Swannanoa 2 E Weather Records (USC00318442)

Record envelope, standing records and threshold days for Swannanoa 2 E (USC00318442), North Carolina, United States, with 57 years of record.

Key Facts for Swannanoa 2 E

Swannanoa 2 E (USC00318442) is a weather station in North Carolina, United States at 35.60 latitude and -82.37 longitude, 683 m (2,240 ft) above sea level.
The station reports from 1931 to 1987, 57 years of record.
1,464 records set at Swannanoa 2 E still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Swannanoa 2 E set a daily record precipitation of 30.2 mm (1.2 in) on 15 April 1987.

About the Station

Location: North Carolina, United States, 35.60 latitude, -82.37 longitude.
Elevation: 683 m (2,240 ft).
Period of record: 1931 to 1987, 57 years.
Eligible elements: prcp, snow, snwd.

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 Swannanoa 2 E. 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 Swannanoa 2 E, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.6 C (78.1 F)	-25.0 C (-13.0 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-17.8 C (0.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	-13.3 C (8.1 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-8.3 C (17.1 F)	n/a	n/a
May	33.9 C (93.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	36.1 C (97.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	36.1 C (97.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-13.9 C (7.0 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-18.3 C (-0.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Swannanoa 2 E still stand. 1933 holds the most, with 144.

All-Time Record Progression

1 new records

1 all-time records were set at Swannanoa 2 E between 29 May 1976 and 29 May 1976. Each dot is a new record.

Wettest Day of Each Month

May: 151.9 mm (6.0 in)

The wettest day on record for each calendar month at Swannanoa 2 E. The most was 151.9 mm (6.0 in) on 29 May 1976.

Record daily precipitation for each month at Swannanoa 2 E
Month	Record daily precipitation (mm)	Date
Jan	52.1 mm (2.1 in)	22 January 1954
Feb	71.1 mm (2.8 in)	3 February 1982
Mar	91.9 mm (3.6 in)	18 March 1983
Apr	105.4 mm (4.1 in)	5 April 1957
May	151.9 mm (6.0 in)	29 May 1976
Jun	94.5 mm (3.7 in)	21 June 1972
Jul	68.1 mm (2.7 in)	12 July 1949
Aug	124.5 mm (4.9 in)	13 August 1940
Sep	84.6 mm (3.3 in)	22 September 1932
Oct	109.7 mm (4.3 in)	9 October 1946
Nov	111.8 mm (4.4 in)	6 November 1977
Dec	69.1 mm (2.7 in)	7 December 1950

Period of Record Coverage

1931 to 1944

14 years of record at Swannanoa 2 E, 1931 to 1944. 2 years have data for under 90 percent of days and are left out of rankings: 1931, 1944.

Days with data per year at Swannanoa 2 E
Year	Days with data	Share of year	Complete
1931	296	81%	No
1932	359	98%	Yes
1933	364	100%	Yes
1934	334	92%	Yes
1935	363	99%	Yes
1936	360	98%	Yes
1937	355	97%	Yes
1938	362	99%	Yes
1939	364	100%	Yes
1940	364	99%	Yes
1941	337	92%	Yes
1942	354	97%	Yes
1943	334	92%	Yes
1944	271	74%	No

Latest Records

Latest records at Swannanoa 2 E
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1987	Swannanoa 2 E, US	daily rain	30.2 mm (1.2 in)	16.0 mm (0.6 in)	40 years	30 of 100 (Routine)
28 February 1987	Swannanoa 2 E, US	daily rain	25.9 mm (1.0 in)	0.5 mm (0.02 in)	48 years	19 of 100 (Routine)
16 February 1987	Swannanoa 2 E, US	daily rain	24.9 mm (1.0 in)	0.3 mm (0.01 in)	20 years	11 of 100 (Routine)
29 June 1986	Swannanoa 2 E, US	daily rain	31.2 mm (1.2 in)	4.3 mm (0.17 in)	28 years	16 of 100 (Routine)
25 February 1986	Swannanoa 2 E, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	52 years	25 of 100 (Routine)
30 November 1985	Swannanoa 2 E, US	daily rain	33.5 mm (1.3 in)	13.9 mm (0.5 in)	51 years	30 of 100 (Routine)
1 November 1985	Swannanoa 2 E, US	daily rain	55.9 mm (2.2 in)	9.9 mm (0.39 in)	34 years	22 of 100 (Routine)
17 August 1985	Swannanoa 2 E, US	daily rain	47.5 mm (1.9 in)	0.5 mm (0.02 in)	36 years	15 of 100 (Routine)
12 February 1985	Swannanoa 2 E, US	daily rain	57.9 mm (2.3 in)	33.5 mm (1.3 in)	37 years	44 of 100 (Notable)
12 February 1985	Swannanoa 2 E, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	53 years	20 of 100 (Routine)
11 November 1984	Swannanoa 2 E, US	daily rain	30.0 mm (1.2 in)	7.6 mm (0.30 in)	29 years	18 of 100 (Routine)
8 May 1984	Swannanoa 2 E, US	daily rain (Tie)	33.5 mm (1.3 in)	tie	24 years	3 of 100 (Routine)
7 May 1984	Swannanoa 2 E, US	daily rain	44.5 mm (1.8 in)	15.8 mm (0.6 in)	53 years	33 of 100 (Routine)
14 February 1984	Swannanoa 2 E, US	daily rain	62.2 mm (2.4 in)	26.6 mm (1.0 in)	40 years	39 of 100 (Notable)
6 February 1984	Swannanoa 2 E, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	4 years	1 of 100 (Routine)
12 October 1983	Swannanoa 2 E, US	daily rain	17.5 mm (0.7 in)	9.9 mm (0.39 in)	36 years	20 of 100 (Routine)
7 June 1983	Swannanoa 2 E, US	daily rain	29.5 mm (1.2 in)	4.6 mm (0.18 in)	29 years	17 of 100 (Routine)
19 April 1983	Swannanoa 2 E, US	monthly snow depth	7.6 cm (3.0 in)	2.5 cm (1.0 in)	52 years	20 of 100 (Routine)
19 April 1983	Swannanoa 2 E, US	monthly snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	1 year	20 of 100 (Routine)
6 April 1983	Swannanoa 2 E, US	daily rain	42.7 mm (1.7 in)	11.2 mm (0.4 in)	46 years	28 of 100 (Routine)

Extremes by Year

1931 to 1987

Yearly extremes at Swannanoa 2 E: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1931	34.2 C (93.5 F)	14
Coldest night (TNn)	-25.0 C (-13.0 F)	1940	-15.8 C (3.5 F)	14
Wettest day (Rx1day)	151.9 mm (6.0 in)	1976	63.8 mm (2.5 in)	57
Wettest five days (Rx5day)	254.6 mm (10.0 in)	1940	101.6 mm (4.0 in)	57
Longest dry spell (CDD)	49 days	1939	19 days	57

Hottest day (TXx)

The hottest day of the year at Swannanoa 2 E, 1931 to 1987. The record is 37.2 C (99.0 F) in 1931, marked on the chart; the median year is 34.2 C (93.5 F).

Hottest day (TXx) at Swannanoa 2 E by year
Year	Hottest day (TXx)
1931	37.2 C (99.0 F)
1932	36.1 C (97.0 F)
1933	36.1 C (97.0 F)
1934	35.0 C (95.0 F)
1935	33.9 C (93.0 F)
1936	36.7 C (98.1 F)
1937	33.9 C (93.0 F)
1938	33.3 C (91.9 F)
1939	35.0 C (95.0 F)
1940	33.9 C (93.0 F)
1941	33.9 C (93.0 F)
1942	33.3 C (91.9 F)
1943	34.4 C (93.9 F)
1944	33.9 C (93.0 F)
1945	n/a
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
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a

Coldest night (TNn)

The coldest night of the year at Swannanoa 2 E, 1931 to 1987. The record is -25.0 C (-13.0 F) in 1940, marked on the chart; the median year is -15.8 C (3.5 F).

Coldest night (TNn) at Swannanoa 2 E by year
Year	Coldest night (TNn)
1931	-8.3 C (17.1 F)
1932	-12.2 C (10.0 F)
1933	-17.8 C (0.0 F)
1934	-17.8 C (0.0 F)
1935	-18.3 C (-0.9 F)
1936	-16.1 C (3.0 F)
1937	-15.6 C (3.9 F)
1938	-12.2 C (10.0 F)
1939	-12.2 C (10.0 F)
1940	-25.0 C (-13.0 F)
1941	-13.9 C (7.0 F)
1942	-21.1 C (-6.0 F)
1943	-16.7 C (1.9 F)
1944	-11.7 C (10.9 F)
1945	n/a
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
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a

Wettest day (Rx1day)

The wettest day of the year at Swannanoa 2 E, 1931 to 1987. The record is 151.9 mm (6.0 in) in 1976, marked on the chart; the median year is 63.8 mm (2.5 in).

Wettest day (Rx1day) at Swannanoa 2 E by year
Year	Wettest day (Rx1day)
1931	39.4 mm (1.6 in)
1932	84.6 mm (3.3 in)
1933	56.4 mm (2.2 in)
1934	48.5 mm (1.9 in)
1935	78.7 mm (3.1 in)
1936	86.1 mm (3.4 in)
1937	70.1 mm (2.8 in)
1938	64.8 mm (2.6 in)
1939	63.5 mm (2.5 in)
1940	124.5 mm (4.9 in)
1941	49.0 mm (1.9 in)
1942	58.4 mm (2.3 in)
1943	64.8 mm (2.6 in)
1944	48.3 mm (1.9 in)
1945	50.8 mm (2.0 in)
1946	109.7 mm (4.3 in)
1947	58.4 mm (2.3 in)
1948	48.8 mm (1.9 in)
1949	68.1 mm (2.7 in)
1950	70.6 mm (2.8 in)
1951	46.0 mm (1.8 in)
1952	68.6 mm (2.7 in)
1953	68.6 mm (2.7 in)
1954	63.8 mm (2.5 in)
1955	54.6 mm (2.1 in)
1956	62.2 mm (2.4 in)
1957	105.4 mm (4.1 in)
1958	53.3 mm (2.1 in)
1959	39.4 mm (1.6 in)
1960	62.0 mm (2.4 in)
1961	66.5 mm (2.6 in)
1962	33.5 mm (1.3 in)
1963	61.0 mm (2.4 in)
1964	71.1 mm (2.8 in)
1965	83.3 mm (3.3 in)
1966	69.9 mm (2.8 in)
1967	65.8 mm (2.6 in)
1968	64.0 mm (2.5 in)
1969	43.2 mm (1.7 in)
1970	58.9 mm (2.3 in)
1971	53.8 mm (2.1 in)
1972	94.5 mm (3.7 in)
1973	108.0 mm (4.3 in)
1974	66.3 mm (2.6 in)
1975	63.0 mm (2.5 in)
1976	151.9 mm (6.0 in)
1977	111.8 mm (4.4 in)
1978	50.8 mm (2.0 in)
1979	81.5 mm (3.2 in)
1980	61.2 mm (2.4 in)
1981	67.8 mm (2.7 in)
1982	71.1 mm (2.8 in)
1983	91.9 mm (3.6 in)
1984	62.2 mm (2.4 in)
1985	57.9 mm (2.3 in)
1986	33.3 mm (1.3 in)
1987	30.2 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Swannanoa 2 E, 1931 to 1987. The record is 254.6 mm (10.0 in) in 1940, marked on the chart; the median year is 101.6 mm (4.0 in).

Wettest five days (Rx5day) at Swannanoa 2 E by year
Year	Wettest five days (Rx5day)
1931	60.8 mm (2.4 in)
1932	100.8 mm (4.0 in)
1933	90.5 mm (3.6 in)
1934	75.4 mm (3.0 in)
1935	92.7 mm (3.6 in)
1936	97.1 mm (3.8 in)
1937	104.4 mm (4.1 in)
1938	108.0 mm (4.3 in)
1939	76.2 mm (3.0 in)
1940	254.6 mm (10.0 in)
1941	112.2 mm (4.4 in)
1942	112.0 mm (4.4 in)
1943	123.5 mm (4.9 in)
1944	82.1 mm (3.2 in)
1945	52.4 mm (2.1 in)
1946	127.0 mm (5.0 in)
1947	103.4 mm (4.1 in)
1948	88.1 mm (3.5 in)
1949	130.5 mm (5.1 in)
1950	116.3 mm (4.6 in)
1951	74.2 mm (2.9 in)
1952	84.6 mm (3.3 in)
1953	76.5 mm (3.0 in)
1954	130.9 mm (5.2 in)
1955	70.8 mm (2.8 in)
1956	99.1 mm (3.9 in)
1957	148.8 mm (5.9 in)
1958	97.8 mm (3.9 in)
1959	113.5 mm (4.5 in)
1960	100.6 mm (4.0 in)
1961	178.5 mm (7.0 in)
1962	82.5 mm (3.2 in)
1963	101.6 mm (4.0 in)
1964	140.4 mm (5.5 in)
1965	107.4 mm (4.2 in)
1966	110.0 mm (4.3 in)
1967	167.1 mm (6.6 in)
1968	138.4 mm (5.4 in)
1969	81.1 mm (3.2 in)
1970	84.1 mm (3.3 in)
1971	89.7 mm (3.5 in)
1972	164.5 mm (6.5 in)
1973	131.6 mm (5.2 in)
1974	94.0 mm (3.7 in)
1975	102.5 mm (4.0 in)
1976	166.1 mm (6.5 in)
1977	157.3 mm (6.2 in)
1978	132.6 mm (5.2 in)
1979	104.8 mm (4.1 in)
1980	104.1 mm (4.1 in)
1981	67.8 mm (2.7 in)
1982	97.5 mm (3.8 in)
1983	120.8 mm (4.8 in)
1984	93.2 mm (3.7 in)
1985	96.8 mm (3.8 in)
1986	49.2 mm (1.9 in)
1987	71.9 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Swannanoa 2 E, 1931 to 1987. The record is 49 days in 1939, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Swannanoa 2 E by year
Year	Longest dry spell (CDD)
1931	20 days
1932	21 days
1933	15 days
1934	14 days
1935	40 days
1936	19 days
1937	14 days
1938	21 days
1939	49 days
1940	26 days
1941	18 days
1942	19 days
1943	25 days
1944	15 days
1945	16 days
1946	15 days
1947	15 days
1948	25 days
1949	22 days
1950	20 days
1951	24 days
1952	31 days
1953	23 days
1954	22 days
1955	22 days
1956	19 days
1957	16 days
1958	18 days
1959	21 days
1960	17 days
1961	15 days
1962	18 days
1963	33 days
1964	14 days
1965	19 days
1966	14 days
1967	19 days
1968	35 days
1969	18 days
1970	25 days
1971	14 days
1972	12 days
1973	25 days
1974	19 days
1975	11 days
1976	20 days
1977	16 days
1978	34 days
1979	25 days
1980	17 days
1981	24 days
1982	14 days
1983	33 days
1984	47 days
1985	27 days
1986	31 days
1987	17 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.

Rainfall Return Levels

50 years, 1932 to 1985

A day with at least 64.2 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 154.3 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Swannanoa 2 E: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	64.2 mm (2.5 in)
5 years	82.6 mm (3.3 in)
10 years	96.8 mm (3.8 in)
25 years	117.4 mm (4.6 in)
50 years	134.8 mm (5.3 in)
100 years	154.3 mm (6.1 in)	Longer than the 50 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, 50 years of values from 1932 to 1985.

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: 151.9 mm (6.0 in) in 1976; 124.5 mm (4.9 in) in 1940; 111.8 mm (4.4 in) in 1977.

Download the Data

Data for Swannanoa 2 E standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Swannanoa 2 E 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.

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