Apex climate — normals and trends

Q: What is the climate of Apex?

Apex has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,129 mm of precipitation per year.

Q: What is the hottest day ever recorded in Apex?

The hottest day measured in Apex between 1940 and 2025 was 9 July 1977, reaching 41.5 °C.

Q: What is the coldest day in Apex?

The coldest day measured in Apex between 1940 and 2025 was 21 January 1985, at -19.9 °C.

Q: Does it snow in Apex?

Yes. Apex gets on average 14.1 cm of snow per year and has around 48 frost days.

Q: Has the climate of Apex warmed?

Yes: Apex warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Apex?

The wettest day measured in Apex between 1940 and 2025 was 9 November 1962, with 111 mm of rain in 24 hours.

Q: What was the windiest day in Apex?

The windiest day measured in Apex between 1940 and 2025 was 6 September 1996, with winds reaching 59.4 km/h.

Q: What is the warmest month in Apex?

The warmest month in Apex is July (26.0 °C on average); the coldest is January (5.1 °C).

Q: How much does it rain in Apex?

Apex receives on average 1,129 mm of precipitation per year, spread over about 123 rainy days.

Q: Is it sunny in Apex?

Apex gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Apex (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 1,129 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (26.0 °C on average) and the coldest is January (5.1 °C). Rainfall peaks in July.

Apex averages 48 frost days, 68 hot days (≥ 30 °C) and 123 rainy days per year.

Apex has warmed by +1.2 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.5 °C (on 9 July 1977) and the coldest -19.9 °C (on 21 January 1985).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

ApexNorth Carolina

coords: 35.73°, -78.85°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthOctober

Mean daily temperature

15.8°C

Average daily high

21.3°C

Average daily low

11.1°C

Annual rainfall

1,129mm

Sunshine / day

9.3h

Mean relative humidity

70%

Average peak wind

15.1km/h

Seasonal range

20.9°C

Frost days (< 0 °C)

48 d/yr

Hot days (≥ 30 °C)

68 d/yr

Rainy days (≥ 1 mm)

123 d/yr

Annual snowfall

14.1 cm

Average feels-like high

21.2 °C

Average feels-like low

9.8 °C

Average peak gust

34.7 km/h

Tropical nights (≥ 20 °C)

79 d/yr

Solar radiation

15.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.2 °C

since 1940

+0.2 °C per decade · r² = 0.29 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

41.5 °C

9 July 1977

Coldest day

-19.9 °C

21 January 1985

Wettest day

111 mm

9 November 1962

Windiest day

59.4 km/h

6 September 1996

Strongest gust

155.2 km/h

6 September 1996

Hottest feels-like

44.8 °C

29 June 2012

Coldest feels-like

-26.2 °C

21 January 1985

Snowiest day

26.6 cm

26 January 1966

Sunniest day

14.1 h

16 June 2021

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.9 °C25 June 2025	-10.1 °C23 January 2025	16.4 °C	1,085 mm	74	52
2024	36.8 °C26 June 2024	-8.0 °C7 December 2024	16.8 °C	1,232 mm	71	34
2023	36.7 °C15 August 2023	-5.2 °C29 November 2023	17.2 °C	1,081 mm	78	28
2022	38.1 °C17 June 2022	-11.6 °C24 December 2022	16.7 °C	1,129 mm	92	52
2021	35.1 °C28 August 2021	-5.5 °C30 January 2021	16.7 °C	1,073 mm	74	34
2020	37.3 °C19 July 2020	-6.0 °C26 December 2020	17.2 °C	1,616 mm	75	28
2019	36.5 °C3 October 2019	-6.7 °C21 January 2019	17.2 °C	1,081 mm	106	31
2018	36.5 °C19 June 2018	-14.0 °C7 January 2018	16.7 °C	1,557 mm	93	42
2017	36.2 °C23 July 2017	-9.7 °C8 January 2017	17.1 °C	1,111 mm	80	39
2016	36.0 °C12 June 2016	-7.8 °C14 February 2016	16.7 °C	1,304 mm	80	43
2015	38.7 °C16 June 2015	-13.3 °C20 February 2015	16.9 °C	1,258 mm	94	45
2014	36.5 °C2 September 2014	-12.4 °C30 January 2014	15.6 °C	1,048 mm	78	59
2013	36.7 °C10 August 2013	-7.1 °C2 February 2013	15.9 °C	1,149 mm	80	49
2012	41.5 °C29 June 2012	-7.0 °C4 January 2012	17.0 °C	964 mm	69	23
2011	39.6 °C23 July 2011	-8.0 °C23 January 2011	17.0 °C	832 mm	98	43
2010	38.2 °C12 August 2010	-10.4 °C1 February 2010	16.2 °C	994 mm	112	71
2009	36.6 °C10 August 2009	-13.3 °C17 January 2009	16.0 °C	1,171 mm	71	48
2008	37.9 °C9 June 2008	-8.5 °C4 January 2008	16.2 °C	1,130 mm	70	38
2007	39.1 °C8 August 2007	-7.9 °C6 February 2007	17.2 °C	705 mm	104	44
2006	37.4 °C4 August 2006	-8.4 °C9 December 2006	16.5 °C	1,125 mm	69	31
2005	38.4 °C27 July 2005	-9.8 °C19 January 2005	16.2 °C	1,053 mm	77	50
2004	36.1 °C14 July 2004	-9.9 °C11 January 2004	15.8 °C	1,136 mm	51	61
2003	34.0 °C9 July 2003	-9.3 °C24 January 2003	15.3 °C	1,399 mm	47	55
2002	37.2 °C23 August 2002	-7.0 °C5 January 2002	16.2 °C	1,182 mm	72	45
2001	34.5 °C9 August 2001	-7.7 °C3 January 2001	16.1 °C	838 mm	41	44
2000	33.5 °C16 August 2000	-13.0 °C28 January 2000	15.1 °C	1,179 mm	43	57
1999	38.0 °C1 August 1999	-9.1 °C6 January 1999	16.2 °C	1,219 mm	53	42
1998	37.2 °C27 June 1998	-6.5 °C13 March 1998	16.6 °C	1,238 mm	85	28
1997	36.3 °C4 July 1997	-9.2 °C19 January 1997	15.2 °C	1,024 mm	50	35
1996	35.9 °C23 June 1996	-18.5 °C5 February 1996	15.0 °C	1,403 mm	49	66
1995	35.3 °C23 July 1995	-8.8 °C7 February 1995	15.5 °C	1,244 mm	53	55
1994	34.8 °C16 June 1994	-14.2 °C19 January 1994	15.8 °C	1,238 mm	53	34
1993	37.4 °C9 July 1993	-6.2 °C15 March 1993	16.0 °C	1,167 mm	86	47
1992	39.4 °C11 July 1992	-7.6 °C25 December 1992	15.6 °C	1,275 mm	58	40
1991	37.6 °C23 July 1991	-8.5 °C16 February 1991	16.8 °C	1,155 mm	84	38
1990	37.8 °C5 July 1990	-6.6 °C26 February 1990	17.6 °C	1,004 mm	93	20
1989	36.7 °C2 June 1989	-10.3 °C23 December 1989	15.6 °C	1,381 mm	73	54
1988	40.6 °C18 August 1988	-10.4 °C12 January 1988	15.4 °C	1,032 mm	77	56
1987	37.8 °C22 July 1987	-8.5 °C24 January 1987	15.8 °C	1,105 mm	90	51
1986	38.5 °C19 July 1986	-11.0 °C28 January 1986	16.6 °C	940 mm	93	47
1985	36.2 °C10 June 1985	-19.9 °C21 January 1985	16.2 °C	1,212 mm	76	58
1984	34.8 °C11 July 1984	-11.8 °C22 January 1984	15.6 °C	1,311 mm	56	56
1983	39.6 °C22 August 1983	-14.5 °C25 December 1983	15.4 °C	1,380 mm	77	44
1982	34.8 °C25 August 1982	-14.1 °C11 January 1982	15.8 °C	1,161 mm	68	48
1981	37.7 °C22 June 1981	-13.7 °C31 January 1981	15.3 °C	917 mm	74	65
1980	37.1 °C17 July 1980	-10.8 °C26 December 1980	15.4 °C	885 mm	89	53
1979	34.8 °C10 August 1979	-15.6 °C10 February 1979	14.9 °C	1,261 mm	38	61
1978	35.9 °C10 July 1978	-10.7 °C11 January 1978	14.9 °C	1,204 mm	67	69
1977	41.5 °C9 July 1977	-14.8 °C17 January 1977	15.9 °C	1,028 mm	88	69
1976	36.5 °C30 July 1976	-13.2 °C19 January 1976	15.2 °C	1,026 mm	57	60
1975	35.3 °C16 August 1975	-8.9 °C19 December 1975	16.2 °C	1,172 mm	73	46
1974	35.6 °C23 June 1974	-7.8 °C27 February 1974	15.8 °C	1,232 mm	45	37
1973	34.9 °C29 August 1973	-14.5 °C12 February 1973	15.7 °C	1,100 mm	54	48
1972	35.6 °C24 July 1972	-13.6 °C16 January 1972	15.2 °C	1,305 mm	50	46
1971	34.7 °C6 June 1971	-10.6 °C2 February 1971	15.7 °C	1,327 mm	52	51
1970	36.4 °C18 June 1970	-13.1 °C9 January 1970	15.6 °C	955 mm	76	66
1969	36.1 °C6 July 1969	-11.7 °C6 January 1969	14.8 °C	998 mm	62	64
1968	36.6 °C1 July 1968	-9.0 °C12 January 1968	15.6 °C	920 mm	74	69
1967	35.4 °C28 May 1967	-10.9 °C25 February 1967	15.7 °C	891 mm	59	48
1966	36.4 °C14 July 1966	-13.3 °C31 January 1966	15.0 °C	1,043 mm	60	54
1965	33.4 °C26 May 1965	-11.8 °C1 February 1965	15.3 °C	917 mm	60	59
1964	35.6 °C10 June 1964	-10.3 °C15 January 1964	15.4 °C	1,372 mm	51	45
1963	35.5 °C10 June 1963	-10.9 °C24 January 1963	14.7 °C	1,006 mm	60	69
1962	35.6 °C16 July 1962	-13.2 °C13 December 1962	15.2 °C	1,090 mm	62	56
1961	34.9 °C3 June 1961	-8.6 °C22 January 1961	15.5 °C	1,246 mm	74	45
1960	34.9 °C24 June 1960	-8.0 °C13 December 1960	14.9 °C	1,028 mm	69	69
1959	36.9 °C29 June 1959	-10.4 °C18 January 1959	15.9 °C	1,375 mm	54	48
1958	35.4 °C13 June 1958	-16.0 °C16 December 1958	14.6 °C	1,231 mm	67	59
1957	36.4 °C3 August 1957	-10.4 °C18 January 1957	16.2 °C	1,123 mm	81	34
1956	36.0 °C6 August 1956	-5.7 °C28 January 1956	15.9 °C	1,122 mm	74	43
1955	35.7 °C28 July 1955	-10.4 °C21 January 1955	15.6 °C	1,027 mm	63	62
1954	38.4 °C27 June 1954	-8.7 °C7 December 1954	15.9 °C	980 mm	84	55
1953	37.0 °C31 July 1953	-8.6 °C19 December 1953	16.7 °C	954 mm	85	31
1952	39.1 °C29 July 1952	-8.1 °C31 January 1952	16.0 °C	1,034 mm	81	39
1951	37.3 °C2 June 1951	-10.0 °C4 February 1951	15.6 °C	1,092 mm	65	54
1950	36.0 °C27 June 1950	-8.4 °C19 December 1950	15.7 °C	885 mm	50	51
1949	36.5 °C29 July 1949	-4.9 °C17 December 1949	16.4 °C	1,192 mm	52	35
1948	37.4 °C29 August 1948	-12.0 °C27 December 1948	15.7 °C	1,320 mm	65	49
1947	34.5 °C17 August 1947	-8.0 °C9 February 1947	15.0 °C	997 mm	60	61
1946	33.3 °C8 July 1946	-6.1 °C2 January 1946	15.9 °C	1,171 mm	23	37
1945	35.4 °C30 June 1945	-6.1 °C1 February 1945	15.7 °C	1,363 mm	44	40
1944	37.1 °C18 June 1944	-7.4 °C10 January 1944	15.8 °C	1,154 mm	54	34
1943	35.9 °C5 June 1943	-6.2 °C15 February 1943	15.5 °C	1,008 mm	55	44
1942	36.2 °C20 July 1942	-7.6 °C11 January 1942	15.9 °C	1,109 mm	50	42
1941	34.7 °C29 May 1941	-4.3 °C1 March 1941	15.9 °C	1,025 mm	52	43
1940	36.1 °C27 July 1940	-12.6 °C28 January 1940	15.0 °C	1,145 mm	39	43

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

21.9 °C

+0.6 °C

Hot days (≥ 30 °C)

74 d/yr

Frost days (< 0 °C)

52 d/yr

Annual rainfall

1085 mm

-44 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.2 °C	-1.9 °C	34 mm	-56 mm
Feb	13.6 °C	+1.5 °C	79 mm	-8 mm
Mar	20.3 °C	+3.8 °C	80 mm	-22 mm
Apr	24.9 °C	+3.0 °C	86 mm	+2 mm
May	26.1 °C	+0.1 °C	156 mm	+66 mm
Jun	31.4 °C	+1.6 °C	98 mm	+3 mm
Jul	32.6 °C	+1.4 °C	149 mm	+23 mm
Aug	27.8 °C	-2.3 °C	159 mm	+43 mm
Sep	27.3 °C	+0.1 °C	62 mm	-41 mm
Oct	21.0 °C	-1.0 °C	74 mm	-1 mm
Nov	18.0 °C	+1.4 °C	53 mm	-26 mm
Dec	11.1 °C	-0.6 °C	55 mm	-28 mm

The year's extremes

Hottest day

36.9 °C

25 Jun 2025

Coldest day

-10.1 °C

23 Jan 2025

Wettest day

63.1 mm

6 Jul 2025

Windiest day

33.7 km/h

16 Feb 2025

Strongest gust

97.2 km/h

16 Feb 2025

Hottest feels-like

43.1 °C

25 Jun 2025

Coldest feels-like

-14.5 °C

23 Jan 2025

Snowiest day

5.8 cm

19 Feb 2025

Sunniest day

14.0 h

23 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Apex?

Apex has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,129 mm of precipitation per year.

What is the hottest day ever recorded in Apex?

The hottest day measured in Apex between 1940 and 2025 was 9 July 1977, reaching 41.5 °C.

What is the coldest day in Apex?

The coldest day measured in Apex between 1940 and 2025 was 21 January 1985, at -19.9 °C.

Does it snow in Apex?

Yes. Apex gets on average 14.1 cm of snow per year and has around 48 frost days.

Has the climate of Apex warmed?

Yes: Apex warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Apex?

The wettest day measured in Apex between 1940 and 2025 was 9 November 1962, with 111 mm of rain in 24 hours.

What was the windiest day in Apex?

The windiest day measured in Apex between 1940 and 2025 was 6 September 1996, with winds reaching 59.4 km/h.

What is the warmest month in Apex?

The warmest month in Apex is July (26.0 °C on average); the coldest is January (5.1 °C).

How much does it rain in Apex?

Apex receives on average 1,129 mm of precipitation per year, spread over about 123 rainy days.

Is it sunny in Apex?

Apex gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

What is the biggest single-day snowfall in Apex?

The heaviest 24-hour snowfall measured in Apex between 1940 and 2025 was 26 January 1966, with 26.6 cm.

Are there tropical nights in Apex?

Yes: Apex has on average 79 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Apex?

In Apex, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 29 June 2012, and the lowest was -26.2 °C on 21 January 1985.

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