Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at St Ephrem. 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 St Ephrem, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.2 C (54.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Feb
15.5 C (59.9 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
19.4 C (66.9 F)
-31.0 C (-23.8 F)
n/a
n/a
Apr
26.7 C (80.1 F)
-18.9 C (-2.0 F)
n/a
n/a
May
31.7 C (89.1 F)
-9.0 C (15.8 F)
n/a
n/a
Jun
33.9 C (93.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
33.9 C (93.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
34.4 C (93.9 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
31.7 C (89.1 F)
-7.0 C (19.4 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at St Ephrem still stand. 1949 holds the most, with 54.
Standing records at St Ephrem by the year they were set
Year set
Standing records
1929
38
1930
37
1931
35
1932
38
1933
17
1934
42
1935
11
1939
2
1942
12
1943
23
1944
14
1945
3
1946
37
1947
19
1948
33
1949
54
1950
41
1951
33
1952
22
1953
17
1954
19
1955
27
1956
25
1957
42
1958
22
1959
32
1960
15
1961
17
1962
27
1963
20
1964
29
1965
27
1966
40
1967
24
1968
37
1969
30
1970
29
1971
30
1972
30
1973
36
1974
38
1975
27
1976
43
1977
36
1978
31
1979
54
1980
20
1981
50
1982
46
1983
33
All-Time Record Progression
3 new records
3 all-time records were set at St Ephrem between 2 August 1975 and 3 February 1982. Each dot is a new record.
When St Ephrem set new all-time records
Date
Kind
Detail
1975-08-02
Record high maximum temperature
Record high maximum temperature 34.4 C (93.9 F)
1980-12-25
Record low maximum temperature
Record low maximum temperature -30.0 C (-22.0 F)
1982-02-03
Record daily precipitation
Record daily precipitation 106.0 mm (4.2 in)
Wettest Day of Each Month
Feb: 106.0 mm (4.2 in)
The wettest day on record for each calendar month at St Ephrem. The most was 106.0 mm (4.2 in) on 3 February 1982.
Record daily precipitation for each month at St Ephrem
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
1 January 1961
Feb
106.0 mm (4.2 in)
3 February 1982
Mar
49.0 mm (1.9 in)
17 March 1972
Apr
48.3 mm (1.9 in)
5 April 1952
May
46.7 mm (1.8 in)
29 May 1960
Jun
53.3 mm (2.1 in)
1 June 1952
Jul
68.1 mm (2.7 in)
11 July 1976
Aug
74.8 mm (2.9 in)
25 August 1982
Sep
69.1 mm (2.7 in)
15 September 1929
Oct
43.2 mm (1.7 in)
6 October 1962
Nov
50.5 mm (2.0 in)
3 November 1951
Dec
80.0 mm (3.1 in)
10 December 1946
Period of Record Coverage
1929 to 1983
Complete yearUnder 90 percent of days
50 years of record at St Ephrem, 1929 to 1983. 16 years have data for under 90 percent of days and are left out of rankings: 1929, 1933, 1934, 1935, 1939, 1942, 1943, 1944 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 32 complete years at St Ephrem, 1930 to 1983. Blue stripes are years cooler than the station's own mean of 3.6 C (38.5 F); red stripes are warmer. The coolest year was 1972, at 2.5 C (36.5 F), and the warmest was 1973, at 4.8 C (40.6 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at St Ephrem as warming stripes, 1930 to 1983
Year
Annual mean temperature
Difference from the station mean
1930
3.2 C
-0.42 C
1931
4.1 C
+0.47 C
1932
3.5 C
-0.10 C
1948
4.0 C
+0.39 C
1950
4.0 C
+0.38 C
1951
4.7 C
+1.11 C
1955
3.5 C
-0.11 C
1956
2.9 C
-0.68 C
1957
4.0 C
+0.35 C
1959
3.8 C
+0.16 C
1960
4.1 C
+0.50 C
1961
3.9 C
+0.26 C
1963
3.1 C
-0.48 C
1964
3.6 C
-0.02 C
1965
3.0 C
-0.59 C
1966
4.0 C
+0.40 C
1967
3.2 C
-0.41 C
1968
3.2 C
-0.42 C
1969
3.8 C
+0.18 C
1970
3.2 C
-0.36 C
1971
3.2 C
-0.45 C
1972
2.5 C
-1.09 C
1973
4.8 C
+1.18 C
1974
3.1 C
-0.53 C
1975
4.2 C
+0.56 C
1976
2.9 C
-0.67 C
1977
3.8 C
+0.16 C
1978
2.9 C
-0.73 C
1980
3.1 C
-0.51 C
1981
4.3 C
+0.74 C
1982
3.4 C
-0.24 C
1983
4.4 C
+0.84 C
The fitted trend in annual mean temperature here over 1930 to 1983 is -0.04 C (-0.19 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.2) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at St Ephrem
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.19 to 0.10) per decade
-0.1 F (-0.3 to 0.2) per decade
1930 to 1983
32
Not clearly different from zero
Mean daily maximum
-0.02 C (-0.17 to 0.14) per decade
-0.03 F (-0.31 to 0.25) per decade
1930 to 1983
32
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.2) per decade
1930 to 1983
32
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
1929 to 1983
Yearly extremes at St Ephrem: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1975
30.3 C (86.5 F)
50
Coldest night (TNn)
-41.7 C (-43.1 F)
1943
-31.4 C (-24.5 F)
50
Wettest day (Rx1day)
106.0 mm (4.2 in)
1982
43.2 mm (1.7 in)
50
Wettest five days (Rx5day)
134.1 mm (5.3 in)
1982
71.2 mm (2.8 in)
50
Longest dry spell (CDD)
33 days
1939
15 days
50
Hottest day (TXx)
The hottest day of the year at St Ephrem, 1929 to 1983. The record is 34.4 C (93.9 F) in 1975, marked on the chart; the median year is 30.3 C (86.5 F).
Hottest day (TXx) at St Ephrem by year
Year
Hottest day (TXx)
1929
27.8 C (82.0 F)
1930
30.0 C (86.0 F)
1931
32.2 C (90.0 F)
1932
28.9 C (84.0 F)
1933
25.6 C (78.1 F)
1934
31.7 C (89.1 F)
1935
10.0 C (50.0 F)
1939
10.0 C (50.0 F)
1942
30.6 C (87.1 F)
1943
7.8 C (46.0 F)
1944
11.1 C (52.0 F)
1945
27.8 C (82.0 F)
1946
31.7 C (89.1 F)
1947
33.9 C (93.0 F)
1948
31.1 C (88.0 F)
1949
32.2 C (90.0 F)
1950
30.0 C (86.0 F)
1951
30.0 C (86.0 F)
1952
33.3 C (91.9 F)
1953
32.2 C (90.0 F)
1954
33.9 C (93.0 F)
1955
33.3 C (91.9 F)
1956
30.6 C (87.1 F)
1957
31.1 C (88.0 F)
1958
28.3 C (82.9 F)
1959
32.8 C (91.0 F)
1960
30.6 C (87.1 F)
1961
30.0 C (86.0 F)
1962
29.4 C (84.9 F)
1963
32.2 C (90.0 F)
1964
29.4 C (84.9 F)
1965
30.0 C (86.0 F)
1966
29.4 C (84.9 F)
1967
29.4 C (84.9 F)
1968
31.1 C (88.0 F)
1969
30.0 C (86.0 F)
1970
31.1 C (88.0 F)
1971
30.0 C (86.0 F)
1972
30.0 C (86.0 F)
1973
30.0 C (86.0 F)
1974
29.4 C (84.9 F)
1975
34.4 C (93.9 F)
1976
30.0 C (86.0 F)
1977
31.7 C (89.1 F)
1978
31.1 C (88.0 F)
1979
31.7 C (89.1 F)
1980
32.0 C (89.6 F)
1981
29.5 C (85.1 F)
1982
31.0 C (87.8 F)
1983
33.0 C (91.4 F)
Coldest night (TNn)
The coldest night of the year at St Ephrem, 1929 to 1983. The record is -41.7 C (-43.1 F) in 1943, marked on the chart; the median year is -31.4 C (-24.5 F).
Coldest night (TNn) at St Ephrem by year
Year
Coldest night (TNn)
1929
-27.8 C (-18.0 F)
1930
-28.9 C (-20.0 F)
1931
-27.8 C (-18.0 F)
1932
-22.8 C (-9.0 F)
1933
-25.6 C (-14.1 F)
1934
-23.3 C (-9.9 F)
1935
-30.6 C (-23.1 F)
1939
-25.0 C (-13.0 F)
1942
-8.3 C (17.1 F)
1943
-41.7 C (-43.1 F)
1944
-39.4 C (-38.9 F)
1945
-2.8 C (27.0 F)
1946
-34.4 C (-29.9 F)
1947
-25.0 C (-13.0 F)
1948
-30.0 C (-22.0 F)
1949
-26.7 C (-16.1 F)
1950
-30.0 C (-22.0 F)
1951
-37.2 C (-35.0 F)
1952
-30.0 C (-22.0 F)
1953
-7.2 C (19.0 F)
1954
-19.4 C (-2.9 F)
1955
-32.2 C (-26.0 F)
1956
-29.4 C (-20.9 F)
1957
-37.2 C (-35.0 F)
1958
-30.6 C (-23.1 F)
1959
-31.1 C (-24.0 F)
1960
-32.8 C (-27.0 F)
1961
-31.7 C (-25.1 F)
1962
-38.3 C (-36.9 F)
1963
-31.7 C (-25.1 F)
1964
-27.8 C (-18.0 F)
1965
-32.8 C (-27.0 F)
1966
-33.9 C (-29.0 F)
1967
-37.2 C (-35.0 F)
1968
-32.2 C (-26.0 F)
1969
-28.9 C (-20.0 F)
1970
-33.3 C (-27.9 F)
1971
-33.9 C (-29.0 F)
1972
-36.1 C (-33.0 F)
1973
-32.8 C (-27.0 F)
1974
-37.2 C (-35.0 F)
1975
-34.4 C (-29.9 F)
1976
-32.8 C (-27.0 F)
1977
-28.9 C (-20.0 F)
1978
-29.4 C (-20.9 F)
1979
-32.2 C (-26.0 F)
1980
-33.5 C (-28.3 F)
1981
-36.0 C (-32.8 F)
1982
-34.0 C (-29.2 F)
1983
-30.0 C (-22.0 F)
Wettest day (Rx1day)
The wettest day of the year at St Ephrem, 1929 to 1983. The record is 106.0 mm (4.2 in) in 1982, marked on the chart; the median year is 43.2 mm (1.7 in).
Wettest day (Rx1day) at St Ephrem by year
Year
Wettest day (Rx1day)
1929
69.1 mm (2.7 in)
1930
38.1 mm (1.5 in)
1931
31.8 mm (1.3 in)
1932
55.4 mm (2.2 in)
1933
33.0 mm (1.3 in)
1934
48.3 mm (1.9 in)
1935
17.8 mm (0.7 in)
1939
8.9 mm (0.35 in)
1942
40.6 mm (1.6 in)
1943
27.4 mm (1.1 in)
1944
12.7 mm (0.5 in)
1945
31.8 mm (1.3 in)
1946
80.0 mm (3.1 in)
1947
43.7 mm (1.7 in)
1948
43.2 mm (1.7 in)
1949
43.7 mm (1.7 in)
1950
43.2 mm (1.7 in)
1951
50.5 mm (2.0 in)
1952
53.3 mm (2.1 in)
1953
63.5 mm (2.5 in)
1954
56.4 mm (2.2 in)
1955
41.1 mm (1.6 in)
1956
42.2 mm (1.7 in)
1957
68.1 mm (2.7 in)
1958
42.4 mm (1.7 in)
1959
39.1 mm (1.5 in)
1960
58.9 mm (2.3 in)
1961
61.0 mm (2.4 in)
1962
43.2 mm (1.7 in)
1963
49.8 mm (2.0 in)
1964
30.7 mm (1.2 in)
1965
41.1 mm (1.6 in)
1966
40.4 mm (1.6 in)
1967
40.9 mm (1.6 in)
1968
50.8 mm (2.0 in)
1969
36.8 mm (1.4 in)
1970
60.5 mm (2.4 in)
1971
67.6 mm (2.7 in)
1972
69.1 mm (2.7 in)
1973
47.5 mm (1.9 in)
1974
37.3 mm (1.5 in)
1975
33.8 mm (1.3 in)
1976
68.1 mm (2.7 in)
1977
34.3 mm (1.4 in)
1978
55.4 mm (2.2 in)
1979
63.0 mm (2.5 in)
1980
41.4 mm (1.6 in)
1981
52.8 mm (2.1 in)
1982
106.0 mm (4.2 in)
1983
39.8 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at St Ephrem, 1929 to 1983. The record is 134.1 mm (5.3 in) in 1982, marked on the chart; the median year is 71.2 mm (2.8 in).
Wettest five days (Rx5day) at St Ephrem by year
Year
Wettest five days (Rx5day)
1929
77.0 mm (3.0 in)
1930
41.9 mm (1.6 in)
1931
50.6 mm (2.0 in)
1932
77.7 mm (3.1 in)
1933
62.9 mm (2.5 in)
1934
49.1 mm (1.9 in)
1935
26.7 mm (1.1 in)
1939
12.7 mm (0.5 in)
1942
41.6 mm (1.6 in)
1943
51.5 mm (2.0 in)
1944
16.5 mm (0.6 in)
1945
31.8 mm (1.3 in)
1946
113.0 mm (4.4 in)
1947
71.9 mm (2.8 in)
1948
61.0 mm (2.4 in)
1949
61.8 mm (2.4 in)
1950
108.2 mm (4.3 in)
1951
66.6 mm (2.6 in)
1952
67.5 mm (2.7 in)
1953
91.2 mm (3.6 in)
1954
71.2 mm (2.8 in)
1955
71.1 mm (2.8 in)
1956
72.9 mm (2.9 in)
1957
68.1 mm (2.7 in)
1958
75.6 mm (3.0 in)
1959
68.0 mm (2.7 in)
1960
80.0 mm (3.1 in)
1961
89.2 mm (3.5 in)
1962
55.2 mm (2.2 in)
1963
68.1 mm (2.7 in)
1964
73.2 mm (2.9 in)
1965
91.4 mm (3.6 in)
1966
66.3 mm (2.6 in)
1967
58.6 mm (2.3 in)
1968
67.3 mm (2.6 in)
1969
72.5 mm (2.9 in)
1970
79.1 mm (3.1 in)
1971
84.7 mm (3.3 in)
1972
113.0 mm (4.4 in)
1973
67.6 mm (2.7 in)
1974
76.4 mm (3.0 in)
1975
52.4 mm (2.1 in)
1976
90.1 mm (3.5 in)
1977
80.1 mm (3.2 in)
1978
59.2 mm (2.3 in)
1979
85.3 mm (3.4 in)
1980
72.0 mm (2.8 in)
1981
93.0 mm (3.7 in)
1982
134.1 mm (5.3 in)
1983
81.4 mm (3.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at St Ephrem, 1929 to 1983. The record is 33 days in 1939, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at St Ephrem by year
Year
Longest dry spell (CDD)
1929
14 days
1930
27 days
1931
25 days
1932
21 days
1933
23 days
1934
26 days
1935
17 days
1939
33 days
1942
11 days
1943
11 days
1944
10 days
1945
8 days
1946
14 days
1947
11 days
1948
15 days
1949
12 days
1950
11 days
1951
16 days
1952
12 days
1953
17 days
1954
10 days
1955
17 days
1956
16 days
1957
16 days
1958
9 days
1959
12 days
1960
9 days
1961
13 days
1962
15 days
1963
17 days
1964
15 days
1965
17 days
1966
26 days
1967
12 days
1968
11 days
1969
14 days
1970
27 days
1971
13 days
1972
11 days
1973
14 days
1974
12 days
1975
16 days
1976
11 days
1977
15 days
1978
16 days
1979
20 days
1980
16 days
1981
10 days
1982
11 days
1983
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
32 years with a frost
Across 32 years with a frost, the median last spring frost at St Ephrem falls on 24 May and the median first autumn frost on 15 September, which leaves a median of 112 days between them.
Fitted over all years, the growing season changes by -2.5 days per decade at this station.
Frost dates and growing season at St Ephrem
Measure
Median, all years
Earliest period
Recent period (1932 to 1983)
Recent against earliest
Fitted trend
Last spring frost
24 May
n/a
25 May
n/a
+2.1 days per decade
First autumn frost
15 September
n/a
15 September
n/a
-0.4 days per decade
Growing days
112 days
n/a
111 days
n/a
-2.5 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
35 years, 1933 to 1983
A day with at least 45.6 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 105.8 mm (4.2 in) of rain is expected about once in 100 years.
Rainfall return levels at St Ephrem: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.6 mm (1.8 in)
5 years
57.8 mm (2.3 in)
10 years
67.2 mm (2.6 in)
25 years
81.0 mm (3.2 in)
50 years
92.7 mm (3.6 in)
Longer than the 35 years of record
100 years
105.8 mm (4.2 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 1933 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: 106.0 mm (4.2 in) in 1982; 69.1 mm (2.7 in) in 1972; 68.1 mm (2.7 in) in 1957.
Download the Data
Data for St Ephrem standing records by year: CSV or JSON. Field meanings are on the data page.
Data for St Ephrem 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.