Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Renfrew. 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 Renfrew, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
11.7 C (53.1 F)
-39.4 C (-38.9 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
38.3 C (100.9 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
1.7 C (35.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Dec
13.9 C (57.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Renfrew still stand. 1888 holds the most, with 61.
Standing records at Renfrew by the year they were set
Year set
Standing records
1885
51
1886
31
1887
45
1888
61
1889
41
1890
33
1891
52
1892
17
1893
35
1894
44
1895
58
1896
35
1897
27
1898
32
1899
29
1900
15
1902
9
1903
46
1904
24
1905
14
1906
40
1907
22
1908
36
1909
41
1910
19
1911
43
1912
26
1913
50
1914
45
1915
33
1916
43
1917
36
1918
44
1919
21
1920
37
1921
38
1922
27
1923
24
1924
21
1925
38
1926
26
1927
16
1928
29
1929
10
All-Time Record Progression
1 new records
1 all-time records were set at Renfrew between 25 July 1918 and 25 July 1918. Each dot is a new record.
When Renfrew set new all-time records
Date
Kind
Detail
1918-07-25
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
Wettest Day of Each Month
Sep: 84.1 mm (3.3 in)
The wettest day on record for each calendar month at Renfrew. The most was 84.1 mm (3.3 in) on 8 September 1919.
Record daily precipitation for each month at Renfrew
Month
Record daily precipitation (mm)
Date
Jan
45.7 mm (1.8 in)
9 January 1884
Feb
30.5 mm (1.2 in)
16 February 1885
Mar
39.6 mm (1.6 in)
23 March 1891
Apr
38.1 mm (1.5 in)
2 April 1885
May
65.8 mm (2.6 in)
16 May 1893
Jun
75.9 mm (3.0 in)
2 June 1887
Jul
61.0 mm (2.4 in)
9 July 1926
Aug
61.0 mm (2.4 in)
4 August 1915
Sep
84.1 mm (3.3 in)
8 September 1919
Oct
60.2 mm (2.4 in)
7 October 1896
Nov
39.4 mm (1.6 in)
7 November 1907
Dec
35.6 mm (1.4 in)
23 December 1913
Period of Record Coverage
1885 to 1929
Complete yearUnder 90 percent of days
44 years of record at Renfrew, 1885 to 1929. 6 years have data for under 90 percent of days and are left out of rankings: 1885, 1892, 1899, 1900, 1902, 1929.
Cooler than the station meanWarmer than the station mean
One stripe for each of 31 complete years at Renfrew, 1886 to 1928. Blue stripes are years cooler than the station's own mean of 5.1 C (41.1 F); red stripes are warmer. The coolest year was 1904, at 3.4 C (38.1 F), and the warmest was 1921, at 7.0 C (44.6 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Renfrew as warming stripes, 1886 to 1928
Year
Annual mean temperature
Difference from the station mean
1886
4.3 C
-0.79 C
1887
4.2 C
-0.92 C
1889
5.5 C
+0.46 C
1890
4.7 C
-0.39 C
1891
5.6 C
+0.52 C
1893
3.4 C
-1.65 C
1894
5.9 C
+0.81 C
1895
5.0 C
-0.09 C
1903
5.2 C
+0.16 C
1904
3.4 C
-1.69 C
1906
5.7 C
+0.67 C
1907
4.0 C
-1.10 C
1908
5.0 C
-0.10 C
1909
5.1 C
-0.01 C
1911
5.7 C
+0.66 C
1912
4.3 C
-0.79 C
1913
6.2 C
+1.14 C
1914
4.5 C
-0.55 C
1915
6.5 C
+1.39 C
1916
5.3 C
+0.18 C
1918
4.8 C
-0.26 C
1919
5.9 C
+0.84 C
1920
5.1 C
+0.02 C
1921
7.0 C
+1.94 C
1922
5.7 C
+0.64 C
1923
4.9 C
-0.19 C
1924
4.6 C
-0.51 C
1925
5.2 C
+0.11 C
1926
3.9 C
-1.17 C
1927
5.6 C
+0.54 C
1928
5.1 C
+0.07 C
The fitted trend in annual mean temperature here over 1886 to 1928 is 0.2 C (-0.1 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.1 to 0.7) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Renfrew
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.1 to 0.4) per decade
0.3 F (-0.1 to 0.7) per decade
1886 to 1928
31
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.6 to -0.1) per decade
-0.6 F (-1.0 to -0.1) per decade
1886 to 1928
31
Fall
Mean daily minimum
0.6 C (0.4 to 0.9) per decade
1.1 F (0.6 to 1.6) per decade
1886 to 1928
31
Rise
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
1882 to 1929
Yearly extremes at Renfrew: 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)
1911
35.3 C (95.5 F)
44
Coldest night (TNn)
-40.0 C (-40.0 F)
1893
-34.4 C (-29.9 F)
44
Wettest day (Rx1day)
84.1 mm (3.3 in)
1919
39.6 mm (1.6 in)
47
Wettest five days (Rx5day)
115.3 mm (4.5 in)
1915
57.1 mm (2.2 in)
47
Longest dry spell (CDD)
32 days
1910
17 days
47
Hottest day (TXx)
The hottest day of the year at Renfrew, 1882 to 1929. The record is 39.4 C (102.9 F) in 1911, marked on the chart; the median year is 35.3 C (95.5 F).
Hottest day (TXx) at Renfrew by year
Year
Hottest day (TXx)
1882
n/a
1883
n/a
1884
n/a
1885
32.2 C (90.0 F)
1886
35.6 C (96.1 F)
1887
35.6 C (96.1 F)
1888
36.1 C (97.0 F)
1889
35.0 C (95.0 F)
1890
35.6 C (96.1 F)
1891
35.6 C (96.1 F)
1892
38.3 C (100.9 F)
1893
36.7 C (98.1 F)
1894
35.6 C (96.1 F)
1895
38.3 C (100.9 F)
1896
34.4 C (93.9 F)
1897
38.3 C (100.9 F)
1898
35.6 C (96.1 F)
1899
35.6 C (96.1 F)
1900
31.1 C (88.0 F)
1902
30.6 C (87.1 F)
1903
32.8 C (91.0 F)
1904
34.4 C (93.9 F)
1905
32.2 C (90.0 F)
1906
34.4 C (93.9 F)
1907
35.0 C (95.0 F)
1908
36.1 C (97.0 F)
1909
35.6 C (96.1 F)
1910
35.6 C (96.1 F)
1911
39.4 C (102.9 F)
1912
35.6 C (96.1 F)
1913
37.8 C (100.0 F)
1914
33.3 C (91.9 F)
1915
32.8 C (91.0 F)
1916
39.4 C (102.9 F)
1917
36.1 C (97.0 F)
1918
34.4 C (93.9 F)
1919
37.2 C (99.0 F)
1920
34.4 C (93.9 F)
1921
38.9 C (102.0 F)
1922
34.4 C (93.9 F)
1923
34.4 C (93.9 F)
1924
33.9 C (93.0 F)
1925
34.4 C (93.9 F)
1926
29.4 C (84.9 F)
1927
31.1 C (88.0 F)
1928
31.1 C (88.0 F)
1929
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Renfrew, 1882 to 1929. The record is -40.0 C (-40.0 F) in 1893, marked on the chart; the median year is -34.4 C (-29.9 F).
Coldest night (TNn) at Renfrew by year
Year
Coldest night (TNn)
1882
n/a
1883
n/a
1884
n/a
1885
-35.0 C (-31.0 F)
1886
-38.9 C (-38.0 F)
1887
-38.9 C (-38.0 F)
1888
-39.4 C (-38.9 F)
1889
-35.0 C (-31.0 F)
1890
-28.3 C (-18.9 F)
1891
-34.4 C (-29.9 F)
1892
-35.0 C (-31.0 F)
1893
-40.0 C (-40.0 F)
1894
-34.4 C (-29.9 F)
1895
-33.9 C (-29.0 F)
1896
-37.8 C (-36.0 F)
1897
-34.4 C (-29.9 F)
1898
-36.7 C (-34.1 F)
1899
-34.4 C (-29.9 F)
1900
-30.0 C (-22.0 F)
1902
-33.3 C (-27.9 F)
1903
-33.9 C (-29.0 F)
1904
-36.7 C (-34.1 F)
1905
-31.7 C (-25.1 F)
1906
-33.9 C (-29.0 F)
1907
-33.3 C (-27.9 F)
1908
-37.8 C (-36.0 F)
1909
-31.1 C (-24.0 F)
1910
-33.9 C (-29.0 F)
1911
-31.7 C (-25.1 F)
1912
-38.3 C (-36.9 F)
1913
-33.9 C (-29.0 F)
1914
-36.1 C (-33.0 F)
1915
-37.2 C (-35.0 F)
1916
-35.0 C (-31.0 F)
1917
-37.8 C (-36.0 F)
1918
-35.0 C (-31.0 F)
1919
-31.1 C (-24.0 F)
1920
-35.0 C (-31.0 F)
1921
-32.8 C (-27.0 F)
1922
-32.2 C (-26.0 F)
1923
-34.4 C (-29.9 F)
1924
-37.2 C (-35.0 F)
1925
-36.7 C (-34.1 F)
1926
-31.7 C (-25.1 F)
1927
-32.2 C (-26.0 F)
1928
-32.2 C (-26.0 F)
1929
-33.3 C (-27.9 F)
Wettest day (Rx1day)
The wettest day of the year at Renfrew, 1882 to 1929. The record is 84.1 mm (3.3 in) in 1919, marked on the chart; the median year is 39.6 mm (1.6 in).
Wettest day (Rx1day) at Renfrew by year
Year
Wettest day (Rx1day)
1882
43.7 mm (1.7 in)
1883
52.1 mm (2.1 in)
1884
45.7 mm (1.8 in)
1885
38.1 mm (1.5 in)
1886
52.1 mm (2.1 in)
1887
75.9 mm (3.0 in)
1888
29.0 mm (1.1 in)
1889
38.1 mm (1.5 in)
1890
43.9 mm (1.7 in)
1891
39.6 mm (1.6 in)
1892
15.5 mm (0.6 in)
1893
65.8 mm (2.6 in)
1894
41.4 mm (1.6 in)
1895
25.9 mm (1.0 in)
1896
60.2 mm (2.4 in)
1897
30.0 mm (1.2 in)
1898
50.8 mm (2.0 in)
1899
39.4 mm (1.6 in)
1900
29.0 mm (1.1 in)
1902
40.6 mm (1.6 in)
1903
36.1 mm (1.4 in)
1904
49.8 mm (2.0 in)
1905
69.1 mm (2.7 in)
1906
36.3 mm (1.4 in)
1907
39.4 mm (1.6 in)
1908
35.1 mm (1.4 in)
1909
25.4 mm (1.0 in)
1910
58.4 mm (2.3 in)
1911
45.2 mm (1.8 in)
1912
46.2 mm (1.8 in)
1913
42.4 mm (1.7 in)
1914
33.0 mm (1.3 in)
1915
61.0 mm (2.4 in)
1916
40.6 mm (1.6 in)
1917
28.4 mm (1.1 in)
1918
40.4 mm (1.6 in)
1919
84.1 mm (3.3 in)
1920
33.3 mm (1.3 in)
1921
33.3 mm (1.3 in)
1922
28.4 mm (1.1 in)
1923
25.7 mm (1.0 in)
1924
66.3 mm (2.6 in)
1925
34.3 mm (1.4 in)
1926
61.0 mm (2.4 in)
1927
36.1 mm (1.4 in)
1928
28.7 mm (1.1 in)
1929
16.0 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Renfrew, 1882 to 1929. The record is 115.3 mm (4.5 in) in 1915, marked on the chart; the median year is 57.1 mm (2.2 in).
Wettest five days (Rx5day) at Renfrew by year
Year
Wettest five days (Rx5day)
1882
61.7 mm (2.4 in)
1883
85.4 mm (3.4 in)
1884
55.9 mm (2.2 in)
1885
55.9 mm (2.2 in)
1886
55.4 mm (2.2 in)
1887
81.8 mm (3.2 in)
1888
57.1 mm (2.2 in)
1889
101.1 mm (4.0 in)
1890
58.2 mm (2.3 in)
1891
50.2 mm (2.0 in)
1892
23.4 mm (0.9 in)
1893
84.6 mm (3.3 in)
1894
41.4 mm (1.6 in)
1895
25.9 mm (1.0 in)
1896
109.2 mm (4.3 in)
1897
32.5 mm (1.3 in)
1898
62.5 mm (2.5 in)
1899
72.6 mm (2.9 in)
1900
39.7 mm (1.6 in)
1902
56.3 mm (2.2 in)
1903
67.6 mm (2.7 in)
1904
60.7 mm (2.4 in)
1905
82.6 mm (3.3 in)
1906
41.6 mm (1.6 in)
1907
48.3 mm (1.9 in)
1908
58.4 mm (2.3 in)
1909
51.6 mm (2.0 in)
1910
82.6 mm (3.3 in)
1911
59.9 mm (2.4 in)
1912
59.4 mm (2.3 in)
1913
66.3 mm (2.6 in)
1914
56.6 mm (2.2 in)
1915
115.3 mm (4.5 in)
1916
58.4 mm (2.3 in)
1917
44.0 mm (1.7 in)
1918
62.7 mm (2.5 in)
1919
104.2 mm (4.1 in)
1920
43.4 mm (1.7 in)
1921
40.4 mm (1.6 in)
1922
46.5 mm (1.8 in)
1923
51.1 mm (2.0 in)
1924
87.9 mm (3.5 in)
1925
51.0 mm (2.0 in)
1926
85.4 mm (3.4 in)
1927
47.3 mm (1.9 in)
1928
46.3 mm (1.8 in)
1929
32.3 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Renfrew, 1882 to 1929. The record is 32 days in 1910, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Renfrew by year
Year
Longest dry spell (CDD)
1882
14 days
1883
15 days
1884
19 days
1885
14 days
1886
21 days
1887
23 days
1888
16 days
1889
19 days
1890
15 days
1891
22 days
1892
7 days
1893
23 days
1894
19 days
1895
15 days
1896
17 days
1897
15 days
1898
18 days
1899
22 days
1900
24 days
1902
21 days
1903
24 days
1904
21 days
1905
19 days
1906
24 days
1907
12 days
1908
17 days
1909
17 days
1910
32 days
1911
14 days
1912
13 days
1913
15 days
1914
21 days
1915
23 days
1916
13 days
1917
30 days
1918
22 days
1919
15 days
1920
16 days
1921
20 days
1922
21 days
1923
14 days
1924
16 days
1925
19 days
1926
11 days
1927
15 days
1928
14 days
1929
7 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
31 years with a frost
Across 31 years with a frost, the median last spring frost at Renfrew falls on 16 May and the median first autumn frost on 19 September, which leaves a median of 127 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
Frost dates and growing season at Renfrew
Measure
Median, all years
Earliest period
Recent period (1887 to 1928)
Recent against earliest
Fitted trend
Last spring frost
16 May
n/a
16 May
n/a
-0.3 days per decade
First autumn frost
19 September
n/a
19 September
n/a
+2.9 days per decade
Growing days
127 days
n/a
127 days
n/a
+3.2 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
30 years, 1883 to 1928
A day with at least 41.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 101.8 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Renfrew: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
41.4 mm (1.6 in)
5 years
55.3 mm (2.2 in)
10 years
65.4 mm (2.6 in)
25 years
79.2 mm (3.1 in)
50 years
90.2 mm (3.6 in)
Longer than the 30 years of record
100 years
101.8 mm (4.0 in)
Longer than the 30 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, 30 years of values from 1883 to 1928.
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: 84.1 mm (3.3 in) in 1919; 75.9 mm (3.0 in) in 1887; 69.1 mm (2.7 in) in 1905.
Download the Data
Data for Renfrew standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Renfrew 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.