Record envelope, standing records and threshold days for Helen (USC00094230), Georgia, United States, with 67 years of record.
Key Facts for Helen
Helen (USC00094230) is a weather station in Georgia, United States at 34.70 latitude and -83.73 longitude, 455 m (1,493 ft) above sea level.
The station reports from 1956 to 2022, 67 years of record.
1,464 records set at Helen still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Helen set a daily record precipitation of 41.1 mm (1.6 in) on 29 July 2022.
About the Station
Location: Georgia, United States, 34.70 latitude, -83.73 longitude.
Elevation: 455 m (1,493 ft).
Period of record: 1956 to 2022, 67 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 Helen. 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 Helen, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.9 C (84.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-18.3 C (-0.9 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-6.1 C (21.0 F)
n/a
n/a
May
35.6 C (96.1 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
38.9 C (102.0 F)
2.2 C (36.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
6.7 C (44.1 F)
n/a
n/a
Aug
37.2 C (99.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-12.2 C (10.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-21.1 C (-6.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Helen still stand. 1962 holds the most, with 58.
Standing records at Helen by the year they were set
Year set
Standing records
1956
18
1957
45
1958
19
1959
16
1960
38
1961
35
1962
58
1963
42
1964
36
1965
20
1966
24
1967
44
1968
23
1969
26
1970
26
1971
19
1972
15
1973
13
1974
31
1975
13
1976
29
1977
29
1978
9
1984
30
1985
47
1986
39
1987
17
1988
21
1989
35
1990
22
1991
32
1992
11
1993
15
1994
14
1995
16
1996
32
1997
24
1998
37
1999
21
2000
25
2001
13
2002
26
2003
14
2004
11
2005
12
2006
15
2007
21
2008
19
2009
18
2010
30
2011
17
2012
23
2013
23
2014
20
2015
13
2016
9
2017
28
2018
26
2019
20
2020
21
2021
10
2022
9
All-Time Record Progression
3 new records
3 all-time records were set at Helen between 14 August 1995 and 20 February 2015. Each dot is a new record.
When Helen set new all-time records
Date
Kind
Detail
1995-08-14
Record high minimum temperature
Record high minimum temperature 29.4 C (84.9 F)
2012-06-30
Record high maximum temperature
Record high maximum temperature 38.9 C (102.0 F)
2015-02-20
Record low maximum temperature
Record low maximum temperature -8.9 C (16.0 F)
Wettest Day of Each Month
Aug: 206.2 mm (8.1 in)
The wettest day on record for each calendar month at Helen. The most was 206.2 mm (8.1 in) on 23 August 1967.
Record daily precipitation for each month at Helen
Month
Record daily precipitation (mm)
Date
Jan
91.4 mm (3.6 in)
27 January 1996
Feb
114.3 mm (4.5 in)
13 February 1966
Mar
196.1 mm (7.7 in)
6 March 1996
Apr
113.0 mm (4.4 in)
5 April 1957
May
147.6 mm (5.8 in)
30 May 2018
Jun
176.8 mm (7.0 in)
1 June 2018
Jul
103.9 mm (4.1 in)
31 July 1968
Aug
206.2 mm (8.1 in)
23 August 1967
Sep
204.5 mm (8.1 in)
17 September 2004
Oct
152.4 mm (6.0 in)
26 October 1997
Nov
103.6 mm (4.1 in)
1 November 1969
Dec
140.0 mm (5.5 in)
12 December 1961
Period of Record Coverage
1956 to 2022
Complete yearUnder 90 percent of days
62 years of record at Helen, 1956 to 2022. 6 years have data for under 90 percent of days and are left out of rankings: 1956, 1959, 1978, 1984, 1999, 2022.
Cooler than the station meanWarmer than the station mean
One stripe for each of 53 complete years at Helen, 1957 to 2021. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1968, at 13.2 C (55.7 F), and the warmest was 1998, at 16.3 C (61.3 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Helen as warming stripes, 1957 to 2021
Year
Annual mean temperature
Difference from the station mean
1957
15.1 C
+0.69 C
1958
13.4 C
-0.97 C
1960
13.6 C
-0.74 C
1961
13.8 C
-0.59 C
1962
14.2 C
-0.20 C
1963
13.4 C
-1.00 C
1964
14.0 C
-0.42 C
1965
14.3 C
-0.07 C
1966
13.5 C
-0.84 C
1967
13.6 C
-0.81 C
1968
13.2 C
-1.22 C
1969
13.4 C
-0.96 C
1970
14.1 C
-0.27 C
1971
14.3 C
-0.11 C
1972
14.2 C
-0.23 C
1973
14.4 C
+0.02 C
1974
14.7 C
+0.27 C
1975
14.7 C
+0.31 C
1976
13.5 C
-0.90 C
1977
14.2 C
-0.16 C
1985
15.1 C
+0.73 C
1986
15.7 C
+1.30 C
1987
14.8 C
+0.39 C
1988
14.1 C
-0.25 C
1989
14.7 C
+0.34 C
1990
16.0 C
+1.64 C
1991
15.6 C
+1.17 C
1992
14.6 C
+0.24 C
1993
14.6 C
+0.23 C
1994
14.6 C
+0.21 C
1995
14.6 C
+0.18 C
1996
14.6 C
+0.20 C
1997
14.5 C
+0.08 C
1998
16.3 C
+1.92 C
2002
14.9 C
+0.54 C
2003
14.3 C
-0.05 C
2004
14.7 C
+0.29 C
2005
14.4 C
+0.01 C
2006
14.3 C
-0.11 C
2007
14.4 C
0.00 C
2008
13.4 C
-0.98 C
2009
13.3 C
-1.05 C
2010
14.0 C
-0.43 C
2011
14.7 C
+0.27 C
2012
15.0 C
+0.58 C
2013
13.6 C
-0.74 C
2014
13.6 C
-0.77 C
2015
14.7 C
+0.35 C
2016
15.1 C
+0.67 C
2018
14.5 C
+0.11 C
2019
15.0 C
+0.66 C
2020
14.8 C
+0.38 C
2021
14.5 C
+0.11 C
The annual mean temperature here has risen by 0.11 C (0.01 to 0.20) per decade over 1957 to 2021. In Fahrenheit: 0.19 F (0.02 to 0.36) per decade. The slope is a straight line fitted to 53 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Helen
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.11 C (0.01 to 0.20) per decade
0.19 F (0.02 to 0.36) per decade
1957 to 2021
53
Rise
Mean daily maximum
0.0 C (-0.1 to 0.1) per decade
0.0 F (-0.2 to 0.2) per decade
1957 to 2021
53
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1957 to 2021
53
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
1956 to 2022
Yearly extremes at Helen: 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)
2012
35.0 C (95.0 F)
62
Coldest night (TNn)
-24.4 C (-11.9 F)
1985
-12.2 C (10.0 F)
62
Wettest day (Rx1day)
206.2 mm (8.1 in)
1967
91.7 mm (3.6 in)
62
Wettest five days (Rx5day)
514.1 mm (20.2 in)
2018
155.0 mm (6.1 in)
62
Longest dry spell (CDD)
52 days
2016
18 days
62
Hottest day (TXx)
The hottest day of the year at Helen, 1956 to 2022. The record is 38.9 C (102.0 F) in 2012, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Helen by year
Year
Hottest day (TXx)
1956
35.0 C (95.0 F)
1957
36.7 C (98.1 F)
1958
36.7 C (98.1 F)
1959
35.6 C (96.1 F)
1960
34.4 C (93.9 F)
1961
34.4 C (93.9 F)
1962
36.1 C (97.0 F)
1963
35.0 C (95.0 F)
1964
37.2 C (99.0 F)
1965
33.3 C (91.9 F)
1966
34.4 C (93.9 F)
1967
32.2 C (90.0 F)
1968
35.0 C (95.0 F)
1969
34.4 C (93.9 F)
1970
35.6 C (96.1 F)
1971
33.3 C (91.9 F)
1972
32.2 C (90.0 F)
1973
31.7 C (89.1 F)
1974
31.7 C (89.1 F)
1975
33.9 C (93.0 F)
1976
34.4 C (93.9 F)
1977
36.7 C (98.1 F)
1978
25.0 C (77.0 F)
1984
35.0 C (95.0 F)
1985
35.6 C (96.1 F)
1986
37.8 C (100.0 F)
1987
35.0 C (95.0 F)
1988
36.7 C (98.1 F)
1989
33.3 C (91.9 F)
1990
35.6 C (96.1 F)
1991
33.9 C (93.0 F)
1992
33.3 C (91.9 F)
1993
36.1 C (97.0 F)
1994
32.8 C (91.0 F)
1995
36.1 C (97.0 F)
1996
34.4 C (93.9 F)
1997
35.0 C (95.0 F)
1998
37.2 C (99.0 F)
1999
36.7 C (98.1 F)
2000
36.7 C (98.1 F)
2001
35.0 C (95.0 F)
2002
35.6 C (96.1 F)
2003
32.8 C (91.0 F)
2004
33.9 C (93.0 F)
2005
35.0 C (95.0 F)
2006
35.0 C (95.0 F)
2007
37.2 C (99.0 F)
2008
33.3 C (91.9 F)
2009
33.9 C (93.0 F)
2010
35.6 C (96.1 F)
2011
36.1 C (97.0 F)
2012
38.9 C (102.0 F)
2013
32.8 C (91.0 F)
2014
33.3 C (91.9 F)
2015
33.3 C (91.9 F)
2016
34.4 C (93.9 F)
2017
33.3 C (91.9 F)
2018
32.8 C (91.0 F)
2019
36.1 C (97.0 F)
2020
37.8 C (100.0 F)
2021
33.3 C (91.9 F)
2022
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Helen, 1956 to 2022. The record is -24.4 C (-11.9 F) in 1985, marked on the chart; the median year is -12.2 C (10.0 F).
Coldest night (TNn) at Helen by year
Year
Coldest night (TNn)
1956
-8.9 C (16.0 F)
1957
-15.6 C (3.9 F)
1958
-18.3 C (-0.9 F)
1959
-11.1 C (12.0 F)
1960
-13.9 C (7.0 F)
1961
-13.9 C (7.0 F)
1962
-21.1 C (-6.0 F)
1963
-19.4 C (-2.9 F)
1964
-11.7 C (10.9 F)
1965
-11.7 C (10.9 F)
1966
-21.7 C (-7.1 F)
1967
-16.1 C (3.0 F)
1968
-12.2 C (10.0 F)
1969
-15.0 C (5.0 F)
1970
-19.4 C (-2.9 F)
1971
-12.8 C (9.0 F)
1972
-15.6 C (3.9 F)
1973
-11.7 C (10.9 F)
1974
-8.9 C (16.0 F)
1975
-10.6 C (12.9 F)
1976
-13.9 C (7.0 F)
1977
-17.2 C (1.0 F)
1978
-13.3 C (8.1 F)
1984
-10.6 C (12.9 F)
1985
-24.4 C (-11.9 F)
1986
-16.7 C (1.9 F)
1987
-10.0 C (14.0 F)
1988
-12.8 C (9.0 F)
1989
-15.6 C (3.9 F)
1990
-8.9 C (16.0 F)
1991
-17.8 C (0.0 F)
1992
-11.7 C (10.9 F)
1993
-14.4 C (6.1 F)
1994
-17.8 C (0.0 F)
1995
-13.3 C (8.1 F)
1996
-16.1 C (3.0 F)
1997
-13.3 C (8.1 F)
1998
-8.9 C (16.0 F)
1999
-10.6 C (12.9 F)
2000
-11.7 C (10.9 F)
2001
-11.1 C (12.0 F)
2002
-8.3 C (17.1 F)
2003
-14.4 C (6.1 F)
2004
-11.1 C (12.0 F)
2005
-11.1 C (12.0 F)
2006
-8.9 C (16.0 F)
2007
-10.6 C (12.9 F)
2008
-12.2 C (10.0 F)
2009
-12.8 C (9.0 F)
2010
-11.1 C (12.0 F)
2011
-10.6 C (12.9 F)
2012
-10.0 C (14.0 F)
2013
-7.2 C (19.0 F)
2014
-16.7 C (1.9 F)
2015
-15.0 C (5.0 F)
2016
-9.4 C (15.1 F)
2017
-11.7 C (10.9 F)
2018
-15.6 C (3.9 F)
2019
-7.8 C (18.0 F)
2020
-7.8 C (18.0 F)
2021
-5.6 C (21.9 F)
2022
-8.3 C (17.1 F)
Wettest day (Rx1day)
The wettest day of the year at Helen, 1956 to 2022. The record is 206.2 mm (8.1 in) in 1967, marked on the chart; the median year is 91.7 mm (3.6 in).
Wettest day (Rx1day) at Helen by year
Year
Wettest day (Rx1day)
1956
114.3 mm (4.5 in)
1957
113.0 mm (4.4 in)
1958
63.5 mm (2.5 in)
1959
127.0 mm (5.0 in)
1960
89.2 mm (3.5 in)
1961
140.0 mm (5.5 in)
1962
68.8 mm (2.7 in)
1963
123.7 mm (4.9 in)
1964
146.1 mm (5.8 in)
1965
102.1 mm (4.0 in)
1966
114.3 mm (4.5 in)
1967
206.2 mm (8.1 in)
1968
116.8 mm (4.6 in)
1969
103.6 mm (4.1 in)
1970
89.2 mm (3.5 in)
1971
68.6 mm (2.7 in)
1972
80.0 mm (3.1 in)
1973
114.3 mm (4.5 in)
1974
101.6 mm (4.0 in)
1975
59.7 mm (2.4 in)
1976
91.9 mm (3.6 in)
1977
95.3 mm (3.8 in)
1978
75.7 mm (3.0 in)
1984
71.1 mm (2.8 in)
1985
53.3 mm (2.1 in)
1986
69.6 mm (2.7 in)
1987
53.3 mm (2.1 in)
1988
53.3 mm (2.1 in)
1989
71.1 mm (2.8 in)
1990
101.6 mm (4.0 in)
1991
88.9 mm (3.5 in)
1992
77.5 mm (3.1 in)
1993
63.5 mm (2.5 in)
1994
99.1 mm (3.9 in)
1995
114.0 mm (4.5 in)
1996
196.1 mm (7.7 in)
1997
152.4 mm (6.0 in)
1998
116.8 mm (4.6 in)
1999
71.1 mm (2.8 in)
2000
97.0 mm (3.8 in)
2001
61.0 mm (2.4 in)
2002
51.6 mm (2.0 in)
2003
59.7 mm (2.4 in)
2004
204.5 mm (8.1 in)
2005
119.4 mm (4.7 in)
2006
66.5 mm (2.6 in)
2007
59.7 mm (2.4 in)
2008
129.3 mm (5.1 in)
2009
120.7 mm (4.8 in)
2010
88.1 mm (3.5 in)
2011
99.6 mm (3.9 in)
2012
98.0 mm (3.9 in)
2013
91.4 mm (3.6 in)
2014
71.1 mm (2.8 in)
2015
85.3 mm (3.4 in)
2016
66.5 mm (2.6 in)
2017
76.7 mm (3.0 in)
2018
176.8 mm (7.0 in)
2019
61.5 mm (2.4 in)
2020
141.0 mm (5.6 in)
2021
148.8 mm (5.9 in)
2022
76.2 mm (3.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Helen, 1956 to 2022. The record is 514.1 mm (20.2 in) in 2018, marked on the chart; the median year is 155.0 mm (6.1 in).
Wettest five days (Rx5day) at Helen by year
Year
Wettest five days (Rx5day)
1956
140.7 mm (5.5 in)
1957
163.9 mm (6.5 in)
1958
165.0 mm (6.5 in)
1959
239.2 mm (9.4 in)
1960
132.3 mm (5.2 in)
1961
276.1 mm (10.9 in)
1962
97.5 mm (3.8 in)
1963
211.4 mm (8.3 in)
1964
214.5 mm (8.4 in)
1965
129.1 mm (5.1 in)
1966
220.0 mm (8.7 in)
1967
449.6 mm (17.7 in)
1968
146.7 mm (5.8 in)
1969
137.9 mm (5.4 in)
1970
173.7 mm (6.8 in)
1971
128.2 mm (5.0 in)
1972
128.5 mm (5.1 in)
1973
155.7 mm (6.1 in)
1974
110.3 mm (4.3 in)
1975
118.4 mm (4.7 in)
1976
165.6 mm (6.5 in)
1977
198.5 mm (7.8 in)
1978
108.4 mm (4.3 in)
1984
152.8 mm (6.0 in)
1985
107.2 mm (4.2 in)
1986
129.4 mm (5.1 in)
1987
139.7 mm (5.5 in)
1988
124.0 mm (4.9 in)
1989
170.1 mm (6.7 in)
1990
174.0 mm (6.9 in)
1991
107.6 mm (4.2 in)
1992
154.2 mm (6.1 in)
1993
118.8 mm (4.7 in)
1994
215.2 mm (8.5 in)
1995
178.2 mm (7.0 in)
1996
213.4 mm (8.4 in)
1997
205.7 mm (8.1 in)
1998
138.5 mm (5.5 in)
1999
174.0 mm (6.9 in)
2000
139.7 mm (5.5 in)
2001
125.8 mm (5.0 in)
2002
101.9 mm (4.0 in)
2003
127.0 mm (5.0 in)
2004
217.7 mm (8.6 in)
2005
153.2 mm (6.0 in)
2006
140.6 mm (5.5 in)
2007
89.7 mm (3.5 in)
2008
241.5 mm (9.5 in)
2009
237.0 mm (9.3 in)
2010
156.7 mm (6.2 in)
2011
173.2 mm (6.8 in)
2012
127.5 mm (5.0 in)
2013
200.8 mm (7.9 in)
2014
126.5 mm (5.0 in)
2015
182.9 mm (7.2 in)
2016
91.2 mm (3.6 in)
2017
108.2 mm (4.3 in)
2018
514.1 mm (20.2 in)
2019
180.8 mm (7.1 in)
2020
180.6 mm (7.1 in)
2021
201.7 mm (7.9 in)
2022
175.3 mm (6.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Helen, 1956 to 2022. The record is 52 days in 2016, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Helen by year
Year
Longest dry spell (CDD)
1956
20 days
1957
20 days
1958
21 days
1959
13 days
1960
16 days
1961
16 days
1962
13 days
1963
32 days
1964
12 days
1965
18 days
1966
16 days
1967
18 days
1968
20 days
1969
11 days
1970
23 days
1971
15 days
1972
10 days
1973
25 days
1974
21 days
1975
20 days
1976
22 days
1977
15 days
1978
10 days
1984
31 days
1985
18 days
1986
19 days
1987
25 days
1988
22 days
1989
18 days
1990
18 days
1991
16 days
1992
19 days
1993
23 days
1994
10 days
1995
21 days
1996
23 days
1997
20 days
1998
30 days
1999
21 days
2000
29 days
2001
29 days
2002
18 days
2003
11 days
2004
12 days
2005
26 days
2006
11 days
2007
21 days
2008
17 days
2009
13 days
2010
15 days
2011
16 days
2012
18 days
2013
29 days
2014
15 days
2015
13 days
2016
52 days
2017
24 days
2018
18 days
2019
12 days
2020
13 days
2021
15 days
2022
14 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
53 years with a frost
Across 53 years with a frost, the median last spring frost at Helen falls on 17 April and the median first autumn frost on 24 October, which leaves a median of 191 days between them.
Fitted over all years, the growing season changes by +6.3 days per decade at this station.
Frost dates and growing season at Helen
Measure
Median, all years
Earliest period
Recent period (1988 to 2021)
Recent against earliest
Fitted trend
Last spring frost
17 April
n/a
11 April
n/a
-3.5 days per decade
First autumn frost
24 October
n/a
28 October
n/a
+2.8 days per decade
Growing days
191 days
n/a
199 days
n/a
+6.3 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, 1957 to 2021
A day with at least 90.8 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 235.3 mm (9.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Helen: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
90.8 mm (3.6 in)
5 years
124.4 mm (4.9 in)
10 years
148.6 mm (5.9 in)
25 years
181.4 mm (7.1 in)
50 years
207.6 mm (8.2 in)
100 years
235.3 mm (9.3 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 1957 to 2021.
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: 206.2 mm (8.1 in) in 1967; 204.5 mm (8.1 in) in 2004; 196.1 mm (7.7 in) in 1996.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2006 to 2021 against 1961 to 1990
Over 2006 to 2021, Helen had a mean temperature of 14.3 C (57.8 F) and 1,850.3 mm (72.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Monteagle (United States, 201 km away), Scottsboro (United States, 213 km away) and Tryon (United States, 146 km away).
Climate twins of Helen: stations whose 1961 to 1990 climate is closest to its 2006 to 2021 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Helen standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Helen 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.