Record envelope, standing records and threshold days for Grandfalls 3SSE (USC00413680), Texas, United States, with 107 years of record.
Key Facts for Grandfalls 3SSE
Grandfalls 3SSE (USC00413680) is a weather station in Texas, United States at 31.30 latitude and -102.82 longitude, 739 m (2,425 ft) above sea level.
The station reports from 1909 to 2015, 107 years of record.
1,464 records set at Grandfalls 3SSE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grandfalls 3SSE set a daily record high minimum temperature of 21.7 C (71.1 F) on 7 May 2015.
About the Station
Location: Texas, United States, 31.30 latitude, -102.82 longitude.
Elevation: 739 m (2,425 ft).
Period of record: 1909 to 2015, 107 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Grandfalls 3SSE. 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 Grandfalls 3SSE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-20.0 C (-4.0 F)
n/a
n/a
Feb
34.4 C (93.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Mar
36.7 C (98.1 F)
-11.7 C (10.9 F)
n/a
n/a
Apr
40.6 C (105.1 F)
-6.1 C (21.0 F)
n/a
n/a
May
43.3 C (109.9 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
47.2 C (117.0 F)
5.0 C (41.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
8.9 C (48.0 F)
n/a
n/a
Aug
44.4 C (111.9 F)
8.9 C (48.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
1.1 C (34.0 F)
n/a
n/a
Oct
41.7 C (107.1 F)
-5.6 C (21.9 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-13.9 C (7.0 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grandfalls 3SSE still stand. 1989 holds the most, with 54.
Standing records at Grandfalls 3SSE by the year they were set
Year set
Standing records
1909
7
1940
28
1941
21
1942
35
1943
19
1944
27
1945
23
1946
33
1947
31
1948
33
1949
24
1950
8
1953
5
1954
8
1955
10
1963
1
1964
24
1965
28
1966
18
1967
28
1968
20
1969
23
1970
23
1971
26
1972
26
1973
21
1974
16
1975
21
1976
14
1977
20
1978
22
1979
31
1980
29
1981
29
1982
18
1983
20
1984
26
1985
29
1986
22
1987
25
1988
22
1989
54
1990
32
1991
14
1992
16
1993
18
1994
21
1995
21
1996
41
1997
27
1998
37
1999
10
2001
7
2002
30
2003
13
2004
14
2005
16
2006
26
2007
13
2008
12
2009
34
2010
11
2011
49
2012
24
2013
28
2015
2
All-Time Record Progression
9 new records
9 all-time records were set at Grandfalls 3SSE between 1 January 1947 and 5 June 2008. Each dot is a new record.
When Grandfalls 3SSE set new all-time records
Date
Kind
Detail
1947-01-01
Record snow depth
Record snow depth 15.2 cm (6.0 in)
1983-12-25
Record low maximum temperature
Record low maximum temperature -8.3 C (17.1 F)
1985-02-02
Record low minimum temperature
Record low minimum temperature -22.2 C (-8.0 F)
1985-02-03
Record low minimum temperature
Record low minimum temperature -22.8 C (-9.0 F)
1986-09-04
Record daily precipitation
Record daily precipitation 149.1 mm (5.9 in)
1989-06-18
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1989-07-03
Record high maximum temperature
Record high maximum temperature 46.7 C (116.1 F)
1994-06-28
Record high maximum temperature
Record high maximum temperature 47.2 C (117.0 F)
2008-06-05
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
Wettest Day of Each Month
Sep: 149.1 mm (5.9 in)
The wettest day on record for each calendar month at Grandfalls 3SSE. The most was 149.1 mm (5.9 in) on 4 September 1986.
Record daily precipitation for each month at Grandfalls 3SSE
Month
Record daily precipitation (mm)
Date
Jan
41.9 mm (1.6 in)
22 January 1938
Feb
53.3 mm (2.1 in)
18 February 1965
Mar
43.2 mm (1.7 in)
10 March 1973
Apr
76.2 mm (3.0 in)
29 April 2007
May
66.0 mm (2.6 in)
10 May 1947
Jun
135.1 mm (5.3 in)
26 June 1938
Jul
81.3 mm (3.2 in)
20 July 1955
Aug
71.6 mm (2.8 in)
7 August 1989
Sep
149.1 mm (5.9 in)
4 September 1986
Oct
63.5 mm (2.5 in)
1 October 1926
Nov
53.3 mm (2.1 in)
4 November 1978
Dec
49.3 mm (1.9 in)
11 December 1946
Period of Record Coverage
1909 to 2015
Complete yearUnder 90 percent of days
66 years of record at Grandfalls 3SSE, 1909 to 2015. 27 years have data for under 90 percent of days and are left out of rankings: 1909, 1940, 1945, 1948, 1949, 1950, 1953, 1954 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Grandfalls 3SSE, 1941 to 2012. Blue stripes are years cooler than the station's own mean of 17.9 C (64.2 F); red stripes are warmer. The coolest year was 1979, at 16.8 C (62.2 F), and the warmest was 1998, at 19.8 C (67.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Grandfalls 3SSE as warming stripes, 1941 to 2012
Year
Annual mean temperature
Difference from the station mean
1941
17.4 C
-0.49 C
1942
17.0 C
-0.85 C
1944
17.0 C
-0.87 C
1964
17.8 C
-0.11 C
1965
18.2 C
+0.29 C
1966
17.6 C
-0.30 C
1967
18.1 C
+0.18 C
1968
17.4 C
-0.52 C
1969
18.3 C
+0.38 C
1970
17.0 C
-0.85 C
1971
17.6 C
-0.34 C
1972
17.9 C
-0.03 C
1978
17.5 C
-0.40 C
1979
16.8 C
-1.09 C
1980
17.8 C
-0.12 C
1981
17.8 C
-0.10 C
1982
18.1 C
+0.24 C
1984
18.0 C
+0.11 C
1986
18.4 C
+0.52 C
1988
17.6 C
-0.30 C
1989
17.9 C
-0.01 C
1990
18.2 C
+0.31 C
1991
17.9 C
0.00 C
1992
17.8 C
-0.10 C
1993
17.9 C
+0.03 C
1997
17.8 C
-0.08 C
1998
19.8 C
+1.86 C
2011
19.2 C
+1.34 C
2012
19.3 C
+1.39 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1909 to 2015
Yearly extremes at Grandfalls 3SSE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
47.2 C (117.0 F)
1994
42.2 C (108.0 F)
66
Coldest night (TNn)
-22.8 C (-9.0 F)
1985
-11.1 C (12.0 F)
66
Wettest day (Rx1day)
149.1 mm (5.9 in)
1986
44.0 mm (1.7 in)
100
Wettest five days (Rx5day)
157.0 mm (6.2 in)
1986
61.8 mm (2.4 in)
100
Longest dry spell (CDD)
129 days
1934
59 days
100
Hottest day (TXx)
The hottest day of the year at Grandfalls 3SSE, 1909 to 2015. The record is 47.2 C (117.0 F) in 1994, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Grandfalls 3SSE by year
Year
Hottest day (TXx)
1909
31.7 C (89.1 F)
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1940
41.1 C (106.0 F)
1941
38.9 C (102.0 F)
1942
43.9 C (111.0 F)
1943
41.1 C (106.0 F)
1944
41.7 C (107.1 F)
1945
42.8 C (109.0 F)
1946
41.1 C (106.0 F)
1947
42.2 C (108.0 F)
1948
42.2 C (108.0 F)
1949
37.8 C (100.0 F)
1950
36.1 C (97.0 F)
1953
40.0 C (104.0 F)
1954
42.8 C (109.0 F)
1955
40.6 C (105.1 F)
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
38.9 C (102.0 F)
1964
42.2 C (108.0 F)
1965
40.6 C (105.1 F)
1966
41.1 C (106.0 F)
1967
41.7 C (107.1 F)
1968
42.2 C (108.0 F)
1969
43.3 C (109.9 F)
1970
41.7 C (107.1 F)
1971
39.4 C (102.9 F)
1972
41.1 C (106.0 F)
1973
41.7 C (107.1 F)
1974
40.6 C (105.1 F)
1975
38.3 C (100.9 F)
1976
40.6 C (105.1 F)
1977
43.3 C (109.9 F)
1978
42.2 C (108.0 F)
1979
41.7 C (107.1 F)
1980
43.3 C (109.9 F)
1981
43.9 C (111.0 F)
1982
42.2 C (108.0 F)
1983
43.3 C (109.9 F)
1984
41.7 C (107.1 F)
1985
43.3 C (109.9 F)
1986
42.8 C (109.0 F)
1987
43.3 C (109.9 F)
1988
43.3 C (109.9 F)
1989
46.7 C (116.1 F)
1990
43.3 C (109.9 F)
1991
42.8 C (109.0 F)
1992
42.8 C (109.0 F)
1993
42.2 C (108.0 F)
1994
47.2 C (117.0 F)
1995
43.3 C (109.9 F)
1996
43.9 C (111.0 F)
1997
41.7 C (107.1 F)
1998
46.1 C (115.0 F)
1999
43.9 C (111.0 F)
2001
35.6 C (96.1 F)
2002
43.9 C (111.0 F)
2003
44.4 C (111.9 F)
2004
43.9 C (111.0 F)
2005
43.9 C (111.0 F)
2006
41.7 C (107.1 F)
2007
40.6 C (105.1 F)
2008
43.3 C (109.9 F)
2009
42.8 C (109.0 F)
2010
45.0 C (113.0 F)
2011
45.0 C (113.0 F)
2012
42.8 C (109.0 F)
2013
43.9 C (111.0 F)
2015
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Grandfalls 3SSE, 1909 to 2015. The record is -22.8 C (-9.0 F) in 1985, marked on the chart; the median year is -11.1 C (12.0 F).
Coldest night (TNn) at Grandfalls 3SSE by year
Year
Coldest night (TNn)
1909
-11.1 C (12.0 F)
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1940
-16.1 C (3.0 F)
1941
-7.8 C (18.0 F)
1942
-11.1 C (12.0 F)
1943
-15.0 C (5.0 F)
1944
-14.4 C (6.1 F)
1945
-10.6 C (12.9 F)
1946
-20.0 C (-4.0 F)
1947
-17.8 C (0.0 F)
1948
-11.1 C (12.0 F)
1949
-14.4 C (6.1 F)
1950
-7.8 C (18.0 F)
1953
-15.6 C (3.9 F)
1954
-9.4 C (15.1 F)
1955
-7.8 C (18.0 F)
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
-10.6 C (12.9 F)
1964
-15.6 C (3.9 F)
1965
-7.8 C (18.0 F)
1966
-11.7 C (10.9 F)
1967
-14.4 C (6.1 F)
1968
-10.0 C (14.0 F)
1969
-7.2 C (19.0 F)
1970
-12.2 C (10.0 F)
1971
-15.0 C (5.0 F)
1972
-17.2 C (1.0 F)
1973
-14.4 C (6.1 F)
1974
-11.7 C (10.9 F)
1975
-9.4 C (15.1 F)
1976
-11.7 C (10.9 F)
1977
-10.6 C (12.9 F)
1978
-11.7 C (10.9 F)
1979
-14.4 C (6.1 F)
1980
-11.1 C (12.0 F)
1981
-13.3 C (8.1 F)
1982
-12.8 C (9.0 F)
1983
-17.8 C (0.0 F)
1984
-7.8 C (18.0 F)
1985
-22.8 C (-9.0 F)
1986
-13.3 C (8.1 F)
1987
-12.2 C (10.0 F)
1988
-11.7 C (10.9 F)
1989
-17.8 C (0.0 F)
1990
-11.7 C (10.9 F)
1991
-8.9 C (16.0 F)
1992
-10.0 C (14.0 F)
1993
-10.6 C (12.9 F)
1994
-10.0 C (14.0 F)
1995
-8.3 C (17.1 F)
1996
-10.0 C (14.0 F)
1997
-10.0 C (14.0 F)
1998
-8.3 C (17.1 F)
1999
-9.4 C (15.1 F)
2001
-13.9 C (7.0 F)
2002
-9.4 C (15.1 F)
2003
-11.1 C (12.0 F)
2004
-6.7 C (19.9 F)
2005
-8.9 C (16.0 F)
2006
-10.0 C (14.0 F)
2007
-9.4 C (15.1 F)
2008
-6.1 C (21.0 F)
2009
-11.7 C (10.9 F)
2010
-13.3 C (8.1 F)
2011
-17.2 C (1.0 F)
2012
-9.4 C (15.1 F)
2013
-8.3 C (17.1 F)
2015
1.7 C (35.1 F)
Wettest day (Rx1day)
The wettest day of the year at Grandfalls 3SSE, 1909 to 2015. The record is 149.1 mm (5.9 in) in 1986, marked on the chart; the median year is 44.0 mm (1.7 in).
Wettest day (Rx1day) at Grandfalls 3SSE by year
Year
Wettest day (Rx1day)
1909
5.1 mm (0.20 in)
1911
66.0 mm (2.6 in)
1912
31.8 mm (1.3 in)
1913
44.5 mm (1.8 in)
1914
53.3 mm (2.1 in)
1915
40.6 mm (1.6 in)
1916
30.2 mm (1.2 in)
1917
15.2 mm (0.6 in)
1918
30.5 mm (1.2 in)
1919
32.3 mm (1.3 in)
1921
31.8 mm (1.3 in)
1922
63.5 mm (2.5 in)
1923
33.8 mm (1.3 in)
1924
27.9 mm (1.1 in)
1925
63.5 mm (2.5 in)
1926
63.5 mm (2.5 in)
1927
76.2 mm (3.0 in)
1928
61.0 mm (2.4 in)
1929
78.7 mm (3.1 in)
1930
35.6 mm (1.4 in)
1931
38.1 mm (1.5 in)
1932
80.0 mm (3.1 in)
1933
21.6 mm (0.9 in)
1934
58.4 mm (2.3 in)
1935
35.6 mm (1.4 in)
1936
50.8 mm (2.0 in)
1937
50.8 mm (2.0 in)
1938
135.1 mm (5.3 in)
1940
57.2 mm (2.3 in)
1941
76.2 mm (3.0 in)
1942
63.5 mm (2.5 in)
1943
35.3 mm (1.4 in)
1944
52.1 mm (2.1 in)
1945
33.8 mm (1.3 in)
1946
49.3 mm (1.9 in)
1947
66.0 mm (2.6 in)
1948
27.4 mm (1.1 in)
1949
25.1 mm (1.0 in)
1950
6.4 mm (0.25 in)
1953
14.7 mm (0.6 in)
1954
30.5 mm (1.2 in)
1955
81.3 mm (3.2 in)
1956
13.2 mm (0.5 in)
1957
39.6 mm (1.6 in)
1958
36.8 mm (1.4 in)
1959
41.7 mm (1.6 in)
1960
41.4 mm (1.6 in)
1961
24.1 mm (0.9 in)
1962
27.9 mm (1.1 in)
1963
16.3 mm (0.6 in)
1964
110.2 mm (4.3 in)
1965
53.3 mm (2.1 in)
1966
45.7 mm (1.8 in)
1967
38.9 mm (1.5 in)
1968
21.3 mm (0.8 in)
1969
71.1 mm (2.8 in)
1970
36.1 mm (1.4 in)
1971
68.1 mm (2.7 in)
1972
47.2 mm (1.9 in)
1973
43.2 mm (1.7 in)
1974
66.8 mm (2.6 in)
1975
55.9 mm (2.2 in)
1976
49.5 mm (1.9 in)
1977
20.6 mm (0.8 in)
1978
53.3 mm (2.1 in)
1979
38.1 mm (1.5 in)
1980
59.4 mm (2.3 in)
1981
45.7 mm (1.8 in)
1982
43.4 mm (1.7 in)
1983
30.5 mm (1.2 in)
1984
57.2 mm (2.3 in)
1985
45.7 mm (1.8 in)
1986
149.1 mm (5.9 in)
1987
49.0 mm (1.9 in)
1988
50.3 mm (2.0 in)
1989
71.6 mm (2.8 in)
1990
51.3 mm (2.0 in)
1991
57.7 mm (2.3 in)
1992
58.4 mm (2.3 in)
1993
33.5 mm (1.3 in)
1994
88.9 mm (3.5 in)
1995
50.8 mm (2.0 in)
1996
24.1 mm (0.9 in)
1997
41.9 mm (1.6 in)
1998
27.9 mm (1.1 in)
1999
38.1 mm (1.5 in)
2001
0.0 mm (0.00 in)
2002
62.2 mm (2.4 in)
2003
65.8 mm (2.6 in)
2004
41.4 mm (1.6 in)
2005
55.9 mm (2.2 in)
2006
19.1 mm (0.8 in)
2007
76.2 mm (3.0 in)
2008
38.1 mm (1.5 in)
2009
33.3 mm (1.3 in)
2010
48.0 mm (1.9 in)
2011
11.2 mm (0.4 in)
2012
90.9 mm (3.6 in)
2013
40.9 mm (1.6 in)
2015
22.9 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grandfalls 3SSE, 1909 to 2015. The record is 157.0 mm (6.2 in) in 1986, marked on the chart; the median year is 61.8 mm (2.4 in).
Wettest five days (Rx5day) at Grandfalls 3SSE by year
Year
Wettest five days (Rx5day)
1909
5.1 mm (0.20 in)
1911
66.0 mm (2.6 in)
1912
31.8 mm (1.3 in)
1913
50.9 mm (2.0 in)
1914
69.9 mm (2.8 in)
1915
61.4 mm (2.4 in)
1916
46.7 mm (1.8 in)
1917
31.0 mm (1.2 in)
1918
40.7 mm (1.6 in)
1919
43.7 mm (1.7 in)
1921
50.8 mm (2.0 in)
1922
82.6 mm (3.3 in)
1923
33.8 mm (1.3 in)
1924
36.9 mm (1.5 in)
1925
68.1 mm (2.7 in)
1926
76.2 mm (3.0 in)
1927
92.7 mm (3.6 in)
1928
139.7 mm (5.5 in)
1929
78.7 mm (3.1 in)
1930
76.2 mm (3.0 in)
1931
52.1 mm (2.1 in)
1932
80.0 mm (3.1 in)
1933
59.7 mm (2.4 in)
1934
58.4 mm (2.3 in)
1935
66.1 mm (2.6 in)
1936
50.8 mm (2.0 in)
1937
50.8 mm (2.0 in)
1938
144.0 mm (5.7 in)
1940
80.0 mm (3.1 in)
1941
84.6 mm (3.3 in)
1942
68.1 mm (2.7 in)
1943
71.2 mm (2.8 in)
1944
53.3 mm (2.1 in)
1945
48.8 mm (1.9 in)
1946
49.3 mm (1.9 in)
1947
66.0 mm (2.6 in)
1948
37.9 mm (1.5 in)
1949
26.2 mm (1.0 in)
1950
12.8 mm (0.5 in)
1953
14.7 mm (0.6 in)
1954
46.0 mm (1.8 in)
1955
96.0 mm (3.8 in)
1956
16.0 mm (0.6 in)
1957
62.2 mm (2.4 in)
1958
66.1 mm (2.6 in)
1959
41.7 mm (1.6 in)
1960
54.1 mm (2.1 in)
1961
39.3 mm (1.5 in)
1962
28.4 mm (1.1 in)
1963
28.0 mm (1.1 in)
1964
123.7 mm (4.9 in)
1965
54.1 mm (2.1 in)
1966
63.7 mm (2.5 in)
1967
56.7 mm (2.2 in)
1968
32.3 mm (1.3 in)
1969
84.3 mm (3.3 in)
1970
39.1 mm (1.5 in)
1971
95.1 mm (3.7 in)
1972
57.1 mm (2.2 in)
1973
82.8 mm (3.3 in)
1974
81.3 mm (3.2 in)
1975
73.9 mm (2.9 in)
1976
65.5 mm (2.6 in)
1977
23.9 mm (0.9 in)
1978
86.3 mm (3.4 in)
1979
81.6 mm (3.2 in)
1980
124.9 mm (4.9 in)
1981
86.3 mm (3.4 in)
1982
66.9 mm (2.6 in)
1983
30.5 mm (1.2 in)
1984
65.6 mm (2.6 in)
1985
54.6 mm (2.1 in)
1986
157.0 mm (6.2 in)
1987
55.6 mm (2.2 in)
1988
62.5 mm (2.5 in)
1989
89.4 mm (3.5 in)
1990
68.6 mm (2.7 in)
1991
115.7 mm (4.6 in)
1992
121.5 mm (4.8 in)
1993
41.4 mm (1.6 in)
1994
90.4 mm (3.6 in)
1995
66.5 mm (2.6 in)
1996
53.2 mm (2.1 in)
1997
53.3 mm (2.1 in)
1998
29.4 mm (1.2 in)
1999
40.7 mm (1.6 in)
2001
0.0 mm (0.00 in)
2002
68.8 mm (2.7 in)
2003
68.1 mm (2.7 in)
2004
80.4 mm (3.2 in)
2005
66.5 mm (2.6 in)
2006
19.1 mm (0.8 in)
2007
112.0 mm (4.4 in)
2008
91.7 mm (3.6 in)
2009
42.4 mm (1.7 in)
2010
137.0 mm (5.4 in)
2011
13.0 mm (0.5 in)
2012
100.9 mm (4.0 in)
2013
48.0 mm (1.9 in)
2015
22.9 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grandfalls 3SSE, 1909 to 2015. The record is 129 days in 1934, marked on the chart; the median year is 59 days.
Longest dry spell (CDD) at Grandfalls 3SSE by year
Year
Longest dry spell (CDD)
1909
39 days
1911
58 days
1912
86 days
1913
70 days
1914
114 days
1915
70 days
1916
81 days
1917
98 days
1918
95 days
1919
79 days
1921
44 days
1922
46 days
1923
57 days
1924
55 days
1925
101 days
1926
49 days
1927
85 days
1928
105 days
1929
54 days
1930
65 days
1931
76 days
1932
81 days
1933
83 days
1934
129 days
1935
65 days
1936
116 days
1937
23 days
1938
52 days
1940
36 days
1941
29 days
1942
37 days
1943
69 days
1944
73 days
1945
83 days
1946
90 days
1947
62 days
1948
34 days
1949
54 days
1950
51 days
1953
32 days
1954
62 days
1955
53 days
1956
50 days
1957
72 days
1958
47 days
1959
44 days
1960
42 days
1961
45 days
1962
33 days
1963
44 days
1964
70 days
1965
69 days
1966
75 days
1967
97 days
1968
51 days
1969
44 days
1970
74 days
1971
105 days
1972
59 days
1973
86 days
1974
59 days
1975
58 days
1976
47 days
1977
41 days
1978
87 days
1979
99 days
1980
54 days
1981
70 days
1982
65 days
1983
41 days
1984
79 days
1985
35 days
1986
105 days
1987
37 days
1988
48 days
1989
64 days
1990
30 days
1991
45 days
1992
38 days
1993
51 days
1994
37 days
1995
34 days
1996
52 days
1997
34 days
1998
84 days
1999
47 days
2001
61 days
2002
53 days
2003
67 days
2004
24 days
2005
42 days
2006
48 days
2007
27 days
2008
121 days
2009
70 days
2010
72 days
2011
129 days
2012
69 days
2013
81 days
2015
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
29 years with a frost
Across 29 years with a frost, the median last spring frost at Grandfalls 3SSE falls on 1 April and the median first autumn frost on 1 November, which leaves a median of 214 days between them.
Fitted over all years, the growing season changes by -0.9 days per decade at this station.
Frost dates and growing season at Grandfalls 3SSE
Measure
Median, all years
Earliest period
Recent period (1941 to 2012)
Recent against earliest
Fitted trend
Last spring frost
1 April
n/a
1 April
n/a
+0.2 days per decade
First autumn frost
1 November
n/a
1 November
n/a
-0.7 days per decade
Growing days
214 days
n/a
214 days
n/a
-0.9 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, 1912 to 2012
A day with at least 45.3 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 116.0 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Grandfalls 3SSE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.3 mm (1.8 in)
5 years
63.9 mm (2.5 in)
10 years
76.3 mm (3.0 in)
25 years
92.2 mm (3.6 in)
50 years
104.1 mm (4.1 in)
100 years
116.0 mm (4.6 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 1912 to 2012.
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: 149.1 mm (5.9 in) in 1986; 110.2 mm (4.3 in) in 1964; 90.9 mm (3.6 in) in 2012.
Download the Data
Data for Grandfalls 3SSE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grandfalls 3SSE 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.