Tlell Weather Records (CA001058190)

Record envelope, standing records and threshold days for Tlell (CA001058190), British Columbia, Canada, with 50 years of record.

Key Facts for Tlell

Tlell (CA001058190) is a weather station in British Columbia, Canada at 53.50 latitude and -131.95 longitude, 5 m (16 ft) above sea level.
The station reports from 1950 to 1999, 50 years of record.
1,464 records set at Tlell still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Tlell set a daily record precipitation of 20.0 mm (0.8 in) on 5 November 1983.

About the Station

Location: British Columbia, Canada, 53.50 latitude, -131.95 longitude.
Elevation: 5 m (16 ft).
Period of record: 1950 to 1999, 50 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 Tlell. 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 Tlell, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.8 C (55.0 F)	-15.0 C (5.0 F)	n/a	n/a
Feb	11.7 C (53.1 F)	-11.7 C (10.9 F)	n/a	n/a
Mar	18.9 C (66.0 F)	-8.9 C (16.0 F)	n/a	n/a
Apr	20.6 C (69.1 F)	-3.9 C (25.0 F)	n/a	n/a
May	25.0 C (77.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	26.7 C (80.1 F)	1.1 C (34.0 F)	n/a	n/a
Jul	32.2 C (90.0 F)	4.4 C (39.9 F)	n/a	n/a
Aug	28.5 C (83.3 F)	3.3 C (37.9 F)	n/a	n/a
Sep	23.9 C (75.0 F)	1.1 C (34.0 F)	n/a	n/a
Oct	19.4 C (66.9 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	13.3 C (55.9 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	12.2 C (54.0 F)	-16.7 C (1.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tlell still stand. 1958 holds the most, with 94.

Standing records at Tlell by the year they were set
Year set	Standing records
1957	42
1958	94
1959	54
1960	51
1961	41
1962	57
1963	84
1964	52
1965	77
1966	63
1967	46
1968	54
1969	89
1970	42
1971	71
1972	76
1973	59
1974	32
1975	64
1976	34
1977	45
1978	21
1979	32
1980	49
1981	66
1982	35
1983	34

Wettest Day of Each Month

Oct: 50.3 mm (2.0 in)

The wettest day on record for each calendar month at Tlell. The most was 50.3 mm (2.0 in) on 18 October 1951.

Record daily precipitation for each month at Tlell
Month	Record daily precipitation (mm)	Date
Jan	40.4 mm (1.6 in)	30 January 1960
Feb	37.8 mm (1.5 in)	7 February 1963
Mar	28.7 mm (1.1 in)	16 March 1959
Apr	35.1 mm (1.4 in)	15 April 1952
May	29.0 mm (1.1 in)	5 May 1963
Jun	22.9 mm (0.9 in)	10 June 1957
Jul	41.1 mm (1.6 in)	15 July 1962
Aug	50.0 mm (2.0 in)	31 August 1965
Sep	46.8 mm (1.8 in)	12 September 1983
Oct	50.3 mm (2.0 in)	18 October 1951
Nov	42.4 mm (1.7 in)	18 November 1968
Dec	41.4 mm (1.6 in)	26 December 1959

Period of Record Coverage

1957 to 1983

27 years of record at Tlell, 1957 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1957, 1959.

Days with data per year at Tlell
Year	Days with data	Share of year	Complete
1957	269	74%	No
1958	362	99%	Yes
1959	327	90%	No
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	352	96%	Yes
1965	364	100%	Yes
1966	361	99%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	361	99%	Yes
1970	358	98%	Yes
1971	357	98%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes

Latest Records

Latest records at Tlell
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 November 1983	Tlell, CA	daily rain	20.0 mm (0.8 in)	2.7 mm (0.11 in)	4 years	7 of 100 (Routine)
25 October 1983	Tlell, CA	daily rain	15.6 mm (0.6 in)	3.4 mm (0.13 in)	5 years	8 of 100 (Routine)
24 September 1983	Tlell, CA	daily rain	43.0 mm (1.7 in)	22.2 mm (0.9 in)	30 years	47 of 100 (Notable)
12 September 1983	Tlell, CA	monthly rain	46.8 mm (1.8 in)	2.9 mm (0.11 in)	4 years	18 of 100 (Routine)
3 August 1983	Tlell, CA	daily rain	8.0 mm (0.31 in)	0.4 mm (0.02 in)	8 years	5 of 100 (Routine)
29 July 1983	Tlell, CA	daily rain	15.9 mm (0.6 in)	7.8 mm (0.31 in)	4 years	20 of 100 (Routine)
11 June 1983	Tlell, CA	daily rain	13.3 mm (0.5 in)	2.4 mm (0.09 in)	9 years	10 of 100 (Routine)
26 March 1983	Tlell, CA	daily rain	20.6 mm (0.8 in)	8.9 mm (0.35 in)	26 years	20 of 100 (Routine)
8 February 1983	Tlell, CA	daily rain	22.9 mm (0.9 in)	11.2 mm (0.4 in)	7 years	20 of 100 (Routine)
25 January 1983	Tlell, CA	daily rain	25.6 mm (1.0 in)	6.2 mm (0.24 in)	1 year	13 of 100 (Routine)
24 January 1983	Tlell, CA	daily rain	12.4 mm (0.5 in)	4.0 mm (0.16 in)	9 years	11 of 100 (Routine)
23 January 1983	Tlell, CA	daily rain	33.8 mm (1.3 in)	4.6 mm (0.18 in)	19 years	15 of 100 (Routine)
10 January 1983	Tlell, CA	daily rain	27.0 mm (1.1 in)	14.8 mm (0.6 in)	11 years	30 of 100 (Routine)
24 December 1982	Tlell, CA	daily rain	25.0 mm (1.0 in)	5.4 mm (0.21 in)	15 years	14 of 100 (Routine)
15 November 1982	Tlell, CA	daily rain	15.5 mm (0.6 in)	1.8 mm (0.07 in)	16 years	10 of 100 (Routine)
12 July 1982	Tlell, CA	daily rain	24.1 mm (0.9 in)	8.1 mm (0.32 in)	21 years	20 of 100 (Routine)
20 April 1982	Tlell, CA	daily rain	15.0 mm (0.6 in)	1.0 mm (0.04 in)	12 years	8 of 100 (Routine)
16 April 1982	Tlell, CA	daily snowfall	2.8 cm (1.1 in)	2.5 cm (1.0 in)	9 years	10 of 100 (Routine)
14 April 1982	Tlell, CA	daily rain	10.2 mm (0.4 in)	3.1 mm (0.12 in)	27 years	18 of 100 (Routine)
10 March 1982	Tlell, CA	daily snowfall	1.4 cm (0.6 in)	0.9 cm (0.4 in)	4 years	6 of 100 (Routine)

Climate Trend

24 complete years, 1958 to 1983

One stripe for each of 24 complete years at Tlell, 1958 to 1983. Blue stripes are years cooler than the station's own mean of 7.5 C (45.4 F); red stripes are warmer. The coolest year was 1975, at 6.3 C (43.3 F), and the warmest was 1958, at 8.7 C (47.7 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Tlell as warming stripes, 1958 to 1983
Year	Annual mean temperature	Difference from the station mean
1958	8.7 C	+1.24 C
1960	7.6 C	+0.13 C
1961	7.9 C	+0.46 C
1962	7.6 C	+0.18 C
1963	8.2 C	+0.72 C
1965	7.6 C	+0.16 C
1966	7.6 C	+0.12 C
1967	7.6 C	+0.15 C
1968	7.1 C	-0.35 C
1969	7.1 C	-0.32 C
1970	7.2 C	-0.29 C
1971	6.4 C	-1.10 C
1972	6.3 C	-1.14 C
1973	6.4 C	-1.03 C
1974	7.2 C	-0.27 C
1975	6.3 C	-1.17 C
1976	7.2 C	-0.27 C
1977	7.6 C	+0.09 C
1978	7.8 C	+0.29 C
1979	7.9 C	+0.39 C
1980	8.1 C	+0.63 C
1981	8.6 C	+1.09 C
1982	7.0 C	-0.51 C
1983	8.3 C	+0.85 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

1950 to 1983

Yearly extremes at Tlell: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.2 C (90.0 F)	1971	25.6 C (78.1 F)	27
Coldest night (TNn)	-16.7 C (1.9 F)	1970	-9.4 C (15.1 F)	27
Wettest day (Rx1day)	50.3 mm (2.0 in)	1951	34.6 mm (1.4 in)	34
Wettest five days (Rx5day)	118.1 mm (4.6 in)	1978	74.7 mm (2.9 in)	34
Longest dry spell (CDD)	44 days	1952	15 days	34

Hottest day (TXx)

The hottest day of the year at Tlell, 1950 to 1983. The record is 32.2 C (90.0 F) in 1971, marked on the chart; the median year is 25.6 C (78.1 F).

Hottest day (TXx) at Tlell by year
Year	Hottest day (TXx)
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	23.9 C (75.0 F)
1958	28.9 C (84.0 F)
1959	22.2 C (72.0 F)
1960	28.3 C (82.9 F)
1961	27.2 C (81.0 F)
1962	25.6 C (78.1 F)
1963	23.9 C (75.0 F)
1964	23.9 C (75.0 F)
1965	26.7 C (80.1 F)
1966	26.1 C (79.0 F)
1967	24.4 C (75.9 F)
1968	25.6 C (78.1 F)
1969	26.7 C (80.1 F)
1970	21.1 C (70.0 F)
1971	32.2 C (90.0 F)
1972	26.1 C (79.0 F)
1973	23.9 C (75.0 F)
1974	24.4 C (75.9 F)
1975	23.3 C (73.9 F)
1976	22.8 C (73.0 F)
1977	28.3 C (82.9 F)
1978	24.4 C (75.9 F)
1979	25.6 C (78.1 F)
1980	25.5 C (77.9 F)
1981	28.5 C (83.3 F)
1982	25.0 C (77.0 F)
1983	26.5 C (79.7 F)

Coldest night (TNn)

The coldest night of the year at Tlell, 1950 to 1983. The record is -16.7 C (1.9 F) in 1970, marked on the chart; the median year is -9.4 C (15.1 F).

Coldest night (TNn) at Tlell by year
Year	Coldest night (TNn)
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	-3.9 C (25.0 F)
1958	-7.8 C (18.0 F)
1959	-9.4 C (15.1 F)
1960	-5.0 C (23.0 F)
1961	-5.6 C (21.9 F)
1962	-7.2 C (19.0 F)
1963	-8.9 C (16.0 F)
1964	-11.7 C (10.9 F)
1965	-13.3 C (8.1 F)
1966	-10.6 C (12.9 F)
1967	-6.7 C (19.9 F)
1968	-12.8 C (9.0 F)
1969	-15.0 C (5.0 F)
1970	-16.7 C (1.9 F)
1971	-11.7 C (10.9 F)
1972	-12.2 C (10.0 F)
1973	-6.1 C (21.0 F)
1974	-11.7 C (10.9 F)
1975	-11.1 C (12.0 F)
1976	-8.3 C (17.1 F)
1977	-12.2 C (10.0 F)
1978	-12.2 C (10.0 F)
1979	-7.8 C (18.0 F)
1980	-8.3 C (17.1 F)
1981	-6.5 C (20.3 F)
1982	-12.5 C (9.5 F)
1983	-7.5 C (18.5 F)

Wettest day (Rx1day)

The wettest day of the year at Tlell, 1950 to 1983. The record is 50.3 mm (2.0 in) in 1951, marked on the chart; the median year is 34.6 mm (1.4 in).

Wettest day (Rx1day) at Tlell by year
Year	Wettest day (Rx1day)
1950	33.5 mm (1.3 in)
1951	50.3 mm (2.0 in)
1952	39.6 mm (1.6 in)
1953	33.8 mm (1.3 in)
1954	35.8 mm (1.4 in)
1955	28.2 mm (1.1 in)
1956	26.2 mm (1.0 in)
1957	29.0 mm (1.1 in)
1958	41.9 mm (1.6 in)
1959	41.4 mm (1.6 in)
1960	40.4 mm (1.6 in)
1961	36.1 mm (1.4 in)
1962	41.1 mm (1.6 in)
1963	39.1 mm (1.5 in)
1964	32.8 mm (1.3 in)
1965	50.0 mm (2.0 in)
1966	28.7 mm (1.1 in)
1967	33.3 mm (1.3 in)
1968	42.4 mm (1.7 in)
1969	35.3 mm (1.4 in)
1970	32.5 mm (1.3 in)
1971	32.8 mm (1.3 in)
1972	22.9 mm (0.9 in)
1973	27.2 mm (1.1 in)
1974	39.6 mm (1.6 in)
1975	30.2 mm (1.2 in)
1976	32.8 mm (1.3 in)
1977	27.9 mm (1.1 in)
1978	43.9 mm (1.7 in)
1979	38.6 mm (1.5 in)
1980	32.0 mm (1.3 in)
1981	41.2 mm (1.6 in)
1982	27.4 mm (1.1 in)
1983	46.8 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tlell, 1950 to 1983. The record is 118.1 mm (4.6 in) in 1978, marked on the chart; the median year is 74.7 mm (2.9 in).

Wettest five days (Rx5day) at Tlell by year
Year	Wettest five days (Rx5day)
1950	70.3 mm (2.8 in)
1951	80.5 mm (3.2 in)
1952	83.8 mm (3.3 in)
1953	60.5 mm (2.4 in)
1954	75.9 mm (3.0 in)
1955	61.7 mm (2.4 in)
1956	55.1 mm (2.2 in)
1957	72.8 mm (2.9 in)
1958	108.5 mm (4.3 in)
1959	78.3 mm (3.1 in)
1960	83.2 mm (3.3 in)
1961	65.6 mm (2.6 in)
1962	66.4 mm (2.6 in)
1963	77.9 mm (3.1 in)
1964	79.8 mm (3.1 in)
1965	73.8 mm (2.9 in)
1966	65.4 mm (2.6 in)
1967	83.1 mm (3.3 in)
1968	81.0 mm (3.2 in)
1969	102.9 mm (4.1 in)
1970	57.0 mm (2.2 in)
1971	63.6 mm (2.5 in)
1972	70.2 mm (2.8 in)
1973	57.8 mm (2.3 in)
1974	88.6 mm (3.5 in)
1975	91.7 mm (3.6 in)
1976	75.6 mm (3.0 in)
1977	62.5 mm (2.5 in)
1978	118.1 mm (4.6 in)
1979	71.8 mm (2.8 in)
1980	70.9 mm (2.8 in)
1981	85.3 mm (3.4 in)
1982	56.3 mm (2.2 in)
1983	76.1 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tlell, 1950 to 1983. The record is 44 days in 1952, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Tlell by year
Year	Longest dry spell (CDD)
1950	15 days
1951	16 days
1952	44 days
1953	19 days
1954	24 days
1955	10 days
1956	10 days
1957	13 days
1958	37 days
1959	13 days
1960	18 days
1961	15 days
1962	21 days
1963	15 days
1964	14 days
1965	18 days
1966	18 days
1967	20 days
1968	15 days
1969	16 days
1970	17 days
1971	14 days
1972	12 days
1973	12 days
1974	11 days
1975	12 days
1976	10 days
1977	20 days
1978	12 days
1979	19 days
1980	15 days
1981	16 days
1982	19 days
1983	11 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

24 years with a frost

Across 24 years with a frost, the median last spring frost at Tlell falls on 6 May and the median first autumn frost on 28 October, which leaves a median of 182 days between them.

Frost dates and growing season at Tlell
Measure	Median, all years	Earliest period	Recent period (1958 to 1983)	Recent against earliest	Fitted trend
Last spring frost	6 May	n/a	6 May	n/a	n/a
First autumn frost	28 October	n/a	28 October	n/a	n/a
Growing days	182 days	n/a	182 days	n/a	n/a

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.

Rainfall Return Levels

33 years, 1950 to 1983

A day with at least 34.9 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 54.5 mm (2.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Tlell: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	34.9 mm (1.4 in)
5 years	41.3 mm (1.6 in)
10 years	45.0 mm (1.8 in)
25 years	49.2 mm (1.9 in)
50 years	52.0 mm (2.0 in)	Longer than the 33 years of record
100 years	54.5 mm (2.1 in)	Longer than the 33 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, 33 years of values from 1950 to 1983.

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: 50.3 mm (2.0 in) in 1951; 50.0 mm (2.0 in) in 1965; 46.8 mm (1.8 in) in 1983.

Download the Data

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