Altapass Weather Records (USC00310160)

Record envelope, standing records and threshold days for Altapass (USC00310160), North Carolina, United States, with 53 years of record.

Key Facts for Altapass

Altapass (USC00310160) is a weather station in North Carolina, United States at 35.90 latitude and -82.02 longitude, 842 m (2,762 ft) above sea level.
The station reports from 1910 to 1962, 53 years of record.
1,464 records set at Altapass still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Altapass set a daily record precipitation of 30.5 mm (1.2 in) on 23 February 1962.

About the Station

Location: North Carolina, United States, 35.90 latitude, -82.02 longitude.
Elevation: 842 m (2,762 ft).
Period of record: 1910 to 1962, 53 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Altapass. 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 Altapass, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.8 C (73.0 F)	-23.9 C (-11.0 F)	n/a	n/a
Feb	25.6 C (78.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Mar	26.1 C (79.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-13.3 C (8.1 F)	n/a	n/a
May	32.2 C (90.0 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	32.2 C (90.0 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	35.0 C (95.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	33.3 C (91.9 F)	3.9 C (39.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	29.4 C (84.9 F)	-28.3 C (-18.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Altapass still stand. 1917 holds the most, with 84.

Standing records at Altapass by the year they were set
Year set	Standing records
1912	13
1913	58
1914	36
1915	25
1916	68
1917	84
1918	72
1919	37
1920	56
1921	59
1922	52
1923	54
1924	52
1925	65
1926	48
1927	40
1928	24
1929	48
1930	56
1931	44
1932	51
1933	65
1934	53
1935	54
1936	57
1937	31
1938	32
1939	30
1940	57
1941	2
1942	23
1943	9
1945	9

Wettest Day of Each Month

Jul: 426.7 mm (16.8 in)

The wettest day on record for each calendar month at Altapass. The most was 426.7 mm (16.8 in) on 16 July 1916.

Record daily precipitation for each month at Altapass
Month	Record daily precipitation (mm)	Date
Jan	87.6 mm (3.4 in)	11 January 1924
Feb	76.2 mm (3.0 in)	21 February 1953
Mar	96.5 mm (3.8 in)	11 March 1952
Apr	155.2 mm (6.1 in)	14 April 1955
May	64.8 mm (2.6 in)	1 May 1932
Jun	79.5 mm (3.1 in)	5 June 1957
Jul	426.7 mm (16.8 in)	16 July 1916
Aug	162.6 mm (6.4 in)	14 August 1940
Sep	104.6 mm (4.1 in)	30 September 1959
Oct	129.5 mm (5.1 in)	25 October 1918
Nov	94.0 mm (3.7 in)	12 November 1935
Dec	74.9 mm (2.9 in)	8 December 1924

Period of Record Coverage

1912 to 1945

32 years of record at Altapass, 1912 to 1945. 18 years have data for under 90 percent of days and are left out of rankings: 1912, 1914, 1915, 1916, 1919, 1920, 1927, 1928 and others.

Days with data per year at Altapass
Year	Days with data	Share of year	Complete
1912	91	25%	No
1913	354	97%	Yes
1914	224	61%	No
1915	124	34%	No
1916	327	89%	No
1917	361	99%	Yes
1918	329	90%	Yes
1919	272	75%	No
1920	274	75%	No
1921	351	96%	Yes
1922	354	97%	Yes
1923	344	94%	Yes
1924	336	92%	Yes
1925	348	95%	Yes
1926	344	94%	Yes
1927	183	50%	No
1928	148	40%	No
1929	219	60%	No
1930	351	96%	Yes
1931	335	92%	Yes
1932	354	97%	Yes
1933	333	91%	Yes
1934	323	88%	No
1935	354	97%	Yes
1936	139	38%	No
1937	162	44%	No
1938	318	87%	No
1939	282	77%	No
1940	315	86%	No
1942	86	24%	No
1943	34	9%	No
1945	48	13%	No

Latest Records

Latest records at Altapass
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 February 1962	Altapass, US	daily rain	30.5 mm (1.2 in)	2.6 mm (0.10 in)	7 years	9 of 100 (Routine)
28 January 1962	Altapass, US	daily rain	17.5 mm (0.7 in)	2.3 mm (0.09 in)	48 years	20 of 100 (Routine)
12 December 1961	Altapass, US	daily rain	53.3 mm (2.1 in)	21.5 mm (0.8 in)	0 years	22 of 100 (Routine)
10 December 1961	Altapass, US	daily rain	35.6 mm (1.4 in)	15.3 mm (0.6 in)	8 years	19 of 100 (Routine)
24 November 1961	Altapass, US	daily rain	36.3 mm (1.4 in)	22.1 mm (0.9 in)	2 years	19 of 100 (Routine)
4 October 1961	Altapass, US	daily rain	27.4 mm (1.1 in)	3.5 mm (0.14 in)	0 years	6 of 100 (Routine)
25 August 1961	Altapass, US	daily rain	135.4 mm (5.3 in)	102.4 mm (4.0 in)	39 years	56 of 100 (Notable)
24 August 1961	Altapass, US	daily rain	52.6 mm (2.1 in)	14.5 mm (0.6 in)	36 years	24 of 100 (Routine)
21 June 1961	Altapass, US	daily rain	32.8 mm (1.3 in)	6.4 mm (0.25 in)	43 years	23 of 100 (Routine)
13 June 1961	Altapass, US	daily rain	37.3 mm (1.5 in)	9.4 mm (0.37 in)	32 years	23 of 100 (Routine)
12 May 1961	Altapass, US	daily rain	52.3 mm (2.1 in)	12.9 mm (0.5 in)	36 years	26 of 100 (Routine)
10 April 1961	Altapass, US	daily rain	40.6 mm (1.6 in)	32.0 mm (1.3 in)	36 years	35 of 100 (Notable)
8 March 1961	Altapass, US	daily rain	26.2 mm (1.0 in)	7.1 mm (0.28 in)	20 years	16 of 100 (Routine)
25 February 1961	Altapass, US	daily rain	66.5 mm (2.6 in)	38.6 mm (1.5 in)	47 years	53 of 100 (Notable)
15 January 1961	Altapass, US	daily rain	35.6 mm (1.4 in)	5.1 mm (0.20 in)	17 years	13 of 100 (Routine)
12 December 1960	Altapass, US	daily rain	31.8 mm (1.3 in)	17.8 mm (0.7 in)	28 years	27 of 100 (Routine)
11 December 1960	Altapass, US	daily rain	13.2 mm (0.5 in)	0.5 mm (0.02 in)	8 years	7 of 100 (Routine)
4 October 1960	Altapass, US	daily rain	23.9 mm (0.9 in)	14.2 mm (0.6 in)	3 years	12 of 100 (Routine)
26 July 1960	Altapass, US	daily rain	43.7 mm (1.7 in)	20.8 mm (0.8 in)	32 years	23 of 100 (Routine)
28 May 1960	Altapass, US	daily rain	49.5 mm (1.9 in)	27.7 mm (1.1 in)	17 years	35 of 100 (Notable)

Extremes by Year

1910 to 1962

Yearly extremes at Altapass: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1914	31.7 C (89.1 F)	32
Coldest night (TNn)	-28.3 C (-18.9 F)	1917	-15.6 C (3.9 F)	33
Wettest day (Rx1day)	426.7 mm (16.8 in)	1916	73.7 mm (2.9 in)	53
Wettest five days (Rx5day)	545.1 mm (21.5 in)	1916	115.6 mm (4.6 in)	53
Longest dry spell (CDD)	47 days	1935	20 days	53

Hottest day (TXx)

The hottest day of the year at Altapass, 1910 to 1962. The record is 35.0 C (95.0 F) in 1914, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Altapass by year
Year	Hottest day (TXx)
1910	n/a
1911	n/a
1912	22.2 C (72.0 F)
1913	32.2 C (90.0 F)
1914	35.0 C (95.0 F)
1915	32.8 C (91.0 F)
1916	32.2 C (90.0 F)
1917	31.7 C (89.1 F)
1918	32.2 C (90.0 F)
1919	29.4 C (84.9 F)
1920	28.3 C (82.9 F)
1921	30.0 C (86.0 F)
1922	30.0 C (86.0 F)
1923	30.0 C (86.0 F)
1924	29.4 C (84.9 F)
1925	33.9 C (93.0 F)
1926	33.3 C (91.9 F)
1927	29.4 C (84.9 F)
1928	27.2 C (81.0 F)
1929	26.7 C (80.1 F)
1930	31.7 C (89.1 F)
1931	31.7 C (89.1 F)
1932	33.9 C (93.0 F)
1933	32.2 C (90.0 F)
1934	33.3 C (91.9 F)
1935	31.7 C (89.1 F)
1936	31.7 C (89.1 F)
1937	33.3 C (91.9 F)
1938	31.1 C (88.0 F)
1939	32.2 C (90.0 F)
1940	32.2 C (90.0 F)
1941	n/a
1942	29.4 C (84.9 F)
1943	23.9 C (75.0 F)
1944	n/a
1945	30.6 C (87.1 F)
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a

Coldest night (TNn)

The coldest night of the year at Altapass, 1910 to 1962. The record is -28.3 C (-18.9 F) in 1917, marked on the chart; the median year is -15.6 C (3.9 F).

Coldest night (TNn) at Altapass by year
Year	Coldest night (TNn)
1910	n/a
1911	n/a
1912	-8.3 C (17.1 F)
1913	-11.1 C (12.0 F)
1914	-15.6 C (3.9 F)
1915	-10.0 C (14.0 F)
1916	-15.6 C (3.9 F)
1917	-28.3 C (-18.9 F)
1918	-21.7 C (-7.1 F)
1919	-16.1 C (3.0 F)
1920	-18.3 C (-0.9 F)
1921	-11.7 C (10.9 F)
1922	-12.2 C (10.0 F)
1923	-15.6 C (3.9 F)
1924	-21.1 C (-6.0 F)
1925	-16.7 C (1.9 F)
1926	-14.4 C (6.1 F)
1927	-18.3 C (-0.9 F)
1928	-3.9 C (25.0 F)
1929	-17.2 C (1.0 F)
1930	-18.3 C (-0.9 F)
1931	-15.6 C (3.9 F)
1932	-15.0 C (5.0 F)
1933	-20.0 C (-4.0 F)
1934	-12.8 C (9.0 F)
1935	-16.1 C (3.0 F)
1936	-23.9 C (-11.0 F)
1937	-16.7 C (1.9 F)
1938	-15.0 C (5.0 F)
1939	-14.4 C (6.1 F)
1940	-18.9 C (-2.0 F)
1941	-13.3 C (8.1 F)
1942	-8.3 C (17.1 F)
1943	-16.7 C (1.9 F)
1944	n/a
1945	-1.1 C (30.0 F)
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a

Wettest day (Rx1day)

The wettest day of the year at Altapass, 1910 to 1962. The record is 426.7 mm (16.8 in) in 1916, marked on the chart; the median year is 73.7 mm (2.9 in).

Wettest day (Rx1day) at Altapass by year
Year	Wettest day (Rx1day)
1910	2.5 mm (0.10 in)
1911	43.2 mm (1.7 in)
1912	76.2 mm (3.0 in)
1913	50.8 mm (2.0 in)
1914	81.3 mm (3.2 in)
1915	53.3 mm (2.1 in)
1916	426.7 mm (16.8 in)
1917	63.5 mm (2.5 in)
1918	129.5 mm (5.1 in)
1919	45.7 mm (1.8 in)
1920	51.1 mm (2.0 in)
1921	94.0 mm (3.7 in)
1922	94.0 mm (3.7 in)
1923	71.1 mm (2.8 in)
1924	87.6 mm (3.4 in)
1925	58.4 mm (2.3 in)
1926	93.5 mm (3.7 in)
1927	103.6 mm (4.1 in)
1928	104.1 mm (4.1 in)
1929	96.5 mm (3.8 in)
1930	49.5 mm (1.9 in)
1931	73.7 mm (2.9 in)
1932	77.5 mm (3.1 in)
1933	68.6 mm (2.7 in)
1934	66.0 mm (2.6 in)
1935	94.0 mm (3.7 in)
1936	89.9 mm (3.5 in)
1937	31.8 mm (1.3 in)
1938	88.9 mm (3.5 in)
1939	105.4 mm (4.1 in)
1940	162.6 mm (6.4 in)
1941	104.1 mm (4.1 in)
1942	42.2 mm (1.7 in)
1943	51.1 mm (2.0 in)
1944	76.7 mm (3.0 in)
1945	94.0 mm (3.7 in)
1946	70.9 mm (2.8 in)
1947	46.2 mm (1.8 in)
1948	55.9 mm (2.2 in)
1949	63.5 mm (2.5 in)
1950	43.4 mm (1.7 in)
1951	73.7 mm (2.9 in)
1952	96.5 mm (3.8 in)
1953	76.2 mm (3.0 in)
1954	67.1 mm (2.6 in)
1955	155.2 mm (6.1 in)
1956	45.0 mm (1.8 in)
1957	118.1 mm (4.6 in)
1958	56.6 mm (2.2 in)
1959	104.6 mm (4.1 in)
1960	49.5 mm (1.9 in)
1961	135.4 mm (5.3 in)
1962	30.5 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Altapass, 1910 to 1962. The record is 545.1 mm (21.5 in) in 1916, marked on the chart; the median year is 115.6 mm (4.6 in).

Wettest five days (Rx5day) at Altapass by year
Year	Wettest five days (Rx5day)
1910	2.5 mm (0.10 in)
1911	34.6 mm (1.4 in)
1912	76.2 mm (3.0 in)
1913	84.8 mm (3.3 in)
1914	132.6 mm (5.2 in)
1915	126.0 mm (5.0 in)
1916	545.1 mm (21.5 in)
1917	90.7 mm (3.6 in)
1918	264.1 mm (10.4 in)
1919	67.0 mm (2.6 in)
1920	95.2 mm (3.7 in)
1921	132.1 mm (5.2 in)
1922	134.9 mm (5.3 in)
1923	71.1 mm (2.8 in)
1924	130.1 mm (5.1 in)
1925	82.5 mm (3.2 in)
1926	199.0 mm (7.8 in)
1927	127.7 mm (5.0 in)
1928	180.3 mm (7.1 in)
1929	125.8 mm (5.0 in)
1930	51.6 mm (2.0 in)
1931	128.5 mm (5.1 in)
1932	110.6 mm (4.4 in)
1933	68.6 mm (2.7 in)
1934	112.8 mm (4.4 in)
1935	124.7 mm (4.9 in)
1936	107.9 mm (4.2 in)
1937	63.5 mm (2.5 in)
1938	127.5 mm (5.0 in)
1939	115.6 mm (4.6 in)
1940	257.3 mm (10.1 in)
1941	121.9 mm (4.8 in)
1942	47.3 mm (1.9 in)
1943	71.1 mm (2.8 in)
1944	88.9 mm (3.5 in)
1945	223.5 mm (8.8 in)
1946	120.9 mm (4.8 in)
1947	74.2 mm (2.9 in)
1948	105.4 mm (4.1 in)
1949	174.0 mm (6.9 in)
1950	128.7 mm (5.1 in)
1951	122.8 mm (4.8 in)
1952	97.3 mm (3.8 in)
1953	100.0 mm (3.9 in)
1954	131.1 mm (5.2 in)
1955	213.1 mm (8.4 in)
1956	132.3 mm (5.2 in)
1957	192.2 mm (7.6 in)
1958	98.0 mm (3.9 in)
1959	105.9 mm (4.2 in)
1960	86.9 mm (3.4 in)
1961	238.3 mm (9.4 in)
1962	100.1 mm (3.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Altapass, 1910 to 1962. The record is 47 days in 1935, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Altapass by year
Year	Longest dry spell (CDD)
1910	23 days
1911	9 days
1912	25 days
1913	24 days
1914	12 days
1915	15 days
1916	25 days
1917	40 days
1918	25 days
1919	25 days
1920	28 days
1921	26 days
1922	40 days
1923	18 days
1924	25 days
1925	27 days
1926	13 days
1927	23 days
1928	9 days
1929	15 days
1930	18 days
1931	29 days
1932	11 days
1933	19 days
1934	23 days
1935	47 days
1936	12 days
1937	12 days
1938	20 days
1939	17 days
1940	22 days
1941	20 days
1942	21 days
1943	38 days
1944	17 days
1945	15 days
1946	22 days
1947	19 days
1948	18 days
1949	15 days
1950	17 days
1951	28 days
1952	40 days
1953	22 days
1954	15 days
1955	22 days
1956	23 days
1957	15 days
1958	18 days
1959	20 days
1960	16 days
1961	15 days
1962	10 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.

Download the Data

Data for Altapass standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Altapass 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).