Record envelope, standing records and threshold days for Collegeville (CA008201000), Nova Scotia, Canada, with 98 years of record.
Key Facts for Collegeville
Collegeville (CA008201000) is a weather station in Nova Scotia, Canada at 45.48 latitude and -62.02 longitude, 76 m (249 ft) above sea level.
The station reports from 1916 to 2013, 98 years of record.
1,464 records set at Collegeville still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Collegeville set a daily record low maximum temperature of -10.0 C (14.0 F) on 25 December 1983.
About the Station
Location: Nova Scotia, Canada, 45.48 latitude, -62.02 longitude.
Elevation: 76 m (249 ft).
Period of record: 1916 to 2013, 98 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 Collegeville. 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 Collegeville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Feb
13.9 C (57.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Apr
27.8 C (82.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
28.3 C (82.9 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Collegeville still stand. 1979 holds the most, with 42.
Standing records at Collegeville by the year they were set
Year set
Standing records
1916
26
1917
21
1918
31
1919
20
1920
30
1921
35
1922
18
1923
28
1924
10
1925
22
1926
16
1927
16
1928
13
1929
14
1930
20
1931
15
1932
13
1933
27
1934
26
1935
21
1936
24
1937
34
1938
28
1939
27
1940
18
1941
27
1942
30
1943
19
1944
7
1945
31
1946
20
1949
25
1950
23
1951
24
1952
11
1953
22
1954
22
1955
25
1956
26
1957
28
1958
17
1959
15
1960
13
1961
27
1962
19
1963
20
1964
15
1965
22
1966
22
1967
26
1968
14
1969
26
1970
18
1971
17
1972
27
1973
29
1974
14
1975
26
1976
41
1977
22
1978
15
1979
42
1980
21
1981
24
1982
23
1983
16
All-Time Record Progression
5 new records
5 all-time records were set at Collegeville between 13 February 1954 and 23 February 1972. Each dot is a new record.
When Collegeville set new all-time records
Date
Kind
Detail
1954-02-13
Record low maximum temperature
Record low maximum temperature -20.6 C (-5.1 F)
1968-01-11
Record low maximum temperature
Record low maximum temperature -21.1 C (-6.0 F)
1968-08-30
Record daily precipitation
Record daily precipitation 136.4 mm (5.4 in)
1971-08-15
Record daily precipitation
Record daily precipitation 203.2 mm (8.0 in)
1972-02-23
Record low maximum temperature
Record low maximum temperature -21.7 C (-7.1 F)
Wettest Day of Each Month
Aug: 203.2 mm (8.0 in)
The wettest day on record for each calendar month at Collegeville. The most was 203.2 mm (8.0 in) on 15 August 1971.
Record daily precipitation for each month at Collegeville
Month
Record daily precipitation (mm)
Date
Jan
87.6 mm (3.4 in)
6 January 1956
Feb
61.0 mm (2.4 in)
28 February 1952
Mar
78.7 mm (3.1 in)
9 March 1940
Apr
53.3 mm (2.1 in)
27 April 1941
May
54.6 mm (2.1 in)
28 May 1940
Jun
101.6 mm (4.0 in)
20 June 1940
Jul
104.1 mm (4.1 in)
11 July 1970
Aug
203.2 mm (8.0 in)
15 August 1971
Sep
104.1 mm (4.1 in)
16 September 1940
Oct
115.1 mm (4.5 in)
15 October 1978
Nov
98.6 mm (3.9 in)
21 November 1937
Dec
69.9 mm (2.8 in)
10 December 1975
Period of Record Coverage
1916 to 1983
Complete yearUnder 90 percent of days
67 years of record at Collegeville, 1916 to 1983. 7 years have data for under 90 percent of days and are left out of rankings: 1916, 1944, 1945, 1946, 1948, 1958, 1962.
Cooler than the station meanWarmer than the station mean
One stripe for each of 54 complete years at Collegeville, 1918 to 1983. Blue stripes are years cooler than the station's own mean of 5.8 C (42.4 F); red stripes are warmer. The coolest year was 1972, at 4.5 C (40.0 F), and the warmest was 1937, at 7.4 C (45.4 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Collegeville as warming stripes, 1918 to 1983
Year
Annual mean temperature
Difference from the station mean
1918
4.6 C
-1.22 C
1919
5.6 C
-0.19 C
1921
5.6 C
-0.19 C
1922
5.2 C
-0.54 C
1923
4.7 C
-1.05 C
1924
5.5 C
-0.28 C
1925
5.6 C
-0.16 C
1926
4.8 C
-0.98 C
1927
6.3 C
+0.48 C
1928
5.8 C
+0.01 C
1929
5.2 C
-0.61 C
1930
6.0 C
+0.26 C
1931
6.5 C
+0.70 C
1932
5.9 C
+0.17 C
1933
5.5 C
-0.27 C
1934
5.6 C
-0.13 C
1935
5.7 C
-0.10 C
1936
6.4 C
+0.67 C
1937
7.4 C
+1.65 C
1938
6.3 C
+0.51 C
1939
6.0 C
+0.21 C
1940
6.0 C
+0.27 C
1941
7.1 C
+1.37 C
1942
6.7 C
+0.88 C
1943
6.3 C
+0.49 C
1951
7.1 C
+1.35 C
1952
6.3 C
+0.50 C
1953
6.6 C
+0.86 C
1954
5.3 C
-0.47 C
1956
5.3 C
-0.51 C
1957
5.6 C
-0.18 C
1959
5.1 C
-0.69 C
1960
6.1 C
+0.33 C
1961
5.8 C
+0.03 C
1963
5.1 C
-0.64 C
1964
5.1 C
-0.66 C
1965
4.7 C
-1.11 C
1966
6.3 C
+0.54 C
1967
5.3 C
-0.52 C
1968
5.5 C
-0.31 C
1969
6.5 C
+0.73 C
1970
5.3 C
-0.50 C
1971
5.6 C
-0.15 C
1972
4.5 C
-1.31 C
1973
5.7 C
-0.06 C
1974
5.0 C
-0.79 C
1976
6.0 C
+0.25 C
1977
6.0 C
+0.27 C
1978
5.1 C
-0.72 C
1979
6.6 C
+0.85 C
1980
4.8 C
-0.96 C
1981
6.6 C
+0.84 C
1982
5.5 C
-0.27 C
1983
6.9 C
+1.08 C
The fitted trend in annual mean temperature here over 1918 to 1983 is 0.00 C (-0.09 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.00 F (-0.17 to 0.17) per decade. The slope is a straight line fitted to 54 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Collegeville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.00 C (-0.09 to 0.10) per decade
0.00 F (-0.17 to 0.17) per decade
1918 to 1983
54
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.5 to -0.1) per decade
1918 to 1983
54
Fall
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1918 to 1983
54
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
1916 to 1983
Yearly extremes at Collegeville: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1935
32.2 C (90.0 F)
67
Coldest night (TNn)
-37.2 C (-35.0 F)
1934
-28.0 C (-18.4 F)
67
Wettest day (Rx1day)
203.2 mm (8.0 in)
1971
58.2 mm (2.3 in)
67
Wettest five days (Rx5day)
249.9 mm (9.8 in)
1971
92.7 mm (3.6 in)
67
Longest dry spell (CDD)
45 days
1940
16 days
67
Hottest day (TXx)
The hottest day of the year at Collegeville, 1916 to 1983. The record is 38.3 C (100.9 F) in 1935, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Collegeville by year
Year
Hottest day (TXx)
1916
32.2 C (90.0 F)
1917
32.8 C (91.0 F)
1918
32.8 C (91.0 F)
1919
32.2 C (90.0 F)
1920
34.4 C (93.9 F)
1921
35.0 C (95.0 F)
1922
33.9 C (93.0 F)
1923
31.1 C (88.0 F)
1924
32.2 C (90.0 F)
1925
32.8 C (91.0 F)
1926
32.2 C (90.0 F)
1927
30.0 C (86.0 F)
1928
32.8 C (91.0 F)
1929
32.2 C (90.0 F)
1930
33.9 C (93.0 F)
1931
30.6 C (87.1 F)
1932
33.9 C (93.0 F)
1933
32.2 C (90.0 F)
1934
30.6 C (87.1 F)
1935
38.3 C (100.9 F)
1936
29.4 C (84.9 F)
1937
33.3 C (91.9 F)
1938
35.0 C (95.0 F)
1939
32.8 C (91.0 F)
1940
33.3 C (91.9 F)
1941
33.3 C (91.9 F)
1942
35.0 C (95.0 F)
1943
33.9 C (93.0 F)
1944
32.2 C (90.0 F)
1945
36.1 C (97.0 F)
1946
33.9 C (93.0 F)
1948
17.8 C (64.0 F)
1949
35.6 C (96.1 F)
1950
29.4 C (84.9 F)
1951
29.4 C (84.9 F)
1952
32.2 C (90.0 F)
1953
30.0 C (86.0 F)
1954
30.6 C (87.1 F)
1955
32.8 C (91.0 F)
1956
30.6 C (87.1 F)
1957
30.0 C (86.0 F)
1958
28.3 C (82.9 F)
1959
32.2 C (90.0 F)
1960
33.3 C (91.9 F)
1961
31.7 C (89.1 F)
1962
32.2 C (90.0 F)
1963
33.9 C (93.0 F)
1964
29.4 C (84.9 F)
1965
31.7 C (89.1 F)
1966
31.1 C (88.0 F)
1967
31.7 C (89.1 F)
1968
31.7 C (89.1 F)
1969
31.7 C (89.1 F)
1970
32.2 C (90.0 F)
1971
31.7 C (89.1 F)
1972
31.7 C (89.1 F)
1973
30.6 C (87.1 F)
1974
30.0 C (86.0 F)
1975
35.6 C (96.1 F)
1976
34.4 C (93.9 F)
1977
32.8 C (91.0 F)
1978
32.2 C (90.0 F)
1979
31.0 C (87.8 F)
1980
32.0 C (89.6 F)
1981
30.5 C (86.9 F)
1982
32.0 C (89.6 F)
1983
30.0 C (86.0 F)
Coldest night (TNn)
The coldest night of the year at Collegeville, 1916 to 1983. The record is -37.2 C (-35.0 F) in 1934, marked on the chart; the median year is -28.0 C (-18.4 F).
Coldest night (TNn) at Collegeville by year
Year
Coldest night (TNn)
1916
-17.2 C (1.0 F)
1917
-34.4 C (-29.9 F)
1918
-30.0 C (-22.0 F)
1919
-29.4 C (-20.9 F)
1920
-31.1 C (-24.0 F)
1921
-30.6 C (-23.1 F)
1922
-33.3 C (-27.9 F)
1923
-30.0 C (-22.0 F)
1924
-27.8 C (-18.0 F)
1925
-34.4 C (-29.9 F)
1926
-30.0 C (-22.0 F)
1927
-25.0 C (-13.0 F)
1928
-26.7 C (-16.1 F)
1929
-28.9 C (-20.0 F)
1930
-28.3 C (-18.9 F)
1931
-23.9 C (-11.0 F)
1932
-27.8 C (-18.0 F)
1933
-28.3 C (-18.9 F)
1934
-37.2 C (-35.0 F)
1935
-31.7 C (-25.1 F)
1936
-26.1 C (-15.0 F)
1937
-27.8 C (-18.0 F)
1938
-30.6 C (-23.1 F)
1939
-26.7 C (-16.1 F)
1940
-28.3 C (-18.9 F)
1941
-23.3 C (-9.9 F)
1942
-24.4 C (-11.9 F)
1943
-28.9 C (-20.0 F)
1944
-28.9 C (-20.0 F)
1945
-24.4 C (-11.9 F)
1946
-17.8 C (0.0 F)
1948
-16.7 C (1.9 F)
1949
-21.7 C (-7.1 F)
1950
-25.6 C (-14.1 F)
1951
-27.8 C (-18.0 F)
1952
-30.6 C (-23.1 F)
1953
-19.4 C (-2.9 F)
1954
-27.8 C (-18.0 F)
1955
-31.1 C (-24.0 F)
1956
-25.0 C (-13.0 F)
1957
-31.7 C (-25.1 F)
1958
-28.3 C (-18.9 F)
1959
-25.6 C (-14.1 F)
1960
-23.9 C (-11.0 F)
1961
-33.3 C (-27.9 F)
1962
-25.6 C (-14.1 F)
1963
-27.8 C (-18.0 F)
1964
-26.7 C (-16.1 F)
1965
-29.4 C (-20.9 F)
1966
-30.6 C (-23.1 F)
1967
-32.2 C (-26.0 F)
1968
-29.4 C (-20.9 F)
1969
-22.8 C (-9.0 F)
1970
-26.1 C (-15.0 F)
1971
-32.8 C (-27.0 F)
1972
-30.6 C (-23.1 F)
1973
-30.0 C (-22.0 F)
1974
-26.7 C (-16.1 F)
1975
-30.6 C (-23.1 F)
1976
-23.9 C (-11.0 F)
1977
-22.2 C (-8.0 F)
1978
-23.3 C (-9.9 F)
1979
-24.4 C (-11.9 F)
1980
-28.5 C (-19.3 F)
1981
-32.0 C (-25.6 F)
1982
-28.0 C (-18.4 F)
1983
-23.0 C (-9.4 F)
Wettest day (Rx1day)
The wettest day of the year at Collegeville, 1916 to 1983. The record is 203.2 mm (8.0 in) in 1971, marked on the chart; the median year is 58.2 mm (2.3 in).
Wettest day (Rx1day) at Collegeville by year
Year
Wettest day (Rx1day)
1916
46.2 mm (1.8 in)
1917
49.0 mm (1.9 in)
1918
69.9 mm (2.8 in)
1919
39.1 mm (1.5 in)
1920
43.2 mm (1.7 in)
1921
43.7 mm (1.7 in)
1922
76.2 mm (3.0 in)
1923
85.1 mm (3.4 in)
1924
81.0 mm (3.2 in)
1925
59.7 mm (2.4 in)
1926
68.8 mm (2.7 in)
1927
82.0 mm (3.2 in)
1928
57.2 mm (2.3 in)
1929
67.1 mm (2.6 in)
1930
39.9 mm (1.6 in)
1931
54.6 mm (2.1 in)
1932
50.5 mm (2.0 in)
1933
67.6 mm (2.7 in)
1934
55.4 mm (2.2 in)
1935
55.1 mm (2.2 in)
1936
82.3 mm (3.2 in)
1937
98.6 mm (3.9 in)
1938
58.4 mm (2.3 in)
1939
48.3 mm (1.9 in)
1940
104.1 mm (4.1 in)
1941
65.8 mm (2.6 in)
1942
87.4 mm (3.4 in)
1943
53.3 mm (2.1 in)
1944
58.2 mm (2.3 in)
1945
82.0 mm (3.2 in)
1946
47.2 mm (1.9 in)
1948
22.4 mm (0.9 in)
1949
53.3 mm (2.1 in)
1950
78.7 mm (3.1 in)
1951
40.6 mm (1.6 in)
1952
61.0 mm (2.4 in)
1953
63.5 mm (2.5 in)
1954
66.0 mm (2.6 in)
1955
55.9 mm (2.2 in)
1956
87.6 mm (3.4 in)
1957
56.6 mm (2.2 in)
1958
62.2 mm (2.4 in)
1959
47.0 mm (1.9 in)
1960
48.8 mm (1.9 in)
1961
53.3 mm (2.1 in)
1962
31.2 mm (1.2 in)
1963
44.5 mm (1.8 in)
1964
69.3 mm (2.7 in)
1965
50.8 mm (2.0 in)
1966
55.9 mm (2.2 in)
1967
73.4 mm (2.9 in)
1968
136.4 mm (5.4 in)
1969
67.6 mm (2.7 in)
1970
104.1 mm (4.1 in)
1971
203.2 mm (8.0 in)
1972
56.4 mm (2.2 in)
1973
94.5 mm (3.7 in)
1974
38.1 mm (1.5 in)
1975
69.9 mm (2.8 in)
1976
57.2 mm (2.3 in)
1977
72.6 mm (2.9 in)
1978
115.1 mm (4.5 in)
1979
51.0 mm (2.0 in)
1980
52.6 mm (2.1 in)
1981
55.8 mm (2.2 in)
1982
42.0 mm (1.7 in)
1983
82.4 mm (3.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Collegeville, 1916 to 1983. The record is 249.9 mm (9.8 in) in 1971, marked on the chart; the median year is 92.7 mm (3.6 in).
Wettest five days (Rx5day) at Collegeville by year
Year
Wettest five days (Rx5day)
1916
53.4 mm (2.1 in)
1917
95.2 mm (3.7 in)
1918
105.5 mm (4.2 in)
1919
68.9 mm (2.7 in)
1920
76.5 mm (3.0 in)
1921
61.0 mm (2.4 in)
1922
121.0 mm (4.8 in)
1923
111.7 mm (4.4 in)
1924
136.1 mm (5.4 in)
1925
93.0 mm (3.7 in)
1926
85.3 mm (3.4 in)
1927
115.7 mm (4.6 in)
1928
113.1 mm (4.5 in)
1929
100.1 mm (3.9 in)
1930
79.3 mm (3.1 in)
1931
58.9 mm (2.3 in)
1932
89.1 mm (3.5 in)
1933
112.3 mm (4.4 in)
1934
87.4 mm (3.4 in)
1935
102.6 mm (4.0 in)
1936
83.1 mm (3.3 in)
1937
138.0 mm (5.4 in)
1938
68.4 mm (2.7 in)
1939
92.7 mm (3.6 in)
1940
138.6 mm (5.5 in)
1941
108.7 mm (4.3 in)
1942
87.4 mm (3.4 in)
1943
80.7 mm (3.2 in)
1944
96.3 mm (3.8 in)
1945
82.0 mm (3.2 in)
1946
47.2 mm (1.9 in)
1948
27.1 mm (1.1 in)
1949
132.0 mm (5.2 in)
1950
83.3 mm (3.3 in)
1951
91.7 mm (3.6 in)
1952
78.7 mm (3.1 in)
1953
103.4 mm (4.1 in)
1954
110.3 mm (4.3 in)
1955
76.2 mm (3.0 in)
1956
170.7 mm (6.7 in)
1957
107.4 mm (4.2 in)
1958
73.2 mm (2.9 in)
1959
86.6 mm (3.4 in)
1960
61.5 mm (2.4 in)
1961
69.0 mm (2.7 in)
1962
56.9 mm (2.2 in)
1963
86.4 mm (3.4 in)
1964
99.9 mm (3.9 in)
1965
100.0 mm (3.9 in)
1966
68.6 mm (2.7 in)
1967
106.6 mm (4.2 in)
1968
212.1 mm (8.4 in)
1969
161.9 mm (6.4 in)
1970
119.6 mm (4.7 in)
1971
249.9 mm (9.8 in)
1972
77.8 mm (3.1 in)
1973
125.7 mm (4.9 in)
1974
86.4 mm (3.4 in)
1975
95.3 mm (3.8 in)
1976
92.7 mm (3.6 in)
1977
90.1 mm (3.5 in)
1978
141.7 mm (5.6 in)
1979
103.2 mm (4.1 in)
1980
82.8 mm (3.3 in)
1981
116.4 mm (4.6 in)
1982
77.2 mm (3.0 in)
1983
97.8 mm (3.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Collegeville, 1916 to 1983. The record is 45 days in 1940, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Collegeville by year
Year
Longest dry spell (CDD)
1916
9 days
1917
15 days
1918
16 days
1919
12 days
1920
19 days
1921
19 days
1922
12 days
1923
20 days
1924
15 days
1925
18 days
1926
14 days
1927
12 days
1928
10 days
1929
12 days
1930
18 days
1931
13 days
1932
15 days
1933
19 days
1934
16 days
1935
12 days
1936
28 days
1937
19 days
1938
31 days
1939
30 days
1940
45 days
1941
16 days
1942
37 days
1943
22 days
1944
17 days
1945
26 days
1946
26 days
1948
9 days
1949
17 days
1950
18 days
1951
13 days
1952
24 days
1953
15 days
1954
22 days
1955
18 days
1956
14 days
1957
24 days
1958
14 days
1959
15 days
1960
26 days
1961
15 days
1962
11 days
1963
10 days
1964
10 days
1965
12 days
1966
12 days
1967
13 days
1968
11 days
1969
20 days
1970
12 days
1971
18 days
1972
11 days
1973
15 days
1974
22 days
1975
23 days
1976
13 days
1977
13 days
1978
22 days
1979
14 days
1980
16 days
1981
19 days
1982
18 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
54 years with a frost
Across 54 years with a frost, the median last spring frost at Collegeville falls on 9 June and the median first autumn frost on 18 September, which leaves a median of 103 days between them.
Fitted over all years, the growing season changes by -1.4 days per decade at this station.
Frost dates and growing season at Collegeville
Measure
Median, all years
Earliest period
Recent period (1943 to 1983)
Recent against earliest
Fitted trend
Last spring frost
9 June
n/a
12 June
n/a
+0.9 days per decade
First autumn frost
18 September
n/a
17 September
n/a
-0.4 days per decade
Growing days
103 days
n/a
96 days
n/a
-1.4 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
55 years, 1917 to 1983
A day with at least 60.6 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 177.6 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Collegeville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
60.6 mm (2.4 in)
5 years
81.1 mm (3.2 in)
10 years
98.3 mm (3.9 in)
25 years
124.9 mm (4.9 in)
50 years
149.1 mm (5.9 in)
100 years
177.6 mm (7.0 in)
Longer than the 55 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, 55 years of values from 1917 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: 203.2 mm (8.0 in) in 1971; 136.4 mm (5.4 in) in 1968; 115.1 mm (4.5 in) in 1978.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of Collegeville, at 1935, 1951 and 1961. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1935 ran 0.6 C (1.2 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1951 ran 1.2 C (2.2 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1961 ran 0.6 C (1.0 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Collegeville, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1935
+0.6
+1.2
likely
5
1951
-1.2
-2.2
likely
5
1961
+0.6
+1.0
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Collegeville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Collegeville 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.