Record envelope, standing records and threshold days for Glencliff (USC00273409), New Hampshire, United States, with 46 years of record.
Key Facts for Glencliff
Glencliff (USC00273409) is a weather station in New Hampshire, United States at 43.98 latitude and -71.90 longitude, 503 m (1,650 ft) above sea level.
The station reports from 1909 to 1954, 46 years of record.
1,464 records set at Glencliff still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Glencliff set a daily record high maximum temperature of 26.1 C (79.0 F) on 23 April 1954.
About the Station
Location: New Hampshire, United States, 43.98 latitude, -71.90 longitude.
Elevation: 503 m (1,650 ft).
Period of record: 1909 to 1954, 46 years.
Eligible elements: tmax, tmin, prcp.
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 Glencliff. 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 Glencliff, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Feb
15.6 C (60.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-18.3 C (-0.9 F)
n/a
n/a
May
33.3 C (91.9 F)
-8.9 C (16.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
33.9 C (93.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
17.2 C (63.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Glencliff still stand. 1918 holds the most, with 58.
Standing records at Glencliff by the year they were set
Year set
Standing records
1909
14
1910
35
1911
53
1912
39
1913
47
1914
45
1915
29
1916
36
1917
53
1918
58
1919
44
1920
33
1921
30
1922
26
1923
39
1924
27
1925
46
1926
26
1927
26
1928
23
1929
40
1930
39
1931
28
1932
32
1933
29
1934
37
1935
27
1936
32
1937
27
1938
36
1939
20
1940
29
1941
22
1942
22
1943
33
1944
28
1945
46
1946
31
1947
25
1948
25
1949
27
1950
22
1951
6
1952
7
1953
42
1954
23
All-Time Record Progression
1 new records
1 all-time records were set at Glencliff between 15 June 1942 and 15 June 1942. Each dot is a new record.
When Glencliff set new all-time records
Date
Kind
Detail
1942-06-15
Record daily precipitation
Record daily precipitation 175.3 mm (6.9 in)
Wettest Day of Each Month
Jun: 175.3 mm (6.9 in)
The wettest day on record for each calendar month at Glencliff. The most was 175.3 mm (6.9 in) on 15 June 1942.
Record daily precipitation for each month at Glencliff
Month
Record daily precipitation (mm)
Date
Jan
50.8 mm (2.0 in)
15 January 1936
Feb
50.8 mm (2.0 in)
8 February 1941
Mar
87.6 mm (3.4 in)
27 March 1953
Apr
69.9 mm (2.8 in)
16 April 1914
May
54.4 mm (2.1 in)
29 May 1951
Jun
175.3 mm (6.9 in)
15 June 1942
Jul
66.0 mm (2.6 in)
21 July 1931
Aug
85.6 mm (3.4 in)
3 August 1946
Sep
110.2 mm (4.3 in)
9 September 1924
Oct
64.5 mm (2.5 in)
20 October 1937
Nov
119.4 mm (4.7 in)
3 November 1927
Dec
43.7 mm (1.7 in)
6 December 1937
Period of Record Coverage
1909 to 1954
Complete yearUnder 90 percent of days
46 years of record at Glencliff, 1909 to 1954. 8 years have data for under 90 percent of days and are left out of rankings: 1909, 1914, 1922, 1932, 1933, 1951, 1952, 1954.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Glencliff, 1910 to 1950. Blue stripes are years cooler than the station's own mean of 5.5 C (42.0 F); red stripes are warmer. The coolest year was 1926, at 3.7 C (38.6 F), and the warmest was 1949, at 7.2 C (45.0 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Glencliff as warming stripes, 1910 to 1950
Year
Annual mean temperature
Difference from the station mean
1910
5.6 C
+0.05 C
1911
5.6 C
+0.06 C
1912
4.8 C
-0.78 C
1913
6.1 C
+0.50 C
1918
4.6 C
-0.91 C
1919
5.2 C
-0.32 C
1920
4.7 C
-0.83 C
1921
6.0 C
+0.46 C
1923
4.5 C
-1.10 C
1924
4.4 C
-1.13 C
1925
5.0 C
-0.51 C
1926
3.7 C
-1.90 C
1927
5.6 C
+0.01 C
1928
5.0 C
-0.54 C
1929
5.2 C
-0.38 C
1930
5.9 C
+0.37 C
1931
6.7 C
+1.15 C
1932
6.1 C
+0.54 C
1933
5.6 C
+0.00 C
1934
5.0 C
-0.58 C
1935
5.1 C
-0.43 C
1936
5.6 C
+0.03 C
1937
6.4 C
+0.84 C
1938
6.6 C
+1.08 C
1939
5.4 C
-0.15 C
1940
4.9 C
-0.69 C
1941
6.1 C
+0.55 C
1943
5.2 C
-0.36 C
1944
6.0 C
+0.42 C
1945
6.3 C
+0.79 C
1946
6.5 C
+0.90 C
1947
6.1 C
+0.51 C
1948
6.0 C
+0.43 C
1949
7.2 C
+1.68 C
1950
5.8 C
+0.22 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1910 to 1950. In Fahrenheit: 0.5 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Glencliff
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.5) per decade
0.5 F (0.2 to 0.9) per decade
1910 to 1950
35
Rise
Mean daily maximum
0.21 C (-0.03 to 0.45) per decade
0.4 F (-0.1 to 0.8) per decade
1910 to 1950
35
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.6) per decade
0.7 F (0.4 to 1.1) per decade
1910 to 1950
35
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
1909 to 1954
Yearly extremes at Glencliff: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1911
31.4 C (88.5 F)
46
Coldest night (TNn)
-35.6 C (-32.1 F)
1933
-27.2 C (-17.0 F)
46
Wettest day (Rx1day)
175.3 mm (6.9 in)
1942
54.5 mm (2.1 in)
46
Wettest five days (Rx5day)
203.0 mm (8.0 in)
1942
82.0 mm (3.2 in)
46
Longest dry spell (CDD)
23 days
1911
14 days
46
Hottest day (TXx)
The hottest day of the year at Glencliff, 1909 to 1954. The record is 36.1 C (97.0 F) in 1911, marked on the chart; the median year is 31.4 C (88.5 F).
Hottest day (TXx) at Glencliff by year
Year
Hottest day (TXx)
1909
30.0 C (86.0 F)
1910
31.1 C (88.0 F)
1911
36.1 C (97.0 F)
1912
33.9 C (93.0 F)
1913
33.3 C (91.9 F)
1914
32.2 C (90.0 F)
1915
30.6 C (87.1 F)
1916
31.7 C (89.1 F)
1917
33.9 C (93.0 F)
1918
32.8 C (91.0 F)
1919
35.0 C (95.0 F)
1920
30.0 C (86.0 F)
1921
33.3 C (91.9 F)
1922
31.1 C (88.0 F)
1923
31.7 C (89.1 F)
1924
30.0 C (86.0 F)
1925
31.7 C (89.1 F)
1926
32.2 C (90.0 F)
1927
30.0 C (86.0 F)
1928
31.7 C (89.1 F)
1929
31.1 C (88.0 F)
1930
30.6 C (87.1 F)
1931
32.2 C (90.0 F)
1932
30.6 C (87.1 F)
1933
32.8 C (91.0 F)
1934
31.1 C (88.0 F)
1935
32.2 C (90.0 F)
1936
30.6 C (87.1 F)
1937
31.1 C (88.0 F)
1938
31.7 C (89.1 F)
1939
31.7 C (89.1 F)
1940
30.6 C (87.1 F)
1941
31.7 C (89.1 F)
1942
31.1 C (88.0 F)
1943
30.0 C (86.0 F)
1944
33.9 C (93.0 F)
1945
30.6 C (87.1 F)
1946
31.1 C (88.0 F)
1947
31.7 C (89.1 F)
1948
30.6 C (87.1 F)
1949
30.6 C (87.1 F)
1950
29.4 C (84.9 F)
1951
30.0 C (86.0 F)
1952
33.3 C (91.9 F)
1953
33.9 C (93.0 F)
1954
27.2 C (81.0 F)
Coldest night (TNn)
The coldest night of the year at Glencliff, 1909 to 1954. The record is -35.6 C (-32.1 F) in 1933, marked on the chart; the median year is -27.2 C (-17.0 F).
Coldest night (TNn) at Glencliff by year
Year
Coldest night (TNn)
1909
-21.1 C (-6.0 F)
1910
-26.7 C (-16.1 F)
1911
-23.9 C (-11.0 F)
1912
-30.0 C (-22.0 F)
1913
-24.4 C (-11.9 F)
1914
-26.1 C (-15.0 F)
1915
-28.3 C (-18.9 F)
1916
-27.2 C (-17.0 F)
1917
-33.3 C (-27.9 F)
1918
-33.3 C (-27.9 F)
1919
-28.9 C (-20.0 F)
1920
-34.4 C (-29.9 F)
1921
-27.2 C (-17.0 F)
1922
-30.0 C (-22.0 F)
1923
-27.8 C (-18.0 F)
1924
-32.8 C (-27.0 F)
1925
-30.0 C (-22.0 F)
1926
-26.7 C (-16.1 F)
1927
-27.8 C (-18.0 F)
1928
-26.1 C (-15.0 F)
1929
-24.4 C (-11.9 F)
1930
-26.1 C (-15.0 F)
1931
-25.6 C (-14.1 F)
1932
-27.8 C (-18.0 F)
1933
-35.6 C (-32.1 F)
1934
-32.8 C (-27.0 F)
1935
-27.8 C (-18.0 F)
1936
-26.1 C (-15.0 F)
1937
-19.4 C (-2.9 F)
1938
-27.2 C (-17.0 F)
1939
-26.7 C (-16.1 F)
1940
-26.7 C (-16.1 F)
1941
-25.0 C (-13.0 F)
1942
-31.1 C (-24.0 F)
1943
-33.9 C (-29.0 F)
1944
-25.0 C (-13.0 F)
1945
-27.8 C (-18.0 F)
1946
-28.9 C (-20.0 F)
1947
-23.3 C (-9.9 F)
1948
-28.3 C (-18.9 F)
1949
-22.8 C (-9.0 F)
1950
-27.2 C (-17.0 F)
1951
-26.7 C (-16.1 F)
1952
-21.1 C (-6.0 F)
1953
-23.3 C (-9.9 F)
1954
-27.2 C (-17.0 F)
Wettest day (Rx1day)
The wettest day of the year at Glencliff, 1909 to 1954. The record is 175.3 mm (6.9 in) in 1942, marked on the chart; the median year is 54.5 mm (2.1 in).
Wettest day (Rx1day) at Glencliff by year
Year
Wettest day (Rx1day)
1909
42.9 mm (1.7 in)
1910
50.8 mm (2.0 in)
1911
51.8 mm (2.0 in)
1912
43.9 mm (1.7 in)
1913
57.2 mm (2.3 in)
1914
69.9 mm (2.8 in)
1915
60.7 mm (2.4 in)
1916
60.2 mm (2.4 in)
1917
69.1 mm (2.7 in)
1918
79.5 mm (3.1 in)
1919
54.4 mm (2.1 in)
1920
61.0 mm (2.4 in)
1921
65.5 mm (2.6 in)
1922
48.3 mm (1.9 in)
1923
53.6 mm (2.1 in)
1924
110.2 mm (4.3 in)
1925
52.1 mm (2.1 in)
1926
51.3 mm (2.0 in)
1927
119.4 mm (4.7 in)
1928
49.5 mm (1.9 in)
1929
42.7 mm (1.7 in)
1930
38.6 mm (1.5 in)
1931
66.0 mm (2.6 in)
1932
64.8 mm (2.6 in)
1933
48.3 mm (1.9 in)
1934
64.8 mm (2.6 in)
1935
39.1 mm (1.5 in)
1936
50.8 mm (2.0 in)
1937
64.5 mm (2.5 in)
1938
92.7 mm (3.6 in)
1939
36.1 mm (1.4 in)
1940
78.7 mm (3.1 in)
1941
50.8 mm (2.0 in)
1942
175.3 mm (6.9 in)
1943
50.8 mm (2.0 in)
1944
47.8 mm (1.9 in)
1945
58.4 mm (2.3 in)
1946
85.6 mm (3.4 in)
1947
60.7 mm (2.4 in)
1948
37.3 mm (1.5 in)
1949
59.4 mm (2.3 in)
1950
54.6 mm (2.1 in)
1951
54.4 mm (2.1 in)
1952
50.8 mm (2.0 in)
1953
87.6 mm (3.4 in)
1954
45.5 mm (1.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Glencliff, 1909 to 1954. The record is 203.0 mm (8.0 in) in 1942, marked on the chart; the median year is 82.0 mm (3.2 in).
Wettest five days (Rx5day) at Glencliff by year
Year
Wettest five days (Rx5day)
1909
66.5 mm (2.6 in)
1910
61.3 mm (2.4 in)
1911
63.0 mm (2.5 in)
1912
64.3 mm (2.5 in)
1913
84.7 mm (3.3 in)
1914
99.9 mm (3.9 in)
1915
70.7 mm (2.8 in)
1916
71.6 mm (2.8 in)
1917
82.3 mm (3.2 in)
1918
109.5 mm (4.3 in)
1919
117.2 mm (4.6 in)
1920
85.2 mm (3.4 in)
1921
77.2 mm (3.0 in)
1922
87.7 mm (3.5 in)
1923
89.7 mm (3.5 in)
1924
147.3 mm (5.8 in)
1925
106.7 mm (4.2 in)
1926
81.7 mm (3.2 in)
1927
151.2 mm (6.0 in)
1928
77.7 mm (3.1 in)
1929
58.7 mm (2.3 in)
1930
62.3 mm (2.5 in)
1931
78.4 mm (3.1 in)
1932
79.2 mm (3.1 in)
1933
88.6 mm (3.5 in)
1934
87.7 mm (3.5 in)
1935
58.2 mm (2.3 in)
1936
111.0 mm (4.4 in)
1937
93.9 mm (3.7 in)
1938
193.0 mm (7.6 in)
1939
70.2 mm (2.8 in)
1940
120.1 mm (4.7 in)
1941
69.9 mm (2.8 in)
1942
203.0 mm (8.0 in)
1943
77.0 mm (3.0 in)
1944
61.2 mm (2.4 in)
1945
93.5 mm (3.7 in)
1946
101.3 mm (4.0 in)
1947
108.2 mm (4.3 in)
1948
65.2 mm (2.6 in)
1949
76.2 mm (3.0 in)
1950
93.7 mm (3.7 in)
1951
77.5 mm (3.1 in)
1952
66.3 mm (2.6 in)
1953
118.9 mm (4.7 in)
1954
79.8 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Glencliff, 1909 to 1954. The record is 23 days in 1911, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Glencliff by year
Year
Longest dry spell (CDD)
1909
17 days
1910
13 days
1911
23 days
1912
19 days
1913
18 days
1914
23 days
1915
17 days
1916
12 days
1917
17 days
1918
22 days
1919
16 days
1920
13 days
1921
11 days
1922
11 days
1923
11 days
1924
13 days
1925
17 days
1926
7 days
1927
21 days
1928
15 days
1929
8 days
1930
16 days
1931
14 days
1932
18 days
1933
12 days
1934
18 days
1935
15 days
1936
8 days
1937
13 days
1938
17 days
1939
21 days
1940
14 days
1941
19 days
1942
14 days
1943
13 days
1944
17 days
1945
9 days
1946
9 days
1947
16 days
1948
13 days
1949
9 days
1950
11 days
1951
13 days
1952
12 days
1953
16 days
1954
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
35 years with a frost
Across 35 years with a frost, the median last spring frost at Glencliff falls on 18 May and the median first autumn frost on 26 September, which leaves a median of 128 days between them.
Fitted over all years, the growing season changes by +4.6 days per decade at this station.
Frost dates and growing season at Glencliff
Measure
Median, all years
Earliest period
Recent period (1919 to 1950)
Recent against earliest
Fitted trend
Last spring frost
18 May
n/a
17 May
n/a
-2.9 days per decade
First autumn frost
26 September
n/a
28 September
n/a
+1.7 days per decade
Growing days
128 days
n/a
131 days
n/a
+4.6 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
37 years, 1910 to 1953
A day with at least 55.6 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 179.9 mm (7.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Glencliff: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
55.6 mm (2.2 in)
5 years
74.3 mm (2.9 in)
10 years
91.1 mm (3.6 in)
25 years
119.1 mm (4.7 in)
50 years
146.2 mm (5.8 in)
Longer than the 37 years of record
100 years
179.9 mm (7.1 in)
Longer than the 37 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, 37 years of values from 1910 to 1953.
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: 175.3 mm (6.9 in) in 1942; 119.4 mm (4.7 in) in 1927; 110.2 mm (4.3 in) in 1924.
Download the Data
Data for Glencliff standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Glencliff 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.