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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.