Grand Rapids Hydro Weather Records (CA005031111)

Record envelope, standing records and threshold days for Grand Rapids Hydro (CA005031111), Manitoba, Canada, with 54 years of record.

Key Facts for Grand Rapids Hydro

Grand Rapids Hydro (CA005031111) is a weather station in Manitoba, Canada at 53.15 latitude and -99.28 longitude, 223 m (732 ft) above sea level.
The station reports from 1966 to 2019, 54 years of record.
1,464 records set at Grand Rapids Hydro still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Manitoba, Canada, 53.15 latitude, -99.28 longitude.
Elevation: 223 m (732 ft).
Period of record: 1966 to 2019, 54 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 Rapids Hydro. 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 Rapids Hydro, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	4.0 C (39.2 F)	-42.2 C (-44.0 F)	n/a	n/a
Feb	8.0 C (46.4 F)	-41.1 C (-42.0 F)	n/a	n/a
Mar	12.2 C (54.0 F)	-36.1 C (-33.0 F)	n/a	n/a
Apr	28.0 C (82.4 F)	-26.1 C (-15.0 F)	n/a	n/a
May	30.6 C (87.1 F)	-13.3 C (8.1 F)	n/a	n/a
Jun	34.0 C (93.2 F)	-1.5 C (29.3 F)	n/a	n/a
Jul	33.0 C (91.4 F)	3.3 C (37.9 F)	n/a	n/a
Aug	34.4 C (93.9 F)	1.1 C (34.0 F)	n/a	n/a
Sep	31.7 C (89.1 F)	-5.6 C (21.9 F)	n/a	n/a
Oct	22.2 C (72.0 F)	-15.6 C (3.9 F)	n/a	n/a
Nov	17.5 C (63.5 F)	-29.5 C (-21.1 F)	n/a	n/a
Dec	7.8 C (46.0 F)	-39.4 C (-38.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Grand Rapids Hydro still stand. 1967 holds the most, with 109.

Standing records at Grand Rapids Hydro by the year they were set
Year set	Standing records
1966	82
1967	109
1968	60
1969	88
1970	77
1971	57
1972	104
1973	71
1974	83
1975	65
1976	84
1977	72
1978	64
1979	85
1980	87
1981	87
1982	81
1983	108

Wettest Day of Each Month

Aug: 79.5 mm (3.1 in)

The wettest day on record for each calendar month at Grand Rapids Hydro. The most was 79.5 mm (3.1 in) on 17 August 1966.

Record daily precipitation for each month at Grand Rapids Hydro
Month	Record daily precipitation (mm)	Date
Jan	11.2 mm (0.4 in)	24 January 1968
Feb	12.0 mm (0.5 in)	27 February 1983
Mar	23.9 mm (0.9 in)	30 March 1967
Apr	22.1 mm (0.9 in)	20 April 1968
May	26.4 mm (1.0 in)	4 May 1977
Jun	52.3 mm (2.1 in)	15 June 1973
Jul	79.2 mm (3.1 in)	4 July 1966
Aug	79.5 mm (3.1 in)	17 August 1966
Sep	49.4 mm (1.9 in)	28 September 1982
Oct	39.6 mm (1.6 in)	18 October 1971
Nov	17.5 mm (0.7 in)	24 November 1970
Dec	13.2 mm (0.5 in)	2 December 1982

Period of Record Coverage

1966 to 1983

18 years of record at Grand Rapids Hydro, 1966 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1968, 1977.

Days with data per year at Grand Rapids Hydro
Year	Days with data	Share of year	Complete
1966	334	92%	Yes
1967	352	96%	Yes
1968	301	82%	No
1969	365	100%	Yes
1970	348	95%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	335	92%	Yes
1976	366	100%	Yes
1977	275	75%	No
1978	364	100%	Yes
1979	361	99%	Yes
1980	355	97%	Yes
1981	362	99%	Yes
1982	334	92%	Yes
1983	365	100%	Yes

Latest Records

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

Climate Trend

11 complete years, 1967 to 1983

One stripe for each of 11 complete years at Grand Rapids Hydro, 1967 to 1983. Blue stripes are years cooler than the station's own mean of 0.3 C (32.6 F); red stripes are warmer. The coolest year was 1972, at -1.5 C (29.3 F), and the warmest was 1981, at 2.4 C (36.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Grand Rapids Hydro as warming stripes, 1967 to 1983
Year	Annual mean temperature	Difference from the station mean
1967	-0.2 C	-0.56 C
1969	0.1 C	-0.20 C
1971	0.4 C	+0.09 C
1972	-1.5 C	-1.82 C
1973	1.1 C	+0.80 C
1974	-0.3 C	-0.61 C
1976	0.9 C	+0.63 C
1978	0.2 C	-0.07 C
1979	-0.5 C	-0.81 C
1981	2.4 C	+2.12 C
1983	0.8 C	+0.44 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

1966 to 1983

Yearly extremes at Grand Rapids Hydro: 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)	1971	31.3 C (88.3 F)	18
Coldest night (TNn)	-42.2 C (-44.0 F)	1976	-38.1 C (-36.7 F)	18
Wettest day (Rx1day)	79.5 mm (3.1 in)	1966	36.8 mm (1.4 in)	18
Wettest five days (Rx5day)	122.2 mm (4.8 in)	1973	55.5 mm (2.2 in)	18
Longest dry spell (CDD)	33 days	1966	24 days	18

Hottest day (TXx)

The hottest day of the year at Grand Rapids Hydro, 1966 to 1983. The record is 34.4 C (93.9 F) in 1971, marked on the chart; the median year is 31.3 C (88.3 F).

Hottest day (TXx) at Grand Rapids Hydro by year
Year	Hottest day (TXx)
1966	30.0 C (86.0 F)
1967	32.8 C (91.0 F)
1968	29.4 C (84.9 F)
1969	31.1 C (88.0 F)
1970	33.9 C (93.0 F)
1971	34.4 C (93.9 F)
1972	31.1 C (88.0 F)
1973	31.1 C (88.0 F)
1974	32.8 C (91.0 F)
1975	32.8 C (91.0 F)
1976	30.6 C (87.1 F)
1977	31.1 C (88.0 F)
1978	30.5 C (86.9 F)
1979	33.0 C (91.4 F)
1980	32.0 C (89.6 F)
1981	31.5 C (88.7 F)
1982	29.5 C (85.1 F)
1983	34.0 C (93.2 F)

Coldest night (TNn)

The coldest night of the year at Grand Rapids Hydro, 1966 to 1983. The record is -42.2 C (-44.0 F) in 1976, marked on the chart; the median year is -38.1 C (-36.7 F).

Coldest night (TNn) at Grand Rapids Hydro by year
Year	Coldest night (TNn)
1966	-41.1 C (-42.0 F)
1967	-39.4 C (-38.9 F)
1968	-40.6 C (-41.1 F)
1969	-38.9 C (-38.0 F)
1970	-37.2 C (-35.0 F)
1971	-38.9 C (-38.0 F)
1972	-37.8 C (-36.0 F)
1973	-37.8 C (-36.0 F)
1974	-41.1 C (-42.0 F)
1975	-38.3 C (-36.9 F)
1976	-42.2 C (-44.0 F)
1977	-37.2 C (-35.0 F)
1978	-35.5 C (-31.9 F)
1979	-37.5 C (-35.5 F)
1980	-38.0 C (-36.4 F)
1981	-35.5 C (-31.9 F)
1982	-40.5 C (-40.9 F)
1983	-37.0 C (-34.6 F)

Wettest day (Rx1day)

The wettest day of the year at Grand Rapids Hydro, 1966 to 1983. The record is 79.5 mm (3.1 in) in 1966, marked on the chart; the median year is 36.8 mm (1.4 in).

Wettest day (Rx1day) at Grand Rapids Hydro by year
Year	Wettest day (Rx1day)
1966	79.5 mm (3.1 in)
1967	26.4 mm (1.0 in)
1968	60.5 mm (2.4 in)
1969	24.6 mm (1.0 in)
1970	29.0 mm (1.1 in)
1971	39.6 mm (1.6 in)
1972	36.8 mm (1.4 in)
1973	52.3 mm (2.1 in)
1974	26.7 mm (1.1 in)
1975	19.6 mm (0.8 in)
1976	36.1 mm (1.4 in)
1977	51.8 mm (2.0 in)
1978	36.8 mm (1.4 in)
1979	18.5 mm (0.7 in)
1980	39.0 mm (1.5 in)
1981	50.0 mm (2.0 in)
1982	49.4 mm (1.9 in)
1983	31.4 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grand Rapids Hydro, 1966 to 1983. The record is 122.2 mm (4.8 in) in 1973, marked on the chart; the median year is 55.5 mm (2.2 in).

Wettest five days (Rx5day) at Grand Rapids Hydro by year
Year	Wettest five days (Rx5day)
1966	98.3 mm (3.9 in)
1967	38.4 mm (1.5 in)
1968	63.8 mm (2.5 in)
1969	44.9 mm (1.8 in)
1970	54.4 mm (2.1 in)
1971	56.4 mm (2.2 in)
1972	44.9 mm (1.8 in)
1973	122.2 mm (4.8 in)
1974	47.3 mm (1.9 in)
1975	35.6 mm (1.4 in)
1976	59.2 mm (2.3 in)
1977	62.0 mm (2.4 in)
1978	68.6 mm (2.7 in)
1979	34.4 mm (1.4 in)
1980	54.6 mm (2.1 in)
1981	57.4 mm (2.3 in)
1982	63.5 mm (2.5 in)
1983	43.7 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grand Rapids Hydro, 1966 to 1983. The record is 33 days in 1966, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Grand Rapids Hydro by year
Year	Longest dry spell (CDD)
1966	33 days
1967	32 days
1968	24 days
1969	33 days
1970	18 days
1971	29 days
1972	19 days
1973	19 days
1974	22 days
1975	14 days
1976	29 days
1977	24 days
1978	29 days
1979	19 days
1980	32 days
1981	28 days
1982	16 days
1983	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.

Download the Data

Data for Grand Rapids Hydro standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grand Rapids Hydro 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).