Bolton Weather Records (USC00400884)

Record envelope, standing records and threshold days for Bolton (USC00400884), Tennessee, United States, with 88 years of record.

Key Facts for Bolton

Bolton (USC00400884) is a weather station in Tennessee, United States at 35.32 latitude and -89.75 longitude, 91 m (300 ft) above sea level.
The station reports from 1902 to 1989, 88 years of record.
1,464 records set at Bolton still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Bolton set a daily record precipitation of 55.4 mm (2.2 in) on 17 October 1989.

About the Station

Location: Tennessee, United States, 35.32 latitude, -89.75 longitude.
Elevation: 91 m (300 ft).
Period of record: 1902 to 1989, 88 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 Bolton. 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 Bolton, 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)	-23.9 C (-11.0 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-15.0 C (5.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-7.8 C (18.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-2.2 C (28.0 F)	n/a	n/a
May	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	38.9 C (102.0 F)	11.1 C (52.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	33.9 C (93.0 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Bolton still stand. 1917 holds the most, with 192.

Standing records at Bolton by the year they were set
Year set	Standing records
1902	29
1903	63
1904	42
1905	42
1906	35
1907	50
1908	45
1909	42
1910	38
1911	63
1912	37
1913	47
1914	77
1915	84
1916	182
1917	192
1918	190
1919	125
1920	81

All-Time Record Progression

1 new records

1 all-time records were set at Bolton between 25 December 1987 and 25 December 1987. Each dot is a new record.

Wettest Day of Each Month

Dec: 228.6 mm (9.0 in)

The wettest day on record for each calendar month at Bolton. The most was 228.6 mm (9.0 in) on 25 December 1987.

Record daily precipitation for each month at Bolton
Month	Record daily precipitation (mm)	Date
Jan	89.2 mm (3.5 in)	31 January 1950
Feb	116.1 mm (4.6 in)	28 February 1954
Mar	207.0 mm (8.1 in)	17 March 1919
Apr	140.2 mm (5.5 in)	2 April 1979
May	135.9 mm (5.4 in)	26 May 1963
Jun	153.9 mm (6.1 in)	7 June 1974
Jul	90.2 mm (3.6 in)	21 July 1953
Aug	134.6 mm (5.3 in)	23 August 1972
Sep	88.9 mm (3.5 in)	20 September 1958
Oct	81.3 mm (3.2 in)	6 October 1910
Nov	114.3 mm (4.5 in)	23 November 1983
Dec	228.6 mm (9.0 in)	25 December 1987

Period of Record Coverage

1902 to 1920

19 years of record at Bolton, 1902 to 1920. 16 years have data for under 90 percent of days and are left out of rankings: 1902, 1903, 1904, 1905, 1906, 1907, 1908, 1909 and others.

Days with data per year at Bolton
Year	Days with data	Share of year	Complete
1902	30	8%	No
1903	213	58%	No
1904	212	58%	No
1905	211	58%	No
1906	211	58%	No
1907	207	57%	No
1908	212	58%	No
1909	208	57%	No
1910	212	58%	No
1911	214	59%	No
1912	214	58%	No
1913	213	58%	No
1914	213	58%	No
1915	263	72%	No
1916	352	96%	Yes
1917	338	93%	Yes
1918	335	92%	Yes
1919	328	90%	No
1920	112	31%	No

Latest Records

Latest records at Bolton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1989	Bolton, US	daily rain	55.4 mm (2.2 in)	11.7 mm (0.5 in)	22 years	21 of 100 (Routine)
1 September 1989	Bolton, US	daily rain	31.8 mm (1.3 in)	3.6 mm (0.14 in)	84 years	35 of 100 (Notable)
24 July 1989	Bolton, US	daily rain	43.9 mm (1.7 in)	24.6 mm (1.0 in)	30 years	34 of 100 (Routine)
19 July 1989	Bolton, US	daily rain	43.2 mm (1.7 in)	24.9 mm (1.0 in)	76 years	49 of 100 (Notable)
2 July 1989	Bolton, US	daily rain	62.0 mm (2.4 in)	16.3 mm (0.6 in)	28 years	27 of 100 (Routine)
12 June 1989	Bolton, US	daily rain	21.6 mm (0.9 in)	2.3 mm (0.09 in)	4 years	10 of 100 (Routine)
5 June 1989	Bolton, US	daily rain	41.9 mm (1.6 in)	12.7 mm (0.5 in)	84 years	41 of 100 (Notable)
29 March 1989	Bolton, US	daily rain	54.9 mm (2.2 in)	7.1 mm (0.28 in)	12 years	15 of 100 (Routine)
3 February 1989	Bolton, US	daily rain (Tie)	25.7 mm (1.0 in)	tie	33 years	4 of 100 (Routine)
26 January 1989	Bolton, US	daily rain	15.2 mm (0.6 in)	2.5 mm (0.10 in)	16 years	13 of 100 (Routine)
12 January 1989	Bolton, US	daily rain	43.2 mm (1.7 in)	33.5 mm (1.3 in)	39 years	41 of 100 (Notable)
6 January 1989	Bolton, US	daily rain	20.3 mm (0.8 in)	1.2 mm (0.05 in)	29 years	16 of 100 (Routine)
27 December 1988	Bolton, US	daily rain	62.2 mm (2.4 in)	29.7 mm (1.2 in)	6 years	24 of 100 (Routine)
21 December 1988	Bolton, US	daily rain	43.9 mm (1.7 in)	27.1 mm (1.1 in)	10 years	24 of 100 (Routine)
20 November 1988	Bolton, US	daily rain	97.8 mm (3.9 in)	41.4 mm (1.6 in)	5 years	32 of 100 (Routine)
19 November 1988	Bolton, US	daily rain	76.2 mm (3.0 in)	27.9 mm (1.1 in)	19 years	28 of 100 (Routine)
19 September 1988	Bolton, US	daily rain	18.5 mm (0.7 in)	3.3 mm (0.13 in)	22 years	16 of 100 (Routine)
16 September 1988	Bolton, US	daily rain	73.7 mm (2.9 in)	18.8 mm (0.7 in)	26 years	26 of 100 (Routine)
25 July 1988	Bolton, US	daily rain	43.2 mm (1.7 in)	5.1 mm (0.20 in)	75 years	33 of 100 (Routine)
13 July 1988	Bolton, US	daily rain	83.3 mm (3.3 in)	62.5 mm (2.5 in)	27 years	56 of 100 (Notable)

Extremes by Year

1902 to 1989

Yearly extremes at Bolton: 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)	1911	37.2 C (99.0 F)	19
Coldest night (TNn)	-23.9 C (-11.0 F)	1918	-2.2 C (28.0 F)	19
Wettest day (Rx1day)	228.6 mm (9.0 in)	1987	80.0 mm (3.1 in)	69
Wettest five days (Rx5day)	347.8 mm (13.7 in)	1987	126.8 mm (5.0 in)	69
Longest dry spell (CDD)	38 days	1953	20 days	69

Hottest day (TXx)

The hottest day of the year at Bolton, 1902 to 1989. The record is 40.0 C (104.0 F) in 1911, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Bolton by year
Year	Hottest day (TXx)
1902	25.6 C (78.1 F)
1903	36.7 C (98.1 F)
1904	36.1 C (97.0 F)
1905	37.2 C (99.0 F)
1906	35.6 C (96.1 F)
1907	37.2 C (99.0 F)
1908	36.7 C (98.1 F)
1909	37.8 C (100.0 F)
1910	36.1 C (97.0 F)
1911	40.0 C (104.0 F)
1912	36.7 C (98.1 F)
1913	38.3 C (100.9 F)
1914	39.4 C (102.9 F)
1915	38.9 C (102.0 F)
1916	38.9 C (102.0 F)
1917	36.7 C (98.1 F)
1918	38.3 C (100.9 F)
1919	37.2 C (99.0 F)
1920	30.0 C (86.0 F)
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
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
1988	n/a
1989	n/a

Coldest night (TNn)

The coldest night of the year at Bolton, 1902 to 1989. The record is -23.9 C (-11.0 F) in 1918, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Bolton by year
Year	Coldest night (TNn)
1902	-2.2 C (28.0 F)
1903	-3.9 C (25.0 F)
1904	-1.7 C (28.9 F)
1905	-0.6 C (30.9 F)
1906	-1.1 C (30.0 F)
1907	-1.1 C (30.0 F)
1908	0.0 C (32.0 F)
1909	-2.8 C (27.0 F)
1910	-2.2 C (28.0 F)
1911	0.0 C (32.0 F)
1912	1.1 C (34.0 F)
1913	-2.2 C (28.0 F)
1914	-2.8 C (27.0 F)
1915	-6.7 C (19.9 F)
1916	-16.7 C (1.9 F)
1917	-17.2 C (1.0 F)
1918	-23.9 C (-11.0 F)
1919	-9.4 C (15.1 F)
1920	-10.0 C (14.0 F)
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
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
1988	n/a
1989	n/a

Wettest day (Rx1day)

The wettest day of the year at Bolton, 1902 to 1989. The record is 228.6 mm (9.0 in) in 1987, marked on the chart; the median year is 80.0 mm (3.1 in).

Wettest day (Rx1day) at Bolton by year
Year	Wettest day (Rx1day)
1902	48.3 mm (1.9 in)
1903	55.9 mm (2.2 in)
1904	62.2 mm (2.4 in)
1905	71.1 mm (2.8 in)
1906	62.2 mm (2.4 in)
1907	50.8 mm (2.0 in)
1908	106.7 mm (4.2 in)
1909	67.8 mm (2.7 in)
1910	106.4 mm (4.2 in)
1911	83.8 mm (3.3 in)
1912	106.7 mm (4.2 in)
1913	63.5 mm (2.5 in)
1914	114.3 mm (4.5 in)
1915	94.0 mm (3.7 in)
1916	50.8 mm (2.0 in)
1917	44.5 mm (1.8 in)
1918	122.2 mm (4.8 in)
1919	207.0 mm (8.1 in)
1920	111.8 mm (4.4 in)
1940	40.6 mm (1.6 in)
1941	56.4 mm (2.2 in)
1942	56.6 mm (2.2 in)
1943	71.4 mm (2.8 in)
1944	101.9 mm (4.0 in)
1945	64.0 mm (2.5 in)
1946	53.8 mm (2.1 in)
1947	74.7 mm (2.9 in)
1948	110.7 mm (4.4 in)
1949	100.8 mm (4.0 in)
1950	89.2 mm (3.5 in)
1951	104.1 mm (4.1 in)
1952	40.1 mm (1.6 in)
1953	90.2 mm (3.6 in)
1954	116.1 mm (4.6 in)
1955	68.6 mm (2.7 in)
1956	65.3 mm (2.6 in)
1957	81.3 mm (3.2 in)
1958	88.9 mm (3.5 in)
1959	97.8 mm (3.9 in)
1960	80.8 mm (3.2 in)
1961	76.7 mm (3.0 in)
1962	88.1 mm (3.5 in)
1963	135.9 mm (5.4 in)
1964	74.4 mm (2.9 in)
1965	68.1 mm (2.7 in)
1966	80.0 mm (3.1 in)
1967	61.5 mm (2.4 in)
1968	68.6 mm (2.7 in)
1969	54.1 mm (2.1 in)
1970	77.5 mm (3.1 in)
1971	72.1 mm (2.8 in)
1972	134.6 mm (5.3 in)
1973	103.1 mm (4.1 in)
1974	153.9 mm (6.1 in)
1975	76.7 mm (3.0 in)
1976	48.5 mm (1.9 in)
1977	88.4 mm (3.5 in)
1978	91.4 mm (3.6 in)
1979	140.2 mm (5.5 in)
1980	86.4 mm (3.4 in)
1981	72.4 mm (2.9 in)
1982	101.6 mm (4.0 in)
1983	114.3 mm (4.5 in)
1984	78.7 mm (3.1 in)
1985	67.8 mm (2.7 in)
1986	81.5 mm (3.2 in)
1987	228.6 mm (9.0 in)
1988	97.8 mm (3.9 in)
1989	62.0 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bolton, 1902 to 1989. The record is 347.8 mm (13.7 in) in 1987, marked on the chart; the median year is 126.8 mm (5.0 in).

Wettest five days (Rx5day) at Bolton by year
Year	Wettest five days (Rx5day)
1902	57.7 mm (2.3 in)
1903	92.7 mm (3.6 in)
1904	78.2 mm (3.1 in)
1905	120.2 mm (4.7 in)
1906	154.9 mm (6.1 in)
1907	116.8 mm (4.6 in)
1908	147.3 mm (5.8 in)
1909	67.8 mm (2.7 in)
1910	121.9 mm (4.8 in)
1911	95.2 mm (3.7 in)
1912	146.1 mm (5.8 in)
1913	100.2 mm (3.9 in)
1914	123.9 mm (4.9 in)
1915	147.3 mm (5.8 in)
1916	126.9 mm (5.0 in)
1917	73.9 mm (2.9 in)
1918	125.5 mm (4.9 in)
1919	255.3 mm (10.1 in)
1920	135.5 mm (5.3 in)
1940	47.2 mm (1.9 in)
1941	89.2 mm (3.5 in)
1942	96.6 mm (3.8 in)
1943	115.6 mm (4.6 in)
1944	150.1 mm (5.9 in)
1945	118.9 mm (4.7 in)
1946	63.5 mm (2.5 in)
1947	108.8 mm (4.3 in)
1948	119.6 mm (4.7 in)
1949	164.5 mm (6.5 in)
1950	167.4 mm (6.6 in)
1951	113.5 mm (4.5 in)
1952	50.9 mm (2.0 in)
1953	145.0 mm (5.7 in)
1954	127.3 mm (5.0 in)
1955	118.9 mm (4.7 in)
1956	129.7 mm (5.1 in)
1957	151.7 mm (6.0 in)
1958	138.2 mm (5.4 in)
1959	140.3 mm (5.5 in)
1960	136.7 mm (5.4 in)
1961	101.6 mm (4.0 in)
1962	128.6 mm (5.1 in)
1963	158.8 mm (6.3 in)
1964	118.3 mm (4.7 in)
1965	138.7 mm (5.5 in)
1966	115.5 mm (4.5 in)
1967	106.4 mm (4.2 in)
1968	113.1 mm (4.5 in)
1969	155.1 mm (6.1 in)
1970	147.4 mm (5.8 in)
1971	98.0 mm (3.9 in)
1972	149.4 mm (5.9 in)
1973	172.2 mm (6.8 in)
1974	195.4 mm (7.7 in)
1975	185.7 mm (7.3 in)
1976	116.9 mm (4.6 in)
1977	169.7 mm (6.7 in)
1978	147.3 mm (5.8 in)
1979	175.5 mm (6.9 in)
1980	160.5 mm (6.3 in)
1981	105.5 mm (4.2 in)
1982	145.8 mm (5.7 in)
1983	185.4 mm (7.3 in)
1984	112.4 mm (4.4 in)
1985	105.2 mm (4.1 in)
1986	121.1 mm (4.8 in)
1987	347.8 mm (13.7 in)
1988	174.0 mm (6.9 in)
1989	126.8 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bolton, 1902 to 1989. The record is 38 days in 1953, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Bolton by year
Year	Longest dry spell (CDD)
1902	8 days
1903	21 days
1904	25 days
1905	13 days
1906	25 days
1907	15 days
1908	33 days
1909	27 days
1910	22 days
1911	19 days
1912	19 days
1913	18 days
1914	31 days
1915	23 days
1916	22 days
1917	21 days
1918	19 days
1919	32 days
1920	11 days
1940	10 days
1941	14 days
1942	18 days
1943	28 days
1944	14 days
1945	19 days
1946	21 days
1947	24 days
1948	21 days
1949	15 days
1950	17 days
1951	27 days
1952	31 days
1953	38 days
1954	31 days
1955	23 days
1956	21 days
1957	15 days
1958	15 days
1959	15 days
1960	18 days
1961	28 days
1962	25 days
1963	33 days
1964	20 days
1965	27 days
1966	20 days
1967	18 days
1968	19 days
1969	16 days
1970	17 days
1971	17 days
1972	17 days
1973	15 days
1974	17 days
1975	25 days
1976	16 days
1977	21 days
1978	27 days
1979	20 days
1980	24 days
1981	23 days
1982	17 days
1983	24 days
1984	13 days
1985	17 days
1986	23 days
1987	19 days
1988	35 days
1989	23 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

42 years, 1916 to 1988

A day with at least 83.5 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 241.6 mm (9.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Bolton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	83.5 mm (3.3 in)
5 years	114.4 mm (4.5 in)
10 years	138.8 mm (5.5 in)
25 years	175.0 mm (6.9 in)
50 years	206.2 mm (8.1 in)	Longer than the 42 years of record
100 years	241.6 mm (9.5 in)	Longer than the 42 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, 42 years of values from 1916 to 1988.

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: 228.6 mm (9.0 in) in 1987; 207.0 mm (8.1 in) in 1919; 153.9 mm (6.1 in) in 1974.

Download the Data

Data for Bolton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bolton 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).