Record envelope, standing records and threshold days for Penticton (CA001126145), British Columbia, Canada, with 59 years of record.
Key Facts for Penticton
Penticton (CA001126145) is a weather station in British Columbia, Canada at 49.48 latitude and -119.58 longitude, 348 m (1,142 ft) above sea level.
The station reports from 1907 to 1965, 59 years of record.
1,464 records set at Penticton still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Penticton set a daily record precipitation of 9.1 mm (0.36 in) on 22 August 1965.
About the Station
Location: British Columbia, Canada, 49.48 latitude, -119.58 longitude.
Elevation: 348 m (1,142 ft).
Period of record: 1907 to 1965, 59 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 Penticton. 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 Penticton, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Mar
21.7 C (71.1 F)
-15.0 C (5.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-8.9 C (16.0 F)
n/a
n/a
May
34.4 C (93.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
36.1 C (97.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-17.2 C (1.0 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Penticton still stand. 1919 holds the most, with 68.
Standing records at Penticton by the year they were set
Year set
Standing records
1907
45
1908
52
1909
62
1910
50
1911
36
1912
41
1913
50
1914
39
1915
30
1916
59
1917
42
1918
40
1919
68
1920
32
1921
41
1922
42
1923
35
1924
68
1925
42
1926
55
1927
36
1928
28
1929
34
1930
46
1931
40
1932
39
1933
32
1934
39
1935
42
1936
60
1937
30
1938
32
1939
46
1940
29
1941
2
Wettest Day of Each Month
Jul: 39.4 mm (1.6 in)
The wettest day on record for each calendar month at Penticton. The most was 39.4 mm (1.6 in) on 10 July 1918.
Record daily precipitation for each month at Penticton
Month
Record daily precipitation (mm)
Date
Jan
15.2 mm (0.6 in)
2 January 1928
Feb
38.1 mm (1.5 in)
16 February 1909
Mar
30.5 mm (1.2 in)
5 March 1932
Apr
16.5 mm (0.6 in)
27 April 1928
May
29.7 mm (1.2 in)
9 May 1910
Jun
24.9 mm (1.0 in)
10 June 1923
Jul
39.4 mm (1.6 in)
10 July 1918
Aug
22.9 mm (0.9 in)
28 August 1908
Sep
24.1 mm (0.9 in)
24 September 1920
Oct
23.9 mm (0.9 in)
24 October 1940
Nov
17.0 mm (0.7 in)
14 November 1927
Dec
21.8 mm (0.9 in)
12 December 1921
Period of Record Coverage
1907 to 1941
Complete yearUnder 90 percent of days
35 years of record at Penticton, 1907 to 1941. 5 years have data for under 90 percent of days and are left out of rankings: 1907, 1908, 1910, 1911, 1941.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Penticton, 1909 to 1940. Blue stripes are years cooler than the station's own mean of 8.9 C (48.0 F); red stripes are warmer. The coolest year was 1916, at 7.0 C (44.6 F), and the warmest was 1926, at 10.4 C (50.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Penticton as warming stripes, 1909 to 1940
Year
Annual mean temperature
Difference from the station mean
1909
7.9 C
-1.01 C
1912
8.3 C
-0.60 C
1913
7.8 C
-1.09 C
1914
9.3 C
+0.46 C
1915
9.5 C
+0.59 C
1916
7.0 C
-1.84 C
1917
8.3 C
-0.61 C
1918
9.3 C
+0.40 C
1919
8.2 C
-0.67 C
1920
8.8 C
-0.04 C
1921
8.7 C
-0.14 C
1922
7.9 C
-0.98 C
1923
9.4 C
+0.51 C
1924
9.3 C
+0.45 C
1925
10.3 C
+1.47 C
1926
10.4 C
+1.50 C
1927
9.1 C
+0.22 C
1928
9.7 C
+0.79 C
1929
8.1 C
-0.79 C
1930
8.6 C
-0.24 C
1931
9.8 C
+0.92 C
1932
8.5 C
-0.38 C
1933
8.3 C
-0.54 C
1934
9.6 C
+0.73 C
1935
8.1 C
-0.73 C
1936
8.4 C
-0.44 C
1937
8.0 C
-0.84 C
1938
9.7 C
+0.87 C
1939
9.7 C
+0.82 C
1940
10.2 C
+1.33 C
The fitted trend in annual mean temperature here over 1909 to 1940 is 0.33 C (-0.02 to 0.68) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.60 F (-0.03 to 1.22) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Penticton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.33 C (-0.02 to 0.68) per decade
0.60 F (-0.03 to 1.22) per decade
1909 to 1940
30
Not clearly different from zero
Mean daily maximum
0.34 C (-0.04 to 0.73) per decade
0.6 F (-0.1 to 1.3) per decade
1909 to 1940
30
Not clearly different from zero
Mean daily minimum
0.32 C (-0.04 to 0.68) per decade
0.6 F (-0.1 to 1.2) per decade
1909 to 1940
30
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
1907 to 1965
Yearly extremes at Penticton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1919
35.6 C (96.1 F)
35
Coldest night (TNn)
-24.4 C (-11.9 F)
1935
-18.3 C (-0.9 F)
35
Wettest day (Rx1day)
39.4 mm (1.6 in)
1918
21.1 mm (0.8 in)
39
Wettest five days (Rx5day)
69.9 mm (2.8 in)
1909
30.7 mm (1.2 in)
39
Longest dry spell (CDD)
67 days
1929
31 days
39
Hottest day (TXx)
The hottest day of the year at Penticton, 1907 to 1965. The record is 40.0 C (104.0 F) in 1919, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Penticton by year
Year
Hottest day (TXx)
1907
34.4 C (93.9 F)
1908
35.6 C (96.1 F)
1909
36.1 C (97.0 F)
1910
35.0 C (95.0 F)
1911
35.0 C (95.0 F)
1912
32.2 C (90.0 F)
1913
33.3 C (91.9 F)
1914
36.7 C (98.1 F)
1915
35.6 C (96.1 F)
1916
33.9 C (93.0 F)
1917
36.1 C (97.0 F)
1918
35.6 C (96.1 F)
1919
40.0 C (104.0 F)
1920
36.1 C (97.0 F)
1921
35.0 C (95.0 F)
1922
36.7 C (98.1 F)
1923
36.7 C (98.1 F)
1924
35.6 C (96.1 F)
1925
37.8 C (100.0 F)
1926
40.0 C (104.0 F)
1927
36.7 C (98.1 F)
1928
36.1 C (97.0 F)
1929
35.6 C (96.1 F)
1930
38.3 C (100.9 F)
1931
37.2 C (99.0 F)
1932
34.4 C (93.9 F)
1933
35.6 C (96.1 F)
1934
37.8 C (100.0 F)
1935
33.3 C (91.9 F)
1936
37.2 C (99.0 F)
1937
35.6 C (96.1 F)
1938
37.8 C (100.0 F)
1939
37.2 C (99.0 F)
1940
35.0 C (95.0 F)
1941
16.7 C (62.1 F)
1962
n/a
1963
n/a
1964
n/a
1965
n/a
Coldest night (TNn)
The coldest night of the year at Penticton, 1907 to 1965. The record is -24.4 C (-11.9 F) in 1935, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Penticton by year
Year
Coldest night (TNn)
1907
-7.8 C (18.0 F)
1908
-18.3 C (-0.9 F)
1909
-23.3 C (-9.9 F)
1910
-22.2 C (-8.0 F)
1911
-17.2 C (1.0 F)
1912
-18.3 C (-0.9 F)
1913
-20.0 C (-4.0 F)
1914
-16.7 C (1.9 F)
1915
-15.6 C (3.9 F)
1916
-23.3 C (-9.9 F)
1917
-20.6 C (-5.1 F)
1918
-16.7 C (1.9 F)
1919
-19.4 C (-2.9 F)
1920
-14.4 C (6.1 F)
1921
-17.8 C (0.0 F)
1922
-20.0 C (-4.0 F)
1923
-21.1 C (-6.0 F)
1924
-20.6 C (-5.1 F)
1925
-16.1 C (3.0 F)
1926
-16.7 C (1.9 F)
1927
-22.2 C (-8.0 F)
1928
-16.1 C (3.0 F)
1929
-22.8 C (-9.0 F)
1930
-19.4 C (-2.9 F)
1931
-13.3 C (8.1 F)
1932
-18.9 C (-2.0 F)
1933
-21.7 C (-7.1 F)
1934
-13.9 C (7.0 F)
1935
-24.4 C (-11.9 F)
1936
-24.4 C (-11.9 F)
1937
-22.2 C (-8.0 F)
1938
-12.8 C (9.0 F)
1939
-15.6 C (3.9 F)
1940
-12.2 C (10.0 F)
1941
-9.4 C (15.1 F)
1962
n/a
1963
n/a
1964
n/a
1965
n/a
Wettest day (Rx1day)
The wettest day of the year at Penticton, 1907 to 1965. The record is 39.4 mm (1.6 in) in 1918, marked on the chart; the median year is 21.1 mm (0.8 in).
Wettest day (Rx1day) at Penticton by year
Year
Wettest day (Rx1day)
1907
9.4 mm (0.37 in)
1908
22.9 mm (0.9 in)
1909
38.1 mm (1.5 in)
1910
29.7 mm (1.2 in)
1911
15.2 mm (0.6 in)
1912
14.7 mm (0.6 in)
1913
23.1 mm (0.9 in)
1914
23.9 mm (0.9 in)
1915
18.5 mm (0.7 in)
1916
17.3 mm (0.7 in)
1917
15.7 mm (0.6 in)
1918
39.4 mm (1.6 in)
1919
15.2 mm (0.6 in)
1920
24.1 mm (0.9 in)
1921
21.8 mm (0.9 in)
1922
23.6 mm (0.9 in)
1923
24.9 mm (1.0 in)
1924
23.6 mm (0.9 in)
1925
16.0 mm (0.6 in)
1926
17.3 mm (0.7 in)
1927
17.3 mm (0.7 in)
1928
21.1 mm (0.8 in)
1929
14.5 mm (0.6 in)
1930
26.2 mm (1.0 in)
1931
16.5 mm (0.6 in)
1932
30.5 mm (1.2 in)
1933
21.1 mm (0.8 in)
1934
20.3 mm (0.8 in)
1935
24.6 mm (1.0 in)
1936
27.9 mm (1.1 in)
1937
24.4 mm (1.0 in)
1938
18.3 mm (0.7 in)
1939
18.5 mm (0.7 in)
1940
23.9 mm (0.9 in)
1941
9.4 mm (0.37 in)
1962
10.4 mm (0.4 in)
1963
17.5 mm (0.7 in)
1964
30.7 mm (1.2 in)
1965
16.0 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Penticton, 1907 to 1965. The record is 69.9 mm (2.8 in) in 1909, marked on the chart; the median year is 30.7 mm (1.2 in).
Wettest five days (Rx5day) at Penticton by year
Year
Wettest five days (Rx5day)
1907
11.0 mm (0.4 in)
1908
41.1 mm (1.6 in)
1909
69.9 mm (2.8 in)
1910
37.8 mm (1.5 in)
1911
23.8 mm (0.9 in)
1912
32.5 mm (1.3 in)
1913
38.1 mm (1.5 in)
1914
24.4 mm (1.0 in)
1915
33.5 mm (1.3 in)
1916
37.3 mm (1.5 in)
1917
31.3 mm (1.2 in)
1918
40.5 mm (1.6 in)
1919
32.2 mm (1.3 in)
1920
34.0 mm (1.3 in)
1921
25.6 mm (1.0 in)
1922
29.7 mm (1.2 in)
1923
41.4 mm (1.6 in)
1924
28.4 mm (1.1 in)
1925
23.1 mm (0.9 in)
1926
22.1 mm (0.9 in)
1927
36.3 mm (1.4 in)
1928
30.7 mm (1.2 in)
1929
20.9 mm (0.8 in)
1930
28.5 mm (1.1 in)
1931
19.6 mm (0.8 in)
1932
48.1 mm (1.9 in)
1933
38.3 mm (1.5 in)
1934
29.4 mm (1.2 in)
1935
34.0 mm (1.3 in)
1936
32.7 mm (1.3 in)
1937
30.3 mm (1.2 in)
1938
26.4 mm (1.0 in)
1939
22.5 mm (0.9 in)
1940
34.5 mm (1.4 in)
1941
14.7 mm (0.6 in)
1962
16.3 mm (0.6 in)
1963
25.6 mm (1.0 in)
1964
35.3 mm (1.4 in)
1965
24.8 mm (1.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Penticton, 1907 to 1965. The record is 67 days in 1929, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Penticton by year
Year
Longest dry spell (CDD)
1907
34 days
1908
34 days
1909
33 days
1910
31 days
1911
27 days
1912
46 days
1913
22 days
1914
25 days
1915
23 days
1916
52 days
1917
28 days
1918
33 days
1919
28 days
1920
26 days
1921
29 days
1922
27 days
1923
29 days
1924
56 days
1925
55 days
1926
33 days
1927
22 days
1928
35 days
1929
67 days
1930
31 days
1931
41 days
1932
36 days
1933
26 days
1934
31 days
1935
27 days
1936
43 days
1937
21 days
1938
38 days
1939
40 days
1940
38 days
1941
22 days
1962
17 days
1963
28 days
1964
32 days
1965
21 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Penticton falls on 6 May and the median first autumn frost on 6 October, which leaves a median of 152 days between them.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
Frost dates and growing season at Penticton
Measure
Median, all years
Earliest period
Recent period (1909 to 1940)
Recent against earliest
Fitted trend
Last spring frost
6 May
n/a
6 May
n/a
-3.9 days per decade
First autumn frost
6 October
n/a
6 October
n/a
-1.3 days per decade
Growing days
152 days
n/a
152 days
n/a
+2.6 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
32 years, 1908 to 1940
A day with at least 21.2 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 42.4 mm (1.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Penticton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
21.2 mm (0.8 in)
5 years
26.7 mm (1.1 in)
10 years
30.3 mm (1.2 in)
25 years
35.1 mm (1.4 in)
50 years
38.7 mm (1.5 in)
Longer than the 32 years of record
100 years
42.4 mm (1.7 in)
Longer than the 32 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, 32 years of values from 1908 to 1940.
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: 39.4 mm (1.6 in) in 1918; 38.1 mm (1.5 in) in 1909; 30.5 mm (1.2 in) in 1932.
Download the Data
Data for Penticton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Penticton 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.