Rock Island 2 NW Weather Records (USC00407811)

Record envelope, standing records and threshold days for Rock Island 2 NW (USC00407811), Tennessee, United States, with 59 years of record.

Key Facts for Rock Island 2 NW

Rock Island 2 NW (USC00407811) is a weather station in Tennessee, United States at 35.81 latitude and -85.63 longitude, 265 m (870 ft) above sea level.
The station reports from 1904 to 1962, 59 years of record.
120 records set at Rock Island 2 NW still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Rock Island 2 NW set a daily record precipitation of 63.0 mm (2.5 in) on 28 February 1962.

About the Station

Location: Tennessee, United States, 35.81 latitude, -85.63 longitude.
Elevation: 265 m (870 ft).
Period of record: 1904 to 1962, 59 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 Rock Island 2 NW. 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 Rock Island 2 NW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	26.1 C (79.0 F)	-6.7 C (19.9 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

120 standing records

120 records at Rock Island 2 NW still stand. 1915 holds the most, with 120.

All-Time Record Progression

1 new records

1 all-time records were set at Rock Island 2 NW between 1 September 1961 and 1 September 1961. Each dot is a new record.

Wettest Day of Each Month

Sep: 156.7 mm (6.2 in)

The wettest day on record for each calendar month at Rock Island 2 NW. The most was 156.7 mm (6.2 in) on 1 September 1961.

Record daily precipitation for each month at Rock Island 2 NW
Month	Record daily precipitation (mm)	Date
Jan	127.0 mm (5.0 in)	7 January 1913
Feb	93.2 mm (3.7 in)	1 February 1951
Mar	154.9 mm (6.1 in)	23 March 1929
Apr	92.7 mm (3.6 in)	2 April 1912
May	72.4 mm (2.9 in)	19 May 1953
Jun	93.0 mm (3.7 in)	26 June 1911
Jul	130.6 mm (5.1 in)	3 July 1936
Aug	61.0 mm (2.4 in)	16 August 1935
Sep	156.7 mm (6.2 in)	1 September 1961
Oct	89.4 mm (3.5 in)	16 October 1932
Nov	92.2 mm (3.6 in)	16 November 1927
Dec	95.8 mm (3.8 in)	29 December 1954

Period of Record Coverage

1915 to 1915

1 years of record at Rock Island 2 NW, 1915 to 1915. 1 years have data for under 90 percent of days and are left out of rankings: 1915.

Latest Records

Latest records at Rock Island 2 NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 February 1962	Rock Island 2 NW, US	daily rain	63.0 mm (2.5 in)	38.9 mm (1.5 in)	22 years	41 of 100 (Notable)
26 February 1962	Rock Island 2 NW, US	daily rain	36.1 mm (1.4 in)	8.2 mm (0.32 in)	50 years	26 of 100 (Routine)
28 January 1962	Rock Island 2 NW, US	daily rain	52.6 mm (2.1 in)	3.6 mm (0.14 in)	4 years	8 of 100 (Routine)
23 January 1962	Rock Island 2 NW, US	daily rain	62.2 mm (2.4 in)	38.1 mm (1.5 in)	24 years	38 of 100 (Notable)
24 November 1961	Rock Island 2 NW, US	daily rain	17.8 mm (0.7 in)	1.0 mm (0.04 in)	10 years	8 of 100 (Routine)
1 September 1961	Rock Island 2 NW, US	all-time rain	156.7 mm (6.2 in)	1.8 mm (0.07 in)	53 years	42 of 100 (Notable)
21 June 1961	Rock Island 2 NW, US	daily rain	31.2 mm (1.2 in)	0.7 mm (0.03 in)	51 years	20 of 100 (Routine)
8 March 1961	Rock Island 2 NW, US	daily rain	86.9 mm (3.4 in)	60.5 mm (2.4 in)	56 years	58 of 100 (Notable)
10 November 1960	Rock Island 2 NW, US	daily rain	30.0 mm (1.2 in)	7.4 mm (0.29 in)	8 years	12 of 100 (Routine)
20 October 1960	Rock Island 2 NW, US	daily rain	24.1 mm (0.9 in)	3.8 mm (0.15 in)	42 years	19 of 100 (Routine)
17 September 1960	Rock Island 2 NW, US	daily rain	48.5 mm (1.9 in)	40.6 mm (1.6 in)	2 years	28 of 100 (Routine)
11 September 1960	Rock Island 2 NW, US	daily rain	35.6 mm (1.4 in)	5.1 mm (0.20 in)	53 years	22 of 100 (Routine)
22 August 1960	Rock Island 2 NW, US	daily rain	22.9 mm (0.9 in)	5.6 mm (0.22 in)	11 years	12 of 100 (Routine)
11 July 1960	Rock Island 2 NW, US	daily rain	46.5 mm (1.8 in)	8.4 mm (0.33 in)	34 years	20 of 100 (Routine)
4 July 1960	Rock Island 2 NW, US	daily rain	43.9 mm (1.7 in)	3.3 mm (0.13 in)	9 years	9 of 100 (Routine)
27 June 1960	Rock Island 2 NW, US	daily rain	10.2 mm (0.4 in)	3.6 mm (0.14 in)	31 years	16 of 100 (Routine)
17 June 1960	Rock Island 2 NW, US	daily rain	29.2 mm (1.1 in)	8.9 mm (0.35 in)	26 years	18 of 100 (Routine)
8 May 1960	Rock Island 2 NW, US	daily rain	41.7 mm (1.6 in)	13.5 mm (0.5 in)	4 years	17 of 100 (Routine)
3 March 1960	Rock Island 2 NW, US	daily rain	42.7 mm (1.7 in)	5.4 mm (0.21 in)	20 years	14 of 100 (Routine)
19 December 1959	Rock Island 2 NW, US	daily rain	74.7 mm (2.9 in)	60.0 mm (2.4 in)	9 years	47 of 100 (Notable)

Extremes by Year

1904 to 1962

Yearly extremes at Rock Island 2 NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	26.1 C (79.0 F)	1915	26.1 C (79.0 F)	1
Coldest night (TNn)	-6.7 C (19.9 F)	1915	-6.7 C (19.9 F)	1
Wettest day (Rx1day)	156.7 mm (6.2 in)	1961	71.8 mm (2.8 in)	52
Wettest five days (Rx5day)	266.4 mm (10.5 in)	1929	112.3 mm (4.4 in)	52
Longest dry spell (CDD)	31 days	1953	19 days	52

Hottest day (TXx)

The hottest day of the year at Rock Island 2 NW, 1904 to 1962. The record is 26.1 C (79.0 F) in 1915, marked on the chart; the median year is 26.1 C (79.0 F).

Hottest day (TXx) at Rock Island 2 NW by year
Year	Hottest day (TXx)
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	26.1 C (79.0 F)
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	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 Rock Island 2 NW, 1904 to 1962. The record is -6.7 C (19.9 F) in 1915, marked on the chart; the median year is -6.7 C (19.9 F).

Coldest night (TNn) at Rock Island 2 NW by year
Year	Coldest night (TNn)
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	-6.7 C (19.9 F)
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	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 Rock Island 2 NW, 1904 to 1962. The record is 156.7 mm (6.2 in) in 1961, marked on the chart; the median year is 71.8 mm (2.8 in).

Wettest day (Rx1day) at Rock Island 2 NW by year
Year	Wettest day (Rx1day)
1904	41.7 mm (1.6 in)
1905	65.5 mm (2.6 in)
1906	78.2 mm (3.1 in)
1907	154.9 mm (6.1 in)
1908	38.6 mm (1.5 in)
1909	71.1 mm (2.8 in)
1910	50.8 mm (2.0 in)
1911	93.0 mm (3.7 in)
1912	92.7 mm (3.6 in)
1913	127.0 mm (5.0 in)
1914	52.3 mm (2.1 in)
1915	86.4 mm (3.4 in)
1916	78.7 mm (3.1 in)
1917	71.1 mm (2.8 in)
1918	57.2 mm (2.3 in)
1919	50.8 mm (2.0 in)
1920	51.3 mm (2.0 in)
1921	50.8 mm (2.0 in)
1922	78.7 mm (3.1 in)
1923	50.8 mm (2.0 in)
1924	50.8 mm (2.0 in)
1925	57.2 mm (2.3 in)
1926	75.7 mm (3.0 in)
1927	92.2 mm (3.6 in)
1928	71.1 mm (2.8 in)
1929	154.9 mm (6.1 in)
1930	78.7 mm (3.1 in)
1931	58.7 mm (2.3 in)
1932	89.4 mm (3.5 in)
1933	58.2 mm (2.3 in)
1934	97.8 mm (3.9 in)
1935	61.0 mm (2.4 in)
1936	130.6 mm (5.1 in)
1937	76.5 mm (3.0 in)
1938	74.9 mm (2.9 in)
1939	50.8 mm (2.0 in)
1940	84.3 mm (3.3 in)
1948	58.7 mm (2.3 in)
1949	104.1 mm (4.1 in)
1950	50.8 mm (2.0 in)
1951	93.2 mm (3.7 in)
1952	68.6 mm (2.7 in)
1953	72.4 mm (2.9 in)
1954	95.8 mm (3.8 in)
1955	70.6 mm (2.8 in)
1956	95.8 mm (3.8 in)
1957	66.3 mm (2.6 in)
1958	74.9 mm (2.9 in)
1959	74.7 mm (2.9 in)
1960	48.5 mm (1.9 in)
1961	156.7 mm (6.2 in)
1962	63.0 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rock Island 2 NW, 1904 to 1962. The record is 266.4 mm (10.5 in) in 1929, marked on the chart; the median year is 112.3 mm (4.4 in).

Wettest five days (Rx5day) at Rock Island 2 NW by year
Year	Wettest five days (Rx5day)
1904	93.1 mm (3.7 in)
1905	103.6 mm (4.1 in)
1906	97.3 mm (3.8 in)
1907	177.8 mm (7.0 in)
1908	72.9 mm (2.9 in)
1909	96.8 mm (3.8 in)
1910	78.0 mm (3.1 in)
1911	122.9 mm (4.8 in)
1912	138.9 mm (5.5 in)
1913	157.7 mm (6.2 in)
1914	91.6 mm (3.6 in)
1915	116.3 mm (4.6 in)
1916	91.4 mm (3.6 in)
1917	71.1 mm (2.8 in)
1918	108.5 mm (4.3 in)
1919	92.7 mm (3.6 in)
1920	70.6 mm (2.8 in)
1921	95.2 mm (3.7 in)
1922	108.6 mm (4.3 in)
1923	91.4 mm (3.6 in)
1924	126.0 mm (5.0 in)
1925	143.0 mm (5.6 in)
1926	27.9 mm (1.1 in)
1927	113.6 mm (4.5 in)
1928	104.8 mm (4.1 in)
1929	266.4 mm (10.5 in)
1930	82.5 mm (3.2 in)
1931	79.1 mm (3.1 in)
1932	111.0 mm (4.4 in)
1933	105.9 mm (4.2 in)
1934	120.7 mm (4.8 in)
1935	145.6 mm (5.7 in)
1936	159.8 mm (6.3 in)
1937	120.0 mm (4.7 in)
1938	115.0 mm (4.5 in)
1939	116.9 mm (4.6 in)
1940	97.0 mm (3.8 in)
1948	105.6 mm (4.2 in)
1949	184.0 mm (7.2 in)
1950	170.0 mm (6.7 in)
1951	143.3 mm (5.6 in)
1952	142.7 mm (5.6 in)
1953	101.5 mm (4.0 in)
1954	144.0 mm (5.7 in)
1955	146.9 mm (5.8 in)
1956	166.4 mm (6.6 in)
1957	184.9 mm (7.3 in)
1958	113.5 mm (4.5 in)
1959	97.3 mm (3.8 in)
1960	64.3 mm (2.5 in)
1961	161.0 mm (6.3 in)
1962	141.8 mm (5.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rock Island 2 NW, 1904 to 1962. The record is 31 days in 1953, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Rock Island 2 NW by year
Year	Longest dry spell (CDD)
1904	22 days
1905	15 days
1906	20 days
1907	18 days
1908	24 days
1909	25 days
1910	13 days
1911	21 days
1912	18 days
1913	28 days
1914	21 days
1915	22 days
1916	20 days
1917	14 days
1918	30 days
1919	20 days
1920	24 days
1921	13 days
1922	14 days
1923	19 days
1924	21 days
1925	29 days
1926	9 days
1927	25 days
1928	17 days
1929	25 days
1930	24 days
1931	20 days
1932	14 days
1933	15 days
1934	18 days
1935	25 days
1936	19 days
1937	11 days
1938	20 days
1939	14 days
1940	14 days
1948	19 days
1949	18 days
1950	16 days
1951	13 days
1952	30 days
1953	31 days
1954	13 days
1955	17 days
1956	18 days
1957	24 days
1958	19 days
1959	25 days
1960	16 days
1961	16 days
1962	8 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

40 years, 1905 to 1961

A day with at least 75.5 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 187.3 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Rock Island 2 NW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	75.5 mm (3.0 in)
5 years	100.9 mm (4.0 in)
10 years	119.4 mm (4.7 in)
25 years	144.9 mm (5.7 in)
50 years	165.4 mm (6.5 in)	Longer than the 40 years of record
100 years	187.3 mm (7.4 in)	Longer than the 40 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, 40 years of values from 1905 to 1961.

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: 156.7 mm (6.2 in) in 1961; 154.9 mm (6.1 in) in 1907; 154.9 mm (6.1 in) in 1929.

Download the Data

Data for Rock Island 2 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rock Island 2 NW 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).