Record envelope, standing records and threshold days for Black Mtn 2 W (USC00310843), North Carolina, United States, with 62 years of record.
Key Facts for Black Mtn 2 W
Black Mtn 2 W (USC00310843) is a weather station in North Carolina, United States at 35.61 latitude and -82.36 longitude, 698 m (2,290 ft) above sea level.
The station reports from 1949 to 2010, 62 years of record.
1,464 records set at Black Mtn 2 W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Black Mtn 2 W set a daily record precipitation of 38.6 mm (1.5 in) on 25 December 2009.
About the Station
Location: North Carolina, United States, 35.61 latitude, -82.36 longitude.
Elevation: 698 m (2,290 ft).
Period of record: 1949 to 2010, 62 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 Black Mtn 2 W. 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 Black Mtn 2 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.1 C (79.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-13.9 C (7.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-7.8 C (18.0 F)
n/a
n/a
May
32.2 C (90.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
35.6 C (96.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
37.2 C (99.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
36.1 C (97.0 F)
6.1 C (43.0 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-16.1 C (3.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Black Mtn 2 W still stand. 1954 holds the most, with 55.
Standing records at Black Mtn 2 W by the year they were set
Year set
Standing records
1949
3
1950
53
1951
30
1952
47
1953
36
1954
55
1955
23
1956
27
1957
31
1958
32
1959
25
1960
12
1961
25
1962
28
1963
36
1964
25
1965
21
1966
16
1967
30
1968
18
1969
21
1970
35
1971
24
1972
24
1973
15
1974
31
1975
16
1976
28
1977
30
1978
23
1979
17
1980
35
1981
14
1982
17
1983
28
1984
39
1985
42
1986
31
1987
18
1988
20
1989
18
1990
15
1991
33
1992
20
1993
16
1994
11
1995
19
1996
26
1997
29
1998
30
1999
21
2000
17
2001
17
2002
11
2003
11
2004
13
2005
12
2006
15
2007
16
2008
19
2009
14
All-Time Record Progression
6 new records
6 all-time records were set at Black Mtn 2 W between 20 July 1980 and 8 September 2004. Each dot is a new record.
When Black Mtn 2 W set new all-time records
Date
Kind
Detail
1980-07-20
Record high maximum temperature
Record high maximum temperature 37.2 C (99.0 F)
1983-12-25
Record low maximum temperature
Record low maximum temperature -14.4 C (6.1 F)
1983-12-25
Record low minimum temperature
Record low minimum temperature -25.0 C (-13.0 F)
1985-01-21
Record low minimum temperature
Record low minimum temperature -25.6 C (-14.1 F)
1994-08-17
Record daily precipitation
Record daily precipitation 172.7 mm (6.8 in)
2004-09-08
Record daily precipitation
Record daily precipitation 254.0 mm (10.0 in)
Wettest Day of Each Month
Sep: 254.0 mm (10.0 in)
The wettest day on record for each calendar month at Black Mtn 2 W. The most was 254.0 mm (10.0 in) on 8 September 2004.
Record daily precipitation for each month at Black Mtn 2 W
Month
Record daily precipitation (mm)
Date
Jan
132.1 mm (5.2 in)
14 January 1995
Feb
94.0 mm (3.7 in)
13 February 1966
Mar
119.4 mm (4.7 in)
12 March 1963
Apr
93.5 mm (3.7 in)
4 April 1974
May
152.9 mm (6.0 in)
29 May 1976
Jun
131.1 mm (5.2 in)
20 June 1972
Jul
71.1 mm (2.8 in)
7 July 1967
Aug
172.7 mm (6.8 in)
17 August 1994
Sep
254.0 mm (10.0 in)
8 September 2004
Oct
101.6 mm (4.0 in)
4 October 1964
Nov
158.5 mm (6.2 in)
6 November 1977
Dec
175.3 mm (6.9 in)
20 December 2009
Period of Record Coverage
1949 to 2009
Complete yearUnder 90 percent of days
61 years of record at Black Mtn 2 W, 1949 to 2009. 23 years have data for under 90 percent of days and are left out of rankings: 1949, 1960, 1974, 1978, 1979, 1980, 1981, 1982 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Black Mtn 2 W, 1950 to 2009. Blue stripes are years cooler than the station's own mean of 13.0 C (55.5 F); red stripes are warmer. The coolest year was 1983, at 11.6 C (52.8 F), and the warmest was 1990, at 14.6 C (58.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Black Mtn 2 W as warming stripes, 1950 to 2009
Year
Annual mean temperature
Difference from the station mean
1950
12.9 C
-0.15 C
1951
12.6 C
-0.45 C
1952
13.2 C
+0.12 C
1953
13.2 C
+0.15 C
1954
12.8 C
-0.27 C
1955
12.7 C
-0.38 C
1956
13.4 C
+0.35 C
1957
13.3 C
+0.27 C
1959
13.4 C
+0.38 C
1961
12.7 C
-0.40 C
1962
13.0 C
-0.05 C
1963
12.3 C
-0.75 C
1964
12.8 C
-0.24 C
1965
13.3 C
+0.23 C
1966
12.3 C
-0.79 C
1967
12.9 C
-0.20 C
1968
12.9 C
-0.18 C
1969
12.7 C
-0.34 C
1970
13.6 C
+0.57 C
1971
13.8 C
+0.73 C
1972
13.4 C
+0.30 C
1973
13.7 C
+0.65 C
1975
13.6 C
+0.56 C
1976
12.8 C
-0.24 C
1977
13.3 C
+0.24 C
1983
11.6 C
-1.49 C
1984
12.7 C
-0.35 C
1985
13.7 C
+0.69 C
1986
14.1 C
+1.05 C
1987
13.3 C
+0.26 C
1988
12.5 C
-0.55 C
1989
13.2 C
+0.13 C
1990
14.6 C
+1.50 C
1991
14.1 C
+1.01 C
1992
12.9 C
-0.11 C
1994
13.0 C
-0.10 C
1995
11.9 C
-1.20 C
1996
12.4 C
-0.62 C
1998
13.8 C
+0.70 C
2003
12.6 C
-0.45 C
2004
13.0 C
-0.05 C
2005
12.9 C
-0.17 C
2006
12.9 C
-0.12 C
2007
13.3 C
+0.23 C
2008
12.7 C
-0.39 C
2009
12.7 C
-0.31 C
The fitted trend in annual mean temperature here over 1950 to 2009 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 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Black Mtn 2 W
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
1950 to 2009
46
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.12 to 0.10) per decade
-0.02 F (-0.22 to 0.19) per decade
1950 to 2009
46
Not clearly different from zero
Mean daily minimum
0.01 C (-0.10 to 0.13) per decade
0.02 F (-0.18 to 0.23) per decade
1950 to 2009
46
Not clearly different from zero
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
1949 to 2010
Yearly extremes at Black Mtn 2 W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1980
33.3 C (91.9 F)
61
Coldest night (TNn)
-25.6 C (-14.1 F)
1985
-15.6 C (3.9 F)
61
Wettest day (Rx1day)
254.0 mm (10.0 in)
2004
70.5 mm (2.8 in)
62
Wettest five days (Rx5day)
345.5 mm (13.6 in)
2009
116.8 mm (4.6 in)
62
Longest dry spell (CDD)
42 days
2001
19 days
62
Hottest day (TXx)
The hottest day of the year at Black Mtn 2 W, 1949 to 2010. The record is 37.2 C (99.0 F) in 1980, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Black Mtn 2 W by year
Year
Hottest day (TXx)
1949
27.2 C (81.0 F)
1950
32.8 C (91.0 F)
1951
33.3 C (91.9 F)
1952
36.7 C (98.1 F)
1953
34.4 C (93.9 F)
1954
35.0 C (95.0 F)
1955
32.2 C (90.0 F)
1956
33.3 C (91.9 F)
1957
33.9 C (93.0 F)
1958
32.2 C (90.0 F)
1959
33.9 C (93.0 F)
1960
31.7 C (89.1 F)
1961
31.7 C (89.1 F)
1962
32.8 C (91.0 F)
1963
32.2 C (90.0 F)
1964
33.9 C (93.0 F)
1965
32.8 C (91.0 F)
1966
33.3 C (91.9 F)
1967
31.1 C (88.0 F)
1968
35.0 C (95.0 F)
1969
33.9 C (93.0 F)
1970
34.4 C (93.9 F)
1971
32.2 C (90.0 F)
1972
32.2 C (90.0 F)
1973
33.3 C (91.9 F)
1974
32.2 C (90.0 F)
1975
33.9 C (93.0 F)
1976
32.8 C (91.0 F)
1977
34.4 C (93.9 F)
1978
34.4 C (93.9 F)
1979
33.3 C (91.9 F)
1980
37.2 C (99.0 F)
1981
32.8 C (91.0 F)
1982
32.2 C (90.0 F)
1983
36.1 C (97.0 F)
1984
32.2 C (90.0 F)
1985
33.3 C (91.9 F)
1986
35.6 C (96.1 F)
1987
34.4 C (93.9 F)
1988
36.1 C (97.0 F)
1989
31.7 C (89.1 F)
1990
33.9 C (93.0 F)
1991
32.2 C (90.0 F)
1992
32.8 C (91.0 F)
1993
34.4 C (93.9 F)
1994
31.1 C (88.0 F)
1995
31.1 C (88.0 F)
1996
32.2 C (90.0 F)
1997
32.8 C (91.0 F)
1998
35.6 C (96.1 F)
1999
35.0 C (95.0 F)
2000
32.8 C (91.0 F)
2001
31.7 C (89.1 F)
2002
33.3 C (91.9 F)
2003
31.7 C (89.1 F)
2004
31.1 C (88.0 F)
2005
33.9 C (93.0 F)
2006
33.9 C (93.0 F)
2007
33.9 C (93.0 F)
2008
33.9 C (93.0 F)
2009
32.2 C (90.0 F)
2010
n/a
Coldest night (TNn)
The coldest night of the year at Black Mtn 2 W, 1949 to 2010. The record is -25.6 C (-14.1 F) in 1985, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Black Mtn 2 W by year
Year
Coldest night (TNn)
1949
-10.0 C (14.0 F)
1950
-16.1 C (3.0 F)
1951
-17.8 C (0.0 F)
1952
-14.4 C (6.1 F)
1953
-13.3 C (8.1 F)
1954
-14.4 C (6.1 F)
1955
-16.7 C (1.9 F)
1956
-9.4 C (15.1 F)
1957
-18.3 C (-0.9 F)
1958
-21.1 C (-6.0 F)
1959
-15.0 C (5.0 F)
1960
-15.6 C (3.9 F)
1961
-15.6 C (3.9 F)
1962
-21.7 C (-7.1 F)
1963
-22.8 C (-9.0 F)
1964
-17.8 C (0.0 F)
1965
-15.0 C (5.0 F)
1966
-23.3 C (-9.9 F)
1967
-18.3 C (-0.9 F)
1968
-13.9 C (7.0 F)
1969
-16.1 C (3.0 F)
1970
-20.0 C (-4.0 F)
1971
-15.0 C (5.0 F)
1972
-18.9 C (-2.0 F)
1973
-14.4 C (6.1 F)
1974
-11.1 C (12.0 F)
1975
-15.0 C (5.0 F)
1976
-15.6 C (3.9 F)
1977
-19.4 C (-2.9 F)
1978
-16.7 C (1.9 F)
1979
-15.6 C (3.9 F)
1980
-15.6 C (3.9 F)
1981
-16.7 C (1.9 F)
1982
-16.7 C (1.9 F)
1983
-25.0 C (-13.0 F)
1984
-19.4 C (-2.9 F)
1985
-25.6 C (-14.1 F)
1986
-19.4 C (-2.9 F)
1987
-18.3 C (-0.9 F)
1988
-16.7 C (1.9 F)
1989
-20.0 C (-4.0 F)
1990
-11.7 C (10.9 F)
1991
-16.1 C (3.0 F)
1992
-12.8 C (9.0 F)
1993
-11.7 C (10.9 F)
1994
-19.4 C (-2.9 F)
1995
-16.1 C (3.0 F)
1996
-21.7 C (-7.1 F)
1997
-15.6 C (3.9 F)
1998
-13.9 C (7.0 F)
1999
-12.8 C (9.0 F)
2000
-12.2 C (10.0 F)
2001
-15.6 C (3.9 F)
2002
-11.1 C (12.0 F)
2003
-16.7 C (1.9 F)
2004
-14.4 C (6.1 F)
2005
-13.3 C (8.1 F)
2006
-11.7 C (10.9 F)
2007
-13.3 C (8.1 F)
2008
-13.9 C (7.0 F)
2009
-15.0 C (5.0 F)
2010
n/a
Wettest day (Rx1day)
The wettest day of the year at Black Mtn 2 W, 1949 to 2010. The record is 254.0 mm (10.0 in) in 2004, marked on the chart; the median year is 70.5 mm (2.8 in).
Wettest day (Rx1day) at Black Mtn 2 W by year
Year
Wettest day (Rx1day)
1949
50.8 mm (2.0 in)
1950
89.7 mm (3.5 in)
1951
38.6 mm (1.5 in)
1952
76.2 mm (3.0 in)
1953
86.9 mm (3.4 in)
1954
61.0 mm (2.4 in)
1955
62.2 mm (2.4 in)
1956
63.5 mm (2.5 in)
1957
82.8 mm (3.3 in)
1958
104.9 mm (4.1 in)
1959
137.2 mm (5.4 in)
1960
48.3 mm (1.9 in)
1961
71.1 mm (2.8 in)
1962
113.3 mm (4.5 in)
1963
119.4 mm (4.7 in)
1964
101.6 mm (4.0 in)
1965
69.9 mm (2.8 in)
1966
94.0 mm (3.7 in)
1967
78.7 mm (3.1 in)
1968
84.6 mm (3.3 in)
1969
76.2 mm (3.0 in)
1970
50.3 mm (2.0 in)
1971
54.6 mm (2.1 in)
1972
131.1 mm (5.2 in)
1973
63.5 mm (2.5 in)
1974
93.5 mm (3.7 in)
1975
79.8 mm (3.1 in)
1976
152.9 mm (6.0 in)
1977
158.5 mm (6.2 in)
1978
83.8 mm (3.3 in)
1979
58.4 mm (2.3 in)
1980
50.8 mm (2.0 in)
1981
43.9 mm (1.7 in)
1982
66.5 mm (2.6 in)
1983
83.8 mm (3.3 in)
1984
64.0 mm (2.5 in)
1985
68.1 mm (2.7 in)
1986
48.3 mm (1.9 in)
1987
107.2 mm (4.2 in)
1988
49.5 mm (1.9 in)
1989
50.3 mm (2.0 in)
1990
85.1 mm (3.4 in)
1991
62.5 mm (2.5 in)
1992
52.1 mm (2.1 in)
1993
57.2 mm (2.3 in)
1994
172.7 mm (6.8 in)
1995
132.1 mm (5.2 in)
1996
86.9 mm (3.4 in)
1997
57.2 mm (2.3 in)
1998
110.5 mm (4.4 in)
1999
51.1 mm (2.0 in)
2000
50.8 mm (2.0 in)
2001
33.5 mm (1.3 in)
2002
53.3 mm (2.1 in)
2003
101.6 mm (4.0 in)
2004
254.0 mm (10.0 in)
2005
55.1 mm (2.2 in)
2006
63.5 mm (2.5 in)
2007
53.3 mm (2.1 in)
2008
101.6 mm (4.0 in)
2009
175.3 mm (6.9 in)
2010
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Black Mtn 2 W, 1949 to 2010. The record is 345.5 mm (13.6 in) in 2009, marked on the chart; the median year is 116.8 mm (4.6 in).
Wettest five days (Rx5day) at Black Mtn 2 W by year
Year
Wettest five days (Rx5day)
1949
116.1 mm (4.6 in)
1950
208.2 mm (8.2 in)
1951
76.7 mm (3.0 in)
1952
95.1 mm (3.7 in)
1953
89.9 mm (3.5 in)
1954
150.2 mm (5.9 in)
1955
87.9 mm (3.5 in)
1956
86.9 mm (3.4 in)
1957
88.9 mm (3.5 in)
1958
121.9 mm (4.8 in)
1959
150.4 mm (5.9 in)
1960
117.5 mm (4.6 in)
1961
144.5 mm (5.7 in)
1962
124.7 mm (4.9 in)
1963
137.2 mm (5.4 in)
1964
141.2 mm (5.6 in)
1965
117.6 mm (4.6 in)
1966
133.6 mm (5.3 in)
1967
168.9 mm (6.6 in)
1968
205.7 mm (8.1 in)
1969
100.6 mm (4.0 in)
1970
93.4 mm (3.7 in)
1971
158.0 mm (6.2 in)
1972
219.2 mm (8.6 in)
1973
78.7 mm (3.1 in)
1974
110.5 mm (4.4 in)
1975
113.9 mm (4.5 in)
1976
196.1 mm (7.7 in)
1977
283.2 mm (11.1 in)
1978
153.1 mm (6.0 in)
1979
100.9 mm (4.0 in)
1980
115.4 mm (4.5 in)
1981
47.9 mm (1.9 in)
1982
93.2 mm (3.7 in)
1983
163.1 mm (6.4 in)
1984
95.5 mm (3.8 in)
1985
117.6 mm (4.6 in)
1986
62.0 mm (2.4 in)
1987
143.2 mm (5.6 in)
1988
65.0 mm (2.6 in)
1989
84.9 mm (3.3 in)
1990
124.7 mm (4.9 in)
1991
132.4 mm (5.2 in)
1992
105.7 mm (4.2 in)
1993
93.6 mm (3.7 in)
1994
212.9 mm (8.4 in)
1995
212.1 mm (8.4 in)
1996
105.7 mm (4.2 in)
1997
101.1 mm (4.0 in)
1998
128.8 mm (5.1 in)
1999
72.4 mm (2.9 in)
2000
69.4 mm (2.7 in)
2001
51.6 mm (2.0 in)
2002
83.8 mm (3.3 in)
2003
142.2 mm (5.6 in)
2004
315.5 mm (12.4 in)
2005
84.3 mm (3.3 in)
2006
132.0 mm (5.2 in)
2007
88.9 mm (3.5 in)
2008
153.7 mm (6.1 in)
2009
345.5 mm (13.6 in)
2010
4.8 mm (0.19 in)
Longest dry spell (CDD)
The longest dry spell of the year at Black Mtn 2 W, 1949 to 2010. The record is 42 days in 2001, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Black Mtn 2 W by year
Year
Longest dry spell (CDD)
1949
10 days
1950
16 days
1951
23 days
1952
31 days
1953
23 days
1954
23 days
1955
24 days
1956
20 days
1957
15 days
1958
17 days
1959
17 days
1960
22 days
1961
16 days
1962
29 days
1963
23 days
1964
15 days
1965
19 days
1966
10 days
1967
19 days
1968
26 days
1969
11 days
1970
17 days
1971
15 days
1972
13 days
1973
16 days
1974
23 days
1975
11 days
1976
17 days
1977
17 days
1978
33 days
1979
21 days
1980
30 days
1981
20 days
1982
10 days
1983
18 days
1984
30 days
1985
23 days
1986
19 days
1987
30 days
1988
16 days
1989
16 days
1990
15 days
1991
19 days
1992
16 days
1993
17 days
1994
10 days
1995
15 days
1996
17 days
1997
24 days
1998
25 days
1999
22 days
2000
28 days
2001
42 days
2002
20 days
2003
26 days
2004
14 days
2005
32 days
2006
27 days
2007
22 days
2008
17 days
2009
35 days
2010
31 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Black Mtn 2 W falls on 25 April and the median first autumn frost on 18 October, which leaves a median of 178 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 Black Mtn 2 W
Measure
Median, all years
Earliest period
Recent period (1968 to 2009)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
26 April
n/a
-0.8 days per decade
First autumn frost
18 October
n/a
18 October
n/a
+0.1 days per decade
Growing days
178 days
n/a
176 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
57 years, 1950 to 2009
A day with at least 75.1 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 246.4 mm (9.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Black Mtn 2 W: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
75.1 mm (3.0 in)
5 years
107.5 mm (4.2 in)
10 years
133.5 mm (5.3 in)
25 years
172.7 mm (6.8 in)
50 years
207.0 mm (8.1 in)
100 years
246.4 mm (9.7 in)
Longer than the 57 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, 57 years of values from 1950 to 2009.
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: 254.0 mm (10.0 in) in 2004; 175.3 mm (6.9 in) in 2009; 172.7 mm (6.8 in) in 1994.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Black Mtn 2 W, at 1959. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1959 ran 0.5 C (0.9 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Black Mtn 2 W, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1959
+0.5
+0.9
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 Black Mtn 2 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Black Mtn 2 W 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.