days
1892	34 days
1893	27 days
1894	24 days
1895	28 days
1896	22 days
1897	51 days
1898	29 days
1899	30 days
1902	22 days
1903	38 days
1904	30 days
1905	33 days
1906	38 days
1907	33 days
1908	28 days
1909	28 days
1910	31 days
1911	25 days
1912	24 days
1955	19 days
1956	22 days
1957	26 days
1958	23 days
1959	32 days
1960	21 days
1961	52 days
1962	25 days
1963	33 days
1964	37 days
1965	23 days
1966	18 days
1973	13 days
1975	n/a

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.

Download the Data

Data for Gretna (Aut) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Gretna (Aut) 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).