Record envelope, standing records and threshold days for Smithers A (CA001077500), British Columbia, Canada, with 77 years of record.
Key Facts for Smithers A
Smithers A (CA001077500) is a weather station in British Columbia, Canada at 54.82 latitude and -127.18 longitude, 522 m (1,713 ft) above sea level.
The station reports from 1942 to 2018, 77 years of record.
1,464 records set at Smithers A still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Smithers A set a daily record low maximum temperature of -21.0 C (-5.8 F) on 23 December 1983.
About the Station
Location: British Columbia, Canada, 54.82 latitude, -127.18 longitude.
Elevation: 522 m (1,713 ft).
Period of record: 1942 to 2018, 77 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 Smithers A. 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 Smithers A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-43.9 C (-47.0 F)
n/a
n/a
Feb
11.7 C (53.1 F)
-35.6 C (-32.1 F)
n/a
n/a
Mar
15.6 C (60.1 F)
-33.3 C (-27.9 F)
n/a
n/a
Apr
24.3 C (75.7 F)
-18.3 C (-0.9 F)
n/a
n/a
May
35.8 C (96.4 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
33.9 C (93.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
34.4 C (93.9 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
34.3 C (93.7 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
30.6 C (87.1 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
22.2 C (72.0 F)
-15.6 C (3.9 F)
n/a
n/a
Nov
15.6 C (60.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
11.5 C (52.7 F)
-36.7 C (-34.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Smithers A still stand. 1950 holds the most, with 69.
Standing records at Smithers A by the year they were set
Year set
Standing records
1942
17
1943
33
1944
21
1945
38
1946
40
1947
47
1948
41
1949
38
1950
69
1951
56
1952
32
1953
22
1954
55
1955
61
1956
34
1957
33
1958
53
1959
41
1960
23
1961
24
1962
36
1963
39
1964
25
1965
36
1966
28
1967
27
1968
29
1969
38
1970
21
1971
30
1972
41
1973
36
1974
16
1975
36
1976
23
1977
28
1978
19
1979
39
1980
48
1981
36
1982
26
1983
29
All-Time Record Progression
2 new records
2 all-time records were set at Smithers A between 31 July 1982 and 30 May 1983. Each dot is a new record.
When Smithers A set new all-time records
Date
Kind
Detail
1982-07-31
Record high minimum temperature
Record high minimum temperature 17.5 C (63.5 F)
1983-05-30
Record high maximum temperature
Record high maximum temperature 35.8 C (96.4 F)
Wettest Day of Each Month
Nov: 59.7 mm (2.4 in)
The wettest day on record for each calendar month at Smithers A. The most was 59.7 mm (2.4 in) on 22 November 1957.
Record daily precipitation for each month at Smithers A
Month
Record daily precipitation (mm)
Date
Jan
31.5 mm (1.2 in)
27 January 1962
Feb
18.0 mm (0.7 in)
22 February 1975
Mar
22.6 mm (0.9 in)
31 March 1981
Apr
24.6 mm (1.0 in)
12 April 1947
May
52.3 mm (2.1 in)
13 May 1948
Jun
29.2 mm (1.1 in)
11 June 1972
Jul
40.1 mm (1.6 in)
16 July 1964
Aug
30.4 mm (1.2 in)
10 August 1978
Sep
31.0 mm (1.2 in)
26 September 1958
Oct
42.7 mm (1.7 in)
26 October 1951
Nov
59.7 mm (2.4 in)
22 November 1957
Dec
29.0 mm (1.1 in)
12 December 1952
Period of Record Coverage
1942 to 1983
Complete yearUnder 90 percent of days
42 years of record at Smithers A, 1942 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1942.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Smithers A, 1943 to 1983. Blue stripes are years cooler than the station's own mean of 3.5 C (38.2 F); red stripes are warmer. The coolest year was 1950, at 1.7 C (35.1 F), and the warmest was 1958, at 5.3 C (41.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Smithers A as warming stripes, 1943 to 1983
Year
Annual mean temperature
Difference from the station mean
1943
4.2 C
+0.70 C
1944
4.5 C
+1.06 C
1946
3.3 C
-0.19 C
1947
3.8 C
+0.31 C
1948
3.1 C
-0.41 C
1949
2.8 C
-0.63 C
1950
1.7 C
-1.74 C
1951
2.3 C
-1.15 C
1952
3.9 C
+0.42 C
1953
4.2 C
+0.73 C
1954
3.4 C
-0.07 C
1955
1.7 C
-1.74 C
1956
2.8 C
-0.68 C
1957
2.9 C
-0.60 C
1958
5.3 C
+1.87 C
1959
3.4 C
-0.07 C
1960
3.6 C
+0.15 C
1961
4.2 C
+0.72 C
1962
3.8 C
+0.37 C
1963
4.7 C
+1.25 C
1964
2.9 C
-0.55 C
1965
3.6 C
+0.17 C
1966
3.2 C
-0.26 C
1967
3.9 C
+0.43 C
1968
2.9 C
-0.56 C
1969
3.6 C
+0.17 C
1970
3.1 C
-0.33 C
1971
2.9 C
-0.58 C
1972
2.5 C
-0.99 C
1973
2.7 C
-0.81 C
1974
3.6 C
+0.14 C
1975
2.8 C
-0.65 C
1976
3.7 C
+0.20 C
1977
3.7 C
+0.25 C
1978
3.8 C
+0.32 C
1980
4.5 C
+1.02 C
1981
5.3 C
+1.78 C
1982
2.7 C
-0.77 C
1983
4.1 C
+0.62 C
The fitted trend in annual mean temperature here over 1943 to 1983 is 0.1 C (-0.2 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.6) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Smithers A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.3) per decade
0.1 F (-0.3 to 0.6) per decade
1943 to 1983
39
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.2) per decade
-0.1 F (-0.5 to 0.3) per decade
1943 to 1983
39
Not clearly different from zero
Mean daily minimum
0.23 C (-0.04 to 0.51) per decade
0.4 F (-0.1 to 0.9) per decade
1943 to 1983
39
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
1942 to 1983
Yearly extremes at Smithers A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.8 C (96.4 F)
1983
31.1 C (88.0 F)
42
Coldest night (TNn)
-43.9 C (-47.0 F)
1950
-32.8 C (-27.0 F)
42
Wettest day (Rx1day)
59.7 mm (2.4 in)
1957
28.0 mm (1.1 in)
42
Wettest five days (Rx5day)
91.4 mm (3.6 in)
1948
48.4 mm (1.9 in)
42
Longest dry spell (CDD)
42 days
1974
24 days
42
Hottest day (TXx)
The hottest day of the year at Smithers A, 1942 to 1983. The record is 35.8 C (96.4 F) in 1983, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Smithers A by year
Year
Hottest day (TXx)
1942
32.2 C (90.0 F)
1943
27.2 C (81.0 F)
1944
30.0 C (86.0 F)
1945
31.1 C (88.0 F)
1946
27.8 C (82.0 F)
1947
31.1 C (88.0 F)
1948
30.6 C (87.1 F)
1949
29.4 C (84.9 F)
1950
33.3 C (91.9 F)
1951
33.3 C (91.9 F)
1952
32.2 C (90.0 F)
1953
30.6 C (87.1 F)
1954
27.2 C (81.0 F)
1955
31.7 C (89.1 F)
1956
31.7 C (89.1 F)
1957
27.8 C (82.0 F)
1958
31.7 C (89.1 F)
1959
27.8 C (82.0 F)
1960
33.9 C (93.0 F)
1961
31.1 C (88.0 F)
1962
31.1 C (88.0 F)
1963
28.9 C (84.0 F)
1964
27.2 C (81.0 F)
1965
33.3 C (91.9 F)
1966
30.0 C (86.0 F)
1967
31.1 C (88.0 F)
1968
31.1 C (88.0 F)
1969
33.9 C (93.0 F)
1970
28.3 C (82.9 F)
1971
34.4 C (93.9 F)
1972
31.1 C (88.0 F)
1973
30.0 C (86.0 F)
1974
31.1 C (88.0 F)
1975
31.1 C (88.0 F)
1976
25.6 C (78.1 F)
1977
33.8 C (92.8 F)
1978
33.5 C (92.3 F)
1979
30.7 C (87.3 F)
1980
28.5 C (83.3 F)
1981
34.3 C (93.7 F)
1982
33.1 C (91.6 F)
1983
35.8 C (96.4 F)
Coldest night (TNn)
The coldest night of the year at Smithers A, 1942 to 1983. The record is -43.9 C (-47.0 F) in 1950, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Smithers A by year
Year
Coldest night (TNn)
1942
-19.4 C (-2.9 F)
1943
-32.2 C (-26.0 F)
1944
-23.3 C (-9.9 F)
1945
-24.4 C (-11.9 F)
1946
-29.4 C (-20.9 F)
1947
-43.3 C (-45.9 F)
1948
-33.9 C (-29.0 F)
1949
-35.6 C (-32.1 F)
1950
-43.9 C (-47.0 F)
1951
-36.7 C (-34.1 F)
1952
-30.6 C (-23.1 F)
1953
-34.4 C (-29.9 F)
1954
-37.8 C (-36.0 F)
1955
-33.3 C (-27.9 F)
1956
-37.8 C (-36.0 F)
1957
-36.1 C (-33.0 F)
1958
-27.2 C (-17.0 F)
1959
-31.1 C (-24.0 F)
1960
-26.7 C (-16.1 F)
1961
-23.9 C (-11.0 F)
1962
-35.6 C (-32.1 F)
1963
-26.7 C (-16.1 F)
1964
-36.7 C (-34.1 F)
1965
-31.1 C (-24.0 F)
1966
-30.0 C (-22.0 F)
1967
-30.6 C (-23.1 F)
1968
-36.7 C (-34.1 F)
1969
-35.6 C (-32.1 F)
1970
-32.8 C (-27.0 F)
1971
-36.1 C (-33.0 F)
1972
-40.0 C (-40.0 F)
1973
-30.0 C (-22.0 F)
1974
-36.1 C (-33.0 F)
1975
-32.8 C (-27.0 F)
1976
-30.6 C (-23.1 F)
1977
-32.7 C (-26.9 F)
1978
-35.8 C (-32.4 F)
1979
-31.4 C (-24.5 F)
1980
-33.1 C (-27.6 F)
1981
-26.6 C (-15.9 F)
1982
-37.3 C (-35.1 F)
1983
-31.4 C (-24.5 F)
Wettest day (Rx1day)
The wettest day of the year at Smithers A, 1942 to 1983. The record is 59.7 mm (2.4 in) in 1957, marked on the chart; the median year is 28.0 mm (1.1 in).
Wettest day (Rx1day) at Smithers A by year
Year
Wettest day (Rx1day)
1942
13.5 mm (0.5 in)
1943
20.6 mm (0.8 in)
1944
25.7 mm (1.0 in)
1945
52.1 mm (2.1 in)
1946
28.4 mm (1.1 in)
1947
30.0 mm (1.2 in)
1948
52.3 mm (2.1 in)
1949
17.5 mm (0.7 in)
1950
18.0 mm (0.7 in)
1951
42.7 mm (1.7 in)
1952
29.0 mm (1.1 in)
1953
24.1 mm (0.9 in)
1954
16.5 mm (0.6 in)
1955
20.8 mm (0.8 in)
1956
22.9 mm (0.9 in)
1957
59.7 mm (2.4 in)
1958
31.0 mm (1.2 in)
1959
31.5 mm (1.2 in)
1960
30.0 mm (1.2 in)
1961
31.0 mm (1.2 in)
1962
45.5 mm (1.8 in)
1963
32.0 mm (1.3 in)
1964
40.1 mm (1.6 in)
1965
29.7 mm (1.2 in)
1966
40.1 mm (1.6 in)
1967
17.0 mm (0.7 in)
1968
27.4 mm (1.1 in)
1969
17.0 mm (0.7 in)
1970
27.2 mm (1.1 in)
1971
29.5 mm (1.2 in)
1972
29.2 mm (1.1 in)
1973
23.6 mm (0.9 in)
1974
31.8 mm (1.3 in)
1975
30.2 mm (1.2 in)
1976
26.2 mm (1.0 in)
1977
23.6 mm (0.9 in)
1978
34.7 mm (1.4 in)
1979
24.0 mm (0.9 in)
1980
21.4 mm (0.8 in)
1981
27.6 mm (1.1 in)
1982
26.8 mm (1.1 in)
1983
20.1 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Smithers A, 1942 to 1983. The record is 91.4 mm (3.6 in) in 1948, marked on the chart; the median year is 48.4 mm (1.9 in).
Wettest five days (Rx5day) at Smithers A by year
Year
Wettest five days (Rx5day)
1942
23.6 mm (0.9 in)
1943
26.5 mm (1.0 in)
1944
45.6 mm (1.8 in)
1945
71.7 mm (2.8 in)
1946
45.0 mm (1.8 in)
1947
47.6 mm (1.9 in)
1948
91.4 mm (3.6 in)
1949
29.9 mm (1.2 in)
1950
31.7 mm (1.2 in)
1951
82.1 mm (3.2 in)
1952
53.9 mm (2.1 in)
1953
46.7 mm (1.8 in)
1954
33.3 mm (1.3 in)
1955
43.2 mm (1.7 in)
1956
59.2 mm (2.3 in)
1957
81.0 mm (3.2 in)
1958
44.8 mm (1.8 in)
1959
51.9 mm (2.0 in)
1960
66.9 mm (2.6 in)
1961
44.1 mm (1.7 in)
1962
71.0 mm (2.8 in)
1963
51.6 mm (2.0 in)
1964
51.0 mm (2.0 in)
1965
50.8 mm (2.0 in)
1966
80.2 mm (3.2 in)
1967
30.0 mm (1.2 in)
1968
51.1 mm (2.0 in)
1969
43.7 mm (1.7 in)
1970
67.1 mm (2.6 in)
1971
46.2 mm (1.8 in)
1972
52.6 mm (2.1 in)
1973
50.3 mm (2.0 in)
1974
48.8 mm (1.9 in)
1975
48.0 mm (1.9 in)
1976
33.3 mm (1.3 in)
1977
38.8 mm (1.5 in)
1978
66.9 mm (2.6 in)
1979
35.9 mm (1.4 in)
1980
41.8 mm (1.6 in)
1981
50.8 mm (2.0 in)
1982
58.1 mm (2.3 in)
1983
40.0 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Smithers A, 1942 to 1983. The record is 42 days in 1974, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Smithers A by year
Year
Longest dry spell (CDD)
1942
20 days
1943
37 days
1944
19 days
1945
22 days
1946
29 days
1947
21 days
1948
22 days
1949
24 days
1950
25 days
1951
22 days
1952
33 days
1953
17 days
1954
30 days
1955
23 days
1956
34 days
1957
21 days
1958
27 days
1959
23 days
1960
22 days
1961
36 days
1962
28 days
1963
26 days
1964
16 days
1965
29 days
1966
23 days
1967
17 days
1968
12 days
1969
23 days
1970
26 days
1971
31 days
1972
21 days
1973
24 days
1974
42 days
1975
24 days
1976
24 days
1977
25 days
1978
23 days
1979
22 days
1980
16 days
1981
27 days
1982
27 days
1983
27 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Smithers A falls on 1 June and the median first autumn frost on 7 September, which leaves a median of 98 days between them.
Fitted over all years, the growing season changes by +10.6 days per decade at this station.
Frost dates and growing season at Smithers A
Measure
Median, all years
Earliest period
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
1 June
n/a
29 May
n/a
-3.6 days per decade
First autumn frost
7 September
n/a
7 September
n/a
+7.0 days per decade
Growing days
98 days
n/a
99 days
n/a
+10.6 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
41 years, 1943 to 1983
A day with at least 27.4 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 64.3 mm (2.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Smithers A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.4 mm (1.1 in)
5 years
36.0 mm (1.4 in)
10 years
42.1 mm (1.7 in)
25 years
50.5 mm (2.0 in)
50 years
57.3 mm (2.3 in)
Longer than the 41 years of record
100 years
64.3 mm (2.5 in)
Longer than the 41 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, 41 years of values from 1943 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: 59.7 mm (2.4 in) in 1957; 52.3 mm (2.1 in) in 1948; 52.1 mm (2.1 in) in 1945.
Download the Data
Data for Smithers A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Smithers A 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.