Record envelope, standing records and threshold days for Tappen (CA001167980), British Columbia, Canada, with 49 years of record.
Key Facts for Tappen
Tappen (CA001167980) is a weather station in British Columbia, Canada at 50.75 latitude and -119.33 longitude, 442 m (1,450 ft) above sea level.
The station reports from 1913 to 1961, 49 years of record.
1,464 records set at Tappen still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Tappen set a daily record high maximum temperature of 7.2 C (45.0 F) on 24 December 1961.
About the Station
Location: British Columbia, Canada, 50.75 latitude, -119.33 longitude.
Elevation: 442 m (1,450 ft).
Period of record: 1913 to 1961, 49 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 Tappen. 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 Tappen, 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)
-33.3 C (-27.9 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
20.6 C (69.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-11.1 C (12.0 F)
n/a
n/a
May
35.0 C (95.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
39.4 C (102.9 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
27.2 C (81.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
16.7 C (62.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
12.8 C (55.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tappen still stand. 1924 holds the most, with 90.
Standing records at Tappen by the year they were set
Year set
Standing records
1913
46
1914
37
1915
39
1916
37
1917
32
1918
35
1919
56
1920
22
1921
33
1922
30
1923
34
1924
90
1925
38
1926
28
1927
26
1928
18
1929
14
1930
27
1931
30
1932
29
1933
17
1934
30
1935
24
1936
46
1937
18
1938
28
1939
35
1940
28
1941
35
1942
17
1943
25
1944
36
1945
17
1946
19
1947
16
1950
21
1951
34
1952
23
1953
31
1954
42
1955
51
1956
30
1957
33
1958
26
1959
30
1960
27
1961
24
All-Time Record Progression
4 new records
4 all-time records were set at Tappen between 17 December 1951 and 25 January 1957. Each dot is a new record.
When Tappen set new all-time records
Date
Kind
Detail
1951-12-17
Record daily snowfall
Record daily snowfall 38.9 cm (15.3 in)
1956-12-08
Record daily precipitation
Record daily precipitation 40.6 mm (1.6 in)
1956-12-08
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
1957-01-25
Record low maximum temperature
Record low maximum temperature -22.2 C (-8.0 F)
Wettest Day of Each Month
Dec: 40.6 mm (1.6 in)
The wettest day on record for each calendar month at Tappen. The most was 40.6 mm (1.6 in) on 8 December 1956.
Record daily precipitation for each month at Tappen
Month
Record daily precipitation (mm)
Date
Jan
33.0 mm (1.3 in)
21 January 1935
Feb
30.5 mm (1.2 in)
6 February 1953
Mar
26.7 mm (1.1 in)
12 March 1951
Apr
17.0 mm (0.7 in)
27 April 1922
May
33.0 mm (1.3 in)
11 May 1960
Jun
30.2 mm (1.2 in)
15 June 1928
Jul
38.9 mm (1.5 in)
11 July 1942
Aug
32.5 mm (1.3 in)
7 August 1917
Sep
25.4 mm (1.0 in)
14 September 1959
Oct
28.7 mm (1.1 in)
25 October 1945
Nov
26.2 mm (1.0 in)
23 November 1923
Dec
40.6 mm (1.6 in)
8 December 1956
Period of Record Coverage
1913 to 1961
Complete yearUnder 90 percent of days
47 years of record at Tappen, 1913 to 1961. 2 years have data for under 90 percent of days and are left out of rankings: 1920, 1950.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Tappen, 1913 to 1960. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1955, at 5.7 C (42.3 F), and the warmest was 1940, at 9.7 C (49.5 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Tappen as warming stripes, 1913 to 1960
Year
Annual mean temperature
Difference from the station mean
1913
7.6 C
-0.36 C
1914
9.3 C
+1.41 C
1915
9.4 C
+1.50 C
1916
6.4 C
-1.57 C
1917
7.8 C
-0.17 C
1919
8.3 C
+0.38 C
1921
6.8 C
-1.15 C
1922
6.2 C
-1.68 C
1923
7.4 C
-0.54 C
1924
7.1 C
-0.79 C
1925
8.5 C
+0.62 C
1926
8.5 C
+0.56 C
1927
7.3 C
-0.62 C
1928
9.0 C
+1.03 C
1929
7.6 C
-0.37 C
1930
7.7 C
-0.20 C
1931
9.0 C
+1.12 C
1932
7.9 C
+0.02 C
1933
8.0 C
+0.10 C
1934
9.1 C
+1.18 C
1935
7.5 C
-0.44 C
1936
7.8 C
-0.15 C
1937
7.4 C
-0.51 C
1938
9.3 C
+1.33 C
1939
9.2 C
+1.23 C
1940
9.7 C
+1.82 C
1941
9.6 C
+1.68 C
1942
8.9 C
+0.95 C
1943
7.8 C
-0.09 C
1944
8.7 C
+0.79 C
1945
8.5 C
+0.61 C
1946
8.3 C
+0.39 C
1947
8.6 C
+0.64 C
1951
6.1 C
-1.82 C
1952
7.0 C
-0.95 C
1953
8.1 C
+0.14 C
1954
6.8 C
-1.12 C
1955
5.7 C
-2.18 C
1956
6.4 C
-1.56 C
1958
8.8 C
+0.92 C
1959
6.8 C
-1.14 C
1960
7.1 C
-0.81 C
The fitted trend in annual mean temperature here over 1913 to 1960 is -0.1 C (-0.4 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.7 to 0.2) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Tappen
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.4 to 0.1) per decade
-0.2 F (-0.7 to 0.2) per decade
1913 to 1960
42
Not clearly different from zero
Mean daily maximum
-0.4 C (-0.7 to -0.2) per decade
-0.8 F (-1.2 to -0.3) per decade
1913 to 1960
42
Fall
Mean daily minimum
0.2 C (-0.1 to 0.5) per decade
0.3 F (-0.2 to 0.8) per decade
1913 to 1960
42
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
1913 to 1961
Yearly extremes at Tappen: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1919
36.1 C (97.0 F)
47
Coldest night (TNn)
-33.3 C (-27.9 F)
1935
-24.4 C (-11.9 F)
47
Wettest day (Rx1day)
40.6 mm (1.6 in)
1956
24.4 mm (1.0 in)
47
Wettest five days (Rx5day)
62.7 mm (2.5 in)
1935
43.7 mm (1.7 in)
47
Longest dry spell (CDD)
47 days
1930
22 days
47
Hottest day (TXx)
The hottest day of the year at Tappen, 1913 to 1961. The record is 41.1 C (106.0 F) in 1919, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Tappen by year
Year
Hottest day (TXx)
1913
38.3 C (100.9 F)
1914
38.9 C (102.0 F)
1915
35.0 C (95.0 F)
1916
36.1 C (97.0 F)
1917
38.3 C (100.9 F)
1918
39.4 C (102.9 F)
1919
41.1 C (106.0 F)
1920
37.2 C (99.0 F)
1921
34.4 C (93.9 F)
1922
35.6 C (96.1 F)
1923
33.9 C (93.0 F)
1924
41.1 C (106.0 F)
1925
39.4 C (102.9 F)
1926
38.9 C (102.0 F)
1927
37.8 C (100.0 F)
1928
36.1 C (97.0 F)
1929
36.1 C (97.0 F)
1930
38.3 C (100.9 F)
1931
37.8 C (100.0 F)
1932
35.6 C (96.1 F)
1933
36.1 C (97.0 F)
1934
38.3 C (100.9 F)
1935
32.8 C (91.0 F)
1936
35.6 C (96.1 F)
1937
33.9 C (93.0 F)
1938
38.3 C (100.9 F)
1939
37.8 C (100.0 F)
1940
36.7 C (98.1 F)
1941
41.1 C (106.0 F)
1942
36.7 C (98.1 F)
1943
35.0 C (95.0 F)
1944
40.0 C (104.0 F)
1945
37.2 C (99.0 F)
1946
34.4 C (93.9 F)
1947
35.6 C (96.1 F)
1950
35.6 C (96.1 F)
1951
33.9 C (93.0 F)
1952
33.9 C (93.0 F)
1953
32.8 C (91.0 F)
1954
29.4 C (84.9 F)
1955
32.8 C (91.0 F)
1956
35.0 C (95.0 F)
1957
30.6 C (87.1 F)
1958
35.0 C (95.0 F)
1959
34.4 C (93.9 F)
1960
35.6 C (96.1 F)
1961
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Tappen, 1913 to 1961. The record is -33.3 C (-27.9 F) in 1935, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Tappen by year
Year
Coldest night (TNn)
1913
-24.4 C (-11.9 F)
1914
-22.2 C (-8.0 F)
1915
-18.9 C (-2.0 F)
1916
-30.6 C (-23.1 F)
1917
-28.9 C (-20.0 F)
1918
-23.3 C (-9.9 F)
1919
-24.4 C (-11.9 F)
1920
-20.0 C (-4.0 F)
1921
-25.6 C (-14.1 F)
1922
-26.1 C (-15.0 F)
1923
-27.8 C (-18.0 F)
1924
-30.0 C (-22.0 F)
1925
-20.0 C (-4.0 F)
1926
-21.1 C (-6.0 F)
1927
-28.9 C (-20.0 F)
1928
-20.6 C (-5.1 F)
1929
-27.8 C (-18.0 F)
1930
-25.0 C (-13.0 F)
1931
-16.7 C (1.9 F)
1932
-27.2 C (-17.0 F)
1933
-25.6 C (-14.1 F)
1934
-22.8 C (-9.0 F)
1935
-33.3 C (-27.9 F)
1936
-32.2 C (-26.0 F)
1937
-23.9 C (-11.0 F)
1938
-17.8 C (0.0 F)
1939
-23.3 C (-9.9 F)
1940
-16.7 C (1.9 F)
1941
-16.1 C (3.0 F)
1942
-16.7 C (1.9 F)
1943
-31.1 C (-24.0 F)
1944
-17.8 C (0.0 F)
1945
-16.1 C (3.0 F)
1946
-18.3 C (-0.9 F)
1947
-28.3 C (-18.9 F)
1950
-14.4 C (6.1 F)
1951
-27.8 C (-18.0 F)
1952
-30.0 C (-22.0 F)
1953
-16.1 C (3.0 F)
1954
-27.8 C (-18.0 F)
1955
-25.0 C (-13.0 F)
1956
-27.2 C (-17.0 F)
1957
-32.8 C (-27.0 F)
1958
-15.0 C (5.0 F)
1959
-25.0 C (-13.0 F)
1960
-22.2 C (-8.0 F)
1961
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Tappen, 1913 to 1961. The record is 40.6 mm (1.6 in) in 1956, marked on the chart; the median year is 24.4 mm (1.0 in).
Wettest day (Rx1day) at Tappen by year
Year
Wettest day (Rx1day)
1913
18.0 mm (0.7 in)
1914
17.5 mm (0.7 in)
1915
27.4 mm (1.1 in)
1916
28.2 mm (1.1 in)
1917
32.5 mm (1.3 in)
1918
19.1 mm (0.8 in)
1919
19.1 mm (0.8 in)
1920
19.1 mm (0.8 in)
1921
19.1 mm (0.8 in)
1922
20.3 mm (0.8 in)
1923
26.9 mm (1.1 in)
1924
25.4 mm (1.0 in)
1925
19.3 mm (0.8 in)
1926
22.9 mm (0.9 in)
1927
26.2 mm (1.0 in)
1928
30.2 mm (1.2 in)
1929
26.9 mm (1.1 in)
1930
23.9 mm (0.9 in)
1931
24.9 mm (1.0 in)
1932
18.3 mm (0.7 in)
1933
22.4 mm (0.9 in)
1934
19.8 mm (0.8 in)
1935
37.6 mm (1.5 in)
1936
30.0 mm (1.2 in)
1937
30.0 mm (1.2 in)
1938
31.8 mm (1.3 in)
1939
20.1 mm (0.8 in)
1940
24.4 mm (1.0 in)
1941
17.5 mm (0.7 in)
1942
38.9 mm (1.5 in)
1943
25.4 mm (1.0 in)
1944
18.5 mm (0.7 in)
1945
28.7 mm (1.1 in)
1946
25.1 mm (1.0 in)
1947
23.9 mm (0.9 in)
1950
13.5 mm (0.5 in)
1951
38.9 mm (1.5 in)
1952
19.8 mm (0.8 in)
1953
30.5 mm (1.2 in)
1954
27.7 mm (1.1 in)
1955
17.8 mm (0.7 in)
1956
40.6 mm (1.6 in)
1957
22.4 mm (0.9 in)
1958
16.5 mm (0.6 in)
1959
25.4 mm (1.0 in)
1960
33.0 mm (1.3 in)
1961
15.2 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tappen, 1913 to 1961. The record is 62.7 mm (2.5 in) in 1935, marked on the chart; the median year is 43.7 mm (1.7 in).
Wettest five days (Rx5day) at Tappen by year
Year
Wettest five days (Rx5day)
1913
35.1 mm (1.4 in)
1914
39.2 mm (1.5 in)
1915
43.7 mm (1.7 in)
1916
38.9 mm (1.5 in)
1917
51.6 mm (2.0 in)
1918
49.8 mm (2.0 in)
1919
35.6 mm (1.4 in)
1920
52.6 mm (2.1 in)
1921
38.1 mm (1.5 in)
1922
50.3 mm (2.0 in)
1923
49.5 mm (1.9 in)
1924
48.2 mm (1.9 in)
1925
50.8 mm (2.0 in)
1926
35.3 mm (1.4 in)
1927
40.7 mm (1.6 in)
1928
43.0 mm (1.7 in)
1929
33.1 mm (1.3 in)
1930
41.4 mm (1.6 in)
1931
45.5 mm (1.8 in)
1932
41.1 mm (1.6 in)
1933
48.0 mm (1.9 in)
1934
47.4 mm (1.9 in)
1935
62.7 mm (2.5 in)
1936
48.8 mm (1.9 in)
1937
47.1 mm (1.9 in)
1938
58.0 mm (2.3 in)
1939
41.2 mm (1.6 in)
1940
43.5 mm (1.7 in)
1941
44.9 mm (1.8 in)
1942
60.3 mm (2.4 in)
1943
51.0 mm (2.0 in)
1944
36.8 mm (1.4 in)
1945
46.8 mm (1.8 in)
1946
39.6 mm (1.6 in)
1947
48.3 mm (1.9 in)
1950
35.3 mm (1.4 in)
1951
56.0 mm (2.2 in)
1952
32.6 mm (1.3 in)
1953
41.2 mm (1.6 in)
1954
60.7 mm (2.4 in)
1955
38.4 mm (1.5 in)
1956
40.6 mm (1.6 in)
1957
43.2 mm (1.7 in)
1958
41.7 mm (1.6 in)
1959
52.6 mm (2.1 in)
1960
44.2 mm (1.7 in)
1961
24.1 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tappen, 1913 to 1961. The record is 47 days in 1930, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Tappen by year
Year
Longest dry spell (CDD)
1913
26 days
1914
22 days
1915
15 days
1916
19 days
1917
20 days
1918
33 days
1919
18 days
1920
25 days
1921
18 days
1922
18 days
1923
26 days
1924
32 days
1925
26 days
1926
28 days
1927
16 days
1928
23 days
1929
23 days
1930
47 days
1931
23 days
1932
15 days
1933
16 days
1934
20 days
1935
13 days
1936
33 days
1937
19 days
1938
30 days
1939
36 days
1940
34 days
1941
15 days
1942
22 days
1943
29 days
1944
19 days
1945
15 days
1946
21 days
1947
14 days
1950
41 days
1951
29 days
1952
29 days
1953
14 days
1954
20 days
1955
21 days
1956
24 days
1957
24 days
1958
21 days
1959
19 days
1960
30 days
1961
17 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Tappen falls on 12 May and the median first autumn frost on 26 September, which leaves a median of 141 days between them.
Fitted over all years, the growing season changes by +0.5 days per decade at this station.
Frost dates and growing season at Tappen
Measure
Median, all years
Earliest period
Recent period (1927 to 1960)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
9 May
n/a
+0.5 days per decade
First autumn frost
26 September
n/a
27 September
n/a
+1.0 days per decade
Growing days
141 days
n/a
145 days
n/a
+0.5 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
43 years, 1913 to 1959
A day with at least 24.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 45.7 mm (1.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Tappen: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
24.0 mm (0.9 in)
5 years
29.8 mm (1.2 in)
10 years
33.7 mm (1.3 in)
25 years
38.5 mm (1.5 in)
50 years
42.1 mm (1.7 in)
Longer than the 43 years of record
100 years
45.7 mm (1.8 in)
Longer than the 43 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, 43 years of values from 1913 to 1959.
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 1956; 38.9 mm (1.5 in) in 1942; 38.9 mm (1.5 in) in 1951.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of Tappen, at 1921, 1927 and 1951. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1921 ran 1.4 C (2.6 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1927 ran 0.9 C (1.7 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1951 ran 1.1 C (1.9 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Tappen, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1921
-1.4
-2.6
possible
5
1927
+0.9
+1.7
likely
5
1951
-1.1
-1.9
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Tappen standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tappen 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.