Record envelope, standing records and threshold days for Mt Vernon (USC00155648), Kentucky, United States, with 61 years of record.
Key Facts for Mt Vernon
Mt Vernon (USC00155648) is a weather station in Kentucky, United States at 37.35 latitude and -84.34 longitude, 354 m (1,160 ft) above sea level.
The station reports from 1956 to 2016, 61 years of record.
1,464 records set at Mt Vernon still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mt Vernon set a daily record high maximum temperature of 24.4 C (75.9 F) on 18 November 2016.
About the Station
Location: Kentucky, United States, 37.35 latitude, -84.34 longitude.
Elevation: 354 m (1,160 ft).
Period of record: 1956 to 2016, 61 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 Mt Vernon. 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 Mt Vernon, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-8.3 C (17.1 F)
n/a
n/a
May
32.8 C (91.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
2.2 C (36.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
7.2 C (45.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
3.3 C (37.9 F)
n/a
n/a
Sep
36.1 C (97.0 F)
0.6 C (33.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-14.4 C (6.1 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-26.7 C (-16.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mt Vernon still stand. 1963 holds the most, with 49.
Standing records at Mt Vernon by the year they were set
Year set
Standing records
1956
35
1957
23
1958
17
1959
34
1960
18
1961
9
1962
16
1963
49
1964
31
1965
26
1966
21
1967
37
1968
16
1969
15
1970
37
1971
23
1972
15
1973
15
1974
22
1975
26
1976
29
1977
27
1978
17
1979
18
1980
44
1981
21
1982
29
1983
34
1984
34
1985
26
1986
30
1987
22
1988
38
1989
30
1990
22
1991
32
1992
20
1993
18
1994
15
1995
11
1996
35
1997
22
1998
27
1999
18
2000
23
2001
18
2002
20
2003
17
2004
14
2005
10
2006
22
2007
38
2008
16
2009
20
2010
35
2011
19
2012
23
2013
20
2014
29
2015
22
2016
14
All-Time Record Progression
6 new records
6 all-time records were set at Mt Vernon between 19 January 1994 and 23 January 2016. Each dot is a new record.
When Mt Vernon set new all-time records
Date
Kind
Detail
1994-01-19
Record low minimum temperature
Record low minimum temperature -31.1 C (-24.0 F)
1996-01-07
Record daily snowfall
Record daily snowfall 26.7 cm (10.5 in)
1996-01-08
Record snow depth
Record snow depth 48.3 cm (19.0 in)
1998-06-27
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
2014-06-19
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
2016-01-23
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
Wettest Day of Each Month
Jan: 131.6 mm (5.2 in)
The wettest day on record for each calendar month at Mt Vernon. The most was 131.6 mm (5.2 in) on 10 January 1974.
Record daily precipitation for each month at Mt Vernon
Month
Record daily precipitation (mm)
Date
Jan
131.6 mm (5.2 in)
10 January 1974
Feb
89.4 mm (3.5 in)
6 February 2004
Mar
92.5 mm (3.6 in)
12 March 1975
Apr
76.2 mm (3.0 in)
28 April 1970
May
92.2 mm (3.6 in)
3 May 2010
Jun
84.3 mm (3.3 in)
23 June 1960
Jul
85.1 mm (3.4 in)
15 July 1996
Aug
77.2 mm (3.0 in)
4 August 1975
Sep
89.7 mm (3.5 in)
17 September 2004
Oct
86.4 mm (3.4 in)
17 October 1989
Nov
74.4 mm (2.9 in)
20 November 1988
Dec
118.4 mm (4.7 in)
8 December 1978
Period of Record Coverage
1956 to 2016
Complete yearUnder 90 percent of days
61 years of record at Mt Vernon, 1956 to 2016. 6 years have data for under 90 percent of days and are left out of rankings: 1956, 1960, 1961, 1962, 1999, 2016.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Mt Vernon, 1957 to 2015. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 2014, at 11.7 C (53.0 F), and the warmest was 1973, at 14.4 C (58.0 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Mt Vernon as warming stripes, 1957 to 2015
Year
Annual mean temperature
Difference from the station mean
1957
13.6 C
+0.59 C
1958
11.9 C
-1.10 C
1959
13.7 C
+0.72 C
1963
12.7 C
-0.32 C
1964
13.8 C
+0.82 C
1965
13.8 C
+0.81 C
1966
12.7 C
-0.24 C
1967
13.0 C
+0.03 C
1968
12.9 C
-0.08 C
1969
12.4 C
-0.54 C
1970
13.8 C
+0.78 C
1971
13.9 C
+0.89 C
1972
13.4 C
+0.37 C
1973
14.4 C
+1.45 C
1974
14.1 C
+1.07 C
1975
14.1 C
+1.16 C
1976
12.8 C
-0.21 C
1977
13.4 C
+0.39 C
1978
12.7 C
-0.25 C
1979
13.0 C
-0.02 C
1980
13.6 C
+0.63 C
1981
12.3 C
-0.68 C
1982
12.9 C
-0.13 C
1983
12.4 C
-0.61 C
1984
12.5 C
-0.44 C
1985
12.4 C
-0.62 C
1986
13.1 C
+0.14 C
1987
12.9 C
-0.08 C
1988
12.1 C
-0.88 C
1989
11.9 C
-1.08 C
1990
13.9 C
+0.87 C
1991
13.8 C
+0.84 C
1992
12.5 C
-0.52 C
1993
12.5 C
-0.52 C
1994
12.7 C
-0.33 C
1995
12.5 C
-0.48 C
1996
12.0 C
-0.96 C
1997
12.0 C
-0.96 C
1998
14.2 C
+1.18 C
2000
12.7 C
-0.25 C
2001
13.3 C
+0.29 C
2002
13.4 C
+0.38 C
2003
12.5 C
-0.50 C
2004
13.1 C
+0.07 C
2005
13.2 C
+0.25 C
2006
13.2 C
+0.24 C
2007
13.9 C
+0.90 C
2008
12.4 C
-0.58 C
2009
12.2 C
-0.75 C
2010
12.4 C
-0.56 C
2011
13.1 C
+0.11 C
2012
13.8 C
+0.80 C
2013
12.1 C
-0.85 C
2014
11.7 C
-1.33 C
2015
12.8 C
-0.17 C
The fitted trend in annual mean temperature here over 1957 to 2015 is -0.1 C (-0.2 to 0.0) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.4 to 0.0) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mt Vernon
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.0) per decade
-0.2 F (-0.4 to 0.0) per decade
1957 to 2015
55
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.4 to -0.2) per decade
-0.6 F (-0.8 to -0.3) per decade
1957 to 2015
55
Fall
Mean daily minimum
0.09 C (-0.03 to 0.21) per decade
0.2 F (-0.1 to 0.4) per decade
1957 to 2015
55
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
1956 to 2016
Yearly extremes at Mt Vernon: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1980
34.4 C (93.9 F)
61
Coldest night (TNn)
-31.1 C (-24.0 F)
1994
-19.4 C (-2.9 F)
61
Wettest day (Rx1day)
131.6 mm (5.2 in)
1974
63.5 mm (2.5 in)
61
Wettest five days (Rx5day)
206.8 mm (8.1 in)
1978
103.9 mm (4.1 in)
61
Longest dry spell (CDD)
35 days
1959
15 days
61
Hottest day (TXx)
The hottest day of the year at Mt Vernon, 1956 to 2016. The record is 38.9 C (102.0 F) in 1980, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Mt Vernon by year
Year
Hottest day (TXx)
1956
34.4 C (93.9 F)
1957
35.0 C (95.0 F)
1958
32.8 C (91.0 F)
1959
34.4 C (93.9 F)
1960
33.3 C (91.9 F)
1961
29.4 C (84.9 F)
1962
30.6 C (87.1 F)
1963
33.9 C (93.0 F)
1964
36.1 C (97.0 F)
1965
35.0 C (95.0 F)
1966
36.1 C (97.0 F)
1967
32.8 C (91.0 F)
1968
35.0 C (95.0 F)
1969
33.9 C (93.0 F)
1970
35.0 C (95.0 F)
1971
33.9 C (93.0 F)
1972
32.8 C (91.0 F)
1973
35.0 C (95.0 F)
1974
33.3 C (91.9 F)
1975
35.6 C (96.1 F)
1976
33.3 C (91.9 F)
1977
34.4 C (93.9 F)
1978
34.4 C (93.9 F)
1979
33.3 C (91.9 F)
1980
38.9 C (102.0 F)
1981
33.3 C (91.9 F)
1982
32.8 C (91.0 F)
1983
38.9 C (102.0 F)
1984
34.4 C (93.9 F)
1985
33.9 C (93.0 F)
1986
35.0 C (95.0 F)
1987
35.0 C (95.0 F)
1988
38.3 C (100.9 F)
1989
33.3 C (91.9 F)
1990
35.6 C (96.1 F)
1991
34.4 C (93.9 F)
1992
31.7 C (89.1 F)
1993
34.4 C (93.9 F)
1994
33.9 C (93.0 F)
1995
34.4 C (93.9 F)
1996
32.8 C (91.0 F)
1997
34.4 C (93.9 F)
1998
35.6 C (96.1 F)
1999
36.7 C (98.1 F)
2000
32.8 C (91.0 F)
2001
32.8 C (91.0 F)
2002
35.0 C (95.0 F)
2003
32.8 C (91.0 F)
2004
31.7 C (89.1 F)
2005
35.0 C (95.0 F)
2006
33.9 C (93.0 F)
2007
38.3 C (100.9 F)
2008
33.3 C (91.9 F)
2009
31.7 C (89.1 F)
2010
35.6 C (96.1 F)
2011
36.1 C (97.0 F)
2012
38.3 C (100.9 F)
2013
32.8 C (91.0 F)
2014
32.8 C (91.0 F)
2015
35.6 C (96.1 F)
2016
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Mt Vernon, 1956 to 2016. The record is -31.1 C (-24.0 F) in 1994, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Mt Vernon by year
Year
Coldest night (TNn)
1956
-8.9 C (16.0 F)
1957
-19.4 C (-2.9 F)
1958
-21.1 C (-6.0 F)
1959
-20.6 C (-5.1 F)
1960
-22.2 C (-8.0 F)
1961
-4.4 C (24.1 F)
1962
-24.4 C (-11.9 F)
1963
-27.8 C (-18.0 F)
1964
-16.7 C (1.9 F)
1965
-22.8 C (-9.0 F)
1966
-24.4 C (-11.9 F)
1967
-20.0 C (-4.0 F)
1968
-19.4 C (-2.9 F)
1969
-23.9 C (-11.0 F)
1970
-24.4 C (-11.9 F)
1971
-21.7 C (-7.1 F)
1972
-23.3 C (-9.9 F)
1973
-16.1 C (3.0 F)
1974
-13.9 C (7.0 F)
1975
-13.3 C (8.1 F)
1976
-19.4 C (-2.9 F)
1977
-25.6 C (-14.1 F)
1978
-21.7 C (-7.1 F)
1979
-20.6 C (-5.1 F)
1980
-21.1 C (-6.0 F)
1981
-22.2 C (-8.0 F)
1982
-26.7 C (-16.1 F)
1983
-23.9 C (-11.0 F)
1984
-27.8 C (-18.0 F)
1985
-27.8 C (-18.0 F)
1986
-20.6 C (-5.1 F)
1987
-20.6 C (-5.1 F)
1988
-17.8 C (0.0 F)
1989
-26.7 C (-16.1 F)
1990
-11.7 C (10.9 F)
1991
-15.6 C (3.9 F)
1992
-16.7 C (1.9 F)
1993
-15.6 C (3.9 F)
1994
-31.1 C (-24.0 F)
1995
-17.2 C (1.0 F)
1996
-23.9 C (-11.0 F)
1997
-17.2 C (1.0 F)
1998
-11.1 C (12.0 F)
1999
-16.7 C (1.9 F)
2000
-17.8 C (0.0 F)
2001
-17.8 C (0.0 F)
2002
-12.8 C (9.0 F)
2003
-20.0 C (-4.0 F)
2004
-18.9 C (-2.0 F)
2005
-15.6 C (3.9 F)
2006
-15.0 C (5.0 F)
2007
-14.4 C (6.1 F)
2008
-16.1 C (3.0 F)
2009
-18.9 C (-2.0 F)
2010
-17.2 C (1.0 F)
2011
-17.2 C (1.0 F)
2012
-10.6 C (12.9 F)
2013
-12.8 C (9.0 F)
2014
-21.1 C (-6.0 F)
2015
-27.2 C (-17.0 F)
2016
-15.6 C (3.9 F)
Wettest day (Rx1day)
The wettest day of the year at Mt Vernon, 1956 to 2016. The record is 131.6 mm (5.2 in) in 1974, marked on the chart; the median year is 63.5 mm (2.5 in).
Wettest day (Rx1day) at Mt Vernon by year
Year
Wettest day (Rx1day)
1956
68.8 mm (2.7 in)
1957
61.5 mm (2.4 in)
1958
61.2 mm (2.4 in)
1959
36.8 mm (1.4 in)
1960
84.3 mm (3.3 in)
1961
45.2 mm (1.8 in)
1962
43.2 mm (1.7 in)
1963
51.6 mm (2.0 in)
1964
67.3 mm (2.6 in)
1965
37.1 mm (1.5 in)
1966
52.6 mm (2.1 in)
1967
73.4 mm (2.9 in)
1968
57.4 mm (2.3 in)
1969
63.5 mm (2.5 in)
1970
76.2 mm (3.0 in)
1971
70.6 mm (2.8 in)
1972
76.2 mm (3.0 in)
1973
63.8 mm (2.5 in)
1974
131.6 mm (5.2 in)
1975
92.5 mm (3.6 in)
1976
61.0 mm (2.4 in)
1977
74.4 mm (2.9 in)
1978
118.4 mm (4.7 in)
1979
70.9 mm (2.8 in)
1980
52.1 mm (2.1 in)
1981
77.5 mm (3.1 in)
1982
81.0 mm (3.2 in)
1983
57.9 mm (2.3 in)
1984
70.6 mm (2.8 in)
1985
55.6 mm (2.2 in)
1986
63.0 mm (2.5 in)
1987
52.3 mm (2.1 in)
1988
74.4 mm (2.9 in)
1989
86.4 mm (3.4 in)
1990
65.3 mm (2.6 in)
1991
79.0 mm (3.1 in)
1992
69.1 mm (2.7 in)
1993
61.0 mm (2.4 in)
1994
58.4 mm (2.3 in)
1995
70.9 mm (2.8 in)
1996
85.1 mm (3.4 in)
1997
56.6 mm (2.2 in)
1998
79.5 mm (3.1 in)
1999
53.3 mm (2.1 in)
2000
54.6 mm (2.1 in)
2001
70.9 mm (2.8 in)
2002
49.3 mm (1.9 in)
2003
64.5 mm (2.5 in)
2004
89.7 mm (3.5 in)
2005
59.7 mm (2.4 in)
2006
70.1 mm (2.8 in)
2007
56.6 mm (2.2 in)
2008
59.4 mm (2.3 in)
2009
72.1 mm (2.8 in)
2010
92.2 mm (3.6 in)
2011
45.0 mm (1.8 in)
2012
51.3 mm (2.0 in)
2013
51.8 mm (2.0 in)
2014
61.7 mm (2.4 in)
2015
57.7 mm (2.3 in)
2016
53.8 mm (2.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mt Vernon, 1956 to 2016. The record is 206.8 mm (8.1 in) in 1978, marked on the chart; the median year is 103.9 mm (4.1 in).
Wettest five days (Rx5day) at Mt Vernon by year
Year
Wettest five days (Rx5day)
1956
122.2 mm (4.8 in)
1957
164.9 mm (6.5 in)
1958
78.0 mm (3.1 in)
1959
73.2 mm (2.9 in)
1960
132.3 mm (5.2 in)
1961
71.9 mm (2.8 in)
1962
63.0 mm (2.5 in)
1963
82.6 mm (3.3 in)
1964
118.1 mm (4.6 in)
1965
103.9 mm (4.1 in)
1966
97.2 mm (3.8 in)
1967
107.2 mm (4.2 in)
1968
97.4 mm (3.8 in)
1969
113.6 mm (4.5 in)
1970
134.6 mm (5.3 in)
1971
100.9 mm (4.0 in)
1972
128.9 mm (5.1 in)
1973
109.5 mm (4.3 in)
1974
192.1 mm (7.6 in)
1975
170.2 mm (6.7 in)
1976
103.9 mm (4.1 in)
1977
128.8 mm (5.1 in)
1978
206.8 mm (8.1 in)
1979
103.8 mm (4.1 in)
1980
79.0 mm (3.1 in)
1981
102.4 mm (4.0 in)
1982
100.8 mm (4.0 in)
1983
133.4 mm (5.3 in)
1984
164.1 mm (6.5 in)
1985
83.6 mm (3.3 in)
1986
134.6 mm (5.3 in)
1987
95.5 mm (3.8 in)
1988
102.4 mm (4.0 in)
1989
123.4 mm (4.9 in)
1990
127.2 mm (5.0 in)
1991
155.5 mm (6.1 in)
1992
79.7 mm (3.1 in)
1993
92.0 mm (3.6 in)
1994
118.1 mm (4.6 in)
1995
103.9 mm (4.1 in)
1996
132.8 mm (5.2 in)
1997
144.3 mm (5.7 in)
1998
109.7 mm (4.3 in)
1999
74.7 mm (2.9 in)
2000
95.0 mm (3.7 in)
2001
123.3 mm (4.9 in)
2002
100.3 mm (3.9 in)
2003
107.1 mm (4.2 in)
2004
134.7 mm (5.3 in)
2005
94.5 mm (3.7 in)
2006
103.7 mm (4.1 in)
2007
87.0 mm (3.4 in)
2008
75.9 mm (3.0 in)
2009
95.0 mm (3.7 in)
2010
128.8 mm (5.1 in)
2011
90.4 mm (3.6 in)
2012
76.9 mm (3.0 in)
2013
101.4 mm (4.0 in)
2014
106.1 mm (4.2 in)
2015
121.2 mm (4.8 in)
2016
95.5 mm (3.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mt Vernon, 1956 to 2016. The record is 35 days in 1959, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Mt Vernon by year
Year
Longest dry spell (CDD)
1956
15 days
1957
17 days
1958
18 days
1959
35 days
1960
11 days
1961
7 days
1962
12 days
1963
31 days
1964
20 days
1965
16 days
1966
14 days
1967
14 days
1968
20 days
1969
12 days
1970
17 days
1971
20 days
1972
13 days
1973
17 days
1974
15 days
1975
15 days
1976
14 days
1977
15 days
1978
14 days
1979
12 days
1980
15 days
1981
15 days
1982
12 days
1983
15 days
1984
13 days
1985
12 days
1986
19 days
1987
14 days
1988
14 days
1989
11 days
1990
18 days
1991
22 days
1992
19 days
1993
19 days
1994
13 days
1995
12 days
1996
14 days
1997
13 days
1998
20 days
1999
19 days
2000
14 days
2001
16 days
2002
22 days
2003
17 days
2004
14 days
2005
25 days
2006
11 days
2007
17 days
2008
20 days
2009
16 days
2010
19 days
2011
15 days
2012
23 days
2013
13 days
2014
13 days
2015
20 days
2016
21 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Mt Vernon falls on 24 April and the median first autumn frost on 17 October, which leaves a median of 176 days between them.
Fitted over all years, the growing season changes by +2.7 days per decade at this station.
Frost dates and growing season at Mt Vernon
Measure
Median, all years
Earliest period
Recent period (1985 to 2015)
Recent against earliest
Fitted trend
Last spring frost
24 April
n/a
21 April
n/a
-1.0 days per decade
First autumn frost
17 October
n/a
19 October
n/a
+1.7 days per decade
Growing days
176 days
n/a
177 days
n/a
+2.7 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
56 years, 1957 to 2015
A day with at least 64.1 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 120.5 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Mt Vernon: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
64.1 mm (2.5 in)
5 years
78.5 mm (3.1 in)
10 years
88.4 mm (3.5 in)
25 years
101.1 mm (4.0 in)
50 years
110.8 mm (4.4 in)
100 years
120.5 mm (4.7 in)
Longer than the 56 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, 56 years of values from 1957 to 2015.
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: 131.6 mm (5.2 in) in 1974; 118.4 mm (4.7 in) in 1978; 92.5 mm (3.6 in) in 1975.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Mt Vernon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mt Vernon 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.