Record envelope, standing records and threshold days for Glenham (USC00303259), New York, United States, with 65 years of record.
Key Facts for Glenham
Glenham (USC00303259) is a weather station in New York, United States at 41.52 latitude and -73.93 longitude, 84 m (275 ft) above sea level.
The station reports from 1932 to 1996, 65 years of record.
1,464 records set at Glenham still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Glenham set a daily record low maximum temperature of 22.2 C (72.0 F) on 31 July 1996.
About the Station
Location: New York, United States, 41.52 latitude, -73.93 longitude.
Elevation: 84 m (275 ft).
Period of record: 1932 to 1996, 65 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 Glenham. 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 Glenham, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-26.7 C (-16.1 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-8.9 C (16.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
38.9 C (102.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
6.7 C (44.1 F)
n/a
n/a
Aug
39.4 C (102.9 F)
2.2 C (36.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Glenham still stand. 1979 holds the most, with 41.
Standing records at Glenham by the year they were set
Year set
Standing records
1932
21
1933
31
1934
37
1935
18
1936
28
1937
17
1938
29
1939
26
1940
28
1941
20
1942
26
1943
24
1944
20
1945
26
1946
23
1947
23
1948
28
1949
28
1950
27
1951
17
1952
12
1953
26
1954
32
1955
24
1956
40
1957
23
1958
10
1959
33
1960
15
1961
17
1962
20
1963
26
1964
28
1965
24
1966
23
1967
25
1968
22
1969
14
1970
16
1971
7
1972
15
1973
17
1974
24
1975
25
1976
31
1977
21
1978
15
1979
41
1980
22
1981
18
1982
27
1983
21
1984
26
1985
16
1986
13
1987
15
1988
22
1989
20
1990
37
1991
40
1992
16
1993
14
1994
12
1995
11
1996
11
All-Time Record Progression
4 new records
4 all-time records were set at Glenham between 4 July 1966 and 8 January 1996. Each dot is a new record.
When Glenham set new all-time records
Date
Kind
Detail
1966-07-04
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
1971-08-28
Record daily precipitation
Record daily precipitation 190.5 mm (7.5 in)
1980-07-21
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
1996-01-08
Record daily snowfall
Record daily snowfall 59.7 cm (23.5 in)
Wettest Day of Each Month
Aug: 190.5 mm (7.5 in)
The wettest day on record for each calendar month at Glenham. The most was 190.5 mm (7.5 in) on 28 August 1971.
Record daily precipitation for each month at Glenham
Month
Record daily precipitation (mm)
Date
Jan
71.4 mm (2.8 in)
9 January 1978
Feb
62.7 mm (2.5 in)
25 February 1977
Mar
77.7 mm (3.1 in)
22 March 1980
Apr
69.6 mm (2.7 in)
17 April 1983
May
129.5 mm (5.1 in)
30 May 1984
Jun
121.9 mm (4.8 in)
30 June 1973
Jul
99.1 mm (3.9 in)
22 July 1938
Aug
190.5 mm (7.5 in)
28 August 1971
Sep
101.3 mm (4.0 in)
20 September 1938
Oct
143.0 mm (5.6 in)
16 October 1955
Nov
88.4 mm (3.5 in)
12 November 1995
Dec
85.3 mm (3.4 in)
31 December 1948
Period of Record Coverage
1932 to 1996
Complete yearUnder 90 percent of days
65 years of record at Glenham, 1932 to 1996. 4 years have data for under 90 percent of days and are left out of rankings: 1932, 1945, 1994, 1996.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Glenham, 1933 to 1993. Blue stripes are years cooler than the station's own mean of 10.5 C (50.9 F); red stripes are warmer. The coolest year was 1940, at 9.1 C (48.3 F), and the warmest was 1990, at 12.6 C (54.6 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Glenham as warming stripes, 1933 to 1993
Year
Annual mean temperature
Difference from the station mean
1933
10.8 C
+0.27 C
1934
9.9 C
-0.60 C
1935
10.0 C
-0.54 C
1936
10.4 C
-0.12 C
1937
10.8 C
+0.27 C
1938
11.0 C
+0.46 C
1939
10.5 C
-0.05 C
1940
9.1 C
-1.45 C
1941
10.7 C
+0.14 C
1942
10.6 C
+0.06 C
1943
10.0 C
-0.58 C
1944
10.5 C
+0.00 C
1945
10.3 C
-0.20 C
1946
10.9 C
+0.40 C
1947
10.3 C
-0.28 C
1948
9.8 C
-0.70 C
1949
11.5 C
+0.98 C
1950
9.8 C
-0.78 C
1951
10.4 C
-0.17 C
1952
11.2 C
+0.67 C
1953
12.0 C
+1.42 C
1954
10.9 C
+0.32 C
1955
11.1 C
+0.56 C
1956
10.3 C
-0.19 C
1957
11.5 C
+0.99 C
1958
9.8 C
-0.71 C
1959
11.1 C
+0.60 C
1960
10.3 C
-0.22 C
1961
10.5 C
-0.03 C
1962
9.7 C
-0.86 C
1963
9.6 C
-0.91 C
1964
10.2 C
-0.38 C
1965
9.7 C
-0.81 C
1966
10.4 C
-0.10 C
1967
9.9 C
-0.63 C
1968
10.2 C
-0.31 C
1969
10.4 C
-0.13 C
1970
10.4 C
-0.13 C
1971
10.6 C
+0.02 C
1972
10.0 C
-0.58 C
1973
11.6 C
+1.08 C
1974
10.4 C
-0.17 C
1975
10.9 C
+0.38 C
1976
9.9 C
-0.64 C
1977
10.4 C
-0.13 C
1978
9.6 C
-0.89 C
1979
10.5 C
-0.08 C
1980
10.2 C
-0.31 C
1981
10.6 C
+0.05 C
1982
10.3 C
-0.25 C
1983
11.2 C
+0.62 C
1984
11.1 C
+0.52 C
1985
10.7 C
+0.19 C
1988
10.7 C
+0.19 C
1989
10.8 C
+0.31 C
1990
12.6 C
+2.04 C
1991
12.4 C
+1.83 C
1992
10.1 C
-0.39 C
1993
10.3 C
-0.20 C
The fitted trend in annual mean temperature here over 1933 to 1993 is 0.07 C (-0.03 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.13 F (-0.05 to 0.30) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Glenham
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.07 C (-0.03 to 0.17) per decade
0.13 F (-0.05 to 0.30) per decade
1933 to 1993
59
Not clearly different from zero
Mean daily maximum
0.03 C (-0.09 to 0.14) per decade
0.05 F (-0.16 to 0.25) per decade
1933 to 1993
59
Not clearly different from zero
Mean daily minimum
0.12 C (0.02 to 0.22) per decade
0.21 F (0.03 to 0.39) per decade
1933 to 1993
59
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
1932 to 1996
Yearly extremes at Glenham: 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)
1966
36.7 C (98.1 F)
65
Coldest night (TNn)
-30.0 C (-22.0 F)
1934
-21.1 C (-6.0 F)
65
Wettest day (Rx1day)
190.5 mm (7.5 in)
1971
66.3 mm (2.6 in)
65
Wettest five days (Rx5day)
242.5 mm (9.5 in)
1938
98.5 mm (3.9 in)
65
Longest dry spell (CDD)
38 days
1966
18 days
65
Hottest day (TXx)
The hottest day of the year at Glenham, 1932 to 1996. The record is 40.6 C (105.1 F) in 1966, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Glenham by year
Year
Hottest day (TXx)
1932
33.9 C (93.0 F)
1933
37.8 C (100.0 F)
1934
37.2 C (99.0 F)
1935
35.0 C (95.0 F)
1936
39.4 C (102.9 F)
1937
36.7 C (98.1 F)
1938
35.6 C (96.1 F)
1939
35.6 C (96.1 F)
1940
36.7 C (98.1 F)
1941
36.1 C (97.0 F)
1942
35.6 C (96.1 F)
1943
36.7 C (98.1 F)
1944
37.8 C (100.0 F)
1945
36.1 C (97.0 F)
1946
35.6 C (96.1 F)
1947
35.0 C (95.0 F)
1948
38.3 C (100.9 F)
1949
36.7 C (98.1 F)
1950
32.8 C (91.0 F)
1951
32.2 C (90.0 F)
1952
37.8 C (100.0 F)
1953
39.4 C (102.9 F)
1954
37.8 C (100.0 F)
1955
39.4 C (102.9 F)
1956
37.2 C (99.0 F)
1957
38.9 C (102.0 F)
1958
33.9 C (93.0 F)
1959
36.1 C (97.0 F)
1960
34.4 C (93.9 F)
1961
35.0 C (95.0 F)
1962
37.8 C (100.0 F)
1963
36.1 C (97.0 F)
1964
36.7 C (98.1 F)
1965
36.1 C (97.0 F)
1966
40.6 C (105.1 F)
1967
34.4 C (93.9 F)
1968
37.8 C (100.0 F)
1969
36.1 C (97.0 F)
1970
36.7 C (98.1 F)
1971
36.1 C (97.0 F)
1972
34.4 C (93.9 F)
1973
37.2 C (99.0 F)
1974
35.6 C (96.1 F)
1975
36.7 C (98.1 F)
1976
34.4 C (93.9 F)
1977
37.8 C (100.0 F)
1978
36.1 C (97.0 F)
1979
36.1 C (97.0 F)
1980
37.2 C (99.0 F)
1981
36.1 C (97.0 F)
1982
36.1 C (97.0 F)
1983
37.8 C (100.0 F)
1984
36.7 C (98.1 F)
1985
37.8 C (100.0 F)
1986
36.7 C (98.1 F)
1987
37.2 C (99.0 F)
1988
39.4 C (102.9 F)
1989
36.7 C (98.1 F)
1990
35.6 C (96.1 F)
1991
39.4 C (102.9 F)
1992
36.1 C (97.0 F)
1993
37.8 C (100.0 F)
1994
33.3 C (91.9 F)
1995
38.9 C (102.0 F)
1996
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Glenham, 1932 to 1996. The record is -30.0 C (-22.0 F) in 1934, marked on the chart; the median year is -21.1 C (-6.0 F).
Coldest night (TNn) at Glenham by year
Year
Coldest night (TNn)
1932
-20.6 C (-5.1 F)
1933
-25.0 C (-13.0 F)
1934
-30.0 C (-22.0 F)
1935
-30.0 C (-22.0 F)
1936
-24.4 C (-11.9 F)
1937
-12.2 C (10.0 F)
1938
-26.1 C (-15.0 F)
1939
-20.0 C (-4.0 F)
1940
-20.0 C (-4.0 F)
1941
-23.9 C (-11.0 F)
1942
-27.2 C (-17.0 F)
1943
-27.2 C (-17.0 F)
1944
-21.1 C (-6.0 F)
1945
-26.7 C (-16.1 F)
1946
-17.8 C (0.0 F)
1947
-19.4 C (-2.9 F)
1948
-27.2 C (-17.0 F)
1949
-15.6 C (3.9 F)
1950
-23.9 C (-11.0 F)
1951
-17.8 C (0.0 F)
1952
-17.8 C (0.0 F)
1953
-11.7 C (10.9 F)
1954
-25.6 C (-14.1 F)
1955
-24.4 C (-11.9 F)
1956
-16.7 C (1.9 F)
1957
-23.9 C (-11.0 F)
1958
-20.0 C (-4.0 F)
1959
-18.3 C (-0.9 F)
1960
-19.4 C (-2.9 F)
1961
-28.9 C (-20.0 F)
1962
-20.0 C (-4.0 F)
1963
-22.2 C (-8.0 F)
1964
-22.2 C (-8.0 F)
1965
-24.4 C (-11.9 F)
1966
-20.6 C (-5.1 F)
1967
-22.8 C (-9.0 F)
1968
-25.6 C (-14.1 F)
1969
-18.9 C (-2.0 F)
1970
-22.8 C (-9.0 F)
1971
-21.1 C (-6.0 F)
1972
-20.6 C (-5.1 F)
1973
-17.8 C (0.0 F)
1974
-20.6 C (-5.1 F)
1975
-18.9 C (-2.0 F)
1976
-21.1 C (-6.0 F)
1977
-21.7 C (-7.1 F)
1978
-20.0 C (-4.0 F)
1979
-23.9 C (-11.0 F)
1980
-23.3 C (-9.9 F)
1981
-24.4 C (-11.9 F)
1982
-22.8 C (-9.0 F)
1983
-19.4 C (-2.9 F)
1984
-24.4 C (-11.9 F)
1985
-21.1 C (-6.0 F)
1986
-18.3 C (-0.9 F)
1987
-21.1 C (-6.0 F)
1988
-23.3 C (-9.9 F)
1989
-21.1 C (-6.0 F)
1990
-18.9 C (-2.0 F)
1991
-18.3 C (-0.9 F)
1992
-15.0 C (5.0 F)
1993
-21.7 C (-7.1 F)
1994
-26.7 C (-16.1 F)
1995
-20.6 C (-5.1 F)
1996
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Glenham, 1932 to 1996. The record is 190.5 mm (7.5 in) in 1971, marked on the chart; the median year is 66.3 mm (2.6 in).
Wettest day (Rx1day) at Glenham by year
Year
Wettest day (Rx1day)
1932
76.2 mm (3.0 in)
1933
93.7 mm (3.7 in)
1934
96.3 mm (3.8 in)
1935
47.2 mm (1.9 in)
1936
44.2 mm (1.7 in)
1937
91.4 mm (3.6 in)
1938
101.3 mm (4.0 in)
1939
56.6 mm (2.2 in)
1940
46.0 mm (1.8 in)
1941
60.7 mm (2.4 in)
1942
43.7 mm (1.7 in)
1943
81.0 mm (3.2 in)
1944
55.1 mm (2.2 in)
1945
77.2 mm (3.0 in)
1946
54.9 mm (2.2 in)
1947
74.9 mm (2.9 in)
1948
85.3 mm (3.4 in)
1949
42.7 mm (1.7 in)
1950
70.4 mm (2.8 in)
1951
58.9 mm (2.3 in)
1952
71.1 mm (2.8 in)
1953
56.1 mm (2.2 in)
1954
71.1 mm (2.8 in)
1955
176.5 mm (6.9 in)
1956
78.5 mm (3.1 in)
1957
69.9 mm (2.8 in)
1958
54.6 mm (2.1 in)
1959
46.5 mm (1.8 in)
1960
77.5 mm (3.1 in)
1961
42.4 mm (1.7 in)
1962
41.4 mm (1.6 in)
1963
61.0 mm (2.4 in)
1964
36.3 mm (1.4 in)
1965
34.3 mm (1.4 in)
1966
87.1 mm (3.4 in)
1967
55.9 mm (2.2 in)
1968
59.2 mm (2.3 in)
1969
46.2 mm (1.8 in)
1970
34.0 mm (1.3 in)
1971
190.5 mm (7.5 in)
1972
65.8 mm (2.6 in)
1973
121.9 mm (4.8 in)
1974
72.9 mm (2.9 in)
1975
86.1 mm (3.4 in)
1976
77.7 mm (3.1 in)
1977
69.9 mm (2.8 in)
1978
71.4 mm (2.8 in)
1979
65.0 mm (2.6 in)
1980
77.7 mm (3.1 in)
1981
66.5 mm (2.6 in)
1982
44.7 mm (1.8 in)
1983
69.6 mm (2.7 in)
1984
129.5 mm (5.1 in)
1985
71.6 mm (2.8 in)
1986
55.9 mm (2.2 in)
1987
52.6 mm (2.1 in)
1988
52.3 mm (2.1 in)
1989
91.9 mm (3.6 in)
1990
86.9 mm (3.4 in)
1991
66.3 mm (2.6 in)
1992
61.0 mm (2.4 in)
1993
41.1 mm (1.6 in)
1994
58.2 mm (2.3 in)
1995
88.4 mm (3.5 in)
1996
64.8 mm (2.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Glenham, 1932 to 1996. The record is 242.5 mm (9.5 in) in 1938, marked on the chart; the median year is 98.5 mm (3.9 in).
Wettest five days (Rx5day) at Glenham by year
Year
Wettest five days (Rx5day)
1932
93.9 mm (3.7 in)
1933
185.4 mm (7.3 in)
1934
165.7 mm (6.5 in)
1935
56.7 mm (2.2 in)
1936
77.7 mm (3.1 in)
1937
96.3 mm (3.8 in)
1938
242.5 mm (9.5 in)
1939
77.4 mm (3.0 in)
1940
88.5 mm (3.5 in)
1941
64.8 mm (2.6 in)
1942
79.0 mm (3.1 in)
1943
104.7 mm (4.1 in)
1944
79.5 mm (3.1 in)
1945
170.4 mm (6.7 in)
1946
105.2 mm (4.1 in)
1947
125.5 mm (4.9 in)
1948
107.1 mm (4.2 in)
1949
128.7 mm (5.1 in)
1950
78.3 mm (3.1 in)
1951
98.5 mm (3.9 in)
1952
99.3 mm (3.9 in)
1953
88.7 mm (3.5 in)
1954
92.7 mm (3.6 in)
1955
211.1 mm (8.3 in)
1956
97.6 mm (3.8 in)
1957
78.0 mm (3.1 in)
1958
107.0 mm (4.2 in)
1959
71.1 mm (2.8 in)
1960
130.9 mm (5.2 in)
1961
54.4 mm (2.1 in)
1962
58.1 mm (2.3 in)
1963
109.8 mm (4.3 in)
1964
54.6 mm (2.1 in)
1965
46.9 mm (1.8 in)
1966
102.3 mm (4.0 in)
1967
91.0 mm (3.6 in)
1968
86.1 mm (3.4 in)
1969
91.5 mm (3.6 in)
1970
76.9 mm (3.0 in)
1971
198.4 mm (7.8 in)
1972
93.9 mm (3.7 in)
1973
141.8 mm (5.6 in)
1974
92.0 mm (3.6 in)
1975
205.5 mm (8.1 in)
1976
106.1 mm (4.2 in)
1977
104.9 mm (4.1 in)
1978
90.7 mm (3.6 in)
1979
119.9 mm (4.7 in)
1980
100.6 mm (4.0 in)
1981
96.7 mm (3.8 in)
1982
83.1 mm (3.3 in)
1983
119.9 mm (4.7 in)
1984
207.7 mm (8.2 in)
1985
90.1 mm (3.5 in)
1986
104.9 mm (4.1 in)
1987
124.5 mm (4.9 in)
1988
111.7 mm (4.4 in)
1989
140.4 mm (5.5 in)
1990
134.4 mm (5.3 in)
1991
82.3 mm (3.2 in)
1992
65.5 mm (2.6 in)
1993
56.4 mm (2.2 in)
1994
128.3 mm (5.1 in)
1995
115.8 mm (4.6 in)
1996
137.2 mm (5.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Glenham, 1932 to 1996. The record is 38 days in 1966, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Glenham by year
Year
Longest dry spell (CDD)
1932
20 days
1933
12 days
1934
17 days
1935
16 days
1936
16 days
1937
14 days
1938
28 days
1939
25 days
1940
18 days
1941
19 days
1942
15 days
1943
19 days
1944
19 days
1945
16 days
1946
18 days
1947
35 days
1948
20 days
1949
18 days
1950
16 days
1951
17 days
1952
25 days
1953
23 days
1954
13 days
1955
12 days
1956
18 days
1957
22 days
1958
12 days
1959
13 days
1960
18 days
1961
15 days
1962
19 days
1963
27 days
1964
37 days
1965
23 days
1966
38 days
1967
18 days
1968
26 days
1969
17 days
1970
18 days
1971
17 days
1972
12 days
1973
16 days
1974
15 days
1975
15 days
1976
22 days
1977
16 days
1978
21 days
1979
12 days
1980
23 days
1981
17 days
1982
20 days
1983
20 days
1984
17 days
1985
19 days
1986
22 days
1987
11 days
1988
20 days
1989
15 days
1990
12 days
1991
23 days
1992
18 days
1993
18 days
1994
15 days
1995
16 days
1996
8 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Glenham falls on 25 April and the median first autumn frost on 10 October, which leaves a median of 168 days between them.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
Frost dates and growing season at Glenham
Measure
Median, all years
Earliest period
Recent period (1962 to 1993)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
24 April
n/a
-0.6 days per decade
First autumn frost
10 October
n/a
11 October
n/a
+1.6 days per decade
Growing days
168 days
n/a
169 days
n/a
+2.2 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
63 years, 1932 to 1995
A day with at least 64.2 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 169.3 mm (6.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Glenham: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
64.2 mm (2.5 in)
5 years
87.2 mm (3.4 in)
10 years
104.3 mm (4.1 in)
25 years
128.2 mm (5.0 in)
50 years
148.0 mm (5.8 in)
100 years
169.3 mm (6.7 in)
Longer than the 63 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, 63 years of values from 1932 to 1995.
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 1971; 176.5 mm (6.9 in) in 1955; 129.5 mm (5.1 in) in 1984.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Glenham, at 1952. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1952 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Glenham, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1952
+0.3
+0.5
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 Glenham standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Glenham 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.