Record envelope, standing records and threshold days for Apex (USC00310212), North Carolina, United States, with 33 years of record.
Key Facts for Apex
Apex (USC00310212) is a weather station in North Carolina, United States at 35.74 latitude and -78.84 longitude, 137 m (450 ft) above sea level.
The station reports from 1993 to 2025, 33 years of record.
1,464 records set at Apex still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Apex set a daily record low maximum temperature of 26.1 C (79.0 F) on 24 August 2025.
About the Station
Location: North Carolina, United States, 35.74 latitude, -78.84 longitude.
Elevation: 137 m (450 ft).
Period of record: 1993 to 2025, 33 years.
Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
15 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 Apex. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Apex, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.7 C (80.1 F)
-16.7 C (1.9 F)
20.0 C (68.0 F)
-8.9 C (16.0 F)
Feb
27.8 C (82.0 F)
-16.1 C (3.0 F)
25.6 C (78.1 F)
-6.7 C (19.9 F)
Mar
31.7 C (89.1 F)
-9.4 C (15.1 F)
27.2 C (81.0 F)
-3.3 C (26.1 F)
Apr
33.3 C (91.9 F)
-3.3 C (26.1 F)
30.6 C (87.1 F)
3.3 C (37.9 F)
May
35.6 C (96.1 F)
3.3 C (37.9 F)
31.1 C (88.0 F)
9.4 C (48.9 F)
Jun
39.4 C (102.9 F)
7.8 C (46.0 F)
36.7 C (98.1 F)
10.6 C (51.1 F)
Jul
39.4 C (102.9 F)
13.9 C (57.0 F)
36.7 C (98.1 F)
18.9 C (66.0 F)
Aug
40.0 C (104.0 F)
12.2 C (54.0 F)
32.8 C (91.0 F)
14.4 C (57.9 F)
Sep
37.8 C (100.0 F)
6.1 C (43.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-6.7 C (19.9 F)
n/a
n/a
Dec
26.7 C (80.1 F)
-12.8 C (9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Apex still stand. 1997 holds the most, with 75.
Standing records at Apex by the year they were set
Year set
Standing records
1993
42
1994
28
1995
42
1996
63
1997
75
1998
47
1999
57
2000
49
2001
46
2002
62
2003
48
2004
46
2005
34
2006
47
2007
45
2008
27
2009
39
2010
53
2011
39
2012
44
2013
42
2014
54
2015
60
2016
39
2017
49
2018
52
2019
44
2020
42
2021
30
2022
30
2023
31
2024
36
2025
22
Wettest Day of Each Month
Oct: 154.4 mm (6.1 in)
The wettest day on record for each calendar month at Apex. The most was 154.4 mm (6.1 in) on 9 October 2016.
Record daily precipitation for each month at Apex
Month
Record daily precipitation (mm)
Date
Jan
79.2 mm (3.1 in)
3 January 2022
Feb
88.4 mm (3.5 in)
7 February 2020
Mar
70.6 mm (2.8 in)
19 March 1998
Apr
141.5 mm (5.6 in)
25 April 2017
May
101.6 mm (4.0 in)
16 May 2014
Jun
136.4 mm (5.4 in)
15 June 2006
Jul
117.9 mm (4.6 in)
17 July 2016
Aug
147.3 mm (5.8 in)
7 August 2025
Sep
153.9 mm (6.1 in)
6 September 1996
Oct
154.4 mm (6.1 in)
9 October 2016
Nov
105.7 mm (4.2 in)
13 November 2018
Dec
95.8 mm (3.8 in)
11 December 2023
Period of Record Coverage
1993 to 2025
Complete yearUnder 90 percent of days
33 years of record at Apex, 1993 to 2025. 4 years have data for under 90 percent of days and are left out of rankings: 1993, 2000, 2006, 2025.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Apex, 1994 to 2023. Blue stripes are years cooler than the station's own mean of 15.7 C (60.3 F); red stripes are warmer. The coolest year was 1996, at 14.4 C (57.9 F), and the warmest was 2019, at 16.7 C (62.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Apex as warming stripes, 1994 to 2023
Year
Annual mean temperature
Difference from the station mean
1994
15.3 C
-0.47 C
1995
14.9 C
-0.85 C
1996
14.4 C
-1.32 C
1997
14.8 C
-0.94 C
1998
16.2 C
+0.52 C
2001
15.7 C
-0.05 C
2003
14.9 C
-0.78 C
2004
15.4 C
-0.30 C
2011
16.1 C
+0.37 C
2012
16.2 C
+0.50 C
2013
14.9 C
-0.85 C
2014
14.8 C
-0.95 C
2015
15.9 C
+0.21 C
2016
16.3 C
+0.60 C
2017
16.6 C
+0.84 C
2018
16.1 C
+0.38 C
2019
16.7 C
+0.93 C
2020
16.3 C
+0.62 C
2021
16.1 C
+0.39 C
2022
15.9 C
+0.20 C
2023
16.6 C
+0.90 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1993 to 2025
Yearly extremes at Apex: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1999
36.7 C (98.1 F)
33
Coldest night (TNn)
-16.7 C (1.9 F)
1994
-9.4 C (15.1 F)
33
Wettest day (Rx1day)
154.4 mm (6.1 in)
2016
81.0 mm (3.2 in)
33
Wettest five days (Rx5day)
225.3 mm (8.9 in)
1999
121.1 mm (4.8 in)
33
Longest dry spell (CDD)
45 days
2007
16 days
33
Hottest day (TXx)
The hottest day of the year at Apex, 1993 to 2025. The record is 40.0 C (104.0 F) in 1999, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Apex by year
Year
Hottest day (TXx)
1993
39.4 C (102.9 F)
1994
34.4 C (93.9 F)
1995
37.2 C (99.0 F)
1996
35.6 C (96.1 F)
1997
36.1 C (97.0 F)
1998
36.1 C (97.0 F)
1999
40.0 C (104.0 F)
2000
37.8 C (100.0 F)
2001
35.6 C (96.1 F)
2002
38.3 C (100.9 F)
2003
34.4 C (93.9 F)
2004
35.6 C (96.1 F)
2005
37.8 C (100.0 F)
2006
36.7 C (98.1 F)
2007
40.0 C (104.0 F)
2008
35.6 C (96.1 F)
2009
35.6 C (96.1 F)
2010
37.8 C (100.0 F)
2011
38.9 C (102.0 F)
2012
39.4 C (102.9 F)
2013
34.4 C (93.9 F)
2014
36.1 C (97.0 F)
2015
37.2 C (99.0 F)
2016
35.6 C (96.1 F)
2017
37.2 C (99.0 F)
2018
35.6 C (96.1 F)
2019
36.7 C (98.1 F)
2020
35.0 C (95.0 F)
2021
35.0 C (95.0 F)
2022
37.2 C (99.0 F)
2023
35.6 C (96.1 F)
2024
37.8 C (100.0 F)
2025
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Apex, 1993 to 2025. The record is -16.7 C (1.9 F) in 1994, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Apex by year
Year
Coldest night (TNn)
1993
-8.9 C (16.0 F)
1994
-16.7 C (1.9 F)
1995
-10.6 C (12.9 F)
1996
-16.1 C (3.0 F)
1997
-10.6 C (12.9 F)
1998
-6.1 C (21.0 F)
1999
-9.4 C (15.1 F)
2000
-9.4 C (15.1 F)
2001
-8.3 C (17.1 F)
2002
-7.2 C (19.0 F)
2003
-12.2 C (10.0 F)
2004
-11.7 C (10.9 F)
2005
-11.1 C (12.0 F)
2006
-7.2 C (19.0 F)
2007
-9.4 C (15.1 F)
2008
-8.9 C (16.0 F)
2009
-12.2 C (10.0 F)
2010
-9.4 C (15.1 F)
2011
-8.3 C (17.1 F)
2012
-7.2 C (19.0 F)
2013
-7.2 C (19.0 F)
2014
-12.8 C (9.0 F)
2015
-13.9 C (7.0 F)
2016
-9.4 C (15.1 F)
2017
-12.2 C (10.0 F)
2018
-13.9 C (7.0 F)
2019
-8.3 C (17.1 F)
2020
-6.7 C (19.9 F)
2021
-5.6 C (21.9 F)
2022
-12.8 C (9.0 F)
2023
-5.6 C (21.9 F)
2024
-8.3 C (17.1 F)
2025
-8.9 C (16.0 F)
Wettest day (Rx1day)
The wettest day of the year at Apex, 1993 to 2025. The record is 154.4 mm (6.1 in) in 2016, marked on the chart; the median year is 81.0 mm (3.2 in).
Wettest day (Rx1day) at Apex by year
Year
Wettest day (Rx1day)
1993
75.9 mm (3.0 in)
1994
69.6 mm (2.7 in)
1995
129.0 mm (5.1 in)
1996
153.9 mm (6.1 in)
1997
51.1 mm (2.0 in)
1998
70.6 mm (2.8 in)
1999
142.2 mm (5.6 in)
2000
48.8 mm (1.9 in)
2001
80.0 mm (3.1 in)
2002
129.3 mm (5.1 in)
2003
63.0 mm (2.5 in)
2004
78.7 mm (3.1 in)
2005
53.3 mm (2.1 in)
2006
136.4 mm (5.4 in)
2007
74.4 mm (2.9 in)
2008
111.8 mm (4.4 in)
2009
56.6 mm (2.2 in)
2010
83.1 mm (3.3 in)
2011
61.5 mm (2.4 in)
2012
51.8 mm (2.0 in)
2013
81.0 mm (3.2 in)
2014
104.1 mm (4.1 in)
2015
62.0 mm (2.4 in)
2016
154.4 mm (6.1 in)
2017
141.5 mm (5.6 in)
2018
105.7 mm (4.2 in)
2019
66.0 mm (2.6 in)
2020
88.4 mm (3.5 in)
2021
75.2 mm (3.0 in)
2022
82.0 mm (3.2 in)
2023
95.8 mm (3.8 in)
2024
83.8 mm (3.3 in)
2025
147.3 mm (5.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Apex, 1993 to 2025. The record is 225.3 mm (8.9 in) in 1999, marked on the chart; the median year is 121.1 mm (4.8 in).
Wettest five days (Rx5day) at Apex by year
Year
Wettest five days (Rx5day)
1993
87.6 mm (3.4 in)
1994
114.3 mm (4.5 in)
1995
175.5 mm (6.9 in)
1996
184.4 mm (7.3 in)
1997
97.8 mm (3.9 in)
1998
111.2 mm (4.4 in)
1999
225.3 mm (8.9 in)
2000
82.5 mm (3.2 in)
2001
121.1 mm (4.8 in)
2002
155.4 mm (6.1 in)
2003
110.2 mm (4.3 in)
2004
144.0 mm (5.7 in)
2005
81.6 mm (3.2 in)
2006
189.5 mm (7.5 in)
2007
124.0 mm (4.9 in)
2008
131.7 mm (5.2 in)
2009
115.1 mm (4.5 in)
2010
151.0 mm (5.9 in)
2011
62.3 mm (2.5 in)
2012
75.2 mm (3.0 in)
2013
139.5 mm (5.5 in)
2014
136.1 mm (5.4 in)
2015
87.6 mm (3.4 in)
2016
178.7 mm (7.0 in)
2017
185.9 mm (7.3 in)
2018
179.4 mm (7.1 in)
2019
118.1 mm (4.6 in)
2020
105.4 mm (4.1 in)
2021
103.2 mm (4.1 in)
2022
101.8 mm (4.0 in)
2023
113.5 mm (4.5 in)
2024
168.4 mm (6.6 in)
2025
184.7 mm (7.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Apex, 1993 to 2025. The record is 45 days in 2007, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Apex by year
Year
Longest dry spell (CDD)
1993
16 days
1994
15 days
1995
27 days
1996
13 days
1997
16 days
1998
16 days
1999
18 days
2000
39 days
2001
39 days
2002
22 days
2003
15 days
2004
12 days
2005
18 days
2006
18 days
2007
45 days
2008
16 days
2009
10 days
2010
21 days
2011
19 days
2012
14 days
2013
18 days
2014
23 days
2015
21 days
2016
16 days
2017
15 days
2018
9 days
2019
25 days
2020
15 days
2021
14 days
2022
16 days
2023
20 days
2024
25 days
2025
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
21 years with a frost
Across 21 years with a frost, the median last spring frost at Apex falls on 29 March and the median first autumn frost on 10 November, which leaves a median of 225 days between them.
Frost dates and growing season at Apex
Measure
Median, all years
Earliest period
Recent period (1994 to 2023)
Recent against earliest
Fitted trend
Last spring frost
29 March
n/a
29 March
n/a
n/a
First autumn frost
10 November
n/a
10 November
n/a
n/a
Growing days
225 days
n/a
225 days
n/a
n/a
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
30 years, 1994 to 2024
A day with at least 84.7 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 204.6 mm (8.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Apex: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
84.7 mm (3.3 in)
5 years
114.3 mm (4.5 in)
10 years
134.8 mm (5.3 in)
25 years
162.0 mm (6.4 in)
50 years
183.0 mm (7.2 in)
Longer than the 30 years of record
100 years
204.6 mm (8.1 in)
Longer than the 30 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, 30 years of values from 1994 to 2024.
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: 154.4 mm (6.1 in) in 2016; 153.9 mm (6.1 in) in 1996; 142.2 mm (5.6 in) in 1999.
Download the Data
Data for Apex standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Apex 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.