Kootenay Nat Park Radium Weather Records (CA001154405)

Record envelope, standing records and threshold days for Kootenay Nat Park Radium (CA001154405), British Columbia, Canada, with 44 years of record.

Key Facts for Kootenay Nat Park Radium

Kootenay Nat Park Radium (CA001154405) is a weather station in British Columbia, Canada at 50.65 latitude and -116.02 longitude, 1,088 m (3,570 ft) above sea level.
The station reports from 1925 to 1968, 44 years of record.
1,464 records set at Kootenay Nat Park Radium still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: British Columbia, Canada, 50.65 latitude, -116.02 longitude.
Elevation: 1,088 m (3,570 ft).
Period of record: 1925 to 1968, 44 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 Kootenay Nat Park Radium. 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 Kootenay Nat Park Radium, 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)	-32.2 C (-26.0 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Mar	16.7 C (62.1 F)	-28.3 C (-18.9 F)	n/a	n/a
Apr	26.1 C (79.0 F)	-11.1 C (12.0 F)	n/a	n/a
May	28.9 C (84.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jul	36.7 C (98.1 F)	0.6 C (33.1 F)	n/a	n/a
Aug	34.4 C (93.9 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-5.6 C (21.9 F)	n/a	n/a
Oct	21.1 C (70.0 F)	-11.1 C (12.0 F)	n/a	n/a
Nov	13.9 C (57.0 F)	-28.3 C (-18.9 F)	n/a	n/a
Dec	8.3 C (46.9 F)	-32.8 C (-27.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kootenay Nat Park Radium still stand. 1931 holds the most, with 220.

Standing records at Kootenay Nat Park Radium by the year they were set
Year set	Standing records
1930	78
1931	220
1955	100
1956	109
1957	137
1958	64
1959	92
1960	73
1961	83
1962	100
1963	90
1964	57
1965	90
1966	69
1967	74
1968	28

Wettest Day of Each Month

Jun: 49.8 mm (2.0 in)

The wettest day on record for each calendar month at Kootenay Nat Park Radium. The most was 49.8 mm (2.0 in) on 27 June 1958.

Record daily precipitation for each month at Kootenay Nat Park Radium
Month	Record daily precipitation (mm)	Date
Jan	22.9 mm (0.9 in)	4 January 1967
Feb	15.2 mm (0.6 in)	23 February 1957
Mar	14.5 mm (0.6 in)	22 March 1967
Apr	17.8 mm (0.7 in)	16 April 1955
May	25.4 mm (1.0 in)	30 May 1930
Jun	49.8 mm (2.0 in)	27 June 1958
Jul	40.6 mm (1.6 in)	6 July 1958
Aug	26.2 mm (1.0 in)	3 August 1965
Sep	38.1 mm (1.5 in)	21 September 1956
Oct	40.1 mm (1.6 in)	8 October 1960
Nov	22.9 mm (0.9 in)	20 November 1960
Dec	30.5 mm (1.2 in)	14 December 1929

Period of Record Coverage

1930 to 1968

16 years of record at Kootenay Nat Park Radium, 1930 to 1968. 4 years have data for under 90 percent of days and are left out of rankings: 1930, 1931, 1966, 1968.

Days with data per year at Kootenay Nat Park Radium
Year	Days with data	Share of year	Complete
1930	115	32%	No
1931	315	86%	No
1955	334	92%	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	361	99%	Yes
1966	323	88%	No
1967	337	92%	Yes
1968	177	48%	No

Latest Records

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

Climate Trend

10 complete years, 1956 to 1965

One stripe for each of 10 complete years at Kootenay Nat Park Radium, 1956 to 1965. Blue stripes are years cooler than the station's own mean of 3.8 C (38.9 F); red stripes are warmer. The coolest year was 1959, at 2.9 C (37.2 F), and the warmest was 1956, at 5.1 C (41.1 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Kootenay Nat Park Radium as warming stripes, 1956 to 1965
Year	Annual mean temperature	Difference from the station mean
1956	5.1 C	+1.24 C
1957	3.7 C	-0.15 C
1958	3.9 C	+0.04 C
1959	2.9 C	-0.92 C
1960	3.3 C	-0.56 C
1961	4.0 C	+0.13 C
1962	3.9 C	+0.05 C
1963	4.3 C	+0.52 C
1964	3.3 C	-0.54 C
1965	4.0 C	+0.18 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

1925 to 1968

Yearly extremes at Kootenay Nat Park Radium: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1931	32.8 C (91.0 F)	16
Coldest night (TNn)	-32.8 C (-27.0 F)	1964	-27.7 C (-18.0 F)	16
Wettest day (Rx1day)	49.8 mm (2.0 in)	1958	29.0 mm (1.1 in)	20
Wettest five days (Rx5day)	76.2 mm (3.0 in)	1929	44.0 mm (1.7 in)	20
Longest dry spell (CDD)	39 days	1928	24 days	20

Hottest day (TXx)

The hottest day of the year at Kootenay Nat Park Radium, 1925 to 1968. The record is 36.7 C (98.1 F) in 1931, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Kootenay Nat Park Radium by year
Year	Hottest day (TXx)
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	31.1 C (88.0 F)
1931	36.7 C (98.1 F)
1955	35.0 C (95.0 F)
1956	33.3 C (91.9 F)
1957	31.1 C (88.0 F)
1958	30.0 C (86.0 F)
1959	33.9 C (93.0 F)
1960	35.0 C (95.0 F)
1961	34.4 C (93.9 F)
1962	32.2 C (90.0 F)
1963	30.6 C (87.1 F)
1964	32.8 C (91.0 F)
1965	32.8 C (91.0 F)
1966	31.7 C (89.1 F)
1967	33.9 C (93.0 F)
1968	32.2 C (90.0 F)

Coldest night (TNn)

The coldest night of the year at Kootenay Nat Park Radium, 1925 to 1968. The record is -32.8 C (-27.0 F) in 1964, marked on the chart; the median year is -27.7 C (-18.0 F).

Coldest night (TNn) at Kootenay Nat Park Radium by year
Year	Coldest night (TNn)
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	-17.8 C (0.0 F)
1931	-17.8 C (0.0 F)
1955	-26.7 C (-16.1 F)
1956	-30.6 C (-23.1 F)
1957	-30.6 C (-23.1 F)
1958	-26.1 C (-15.0 F)
1959	-32.2 C (-26.0 F)
1960	-28.3 C (-18.9 F)
1961	-28.3 C (-18.9 F)
1962	-30.6 C (-23.1 F)
1963	-31.7 C (-25.1 F)
1964	-32.8 C (-27.0 F)
1965	-22.2 C (-8.0 F)
1966	-25.0 C (-13.0 F)
1967	-23.9 C (-11.0 F)
1968	-27.2 C (-17.0 F)

Wettest day (Rx1day)

The wettest day of the year at Kootenay Nat Park Radium, 1925 to 1968. The record is 49.8 mm (2.0 in) in 1958, marked on the chart; the median year is 29.0 mm (1.1 in).

Wettest day (Rx1day) at Kootenay Nat Park Radium by year
Year	Wettest day (Rx1day)
1925	15.7 mm (0.6 in)
1927	25.4 mm (1.0 in)
1928	20.3 mm (0.8 in)
1929	30.5 mm (1.2 in)
1930	25.4 mm (1.0 in)
1931	10.2 mm (0.4 in)
1955	30.5 mm (1.2 in)
1956	38.1 mm (1.5 in)
1957	30.5 mm (1.2 in)
1958	49.8 mm (2.0 in)
1959	24.1 mm (0.9 in)
1960	40.1 mm (1.6 in)
1961	21.6 mm (0.9 in)
1962	28.7 mm (1.1 in)
1963	34.3 mm (1.4 in)
1964	36.6 mm (1.4 in)
1965	30.5 mm (1.2 in)
1966	27.9 mm (1.1 in)
1967	22.9 mm (0.9 in)
1968	29.2 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kootenay Nat Park Radium, 1925 to 1968. The record is 76.2 mm (3.0 in) in 1929, marked on the chart; the median year is 44.0 mm (1.7 in).

Wettest five days (Rx5day) at Kootenay Nat Park Radium by year
Year	Wettest five days (Rx5day)
1925	17.0 mm (0.7 in)
1927	40.6 mm (1.6 in)
1928	35.5 mm (1.4 in)
1929	76.2 mm (3.0 in)
1930	55.9 mm (2.2 in)
1931	21.0 mm (0.8 in)
1955	42.0 mm (1.7 in)
1956	39.4 mm (1.6 in)
1957	58.9 mm (2.3 in)
1958	65.5 mm (2.6 in)
1959	44.5 mm (1.8 in)
1960	43.4 mm (1.7 in)
1961	34.8 mm (1.4 in)
1962	30.2 mm (1.2 in)
1963	49.0 mm (1.9 in)
1964	48.0 mm (1.9 in)
1965	57.1 mm (2.2 in)
1966	44.7 mm (1.8 in)
1967	51.0 mm (2.0 in)
1968	38.9 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kootenay Nat Park Radium, 1925 to 1968. The record is 39 days in 1928, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Kootenay Nat Park Radium by year
Year	Longest dry spell (CDD)
1925	13 days
1927	32 days
1928	39 days
1929	28 days
1930	32 days
1931	36 days
1955	21 days
1956	21 days
1957	20 days
1958	21 days
1959	21 days
1960	21 days
1961	27 days
1962	31 days
1963	30 days
1964	16 days
1965	27 days
1966	23 days
1967	24 days
1968	18 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 Kootenay Nat Park Radium standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kootenay Nat Park Radium 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).