Record envelope, standing records and threshold days for St James Wwtp (USC00217326), Minnesota, United States, with 87 years of record.
Key Facts for St James Wwtp
St James Wwtp (USC00217326) is a weather station in Minnesota, United States at 43.99 latitude and -94.61 longitude, 326 m (1,070 ft) above sea level.
The station reports from 1940 to 2026, 87 years of record.
1,464 records set at St James Wwtp still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
St James Wwtp set a daily record precipitation of 36.8 mm (1.4 in) on 31 July 2026.
About the Station
Location: Minnesota, United States, 43.99 latitude, -94.61 longitude.
Elevation: 326 m (1,070 ft).
Period of record: 1940 to 2026, 87 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 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 St James Wwtp. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at St James Wwtp, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-34.4 C (-29.9 F)
8.3 C (46.9 F)
-28.3 C (-18.9 F)
Feb
19.4 C (66.9 F)
-34.4 C (-29.9 F)
15.0 C (59.0 F)
-20.0 C (-4.0 F)
Mar
29.4 C (84.9 F)
-32.2 C (-26.0 F)
28.9 C (84.0 F)
-18.3 C (-0.9 F)
Apr
33.9 C (93.0 F)
-14.4 C (6.1 F)
30.6 C (87.1 F)
-9.4 C (15.1 F)
May
38.9 C (102.0 F)
-7.2 C (19.0 F)
32.8 C (91.0 F)
0.0 C (32.0 F)
Jun
40.0 C (104.0 F)
2.2 C (36.0 F)
32.8 C (91.0 F)
11.1 C (52.0 F)
Jul
40.6 C (105.1 F)
4.4 C (39.9 F)
35.0 C (95.0 F)
10.0 C (50.0 F)
Aug
38.3 C (100.9 F)
2.2 C (36.0 F)
31.7 C (89.1 F)
10.0 C (50.0 F)
Sep
36.7 C (98.1 F)
-3.9 C (25.0 F)
30.0 C (86.0 F)
10.6 C (51.1 F)
Oct
33.3 C (91.9 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at St James Wwtp still stand. 2000 holds the most, with 44.
Standing records at St James Wwtp by the year they were set
Year set
Standing records
1958
16
1959
34
1960
23
1961
10
1962
30
1963
23
1964
28
1965
35
1966
25
1967
24
1968
23
1969
17
1970
17
1971
16
1972
27
1973
9
1974
20
1975
17
1976
27
1977
23
1978
20
1979
22
1980
10
1981
17
1982
8
1983
40
1984
16
1985
35
1986
15
1987
23
1988
40
1989
21
1990
17
1991
36
1992
23
1993
14
1994
20
1995
20
1996
27
1997
25
1998
20
1999
16
2000
44
2001
24
2002
18
2003
14
2004
24
2005
12
2006
9
2007
14
2008
6
2009
21
2010
10
2011
18
2012
41
2013
26
2014
15
2015
19
2016
9
2017
31
2018
26
2019
13
2020
28
2021
34
2022
13
2023
26
2024
17
2025
13
2026
10
All-Time Record Progression
5 new records
5 all-time records were set at St James Wwtp between 4 March 1979 and 23 September 2010. Each dot is a new record.
When St James Wwtp set new all-time records
Date
Kind
Detail
1979-03-04
Record snow depth
Record snow depth 111.8 cm (44.0 in)
1988-01-19
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
1988-06-21
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
1988-07-31
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
2010-09-23
Record daily precipitation
Record daily precipitation 190.5 mm (7.5 in)
Wettest Day of Each Month
Sep: 190.5 mm (7.5 in)
The wettest day on record for each calendar month at St James Wwtp. The most was 190.5 mm (7.5 in) on 23 September 2010.
Record daily precipitation for each month at St James Wwtp
Month
Record daily precipitation (mm)
Date
Jan
63.5 mm (2.5 in)
12 January 1988
Feb
41.1 mm (1.6 in)
29 February 2012
Mar
49.5 mm (1.9 in)
9 March 1992
Apr
58.9 mm (2.3 in)
2 April 1967
May
109.7 mm (4.3 in)
25 May 1953
Jun
154.9 mm (6.1 in)
8 June 1953
Jul
94.0 mm (3.7 in)
26 July 2020
Aug
121.9 mm (4.8 in)
20 August 2007
Sep
190.5 mm (7.5 in)
23 September 2010
Oct
69.1 mm (2.7 in)
1 October 2021
Nov
75.4 mm (3.0 in)
20 November 1973
Dec
82.6 mm (3.3 in)
30 December 1997
Period of Record Coverage
1958 to 2026
Complete yearUnder 90 percent of days
69 years of record at St James Wwtp, 1958 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1958, 1961, 1962, 1984, 1985, 1986, 1987, 1988 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at St James Wwtp, 1959 to 2025. Blue stripes are years cooler than the station's own mean of 7.4 C (45.4 F); red stripes are warmer. The coolest year was 1996, at 5.2 C (41.3 F), and the warmest was 2012, at 10.3 C (50.5 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at St James Wwtp as warming stripes, 1959 to 2025
Year
Annual mean temperature
Difference from the station mean
1959
8.1 C
+0.66 C
1960
7.6 C
+0.15 C
1965
7.0 C
-0.46 C
1966
6.9 C
-0.51 C
1967
7.4 C
-0.05 C
1968
8.1 C
+0.71 C
1969
6.9 C
-0.51 C
1970
7.0 C
-0.39 C
1971
7.5 C
+0.10 C
1972
6.3 C
-1.08 C
1973
8.8 C
+1.37 C
1974
7.9 C
+0.44 C
1975
7.5 C
+0.08 C
1976
8.3 C
+0.91 C
1977
8.2 C
+0.75 C
1978
6.5 C
-0.88 C
1979
5.6 C
-1.87 C
1980
7.8 C
+0.34 C
1982
7.2 C
-0.25 C
1983
8.0 C
+0.54 C
1990
8.5 C
+1.05 C
1991
7.6 C
+0.17 C
1992
7.2 C
-0.23 C
1993
5.8 C
-1.62 C
1994
7.0 C
-0.46 C
1996
5.2 C
-2.27 C
1997
6.7 C
-0.71 C
1999
8.3 C
+0.92 C
2000
7.3 C
-0.16 C
2001
7.5 C
+0.06 C
2002
7.1 C
-0.34 C
2003
6.8 C
-0.60 C
2004
6.9 C
-0.55 C
2007
7.5 C
+0.03 C
2008
5.9 C
-1.49 C
2009
6.2 C
-1.18 C
2011
7.6 C
+0.17 C
2012
10.3 C
+2.87 C
2013
6.7 C
-0.69 C
2014
5.9 C
-1.53 C
2015
8.2 C
+0.74 C
2016
9.2 C
+1.75 C
2017
8.3 C
+0.85 C
2018
6.4 C
-1.07 C
2019
6.2 C
-1.20 C
2020
8.2 C
+0.80 C
2021
9.1 C
+1.69 C
2022
7.2 C
-0.18 C
2023
8.1 C
+0.72 C
2024
9.2 C
+1.79 C
2025
8.1 C
+0.64 C
The fitted trend in annual mean temperature here over 1959 to 2025 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.4) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at St James Wwtp
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1959 to 2025
51
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.19 to 0.16) per decade
-0.03 F (-0.34 to 0.28) per decade
1959 to 2025
51
Not clearly different from zero
Mean daily minimum
0.13 C (0.00 to 0.27) per decade
0.24 F (0.00 to 0.48) per decade
1959 to 2025
51
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
1940 to 2026
Yearly extremes at St James Wwtp: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1988
36.1 C (97.0 F)
69
Coldest night (TNn)
-34.4 C (-29.9 F)
1970
-28.9 C (-20.0 F)
69
Wettest day (Rx1day)
190.5 mm (7.5 in)
2010
61.2 mm (2.4 in)
87
Wettest five days (Rx5day)
275.8 mm (10.9 in)
2010
91.5 mm (3.6 in)
87
Longest dry spell (CDD)
66 days
1968
27 days
87
Hottest day (TXx)
The hottest day of the year at St James Wwtp, 1940 to 2026. The record is 40.6 C (105.1 F) in 1988, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at St James Wwtp by year
Year
Hottest day (TXx)
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
35.0 C (95.0 F)
1959
37.2 C (99.0 F)
1960
33.9 C (93.0 F)
1961
35.0 C (95.0 F)
1962
33.3 C (91.9 F)
1963
36.1 C (97.0 F)
1964
36.7 C (98.1 F)
1965
37.8 C (100.0 F)
1966
37.8 C (100.0 F)
1967
35.6 C (96.1 F)
1968
35.6 C (96.1 F)
1969
34.4 C (93.9 F)
1970
37.8 C (100.0 F)
1971
36.1 C (97.0 F)
1972
35.6 C (96.1 F)
1973
36.7 C (98.1 F)
1974
37.2 C (99.0 F)
1975
35.6 C (96.1 F)
1976
38.3 C (100.9 F)
1977
36.1 C (97.0 F)
1978
36.1 C (97.0 F)
1979
37.8 C (100.0 F)
1980
36.1 C (97.0 F)
1981
35.6 C (96.1 F)
1982
36.7 C (98.1 F)
1983
37.8 C (100.0 F)
1984
36.1 C (97.0 F)
1985
38.9 C (102.0 F)
1986
35.0 C (95.0 F)
1987
37.8 C (100.0 F)
1988
40.6 C (105.1 F)
1989
40.0 C (104.0 F)
1990
38.9 C (102.0 F)
1991
37.2 C (99.0 F)
1992
32.8 C (91.0 F)
1993
32.8 C (91.0 F)
1994
34.4 C (93.9 F)
1995
39.4 C (102.9 F)
1996
35.6 C (96.1 F)
1997
33.3 C (91.9 F)
1998
35.6 C (96.1 F)
1999
36.7 C (98.1 F)
2000
36.7 C (98.1 F)
2001
36.1 C (97.0 F)
2002
37.2 C (99.0 F)
2003
35.0 C (95.0 F)
2004
35.0 C (95.0 F)
2005
35.0 C (95.0 F)
2006
35.6 C (96.1 F)
2007
36.7 C (98.1 F)
2008
33.3 C (91.9 F)
2009
35.6 C (96.1 F)
2010
34.4 C (93.9 F)
2011
38.3 C (100.9 F)
2012
37.2 C (99.0 F)
2013
38.9 C (102.0 F)
2014
32.2 C (90.0 F)
2015
34.4 C (93.9 F)
2016
36.1 C (97.0 F)
2017
35.0 C (95.0 F)
2018
38.3 C (100.9 F)
2019
35.0 C (95.0 F)
2020
37.2 C (99.0 F)
2021
37.2 C (99.0 F)
2022
38.9 C (102.0 F)
2023
36.7 C (98.1 F)
2024
33.3 C (91.9 F)
2025
36.7 C (98.1 F)
2026
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at St James Wwtp, 1940 to 2026. The record is -34.4 C (-29.9 F) in 1970, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at St James Wwtp by year
Year
Coldest night (TNn)
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
-25.6 C (-14.1 F)
1959
-26.7 C (-16.1 F)
1960
-27.8 C (-18.0 F)
1961
-28.9 C (-20.0 F)
1962
-32.2 C (-26.0 F)
1963
-32.8 C (-27.0 F)
1964
-25.6 C (-14.1 F)
1965
-31.1 C (-24.0 F)
1966
-32.2 C (-26.0 F)
1967
-31.7 C (-25.1 F)
1968
-28.3 C (-18.9 F)
1969
-26.7 C (-16.1 F)
1970
-34.4 C (-29.9 F)
1971
-27.8 C (-18.0 F)
1972
-32.8 C (-27.0 F)
1973
-28.9 C (-20.0 F)
1974
-33.9 C (-29.0 F)
1975
-27.2 C (-17.0 F)
1976
-29.4 C (-20.9 F)
1977
-32.8 C (-27.0 F)
1978
-28.9 C (-20.0 F)
1979
-32.8 C (-27.0 F)
1980
-25.6 C (-14.1 F)
1981
-30.6 C (-23.1 F)
1982
-32.8 C (-27.0 F)
1983
-32.8 C (-27.0 F)
1984
-30.0 C (-22.0 F)
1985
-31.1 C (-24.0 F)
1986
-30.6 C (-23.1 F)
1987
-26.7 C (-16.1 F)
1988
-33.3 C (-27.9 F)
1989
-30.6 C (-23.1 F)
1990
-29.4 C (-20.9 F)
1991
-24.4 C (-11.9 F)
1992
-25.6 C (-14.1 F)
1993
-28.9 C (-20.0 F)
1994
-31.7 C (-25.1 F)
1995
-26.1 C (-15.0 F)
1996
-34.4 C (-29.9 F)
1997
-27.2 C (-17.0 F)
1998
-24.4 C (-11.9 F)
1999
-27.2 C (-17.0 F)
2000
-27.8 C (-18.0 F)
2001
-25.6 C (-14.1 F)
2002
-20.0 C (-4.0 F)
2003
-25.6 C (-14.1 F)
2004
-29.4 C (-20.9 F)
2005
-26.1 C (-15.0 F)
2006
-25.0 C (-13.0 F)
2007
-25.6 C (-14.1 F)
2008
-27.8 C (-18.0 F)
2009
-30.6 C (-23.1 F)
2010
-33.9 C (-29.0 F)
2011
-28.9 C (-20.0 F)
2012
-26.1 C (-15.0 F)
2013
-26.7 C (-16.1 F)
2014
-29.4 C (-20.9 F)
2015
-26.7 C (-16.1 F)
2016
-30.6 C (-23.1 F)
2017
-28.3 C (-18.9 F)
2018
-28.9 C (-20.0 F)
2019
-33.9 C (-29.0 F)
2020
-28.3 C (-18.9 F)
2021
-30.6 C (-23.1 F)
2022
-29.4 C (-20.9 F)
2023
-25.6 C (-14.1 F)
2024
-25.6 C (-14.1 F)
2025
-27.8 C (-18.0 F)
2026
-28.3 C (-18.9 F)
Wettest day (Rx1day)
The wettest day of the year at St James Wwtp, 1940 to 2026. The record is 190.5 mm (7.5 in) in 2010, marked on the chart; the median year is 61.2 mm (2.4 in).
Wettest day (Rx1day) at St James Wwtp by year
Year
Wettest day (Rx1day)
1940
67.3 mm (2.6 in)
1941
108.0 mm (4.3 in)
1942
63.5 mm (2.5 in)
1943
73.7 mm (2.9 in)
1944
46.2 mm (1.8 in)
1945
78.7 mm (3.1 in)
1946
67.3 mm (2.6 in)
1947
34.3 mm (1.4 in)
1948
54.6 mm (2.1 in)
1949
38.1 mm (1.5 in)
1950
57.9 mm (2.3 in)
1951
61.2 mm (2.4 in)
1952
36.6 mm (1.4 in)
1953
154.9 mm (6.1 in)
1954
64.0 mm (2.5 in)
1955
39.4 mm (1.6 in)
1956
47.0 mm (1.9 in)
1957
105.9 mm (4.2 in)
1958
70.4 mm (2.8 in)
1959
68.8 mm (2.7 in)
1960
79.2 mm (3.1 in)
1961
48.0 mm (1.9 in)
1962
55.4 mm (2.2 in)
1963
61.7 mm (2.4 in)
1964
70.4 mm (2.8 in)
1965
54.4 mm (2.1 in)
1966
69.3 mm (2.7 in)
1967
61.2 mm (2.4 in)
1968
61.7 mm (2.4 in)
1969
62.7 mm (2.5 in)
1970
63.5 mm (2.5 in)
1971
50.8 mm (2.0 in)
1972
32.0 mm (1.3 in)
1973
75.4 mm (3.0 in)
1974
44.5 mm (1.8 in)
1975
57.9 mm (2.3 in)
1976
49.8 mm (2.0 in)
1977
83.1 mm (3.3 in)
1978
32.0 mm (1.3 in)
1979
59.2 mm (2.3 in)
1980
68.6 mm (2.7 in)
1981
66.8 mm (2.6 in)
1982
58.9 mm (2.3 in)
1983
44.5 mm (1.8 in)
1984
46.7 mm (1.8 in)
1985
54.6 mm (2.1 in)
1986
114.3 mm (4.5 in)
1987
32.0 mm (1.3 in)
1988
63.5 mm (2.5 in)
1989
51.8 mm (2.0 in)
1990
44.2 mm (1.7 in)
1991
63.8 mm (2.5 in)
1992
74.2 mm (2.9 in)
1993
54.1 mm (2.1 in)
1994
97.3 mm (3.8 in)
1995
42.9 mm (1.7 in)
1996
122.9 mm (4.8 in)
1997
82.6 mm (3.3 in)
1998
45.2 mm (1.8 in)
1999
46.5 mm (1.8 in)
2000
48.3 mm (1.9 in)
2001
54.1 mm (2.1 in)
2002
41.9 mm (1.6 in)
2003
50.8 mm (2.0 in)
2004
86.4 mm (3.4 in)
2005
109.0 mm (4.3 in)
2006
77.0 mm (3.0 in)
2007
121.9 mm (4.8 in)
2008
53.3 mm (2.1 in)
2009
68.6 mm (2.7 in)
2010
190.5 mm (7.5 in)
2011
47.0 mm (1.9 in)
2012
76.5 mm (3.0 in)
2013
45.0 mm (1.8 in)
2014
105.4 mm (4.1 in)
2015
52.3 mm (2.1 in)
2016
83.8 mm (3.3 in)
2017
36.6 mm (1.4 in)
2018
66.0 mm (2.6 in)
2019
52.8 mm (2.1 in)
2020
94.0 mm (3.7 in)
2021
69.1 mm (2.7 in)
2022
45.7 mm (1.8 in)
2023
66.5 mm (2.6 in)
2024
101.3 mm (4.0 in)
2025
51.6 mm (2.0 in)
2026
41.9 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at St James Wwtp, 1940 to 2026. The record is 275.8 mm (10.9 in) in 2010, marked on the chart; the median year is 91.5 mm (3.6 in).
Wettest five days (Rx5day) at St James Wwtp by year
Year
Wettest five days (Rx5day)
1940
96.0 mm (3.8 in)
1941
133.4 mm (5.3 in)
1942
83.8 mm (3.3 in)
1943
81.9 mm (3.2 in)
1944
107.7 mm (4.2 in)
1945
78.7 mm (3.1 in)
1946
142.2 mm (5.6 in)
1947
47.2 mm (1.9 in)
1948
72.6 mm (2.9 in)
1949
91.5 mm (3.6 in)
1950
57.9 mm (2.3 in)
1951
99.6 mm (3.9 in)
1952
74.0 mm (2.9 in)
1953
156.9 mm (6.2 in)
1954
96.7 mm (3.8 in)
1955
61.1 mm (2.4 in)
1956
95.0 mm (3.7 in)
1957
118.1 mm (4.6 in)
1958
74.2 mm (2.9 in)
1959
87.6 mm (3.4 in)
1960
96.5 mm (3.8 in)
1961
77.7 mm (3.1 in)
1962
92.5 mm (3.6 in)
1963
126.2 mm (5.0 in)
1964
118.6 mm (4.7 in)
1965
71.1 mm (2.8 in)
1966
81.7 mm (3.2 in)
1967
98.3 mm (3.9 in)
1968
103.6 mm (4.1 in)
1969
64.5 mm (2.5 in)
1970
103.4 mm (4.1 in)
1971
77.8 mm (3.1 in)
1972
57.7 mm (2.3 in)
1973
79.4 mm (3.1 in)
1974
97.3 mm (3.8 in)
1975
74.9 mm (2.9 in)
1976
49.8 mm (2.0 in)
1977
105.2 mm (4.1 in)
1978
66.5 mm (2.6 in)
1979
70.6 mm (2.8 in)
1980
116.6 mm (4.6 in)
1981
122.6 mm (4.8 in)
1982
90.2 mm (3.6 in)
1983
62.5 mm (2.5 in)
1984
80.5 mm (3.2 in)
1985
82.6 mm (3.3 in)
1986
132.6 mm (5.2 in)
1987
63.3 mm (2.5 in)
1988
63.5 mm (2.5 in)
1989
61.4 mm (2.4 in)
1990
76.5 mm (3.0 in)
1991
114.5 mm (4.5 in)
1992
78.5 mm (3.1 in)
1993
143.3 mm (5.6 in)
1994
99.1 mm (3.9 in)
1995
96.0 mm (3.8 in)
1996
136.6 mm (5.4 in)
1997
106.9 mm (4.2 in)
1998
108.0 mm (4.3 in)
1999
71.9 mm (2.8 in)
2000
74.7 mm (2.9 in)
2001
126.0 mm (5.0 in)
2002
71.4 mm (2.8 in)
2003
67.1 mm (2.6 in)
2004
121.5 mm (4.8 in)
2005
119.2 mm (4.7 in)
2006
86.6 mm (3.4 in)
2007
200.6 mm (7.9 in)
2008
71.4 mm (2.8 in)
2009
102.8 mm (4.0 in)
2010
275.8 mm (10.9 in)
2011
71.6 mm (2.8 in)
2012
135.9 mm (5.4 in)
2013
77.8 mm (3.1 in)
2014
149.6 mm (5.9 in)
2015
77.2 mm (3.0 in)
2016
135.2 mm (5.3 in)
2017
98.5 mm (3.9 in)
2018
129.8 mm (5.1 in)
2019
98.3 mm (3.9 in)
2020
106.2 mm (4.2 in)
2021
81.1 mm (3.2 in)
2022
62.2 mm (2.4 in)
2023
146.3 mm (5.8 in)
2024
228.6 mm (9.0 in)
2025
73.1 mm (2.9 in)
2026
86.1 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at St James Wwtp, 1940 to 2026. The record is 66 days in 1968, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at St James Wwtp by year
Year
Longest dry spell (CDD)
1940
17 days
1941
21 days
1942
34 days
1943
52 days
1944
40 days
1945
21 days
1946
31 days
1947
27 days
1948
37 days
1949
33 days
1950
30 days
1951
22 days
1952
59 days
1953
32 days
1954
50 days
1955
28 days
1956
25 days
1957
32 days
1958
44 days
1959
27 days
1960
30 days
1961
31 days
1962
50 days
1963
37 days
1964
29 days
1965
21 days
1966
24 days
1967
32 days
1968
66 days
1969
19 days
1970
23 days
1971
30 days
1972
17 days
1973
24 days
1974
31 days
1975
22 days
1976
43 days
1977
18 days
1978
33 days
1979
24 days
1980
33 days
1981
25 days
1982
37 days
1983
22 days
1984
16 days
1985
32 days
1986
24 days
1987
48 days
1988
44 days
1989
52 days
1990
45 days
1991
34 days
1992
18 days
1993
19 days
1994
25 days
1995
17 days
1996
16 days
1997
18 days
1998
28 days
1999
22 days
2000
16 days
2001
28 days
2002
18 days
2003
22 days
2004
25 days
2005
23 days
2006
21 days
2007
36 days
2008
40 days
2009
27 days
2010
27 days
2011
32 days
2012
24 days
2013
22 days
2014
19 days
2015
27 days
2016
24 days
2017
25 days
2018
23 days
2019
21 days
2020
40 days
2021
19 days
2022
29 days
2023
50 days
2024
37 days
2025
41 days
2026
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
51 years with a frost
Across 51 years with a frost, the median last spring frost at St James Wwtp falls on 29 April and the median first autumn frost on 6 October, which leaves a median of 159 days between them.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
Frost dates and growing season at St James Wwtp
Measure
Median, all years
Earliest period
Recent period (1991 to 2025)
Recent against earliest
Fitted trend
Last spring frost
29 April
n/a
27 April
n/a
-0.9 days per decade
First autumn frost
6 October
n/a
6 October
n/a
+0.4 days per decade
Growing days
159 days
n/a
159 days
n/a
+1.3 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
72 years, 1941 to 2025
A day with at least 58.2 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 161.7 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at St James Wwtp: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
58.2 mm (2.3 in)
5 years
78.8 mm (3.1 in)
10 years
94.9 mm (3.7 in)
25 years
118.5 mm (4.7 in)
50 years
138.9 mm (5.5 in)
100 years
161.7 mm (6.4 in)
Longer than the 72 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, 72 years of values from 1941 to 2025.
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: 190.5 mm (7.5 in) in 2010; 154.9 mm (6.1 in) in 1953; 121.9 mm (4.8 in) in 2007.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990
Over 2011 to 2025, St James Wwtp had a mean temperature of 7.9 C (46.2 F) and 846.2 mm (33.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Hampton (United States, 178 km away), Alma Dam 4 (United States, 218 km away) and Waterloo Muni AP (United States, 240 km away).
Climate twins of St James Wwtp: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for St James Wwtp standing records by year: CSV or JSON. Field meanings are on the data page.
Data for St James Wwtp 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.