Record envelope, standing records and threshold days for Blowing Rock 1NW (USC00310901), North Carolina, United States, with 117 years of record.
Key Facts for Blowing Rock 1NW
Blowing Rock 1NW (USC00310901) is a weather station in North Carolina, United States at 36.15 latitude and -81.70 longitude, 1,174 m (3,850 ft) above sea level.
The station reports from 1893 to 2009, 117 years of record.
1,464 records set at Blowing Rock 1NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Blowing Rock 1NW set a daily record precipitation of 71.1 mm (2.8 in) on 27 May 2009.
About the Station
Location: North Carolina, United States, 36.15 latitude, -81.70 longitude.
Elevation: 1,174 m (3,850 ft).
Period of record: 1893 to 2009, 117 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 Blowing Rock 1NW. 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 Blowing Rock 1NW, 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)
-31.1 C (-24.0 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-27.2 C (-17.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-11.1 C (12.0 F)
n/a
n/a
May
30.6 C (87.1 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
31.7 C (89.1 F)
0.6 C (33.1 F)
n/a
n/a
Jul
33.3 C (91.9 F)
5.0 C (41.0 F)
n/a
n/a
Aug
32.8 C (91.0 F)
3.9 C (39.0 F)
n/a
n/a
Sep
31.1 C (88.0 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
26.7 C (80.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Blowing Rock 1NW still stand. 1895 holds the most, with 41.
Standing records at Blowing Rock 1NW by the year they were set
Year set
Standing records
1893
16
1894
36
1895
41
1911
23
1912
16
1943
16
1944
28
1945
28
1946
33
1947
26
1948
17
1949
29
1950
39
1951
17
1953
14
1956
28
1957
24
1958
22
1959
29
1960
20
1961
28
1962
27
1963
32
1964
17
1965
12
1966
17
1967
41
1968
19
1969
11
1970
23
1971
19
1972
19
1973
16
1974
27
1975
19
1976
31
1977
32
1978
26
1979
18
1980
20
1981
20
1982
19
1983
37
1984
29
1985
37
1986
34
1987
13
1988
25
1989
21
1990
15
1991
24
1992
20
1993
16
1994
14
1995
13
1996
26
1997
18
1998
10
1999
9
2002
27
2003
10
2004
10
2005
12
2006
15
2007
19
2008
10
2009
5
All-Time Record Progression
9 new records
9 all-time records were set at Blowing Rock 1NW between 11 January 1982 and 1 July 2002. Each dot is a new record.
When Blowing Rock 1NW set new all-time records
Date
Kind
Detail
1982-01-11
Record low minimum temperature
Record low minimum temperature -28.3 C (-18.9 F)
1982-01-12
Record low minimum temperature
Record low minimum temperature -28.9 C (-20.0 F)
1983-02-10
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
1983-07-22
Record high minimum temperature
Record high minimum temperature 21.7 C (71.1 F)
1983-12-26
Record low maximum temperature
Record low maximum temperature -18.9 C (-2.0 F)
1985-01-21
Record low maximum temperature
Record low maximum temperature -20.0 C (-4.0 F)
1985-01-21
Record low minimum temperature
Record low minimum temperature -31.1 C (-24.0 F)
1993-03-14
Record snow depth
Record snow depth 91.4 cm (36.0 in)
2002-07-01
Record high minimum temperature
Record high minimum temperature 23.3 C (73.9 F)
Wettest Day of Each Month
Sep: 241.3 mm (9.5 in)
The wettest day on record for each calendar month at Blowing Rock 1NW. The most was 241.3 mm (9.5 in) on 14 September 1893.
Record daily precipitation for each month at Blowing Rock 1NW
Month
Record daily precipitation (mm)
Date
Jan
208.3 mm (8.2 in)
15 January 1995
Feb
125.7 mm (4.9 in)
13 February 1966
Mar
157.0 mm (6.2 in)
24 March 1979
Apr
118.6 mm (4.7 in)
21 April 1992
May
162.8 mm (6.4 in)
28 May 1973
Jun
137.2 mm (5.4 in)
17 June 1976
Jul
99.1 mm (3.9 in)
19 July 1964
Aug
178.8 mm (7.0 in)
17 August 1994
Sep
241.3 mm (9.5 in)
14 September 1893
Oct
128.3 mm (5.1 in)
18 October 1975
Nov
196.9 mm (7.8 in)
19 November 2003
Dec
118.1 mm (4.6 in)
11 December 1894
Period of Record Coverage
1893 to 2009
Complete yearUnder 90 percent of days
70 years of record at Blowing Rock 1NW, 1893 to 2009. 25 years have data for under 90 percent of days and are left out of rankings: 1893, 1895, 1911, 1912, 1943, 1951, 1952, 1953 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Blowing Rock 1NW, 1894 to 2007. Blue stripes are years cooler than the station's own mean of 9.7 C (49.4 F); red stripes are warmer. The coolest year was 1969, at 8.4 C (47.1 F), and the warmest was 1990, at 11.4 C (52.4 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Blowing Rock 1NW as warming stripes, 1894 to 2007
Year
Annual mean temperature
Difference from the station mean
1894
10.4 C
+0.66 C
1944
9.4 C
-0.34 C
1945
10.2 C
+0.46 C
1946
10.7 C
+0.96 C
1947
9.7 C
-0.01 C
1948
10.3 C
+0.64 C
1949
11.3 C
+1.58 C
1957
10.4 C
+0.70 C
1958
9.1 C
-0.61 C
1959
10.4 C
+0.69 C
1960
8.7 C
-1.00 C
1961
9.1 C
-0.58 C
1962
9.4 C
-0.30 C
1963
9.0 C
-0.69 C
1964
9.5 C
-0.22 C
1965
9.7 C
+0.05 C
1966
8.9 C
-0.83 C
1967
9.0 C
-0.73 C
1968
8.8 C
-0.90 C
1969
8.4 C
-1.31 C
1970
9.5 C
-0.24 C
1971
9.7 C
-0.03 C
1972
9.2 C
-0.48 C
1973
9.6 C
-0.05 C
1974
9.6 C
-0.09 C
1975
10.0 C
+0.34 C
1976
9.3 C
-0.37 C
1978
9.6 C
-0.09 C
1981
9.0 C
-0.69 C
1982
9.7 C
+0.03 C
1983
9.0 C
-0.71 C
1984
9.8 C
+0.08 C
1985
10.0 C
+0.32 C
1986
10.7 C
+0.99 C
1987
10.0 C
+0.26 C
1988
9.4 C
-0.33 C
1989
9.7 C
-0.01 C
1990
11.4 C
+1.66 C
1991
10.7 C
+0.99 C
1992
9.2 C
-0.46 C
1994
8.5 C
-1.15 C
1996
8.7 C
-0.99 C
1998
11.0 C
+1.34 C
2005
9.8 C
+0.13 C
2006
10.3 C
+0.56 C
2007
10.4 C
+0.69 C
The fitted trend in annual mean temperature here over 1894 to 2007 is -0.01 C (-0.12 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.21 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 Blowing Rock 1NW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.12 to 0.10) per decade
-0.02 F (-0.21 to 0.17) per decade
1894 to 2007
46
Not clearly different from zero
Mean daily maximum
-0.07 C (-0.19 to 0.04) per decade
-0.1 F (-0.3 to 0.1) per decade
1894 to 2007
46
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1894 to 2007
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
1893 to 2009
Yearly extremes at Blowing Rock 1NW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.3 C (91.9 F)
1956
29.4 C (84.9 F)
70
Coldest night (TNn)
-31.1 C (-24.0 F)
1985
-18.9 C (-2.0 F)
70
Wettest day (Rx1day)
241.3 mm (9.5 in)
1893
84.3 mm (3.3 in)
70
Wettest five days (Rx5day)
331.7 mm (13.1 in)
2004
139.1 mm (5.5 in)
70
Longest dry spell (CDD)
33 days
1952
15 days
70
Hottest day (TXx)
The hottest day of the year at Blowing Rock 1NW, 1893 to 2009. The record is 33.3 C (91.9 F) in 1956, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Blowing Rock 1NW by year
Year
Hottest day (TXx)
1893
30.0 C (86.0 F)
1894
28.3 C (82.9 F)
1895
29.4 C (84.9 F)
1911
31.7 C (89.1 F)
1912
28.3 C (82.9 F)
1943
28.9 C (84.0 F)
1944
29.4 C (84.9 F)
1945
28.9 C (84.0 F)
1946
28.9 C (84.0 F)
1947
28.9 C (84.0 F)
1948
30.0 C (86.0 F)
1949
30.0 C (86.0 F)
1950
27.2 C (81.0 F)
1951
28.9 C (84.0 F)
1952
11.1 C (52.0 F)
1953
30.0 C (86.0 F)
1954
23.9 C (75.0 F)
1956
33.3 C (91.9 F)
1957
30.0 C (86.0 F)
1958
30.0 C (86.0 F)
1959
31.1 C (88.0 F)
1960
28.3 C (82.9 F)
1961
28.3 C (82.9 F)
1962
28.3 C (82.9 F)
1963
29.4 C (84.9 F)
1964
30.0 C (86.0 F)
1965
28.3 C (82.9 F)
1966
30.0 C (86.0 F)
1967
26.7 C (80.1 F)
1968
30.0 C (86.0 F)
1969
31.7 C (89.1 F)
1970
29.4 C (84.9 F)
1971
28.9 C (84.0 F)
1972
29.4 C (84.9 F)
1973
27.8 C (82.0 F)
1974
27.8 C (82.0 F)
1975
30.0 C (86.0 F)
1976
30.6 C (87.1 F)
1977
32.8 C (91.0 F)
1978
32.8 C (91.0 F)
1979
32.2 C (90.0 F)
1980
32.2 C (90.0 F)
1981
31.1 C (88.0 F)
1982
28.3 C (82.9 F)
1983
31.7 C (89.1 F)
1984
28.9 C (84.0 F)
1985
28.9 C (84.0 F)
1986
29.4 C (84.9 F)
1987
29.4 C (84.9 F)
1988
31.7 C (89.1 F)
1989
27.8 C (82.0 F)
1990
28.9 C (84.0 F)
1991
28.9 C (84.0 F)
1992
28.3 C (82.9 F)
1993
33.3 C (91.9 F)
1994
27.8 C (82.0 F)
1995
29.4 C (84.9 F)
1996
31.1 C (88.0 F)
1997
28.9 C (84.0 F)
1998
29.4 C (84.9 F)
1999
27.8 C (82.0 F)
2001
25.0 C (77.0 F)
2002
32.2 C (90.0 F)
2003
30.6 C (87.1 F)
2004
26.7 C (80.1 F)
2005
29.4 C (84.9 F)
2006
28.9 C (84.0 F)
2007
30.0 C (86.0 F)
2008
31.1 C (88.0 F)
2009
26.7 C (80.1 F)
Coldest night (TNn)
The coldest night of the year at Blowing Rock 1NW, 1893 to 2009. The record is -31.1 C (-24.0 F) in 1985, marked on the chart; the median year is -18.9 C (-2.0 F).
Coldest night (TNn) at Blowing Rock 1NW by year
Year
Coldest night (TNn)
1893
-21.7 C (-7.1 F)
1894
-22.2 C (-8.0 F)
1895
-27.8 C (-18.0 F)
1911
-13.3 C (8.1 F)
1912
-17.2 C (1.0 F)
1943
-16.1 C (3.0 F)
1944
-17.8 C (0.0 F)
1945
-18.9 C (-2.0 F)
1946
-15.0 C (5.0 F)
1947
-20.0 C (-4.0 F)
1948
-18.9 C (-2.0 F)
1949
-13.3 C (8.1 F)
1950
-21.7 C (-7.1 F)
1951
-18.9 C (-2.0 F)
1952
-5.6 C (21.9 F)
1953
-11.1 C (12.0 F)
1954
-7.2 C (19.0 F)
1956
-11.1 C (12.0 F)
1957
-21.1 C (-6.0 F)
1958
-23.9 C (-11.0 F)
1959
-19.4 C (-2.9 F)
1960
-20.6 C (-5.1 F)
1961
-21.1 C (-6.0 F)
1962
-22.8 C (-9.0 F)
1963
-26.7 C (-16.1 F)
1964
-16.7 C (1.9 F)
1965
-16.7 C (1.9 F)
1966
-26.1 C (-15.0 F)
1967
-23.9 C (-11.0 F)
1968
-17.2 C (1.0 F)
1969
-17.8 C (0.0 F)
1970
-24.4 C (-11.9 F)
1971
-20.0 C (-4.0 F)
1972
-25.0 C (-13.0 F)
1973
-18.3 C (-0.9 F)
1974
-15.0 C (5.0 F)
1975
-17.8 C (0.0 F)
1976
-18.9 C (-2.0 F)
1977
-27.2 C (-17.0 F)
1978
-23.9 C (-11.0 F)
1979
-22.2 C (-8.0 F)
1980
-20.6 C (-5.1 F)
1981
-22.2 C (-8.0 F)
1982
-28.9 C (-20.0 F)
1983
-25.6 C (-14.1 F)
1984
-16.7 C (1.9 F)
1985
-31.1 C (-24.0 F)
1986
-25.6 C (-14.1 F)
1987
-17.8 C (0.0 F)
1988
-16.7 C (1.9 F)
1989
-22.2 C (-8.0 F)
1990
-13.3 C (8.1 F)
1991
-20.6 C (-5.1 F)
1992
-17.8 C (0.0 F)
1993
-16.7 C (1.9 F)
1994
-26.7 C (-16.1 F)
1995
-18.9 C (-2.0 F)
1996
-22.8 C (-9.0 F)
1997
-20.0 C (-4.0 F)
1998
-16.1 C (3.0 F)
1999
-16.7 C (1.9 F)
2001
8.9 C (48.0 F)
2002
-2.2 C (28.0 F)
2003
-11.1 C (12.0 F)
2004
-21.1 C (-6.0 F)
2005
-17.2 C (1.0 F)
2006
-16.1 C (3.0 F)
2007
-17.2 C (1.0 F)
2008
-17.2 C (1.0 F)
2009
-20.6 C (-5.1 F)
Wettest day (Rx1day)
The wettest day of the year at Blowing Rock 1NW, 1893 to 2009. The record is 241.3 mm (9.5 in) in 1893, marked on the chart; the median year is 84.3 mm (3.3 in).
Wettest day (Rx1day) at Blowing Rock 1NW by year
Year
Wettest day (Rx1day)
1893
241.3 mm (9.5 in)
1894
118.1 mm (4.6 in)
1895
101.6 mm (4.0 in)
1911
55.9 mm (2.2 in)
1912
51.1 mm (2.0 in)
1943
50.8 mm (2.0 in)
1944
57.2 mm (2.3 in)
1945
101.6 mm (4.0 in)
1946
61.0 mm (2.4 in)
1947
57.2 mm (2.3 in)
1948
76.2 mm (3.0 in)
1949
78.7 mm (3.1 in)
1950
53.3 mm (2.1 in)
1951
49.5 mm (1.9 in)
1952
45.7 mm (1.8 in)
1953
58.4 mm (2.3 in)
1954
20.3 mm (0.8 in)
1956
68.1 mm (2.7 in)
1957
90.7 mm (3.6 in)
1958
80.8 mm (3.2 in)
1959
159.5 mm (6.3 in)
1960
78.0 mm (3.1 in)
1961
68.1 mm (2.7 in)
1962
64.0 mm (2.5 in)
1963
69.3 mm (2.7 in)
1964
110.5 mm (4.4 in)
1965
64.8 mm (2.6 in)
1966
125.7 mm (4.9 in)
1967
70.6 mm (2.8 in)
1968
109.0 mm (4.3 in)
1969
84.3 mm (3.3 in)
1970
129.8 mm (5.1 in)
1971
60.2 mm (2.4 in)
1972
111.3 mm (4.4 in)
1973
162.8 mm (6.4 in)
1974
90.9 mm (3.6 in)
1975
128.3 mm (5.1 in)
1976
137.2 mm (5.4 in)
1977
119.1 mm (4.7 in)
1978
91.7 mm (3.6 in)
1979
157.0 mm (6.2 in)
1980
68.6 mm (2.7 in)
1981
62.5 mm (2.5 in)
1982
59.7 mm (2.4 in)
1983
82.6 mm (3.3 in)
1984
116.8 mm (4.6 in)
1985
84.3 mm (3.3 in)
1986
66.0 mm (2.6 in)
1987
67.3 mm (2.6 in)
1988
88.6 mm (3.5 in)
1989
100.6 mm (4.0 in)
1990
121.7 mm (4.8 in)
1991
113.0 mm (4.4 in)
1992
118.6 mm (4.7 in)
1993
90.9 mm (3.6 in)
1994
178.8 mm (7.0 in)
1995
208.3 mm (8.2 in)
1996
148.8 mm (5.9 in)
1997
109.2 mm (4.3 in)
1998
102.9 mm (4.1 in)
1999
66.8 mm (2.6 in)
2001
36.8 mm (1.4 in)
2002
37.8 mm (1.5 in)
2003
196.9 mm (7.8 in)
2004
229.1 mm (9.0 in)
2005
109.7 mm (4.3 in)
2006
71.9 mm (2.8 in)
2007
65.5 mm (2.6 in)
2008
130.3 mm (5.1 in)
2009
71.1 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Blowing Rock 1NW, 1893 to 2009. The record is 331.7 mm (13.1 in) in 2004, marked on the chart; the median year is 139.1 mm (5.5 in).
Wettest five days (Rx5day) at Blowing Rock 1NW by year
Year
Wettest five days (Rx5day)
1893
241.3 mm (9.5 in)
1894
118.1 mm (4.6 in)
1895
111.8 mm (4.4 in)
1911
73.6 mm (2.9 in)
1912
79.8 mm (3.1 in)
1943
115.7 mm (4.6 in)
1944
97.8 mm (3.9 in)
1945
233.8 mm (9.2 in)
1946
134.6 mm (5.3 in)
1947
94.8 mm (3.7 in)
1948
188.0 mm (7.4 in)
1949
155.5 mm (6.1 in)
1950
150.4 mm (5.9 in)
1951
117.6 mm (4.6 in)
1952
80.5 mm (3.2 in)
1953
117.8 mm (4.6 in)
1954
35.3 mm (1.4 in)
1956
127.1 mm (5.0 in)
1957
161.6 mm (6.4 in)
1958
142.8 mm (5.6 in)
1959
181.3 mm (7.1 in)
1960
128.1 mm (5.0 in)
1961
119.6 mm (4.7 in)
1962
97.7 mm (3.8 in)
1963
104.1 mm (4.1 in)
1964
169.7 mm (6.7 in)
1965
92.2 mm (3.6 in)
1966
189.4 mm (7.5 in)
1967
206.1 mm (8.1 in)
1968
186.5 mm (7.3 in)
1969
125.7 mm (4.9 in)
1970
250.2 mm (9.9 in)
1971
134.9 mm (5.3 in)
1972
238.6 mm (9.4 in)
1973
201.5 mm (7.9 in)
1974
171.3 mm (6.7 in)
1975
170.7 mm (6.7 in)
1976
222.4 mm (8.8 in)
1977
129.3 mm (5.1 in)
1978
137.7 mm (5.4 in)
1979
223.0 mm (8.8 in)
1980
125.5 mm (4.9 in)
1981
121.2 mm (4.8 in)
1982
112.8 mm (4.4 in)
1983
106.2 mm (4.2 in)
1984
160.5 mm (6.3 in)
1985
183.2 mm (7.2 in)
1986
121.5 mm (4.8 in)
1987
135.6 mm (5.3 in)
1988
106.4 mm (4.2 in)
1989
157.0 mm (6.2 in)
1990
208.8 mm (8.2 in)
1991
154.8 mm (6.1 in)
1992
233.7 mm (9.2 in)
1993
163.8 mm (6.4 in)
1994
275.3 mm (10.8 in)
1995
255.8 mm (10.1 in)
1996
161.5 mm (6.4 in)
1997
140.5 mm (5.5 in)
1998
155.8 mm (6.1 in)
1999
120.3 mm (4.7 in)
2001
54.9 mm (2.2 in)
2002
55.9 mm (2.2 in)
2003
110.6 mm (4.4 in)
2004
331.7 mm (13.1 in)
2005
128.0 mm (5.0 in)
2006
156.3 mm (6.2 in)
2007
118.6 mm (4.7 in)
2008
188.2 mm (7.4 in)
2009
170.6 mm (6.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Blowing Rock 1NW, 1893 to 2009. The record is 33 days in 1952, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Blowing Rock 1NW by year
Year
Longest dry spell (CDD)
1893
24 days
1894
20 days
1895
20 days
1911
13 days
1912
13 days
1943
24 days
1944
18 days
1945
21 days
1946
18 days
1947
14 days
1948
15 days
1949
16 days
1950
14 days
1951
24 days
1952
33 days
1953
17 days
1954
6 days
1956
19 days
1957
14 days
1958
20 days
1959
18 days
1960
12 days
1961
15 days
1962
14 days
1963
23 days
1964
13 days
1965
16 days
1966
11 days
1967
20 days
1968
17 days
1969
13 days
1970
15 days
1971
14 days
1972
11 days
1973
14 days
1974
17 days
1975
9 days
1976
15 days
1977
13 days
1978
31 days
1979
12 days
1980
17 days
1981
21 days
1982
11 days
1983
19 days
1984
30 days
1985
16 days
1986
19 days
1987
12 days
1988
16 days
1989
16 days
1990
13 days
1991
9 days
1992
18 days
1993
17 days
1994
13 days
1995
14 days
1996
13 days
1997
16 days
1998
15 days
1999
9 days
2001
5 days
2002
7 days
2003
7 days
2004
10 days
2005
16 days
2006
11 days
2007
16 days
2008
13 days
2009
11 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 Blowing Rock 1NW falls on 30 April and the median first autumn frost on 10 October, which leaves a median of 162 days between them.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Blowing Rock 1NW
Measure
Median, all years
Earliest period
Recent period (1966 to 2007)
Recent against earliest
Fitted trend
Last spring frost
30 April
n/a
30 April
n/a
-1.6 days per decade
First autumn frost
10 October
n/a
10 October
n/a
+0.8 days per decade
Growing days
162 days
n/a
165 days
n/a
+2.4 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
48 years, 1893 to 2008
A day with at least 91.0 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 238.1 mm (9.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Blowing Rock 1NW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
91.0 mm (3.6 in)
5 years
123.2 mm (4.9 in)
10 years
147.1 mm (5.8 in)
25 years
180.7 mm (7.1 in)
50 years
208.3 mm (8.2 in)
Longer than the 48 years of record
100 years
238.1 mm (9.4 in)
Longer than the 48 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, 48 years of values from 1893 to 2008.
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: 241.3 mm (9.5 in) in 1893; 178.8 mm (7.0 in) in 1994; 162.8 mm (6.4 in) in 1973.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Blowing Rock 1NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Blowing Rock 1NW 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.