Grand Bank Weather Records (CA008402000)

Record envelope, standing records and threshold days for Grand Bank (CA008402000), Newfoundland and Labrador, Canada, with 33 years of record.

Key Facts for Grand Bank

Grand Bank (CA008402000) is a weather station in Newfoundland and Labrador, Canada at 47.10 latitude and -55.77 longitude, 2 m (7 ft) above sea level.
The station reports from 1934 to 1966, 33 years of record.
1,464 records set at Grand Bank still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Newfoundland and Labrador, Canada, 47.10 latitude, -55.77 longitude.
Elevation: 2 m (7 ft).
Period of record: 1934 to 1966, 33 years.
Eligible elements: none yet.

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 Grand Bank. 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 Grand Bank, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Feb	11.1 C (52.0 F)	-18.9 C (-2.0 F)	n/a	n/a
Mar	15.0 C (59.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Apr	16.7 C (62.1 F)	-9.4 C (15.1 F)	n/a	n/a
May	22.2 C (72.0 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	25.0 C (77.0 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	28.9 C (84.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	30.0 C (86.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	25.0 C (77.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	21.7 C (71.1 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	18.3 C (64.9 F)	-8.9 C (16.0 F)	n/a	n/a
Dec	12.8 C (55.0 F)	-15.0 C (5.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Grand Bank still stand. 1937 holds the most, with 90.

Standing records at Grand Bank by the year they were set
Year set	Standing records
1934	10
1935	67
1936	66
1937	90
1938	68
1939	43
1940	54
1941	46
1942	60
1943	58
1944	29
1945	41
1946	51
1947	67
1948	51
1949	18
1950	11
1951	64
1952	22
1953	55
1954	60
1955	34
1956	43
1957	42
1958	49
1959	40
1960	24
1961	36
1962	43
1963	54
1964	37
1965	24
1966	7

Wettest Day of Each Month

Nov: 106.7 mm (4.2 in)

The wettest day on record for each calendar month at Grand Bank. The most was 106.7 mm (4.2 in) on 21 November 1937.

Record daily precipitation for each month at Grand Bank
Month	Record daily precipitation (mm)	Date
Jan	77.0 mm (3.0 in)	28 January 1966
Feb	77.5 mm (3.1 in)	14 February 1948
Mar	54.1 mm (2.1 in)	12 March 1943
Apr	63.0 mm (2.5 in)	24 April 1953
May	55.6 mm (2.2 in)	28 May 1956
Jun	62.2 mm (2.4 in)	16 June 1936
Jul	52.6 mm (2.1 in)	26 July 1941
Aug	93.0 mm (3.7 in)	2 August 1941
Sep	61.7 mm (2.4 in)	10 September 1963
Oct	99.1 mm (3.9 in)	6 October 1953
Nov	106.7 mm (4.2 in)	21 November 1937
Dec	64.8 mm (2.6 in)	31 December 1958

Period of Record Coverage

1934 to 1966

33 years of record at Grand Bank, 1934 to 1966. 6 years have data for under 90 percent of days and are left out of rankings: 1934, 1949, 1950, 1951, 1952, 1966.

Days with data per year at Grand Bank
Year	Days with data	Share of year	Complete
1934	71	19%	No
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	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	120	33%	No
1950	28	8%	No
1951	243	67%	No
1952	289	79%	No
1953	365	100%	Yes
1954	365	100%	Yes
1955	355	97%	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	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	50	14%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

27 complete years, 1935 to 1965

One stripe for each of 27 complete years at Grand Bank, 1935 to 1965. Blue stripes are years cooler than the station's own mean of 5.5 C (41.8 F); red stripes are warmer. The coolest year was 1941, at 4.6 C (40.3 F), and the warmest was 1937, at 6.3 C (43.4 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Grand Bank as warming stripes, 1935 to 1965
Year	Annual mean temperature	Difference from the station mean
1935	5.0 C	-0.44 C
1936	6.1 C	+0.60 C
1937	6.3 C	+0.88 C
1938	5.5 C	+0.06 C
1939	4.7 C	-0.80 C
1940	5.7 C	+0.25 C
1941	4.6 C	-0.85 C
1942	6.0 C	+0.55 C
1943	5.0 C	-0.46 C
1944	5.5 C	+0.03 C
1945	5.6 C	+0.11 C
1946	5.7 C	+0.24 C
1947	5.2 C	-0.23 C
1948	4.7 C	-0.78 C
1953	6.2 C	+0.73 C
1954	5.9 C	+0.43 C
1955	5.2 C	-0.22 C
1956	5.4 C	-0.08 C
1957	5.2 C	-0.25 C
1958	6.3 C	+0.81 C
1959	5.0 C	-0.49 C
1960	6.2 C	+0.76 C
1961	5.7 C	+0.21 C
1962	5.5 C	+0.03 C
1963	5.2 C	-0.22 C
1964	5.0 C	-0.47 C
1965	5.0 C	-0.42 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

1934 to 1966

Yearly extremes at Grand Bank: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.0 C (86.0 F)	1951	24.4 C (75.9 F)	33
Coldest night (TNn)	-20.0 C (-4.0 F)	1935	-14.4 C (6.1 F)	33
Wettest day (Rx1day)	106.7 mm (4.2 in)	1937	55.6 mm (2.2 in)	33
Wettest five days (Rx5day)	126.0 mm (5.0 in)	1937	90.2 mm (3.6 in)	33
Longest dry spell (CDD)	22 days	1947	12 days	33

Hottest day (TXx)

The hottest day of the year at Grand Bank, 1934 to 1966. The record is 30.0 C (86.0 F) in 1951, marked on the chart; the median year is 24.4 C (75.9 F).

Hottest day (TXx) at Grand Bank by year
Year	Hottest day (TXx)
1934	16.7 C (62.1 F)
1935	25.0 C (77.0 F)
1936	25.0 C (77.0 F)
1937	27.2 C (81.0 F)
1938	26.7 C (80.1 F)
1939	25.6 C (78.1 F)
1940	27.8 C (82.0 F)
1941	23.9 C (75.0 F)
1942	25.0 C (77.0 F)
1943	24.4 C (75.9 F)
1944	25.0 C (77.0 F)
1945	25.0 C (77.0 F)
1946	24.4 C (75.9 F)
1947	26.7 C (80.1 F)
1948	23.3 C (73.9 F)
1949	15.0 C (59.0 F)
1950	15.6 C (60.1 F)
1951	30.0 C (86.0 F)
1952	26.1 C (79.0 F)
1953	23.3 C (73.9 F)
1954	25.6 C (78.1 F)
1955	25.6 C (78.1 F)
1956	23.9 C (75.0 F)
1957	24.4 C (75.9 F)
1958	23.9 C (75.0 F)
1959	24.4 C (75.9 F)
1960	23.9 C (75.0 F)
1961	27.2 C (81.0 F)
1962	22.8 C (73.0 F)
1963	22.8 C (73.0 F)
1964	22.8 C (73.0 F)
1965	24.4 C (75.9 F)
1966	5.0 C (41.0 F)

Coldest night (TNn)

The coldest night of the year at Grand Bank, 1934 to 1966. The record is -20.0 C (-4.0 F) in 1935, marked on the chart; the median year is -14.4 C (6.1 F).

Coldest night (TNn) at Grand Bank by year
Year	Coldest night (TNn)
1934	-10.6 C (12.9 F)
1935	-20.0 C (-4.0 F)
1936	-14.4 C (6.1 F)
1937	-14.4 C (6.1 F)
1938	-16.7 C (1.9 F)
1939	-18.3 C (-0.9 F)
1940	-15.0 C (5.0 F)
1941	-12.8 C (9.0 F)
1942	-15.0 C (5.0 F)
1943	-17.2 C (1.0 F)
1944	-17.2 C (1.0 F)
1945	-17.8 C (0.0 F)
1946	-13.3 C (8.1 F)
1947	-15.6 C (3.9 F)
1948	-17.2 C (1.0 F)
1949	-17.2 C (1.0 F)
1950	-7.8 C (18.0 F)
1951	-17.2 C (1.0 F)
1952	-13.3 C (8.1 F)
1953	-12.2 C (10.0 F)
1954	-12.2 C (10.0 F)
1955	-12.8 C (9.0 F)
1956	-14.4 C (6.1 F)
1957	-20.0 C (-4.0 F)
1958	-13.9 C (7.0 F)
1959	-17.8 C (0.0 F)
1960	-12.2 C (10.0 F)
1961	-16.7 C (1.9 F)
1962	-15.0 C (5.0 F)
1963	-13.9 C (7.0 F)
1964	-14.4 C (6.1 F)
1965	-13.9 C (7.0 F)
1966	-12.2 C (10.0 F)

Wettest day (Rx1day)

The wettest day of the year at Grand Bank, 1934 to 1966. The record is 106.7 mm (4.2 in) in 1937, marked on the chart; the median year is 55.6 mm (2.2 in).

Wettest day (Rx1day) at Grand Bank by year
Year	Wettest day (Rx1day)
1934	38.1 mm (1.5 in)
1935	55.9 mm (2.2 in)
1936	62.2 mm (2.4 in)
1937	106.7 mm (4.2 in)
1938	57.2 mm (2.3 in)
1939	52.1 mm (2.1 in)
1940	34.3 mm (1.4 in)
1941	93.0 mm (3.7 in)
1942	60.5 mm (2.4 in)
1943	78.7 mm (3.1 in)
1944	48.8 mm (1.9 in)
1945	45.0 mm (1.8 in)
1946	34.3 mm (1.4 in)
1947	25.1 mm (1.0 in)
1948	77.5 mm (3.1 in)
1949	39.4 mm (1.6 in)
1950	42.2 mm (1.7 in)
1951	49.5 mm (1.9 in)
1952	63.2 mm (2.5 in)
1953	99.1 mm (3.9 in)
1954	92.7 mm (3.6 in)
1955	39.4 mm (1.6 in)
1956	55.6 mm (2.2 in)
1957	37.8 mm (1.5 in)
1958	64.8 mm (2.6 in)
1959	48.0 mm (1.9 in)
1960	36.1 mm (1.4 in)
1961	34.3 mm (1.4 in)
1962	43.9 mm (1.7 in)
1963	61.7 mm (2.4 in)
1964	59.9 mm (2.4 in)
1965	68.6 mm (2.7 in)
1966	77.0 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grand Bank, 1934 to 1966. The record is 126.0 mm (5.0 in) in 1937, marked on the chart; the median year is 90.2 mm (3.6 in).

Wettest five days (Rx5day) at Grand Bank by year
Year	Wettest five days (Rx5day)
1934	63.0 mm (2.5 in)
1935	125.5 mm (4.9 in)
1936	83.3 mm (3.3 in)
1937	126.0 mm (5.0 in)
1938	89.6 mm (3.5 in)
1939	104.4 mm (4.1 in)
1940	62.4 mm (2.5 in)
1941	98.3 mm (3.9 in)
1942	86.7 mm (3.4 in)
1943	104.1 mm (4.1 in)
1944	113.9 mm (4.5 in)
1945	93.3 mm (3.7 in)
1946	82.7 mm (3.3 in)
1947	66.6 mm (2.6 in)
1948	120.7 mm (4.8 in)
1949	98.5 mm (3.9 in)
1950	63.8 mm (2.5 in)
1951	73.6 mm (2.9 in)
1952	114.3 mm (4.5 in)
1953	118.8 mm (4.7 in)
1954	117.9 mm (4.6 in)
1955	75.4 mm (3.0 in)
1956	96.6 mm (3.8 in)
1957	68.0 mm (2.7 in)
1958	72.0 mm (2.8 in)
1959	76.1 mm (3.0 in)
1960	47.7 mm (1.9 in)
1961	60.5 mm (2.4 in)
1962	101.5 mm (4.0 in)
1963	90.2 mm (3.6 in)
1964	101.3 mm (4.0 in)
1965	91.7 mm (3.6 in)
1966	88.4 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grand Bank, 1934 to 1966. The record is 22 days in 1947, marked on the chart; the median year is 12 days.

Longest dry spell (CDD) at Grand Bank by year
Year	Longest dry spell (CDD)
1934	6 days
1935	12 days
1936	10 days
1937	19 days
1938	11 days
1939	16 days
1940	12 days
1941	14 days
1942	19 days
1943	12 days
1944	11 days
1945	11 days
1946	10 days
1947	22 days
1948	10 days
1949	9 days
1950	11 days
1951	15 days
1952	15 days
1953	14 days
1954	12 days
1955	16 days
1956	9 days
1957	12 days
1958	11 days
1959	8 days
1960	20 days
1961	13 days
1962	12 days
1963	12 days
1964	11 days
1965	13 days
1966	10 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Grand Bank falls on 24 May and the median first autumn frost on 17 October, which leaves a median of 144 days between them.

Fitted over all years, the growing season changes by -1.0 days per decade at this station.

Frost dates and growing season at Grand Bank
Measure	Median, all years	Earliest period	Recent period (1935 to 1965)	Recent against earliest	Fitted trend
Last spring frost	24 May	n/a	24 May	n/a	+0.6 days per decade
First autumn frost	17 October	n/a	17 October	n/a	-0.4 days per decade
Growing days	144 days	n/a	144 days	n/a	-1.0 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.

Download the Data

Data for Grand Bank standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grand Bank 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 2026-10-13 (13 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).