Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Pinawa. 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 Pinawa, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
7.8 C (46.0 F)
-46.1 C (-51.0 F)
n/a
n/a
Feb
10.0 C (50.0 F)
-46.1 C (-51.0 F)
n/a
n/a
Mar
21.1 C (70.0 F)
-42.2 C (-44.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-32.2 C (-26.0 F)
n/a
n/a
May
32.8 C (91.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
34.4 C (93.9 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
32.2 C (90.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
25.6 C (78.1 F)
-17.2 C (1.0 F)
n/a
n/a
Nov
16.7 C (62.1 F)
-32.8 C (-27.0 F)
n/a
n/a
Dec
9.4 C (48.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Pinawa still stand. 1936 holds the most, with 78.
Standing records at Pinawa by the year they were set
Year set
Standing records
1915
33
1916
38
1917
60
1918
46
1919
63
1920
41
1921
34
1922
36
1923
65
1924
43
1925
36
1926
41
1927
33
1928
37
1929
53
1930
49
1931
54
1932
66
1933
47
1934
41
1935
34
1936
78
1937
18
1938
22
1939
36
1940
46
1941
45
1942
26
1943
21
1944
17
1945
37
1946
31
1947
28
1948
19
1949
36
1950
39
1951
15
Wettest Day of Each Month
Jun: 74.4 mm (2.9 in)
The wettest day on record for each calendar month at Pinawa. The most was 74.4 mm (2.9 in) on 1 June 1918.
Record daily precipitation for each month at Pinawa
Month
Record daily precipitation (mm)
Date
Jan
22.1 mm (0.9 in)
15 January 1949
Feb
15.2 mm (0.6 in)
2 February 1922
Mar
20.3 mm (0.8 in)
11 March 1925
Apr
26.7 mm (1.1 in)
16 April 1924
May
27.4 mm (1.1 in)
11 May 1922
Jun
74.4 mm (2.9 in)
1 June 1918
Jul
70.6 mm (2.8 in)
1 July 1919
Aug
48.8 mm (1.9 in)
21 August 1917
Sep
46.5 mm (1.8 in)
7 September 1915
Oct
57.9 mm (2.3 in)
10 October 1949
Nov
24.1 mm (0.9 in)
20 November 1930
Dec
33.0 mm (1.3 in)
26 December 1916
Period of Record Coverage
1915 to 1951
Complete yearUnder 90 percent of days
37 years of record at Pinawa, 1915 to 1951. 2 years have data for under 90 percent of days and are left out of rankings: 1915, 1951.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Pinawa, 1916 to 1950. Blue stripes are years cooler than the station's own mean of 1.3 C (34.3 F); red stripes are warmer. The coolest year was 1950, at -0.9 C (30.4 F), and the warmest was 1931, at 3.9 C (39.0 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Pinawa as warming stripes, 1916 to 1950
Year
Annual mean temperature
Difference from the station mean
1916
-0.1 C
-1.32 C
1917
-0.9 C
-2.15 C
1919
1.1 C
-0.19 C
1920
1.8 C
+0.55 C
1921
2.4 C
+1.14 C
1922
2.0 C
+0.71 C
1923
1.5 C
+0.19 C
1924
0.4 C
-0.82 C
1925
0.9 C
-0.38 C
1926
0.7 C
-0.60 C
1927
0.7 C
-0.55 C
1928
1.7 C
+0.48 C
1929
-0.3 C
-1.57 C
1930
1.5 C
+0.27 C
1931
3.9 C
+2.65 C
1932
1.2 C
-0.08 C
1933
0.4 C
-0.88 C
1934
1.1 C
-0.17 C
1935
0.8 C
-0.47 C
1936
-0.2 C
-1.46 C
1937
0.6 C
-0.66 C
1938
2.3 C
+0.99 C
1939
1.9 C
+0.63 C
1940
2.2 C
+0.98 C
1941
2.9 C
+1.64 C
1943
1.2 C
-0.03 C
1944
2.7 C
+1.47 C
1945
1.3 C
+0.02 C
1946
1.8 C
+0.50 C
1947
1.4 C
+0.10 C
1948
2.1 C
+0.81 C
1949
1.5 C
+0.24 C
1950
-0.9 C
-2.17 C
The fitted trend in annual mean temperature here over 1916 to 1950 is 0.2 C (-0.2 to 0.6) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.4 F (-0.3 to 1.1) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Pinawa
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.2 to 0.6) per decade
0.4 F (-0.3 to 1.1) per decade
1916 to 1950
33
Not clearly different from zero
Mean daily maximum
0.1 C (-0.3 to 0.5) per decade
0.2 F (-0.5 to 0.8) per decade
1916 to 1950
33
Not clearly different from zero
Mean daily minimum
0.3 C (-0.1 to 0.7) per decade
0.6 F (-0.1 to 1.3) per decade
1916 to 1950
33
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
1915 to 1951
Yearly extremes at Pinawa: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1936
32.8 C (91.0 F)
37
Coldest night (TNn)
-46.1 C (-51.0 F)
1933
-40.6 C (-41.1 F)
37
Wettest day (Rx1day)
74.4 mm (2.9 in)
1918
22.6 mm (0.9 in)
37
Wettest five days (Rx5day)
87.3 mm (3.4 in)
1919
37.6 mm (1.5 in)
37
Longest dry spell (CDD)
42 days
1938
25 days
37
Hottest day (TXx)
The hottest day of the year at Pinawa, 1915 to 1951. The record is 38.9 C (102.0 F) in 1936, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Pinawa by year
Year
Hottest day (TXx)
1915
31.1 C (88.0 F)
1916
33.9 C (93.0 F)
1917
32.2 C (90.0 F)
1918
31.7 C (89.1 F)
1919
32.8 C (91.0 F)
1920
32.8 C (91.0 F)
1921
35.0 C (95.0 F)
1922
31.7 C (89.1 F)
1923
32.8 C (91.0 F)
1924
28.9 C (84.0 F)
1925
31.7 C (89.1 F)
1926
33.3 C (91.9 F)
1927
29.4 C (84.9 F)
1928
32.2 C (90.0 F)
1929
33.3 C (91.9 F)
1930
32.8 C (91.0 F)
1931
33.9 C (93.0 F)
1932
32.8 C (91.0 F)
1933
32.2 C (90.0 F)
1934
32.8 C (91.0 F)
1935
31.7 C (89.1 F)
1936
38.9 C (102.0 F)
1937
31.7 C (89.1 F)
1938
31.1 C (88.0 F)
1939
35.6 C (96.1 F)
1940
33.9 C (93.0 F)
1941
33.3 C (91.9 F)
1942
31.1 C (88.0 F)
1943
33.3 C (91.9 F)
1944
29.4 C (84.9 F)
1945
33.3 C (91.9 F)
1946
32.8 C (91.0 F)
1947
32.2 C (90.0 F)
1948
30.6 C (87.1 F)
1949
34.4 C (93.9 F)
1950
32.2 C (90.0 F)
1951
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Pinawa, 1915 to 1951. The record is -46.1 C (-51.0 F) in 1933, marked on the chart; the median year is -40.6 C (-41.1 F).
Coldest night (TNn) at Pinawa by year
Year
Coldest night (TNn)
1915
-28.3 C (-18.9 F)
1916
-43.9 C (-47.0 F)
1917
-41.7 C (-43.1 F)
1918
-45.6 C (-50.1 F)
1919
-37.8 C (-36.0 F)
1920
-41.1 C (-42.0 F)
1921
-38.3 C (-36.9 F)
1922
-41.1 C (-42.0 F)
1923
-41.1 C (-42.0 F)
1924
-38.9 C (-38.0 F)
1925
-43.9 C (-47.0 F)
1926
-36.7 C (-34.1 F)
1927
-41.7 C (-43.1 F)
1928
-37.2 C (-35.0 F)
1929
-39.4 C (-38.9 F)
1930
-44.4 C (-47.9 F)
1931
-34.4 C (-29.9 F)
1932
-38.9 C (-38.0 F)
1933
-46.1 C (-51.0 F)
1934
-45.0 C (-49.0 F)
1935
-42.2 C (-44.0 F)
1936
-45.6 C (-50.1 F)
1937
-42.8 C (-45.0 F)
1938
-40.0 C (-40.0 F)
1939
-40.6 C (-41.1 F)
1940
-40.0 C (-40.0 F)
1941
-45.0 C (-49.0 F)
1942
-38.3 C (-36.9 F)
1943
-46.1 C (-51.0 F)
1944
-35.6 C (-32.1 F)
1945
-36.1 C (-33.0 F)
1946
-38.3 C (-36.9 F)
1947
-39.4 C (-38.9 F)
1948
-38.3 C (-36.9 F)
1949
-45.0 C (-49.0 F)
1950
-43.3 C (-45.9 F)
1951
-39.4 C (-38.9 F)
Wettest day (Rx1day)
The wettest day of the year at Pinawa, 1915 to 1951. The record is 74.4 mm (2.9 in) in 1918, marked on the chart; the median year is 22.6 mm (0.9 in).
Wettest day (Rx1day) at Pinawa by year
Year
Wettest day (Rx1day)
1915
48.3 mm (1.9 in)
1916
65.3 mm (2.6 in)
1917
48.8 mm (1.9 in)
1918
74.4 mm (2.9 in)
1919
70.6 mm (2.8 in)
1920
16.3 mm (0.6 in)
1921
54.6 mm (2.1 in)
1922
34.5 mm (1.4 in)
1923
45.7 mm (1.8 in)
1924
26.7 mm (1.1 in)
1925
21.6 mm (0.9 in)
1926
18.0 mm (0.7 in)
1927
17.8 mm (0.7 in)
1928
42.4 mm (1.7 in)
1929
57.2 mm (2.3 in)
1930
24.1 mm (0.9 in)
1931
9.9 mm (0.39 in)
1932
14.0 mm (0.6 in)
1933
16.0 mm (0.6 in)
1934
27.4 mm (1.1 in)
1935
22.6 mm (0.9 in)
1936
18.5 mm (0.7 in)
1937
19.8 mm (0.8 in)
1938
11.7 mm (0.5 in)
1939
19.1 mm (0.8 in)
1940
10.9 mm (0.4 in)
1941
28.7 mm (1.1 in)
1942
21.1 mm (0.8 in)
1943
13.7 mm (0.5 in)
1944
24.6 mm (1.0 in)
1945
21.6 mm (0.9 in)
1946
29.5 mm (1.2 in)
1947
12.4 mm (0.5 in)
1948
19.8 mm (0.8 in)
1949
57.9 mm (2.3 in)
1950
24.4 mm (1.0 in)
1951
12.2 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Pinawa, 1915 to 1951. The record is 87.3 mm (3.4 in) in 1919, marked on the chart; the median year is 37.6 mm (1.5 in).
Wettest five days (Rx5day) at Pinawa by year
Year
Wettest five days (Rx5day)
1915
58.7 mm (2.3 in)
1916
65.3 mm (2.6 in)
1917
53.1 mm (2.1 in)
1918
80.0 mm (3.1 in)
1919
87.3 mm (3.4 in)
1920
40.1 mm (1.6 in)
1921
57.7 mm (2.3 in)
1922
59.6 mm (2.3 in)
1923
49.5 mm (1.9 in)
1924
40.7 mm (1.6 in)
1925
28.7 mm (1.1 in)
1926
31.8 mm (1.3 in)
1927
31.0 mm (1.2 in)
1928
49.6 mm (2.0 in)
1929
62.2 mm (2.4 in)
1930
53.1 mm (2.1 in)
1931
25.0 mm (1.0 in)
1932
36.1 mm (1.4 in)
1933
22.2 mm (0.9 in)
1934
32.2 mm (1.3 in)
1935
33.8 mm (1.3 in)
1936
35.1 mm (1.4 in)
1937
35.6 mm (1.4 in)
1938
19.1 mm (0.8 in)
1939
40.8 mm (1.6 in)
1940
21.1 mm (0.8 in)
1941
37.6 mm (1.5 in)
1942
41.0 mm (1.6 in)
1943
28.2 mm (1.1 in)
1944
31.7 mm (1.2 in)
1945
31.5 mm (1.2 in)
1946
36.1 mm (1.4 in)
1947
27.1 mm (1.1 in)
1948
50.5 mm (2.0 in)
1949
67.1 mm (2.6 in)
1950
47.7 mm (1.9 in)
1951
16.0 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Pinawa, 1915 to 1951. The record is 42 days in 1938, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Pinawa by year
Year
Longest dry spell (CDD)
1915
17 days
1916
18 days
1917
28 days
1918
19 days
1919
20 days
1920
26 days
1921
19 days
1922
19 days
1923
27 days
1924
26 days
1925
22 days
1926
33 days
1927
25 days
1928
32 days
1929
21 days
1930
28 days
1931
28 days
1932
29 days
1933
31 days
1934
22 days
1935
23 days
1936
29 days
1937
14 days
1938
42 days
1939
25 days
1940
21 days
1941
25 days
1942
15 days
1943
20 days
1944
31 days
1945
29 days
1946
39 days
1947
30 days
1948
37 days
1949
21 days
1950
25 days
1951
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
33 years with a frost
Across 33 years with a frost, the median last spring frost at Pinawa falls on 30 May and the median first autumn frost on 13 September, which leaves a median of 108 days between them.
Fitted over all years, the growing season changes by +4.3 days per decade at this station.
Frost dates and growing season at Pinawa
Measure
Median, all years
Earliest period
Recent period (1920 to 1950)
Recent against earliest
Fitted trend
Last spring frost
30 May
n/a
30 May
n/a
+0.9 days per decade
First autumn frost
13 September
n/a
13 September
n/a
+5.1 days per decade
Growing days
108 days
n/a
108 days
n/a
+4.3 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
35 years, 1916 to 1950
A day with at least 24.5 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 108.8 mm (4.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Pinawa: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
24.5 mm (1.0 in)
5 years
39.6 mm (1.6 in)
10 years
52.1 mm (2.1 in)
25 years
71.3 mm (2.8 in)
50 years
88.6 mm (3.5 in)
Longer than the 35 years of record
100 years
108.8 mm (4.3 in)
Longer than the 35 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, 35 years of values from 1916 to 1950.
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: 74.4 mm (2.9 in) in 1918; 70.6 mm (2.8 in) in 1919; 65.3 mm (2.6 in) in 1916.
Download the Data
Data for Pinawa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pinawa 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.