Record envelope, standing records and threshold days for Tranquille (CA001168220), British Columbia, Canada, with 46 years of record.
Key Facts for Tranquille
Tranquille (CA001168220) is a weather station in British Columbia, Canada at 50.72 latitude and -120.52 longitude, 360 m (1,181 ft) above sea level.
The station reports from 1908 to 1953, 46 years of record.
1,464 records set at Tranquille still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Tranquille tied a daily record low minimum temperature of 8.9 C (48.0 F) on 24 July 1953.
About the Station
Location: British Columbia, Canada, 50.72 latitude, -120.52 longitude.
Elevation: 360 m (1,181 ft).
Period of record: 1908 to 1953, 46 years.
Eligible elements: tmax, tmin, 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 Tranquille. 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 Tranquille, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Feb
18.3 C (64.9 F)
-31.1 C (-24.0 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-11.1 C (12.0 F)
n/a
n/a
May
33.9 C (93.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
38.3 C (100.9 F)
2.2 C (36.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
3.9 C (39.0 F)
n/a
n/a
Aug
36.1 C (97.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-7.2 C (19.0 F)
n/a
n/a
Oct
27.2 C (81.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tranquille still stand. 1950 holds the most, with 73.
Standing records at Tranquille by the year they were set
Year set
Standing records
1908
32
1909
64
1910
50
1911
45
1912
38
1913
30
1914
41
1915
16
1916
34
1917
37
1918
41
1919
59
1920
10
1921
35
1922
24
1923
16
1924
45
1925
24
1926
29
1927
21
1928
18
1929
24
1930
31
1931
37
1932
44
1933
23
1934
32
1935
34
1936
46
1937
19
1938
27
1939
62
1940
23
1941
43
1942
2
1943
35
1944
21
1945
21
1946
7
1947
6
1948
15
1949
42
1950
73
1951
35
1952
42
1953
11
All-Time Record Progression
1 new records
1 all-time records were set at Tranquille between 17 July 1941 and 17 July 1941. Each dot is a new record.
When Tranquille set new all-time records
Date
Kind
Detail
1941-07-17
Record high maximum temperature
Record high maximum temperature 39.4 C (102.9 F)
Wettest Day of Each Month
Dec: 40.6 mm (1.6 in)
The wettest day on record for each calendar month at Tranquille. The most was 40.6 mm (1.6 in) on 6 December 1936.
Record daily precipitation for each month at Tranquille
Month
Record daily precipitation (mm)
Date
Jan
20.3 mm (0.8 in)
17 January 1929
Feb
20.3 mm (0.8 in)
21 February 1937
Mar
14.0 mm (0.6 in)
4 March 1915
Apr
18.0 mm (0.7 in)
6 April 1950
May
25.9 mm (1.0 in)
8 May 1953
Jun
38.6 mm (1.5 in)
29 June 1917
Jul
19.6 mm (0.8 in)
16 July 1915
Aug
25.9 mm (1.0 in)
15 August 1948
Sep
21.8 mm (0.9 in)
30 September 1909
Oct
16.5 mm (0.6 in)
17 October 1943
Nov
19.1 mm (0.8 in)
12 November 1911
Dec
40.6 mm (1.6 in)
6 December 1936
Period of Record Coverage
1908 to 1953
Complete yearUnder 90 percent of days
46 years of record at Tranquille, 1908 to 1953. 8 years have data for under 90 percent of days and are left out of rankings: 1908, 1913, 1942, 1944, 1945, 1946, 1947, 1953.
Cooler than the station meanWarmer than the station mean
One stripe for each of 32 complete years at Tranquille, 1912 to 1952. Blue stripes are years cooler than the station's own mean of 8.7 C (47.7 F); red stripes are warmer. The coolest year was 1929, at 7.3 C (45.2 F), and the warmest was 1941, at 10.6 C (51.0 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Tranquille as warming stripes, 1912 to 1952
Year
Annual mean temperature
Difference from the station mean
1912
8.2 C
-0.54 C
1914
9.0 C
+0.29 C
1915
9.9 C
+1.16 C
1917
7.8 C
-0.92 C
1919
7.4 C
-1.35 C
1921
8.9 C
+0.18 C
1922
7.9 C
-0.87 C
1923
9.0 C
+0.32 C
1924
9.0 C
+0.26 C
1925
9.5 C
+0.80 C
1926
9.8 C
+1.07 C
1927
7.5 C
-1.23 C
1928
8.9 C
+0.16 C
1929
7.3 C
-1.38 C
1930
8.3 C
-0.43 C
1931
9.4 C
+0.71 C
1932
8.6 C
-0.16 C
1933
8.3 C
-0.46 C
1934
10.0 C
+1.30 C
1935
8.4 C
-0.28 C
1936
8.0 C
-0.75 C
1937
7.6 C
-1.08 C
1938
10.0 C
+1.23 C
1939
10.3 C
+1.61 C
1940
10.5 C
+1.81 C
1941
10.6 C
+1.84 C
1943
8.2 C
-0.54 C
1948
8.3 C
-0.42 C
1949
8.0 C
-0.71 C
1950
7.8 C
-0.92 C
1951
7.9 C
-0.83 C
1952
9.0 C
+0.23 C
The fitted trend in annual mean temperature here over 1912 to 1952 is 0.02 C (-0.30 to 0.33) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.54 to 0.60) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Tranquille
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.30 to 0.33) per decade
0.03 F (-0.54 to 0.60) per decade
1912 to 1952
32
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.4 to 0.2) per decade
-0.1 F (-0.7 to 0.4) per decade
1912 to 1952
32
Not clearly different from zero
Mean daily minimum
0.1 C (-0.2 to 0.5) per decade
0.2 F (-0.4 to 0.8) per decade
1912 to 1952
32
Not clearly different from zero
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
1908 to 1953
Yearly extremes at Tranquille: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1941
35.3 C (95.5 F)
46
Coldest night (TNn)
-36.1 C (-33.0 F)
1909
-25.6 C (-14.1 F)
46
Wettest day (Rx1day)
40.6 mm (1.6 in)
1936
16.5 mm (0.6 in)
46
Wettest five days (Rx5day)
54.9 mm (2.2 in)
1936
26.7 mm (1.1 in)
46
Longest dry spell (CDD)
63 days
1952
38 days
46
Hottest day (TXx)
The hottest day of the year at Tranquille, 1908 to 1953. The record is 39.4 C (102.9 F) in 1941, marked on the chart; the median year is 35.3 C (95.5 F).
Hottest day (TXx) at Tranquille by year
Year
Hottest day (TXx)
1908
28.3 C (82.9 F)
1909
33.9 C (93.0 F)
1910
35.0 C (95.0 F)
1911
37.8 C (100.0 F)
1912
38.3 C (100.9 F)
1913
37.2 C (99.0 F)
1914
37.8 C (100.0 F)
1915
32.8 C (91.0 F)
1916
32.8 C (91.0 F)
1917
35.0 C (95.0 F)
1918
37.8 C (100.0 F)
1919
33.9 C (93.0 F)
1920
33.9 C (93.0 F)
1921
32.8 C (91.0 F)
1922
33.3 C (91.9 F)
1923
34.4 C (93.9 F)
1924
35.6 C (96.1 F)
1925
36.7 C (98.1 F)
1926
37.8 C (100.0 F)
1927
35.6 C (96.1 F)
1928
36.1 C (97.0 F)
1929
33.3 C (91.9 F)
1930
35.6 C (96.1 F)
1931
36.7 C (98.1 F)
1932
35.0 C (95.0 F)
1933
33.9 C (93.0 F)
1934
35.0 C (95.0 F)
1935
33.9 C (93.0 F)
1936
34.4 C (93.9 F)
1937
35.6 C (96.1 F)
1938
35.6 C (96.1 F)
1939
37.8 C (100.0 F)
1940
35.0 C (95.0 F)
1941
39.4 C (102.9 F)
1942
27.2 C (81.0 F)
1943
32.8 C (91.0 F)
1944
38.3 C (100.9 F)
1945
35.0 C (95.0 F)
1946
35.6 C (96.1 F)
1947
27.2 C (81.0 F)
1948
33.3 C (91.9 F)
1949
36.1 C (97.0 F)
1950
36.1 C (97.0 F)
1951
37.2 C (99.0 F)
1952
36.1 C (97.0 F)
1953
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at Tranquille, 1908 to 1953. The record is -36.1 C (-33.0 F) in 1909, marked on the chart; the median year is -25.6 C (-14.1 F).
Coldest night (TNn) at Tranquille by year
Year
Coldest night (TNn)
1908
-20.6 C (-5.1 F)
1909
-36.1 C (-33.0 F)
1910
-23.3 C (-9.9 F)
1911
-24.4 C (-11.9 F)
1912
-26.1 C (-15.0 F)
1913
-31.1 C (-24.0 F)
1914
-26.7 C (-16.1 F)
1915
-17.2 C (1.0 F)
1916
-31.7 C (-25.1 F)
1917
-31.7 C (-25.1 F)
1918
-24.4 C (-11.9 F)
1919
-27.8 C (-18.0 F)
1920
-20.6 C (-5.1 F)
1921
-25.6 C (-14.1 F)
1922
-26.7 C (-16.1 F)
1923
-26.1 C (-15.0 F)
1924
-27.8 C (-18.0 F)
1925
-16.7 C (1.9 F)
1926
-20.6 C (-5.1 F)
1927
-32.2 C (-26.0 F)
1928
-25.6 C (-14.1 F)
1929
-32.8 C (-27.0 F)
1930
-26.7 C (-16.1 F)
1931
-18.9 C (-2.0 F)
1932
-26.7 C (-16.1 F)
1933
-24.4 C (-11.9 F)
1934
-20.6 C (-5.1 F)
1935
-31.7 C (-25.1 F)
1936
-30.0 C (-22.0 F)
1937
-29.4 C (-20.9 F)
1938
-17.8 C (0.0 F)
1939
-26.1 C (-15.0 F)
1940
-15.6 C (3.9 F)
1941
-16.7 C (1.9 F)
1942
-16.1 C (3.0 F)
1943
-30.0 C (-22.0 F)
1944
-15.0 C (5.0 F)
1945
-13.9 C (7.0 F)
1946
-8.3 C (17.1 F)
1947
-11.1 C (12.0 F)
1948
-20.6 C (-5.1 F)
1949
-25.6 C (-14.1 F)
1950
-35.6 C (-32.1 F)
1951
-30.6 C (-23.1 F)
1952
-30.0 C (-22.0 F)
1953
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at Tranquille, 1908 to 1953. The record is 40.6 mm (1.6 in) in 1936, marked on the chart; the median year is 16.5 mm (0.6 in).
Wettest day (Rx1day) at Tranquille by year
Year
Wettest day (Rx1day)
1908
10.2 mm (0.4 in)
1909
21.8 mm (0.9 in)
1910
17.8 mm (0.7 in)
1911
19.1 mm (0.8 in)
1912
13.2 mm (0.5 in)
1913
12.7 mm (0.5 in)
1914
18.3 mm (0.7 in)
1915
27.2 mm (1.1 in)
1916
15.0 mm (0.6 in)
1917
38.6 mm (1.5 in)
1918
11.4 mm (0.4 in)
1919
15.2 mm (0.6 in)
1920
14.7 mm (0.6 in)
1921
19.1 mm (0.8 in)
1922
16.5 mm (0.6 in)
1923
13.7 mm (0.5 in)
1924
25.4 mm (1.0 in)
1925
18.5 mm (0.7 in)
1926
10.2 mm (0.4 in)
1927
21.6 mm (0.9 in)
1928
12.2 mm (0.5 in)
1929
23.6 mm (0.9 in)
1930
21.8 mm (0.9 in)
1931
15.2 mm (0.6 in)
1932
12.7 mm (0.5 in)
1933
22.9 mm (0.9 in)
1934
16.5 mm (0.6 in)
1935
16.3 mm (0.6 in)
1936
40.6 mm (1.6 in)
1937
20.3 mm (0.8 in)
1938
24.1 mm (0.9 in)
1939
15.2 mm (0.6 in)
1940
14.7 mm (0.6 in)
1941
17.8 mm (0.7 in)
1942
12.7 mm (0.5 in)
1943
16.5 mm (0.6 in)
1944
11.9 mm (0.5 in)
1945
16.5 mm (0.6 in)
1946
20.3 mm (0.8 in)
1947
7.9 mm (0.31 in)
1948
25.9 mm (1.0 in)
1949
14.7 mm (0.6 in)
1950
18.0 mm (0.7 in)
1951
15.2 mm (0.6 in)
1952
14.0 mm (0.6 in)
1953
25.9 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tranquille, 1908 to 1953. The record is 54.9 mm (2.2 in) in 1936, marked on the chart; the median year is 26.7 mm (1.1 in).
Wettest five days (Rx5day) at Tranquille by year
Year
Wettest five days (Rx5day)
1908
11.5 mm (0.5 in)
1909
30.2 mm (1.2 in)
1910
17.8 mm (0.7 in)
1911
26.7 mm (1.1 in)
1912
29.4 mm (1.2 in)
1913
21.1 mm (0.8 in)
1914
38.1 mm (1.5 in)
1915
38.4 mm (1.5 in)
1916
39.4 mm (1.6 in)
1917
40.4 mm (1.6 in)
1918
11.4 mm (0.4 in)
1919
30.4 mm (1.2 in)
1920
19.9 mm (0.8 in)
1921
19.1 mm (0.8 in)
1922
26.6 mm (1.0 in)
1923
24.4 mm (1.0 in)
1924
31.7 mm (1.2 in)
1925
29.2 mm (1.1 in)
1926
17.1 mm (0.7 in)
1927
41.1 mm (1.6 in)
1928
23.0 mm (0.9 in)
1929
34.3 mm (1.4 in)
1930
21.8 mm (0.9 in)
1931
16.8 mm (0.7 in)
1932
22.4 mm (0.9 in)
1933
33.2 mm (1.3 in)
1934
21.1 mm (0.8 in)
1935
28.2 mm (1.1 in)
1936
54.9 mm (2.2 in)
1937
44.0 mm (1.7 in)
1938
50.8 mm (2.0 in)
1939
41.6 mm (1.6 in)
1940
22.6 mm (0.9 in)
1941
26.9 mm (1.1 in)
1942
15.2 mm (0.6 in)
1943
19.3 mm (0.8 in)
1944
27.4 mm (1.1 in)
1945
36.6 mm (1.4 in)
1946
29.0 mm (1.1 in)
1947
8.9 mm (0.35 in)
1948
34.5 mm (1.4 in)
1949
22.9 mm (0.9 in)
1950
25.6 mm (1.0 in)
1951
26.7 mm (1.1 in)
1952
25.5 mm (1.0 in)
1953
26.7 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tranquille, 1908 to 1953. The record is 63 days in 1952, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Tranquille by year
Year
Longest dry spell (CDD)
1908
48 days
1909
39 days
1910
51 days
1911
42 days
1912
40 days
1913
25 days
1914
32 days
1915
33 days
1916
38 days
1917
55 days
1918
32 days
1919
41 days
1920
27 days
1921
45 days
1922
41 days
1923
31 days
1924
58 days
1925
27 days
1926
25 days
1927
20 days
1928
46 days
1929
43 days
1930
31 days
1931
38 days
1932
38 days
1933
38 days
1934
30 days
1935
47 days
1936
24 days
1937
30 days
1938
36 days
1939
37 days
1940
40 days
1941
43 days
1942
25 days
1943
55 days
1944
53 days
1945
35 days
1946
37 days
1947
18 days
1948
27 days
1949
42 days
1950
32 days
1951
43 days
1952
63 days
1953
28 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
32 years with a frost
Across 32 years with a frost, the median last spring frost at Tranquille falls on 16 April and the median first autumn frost on 14 October, which leaves a median of 182 days between them.
Fitted over all years, the growing season changes by +0.3 days per decade at this station.
Frost dates and growing season at Tranquille
Measure
Median, all years
Earliest period
Recent period (1915 to 1952)
Recent against earliest
Fitted trend
Last spring frost
16 April
n/a
16 April
n/a
+1.1 days per decade
First autumn frost
14 October
n/a
14 October
n/a
+1.4 days per decade
Growing days
182 days
n/a
182 days
n/a
+0.3 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.
Rainfall Return Levels
34 years, 1909 to 1952
A day with at least 17.5 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 46.3 mm (1.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Tranquille: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
17.5 mm (0.7 in)
5 years
22.7 mm (0.9 in)
10 years
27.0 mm (1.1 in)
25 years
33.6 mm (1.3 in)
50 years
39.4 mm (1.6 in)
Longer than the 34 years of record
100 years
46.3 mm (1.8 in)
Longer than the 34 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, 34 years of values from 1909 to 1952.
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: 40.6 mm (1.6 in) in 1936; 38.6 mm (1.5 in) in 1917; 27.2 mm (1.1 in) in 1915.
Download the Data
Data for Tranquille standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tranquille 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.