Rugby Weather Records (USC00407979)

Record envelope, standing records and threshold days for Rugby (USC00407979), Tennessee, United States, with 60 years of record.

Key Facts for Rugby

Rugby (USC00407979) is a weather station in Tennessee, United States at 36.37 latitude and -84.70 longitude, 436 m (1,430 ft) above sea level.
The station reports from 1890 to 1949, 60 years of record.
1,464 records set at Rugby still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Rugby set a daily record low minimum temperature of 1.1 C (34.0 F) on 27 May 1949.

About the Station

Location: Tennessee, United States, 36.37 latitude, -84.70 longitude.
Elevation: 436 m (1,430 ft).
Period of record: 1890 to 1949, 60 years.
Eligible elements: tmax, tmin, 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 Rugby. 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 Rugby, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.9 C (75.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Feb	25.6 C (78.1 F)	-28.3 C (-18.9 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-20.0 C (-4.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-9.4 C (15.1 F)	n/a	n/a
May	36.7 C (98.1 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	40.0 C (104.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	5.0 C (41.0 F)	n/a	n/a
Aug	39.4 C (102.9 F)	2.2 C (36.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-9.4 C (15.1 F)	n/a	n/a
Nov	28.3 C (82.9 F)	-16.7 C (1.9 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-27.8 C (-18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rugby still stand. 1925 holds the most, with 48.

Standing records at Rugby by the year they were set
Year set	Standing records
1891	13
1896	2
1897	25
1898	32
1899	46
1900	32
1901	43
1902	32
1903	37
1904	22
1905	25
1906	23
1907	45
1908	25
1909	28
1910	31
1911	35
1912	26
1913	31
1914	39
1915	33
1916	26
1917	36
1918	27
1919	31
1920	23
1921	18
1922	13
1923	23
1924	23
1925	48
1926	24
1927	33
1928	25
1929	21
1930	33
1931	26
1932	22
1933	20
1934	17
1935	26
1936	39
1937	27
1938	20
1939	12
1940	38
1941	29
1942	20
1943	31
1944	25
1945	17
1946	15
1947	18
1948	21
1949	12

All-Time Record Progression

6 new records

6 all-time records were set at Rugby between 29 June 1928 and 26 January 1940. Each dot is a new record.

When Rugby set new all-time records
Date	Kind	Detail
1928-06-29	Record daily precipitation	Record daily precipitation 171.5 mm (6.8 in)
1930-06-24	Record high minimum temperature	Record high minimum temperature 26.1 C (79.0 F)
1930-07-12	Record high maximum temperature	Record high maximum temperature 38.9 C (102.0 F)
1930-07-28	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)
1936-06-29	Record high maximum temperature	Record high maximum temperature 40.0 C (104.0 F)
1940-01-26	Record low minimum temperature	Record low minimum temperature -28.9 C (-20.0 F)

Wettest Day of Each Month

Jun: 171.5 mm (6.8 in)

The wettest day on record for each calendar month at Rugby. The most was 171.5 mm (6.8 in) on 29 June 1928.

Record daily precipitation for each month at Rugby
Month	Record daily precipitation (mm)	Date
Jan	92.2 mm (3.6 in)	5 January 1949
Feb	111.8 mm (4.4 in)	3 February 1939
Mar	139.7 mm (5.5 in)	28 March 1902
Apr	94.0 mm (3.7 in)	4 April 1911
May	63.5 mm (2.5 in)	5 May 1895
Jun	171.5 mm (6.8 in)	29 June 1928
Jul	114.3 mm (4.5 in)	17 July 1906
Aug	92.7 mm (3.6 in)	1 August 1916
Sep	125.7 mm (4.9 in)	29 September 1944
Oct	96.5 mm (3.8 in)	16 October 1932
Nov	101.6 mm (4.0 in)	16 November 1927
Dec	89.9 mm (3.5 in)	6 December 1936

Period of Record Coverage

1890 to 1949

56 years of record at Rugby, 1890 to 1949. 11 years have data for under 90 percent of days and are left out of rankings: 1890, 1891, 1896, 1911, 1912, 1915, 1933, 1935 and others.

Days with data per year at Rugby
Year	Days with data	Share of year	Complete
1890	2	1%	No
1891	30	8%	No
1896	35	10%	No
1897	333	91%	Yes
1898	363	99%	Yes
1899	363	99%	Yes
1900	364	100%	Yes
1901	339	93%	Yes
1902	332	91%	Yes
1903	362	99%	Yes
1904	366	100%	Yes
1905	364	100%	Yes
1906	348	95%	Yes
1907	358	98%	Yes
1908	337	92%	Yes
1909	363	99%	Yes
1910	338	93%	Yes
1911	321	88%	No
1912	324	89%	No
1913	362	99%	Yes
1914	360	99%	Yes
1915	318	87%	No
1916	366	100%	Yes
1917	350	96%	Yes
1918	351	96%	Yes
1919	357	98%	Yes
1920	363	99%	Yes
1921	362	99%	Yes
1922	364	100%	Yes
1923	361	99%	Yes
1924	356	97%	Yes
1925	343	94%	Yes
1926	331	91%	Yes
1927	345	95%	Yes
1928	355	97%	Yes
1929	359	98%	Yes
1930	339	93%	Yes
1931	349	96%	Yes
1932	343	94%	Yes
1933	325	89%	No
1934	341	93%	Yes
1935	319	87%	No
1936	263	72%	No
1937	351	96%	Yes
1938	358	98%	Yes
1939	363	99%	Yes
1940	364	99%	Yes
1941	364	100%	Yes
1942	352	96%	Yes
1943	358	98%	Yes
1944	329	90%	No
1945	357	98%	Yes
1946	348	95%	Yes
1947	355	97%	Yes
1948	340	93%	Yes
1949	143	39%	No

Latest Records

Latest records at Rugby
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1949	Rugby, US	daily low min	1.1 C (34.0 F)	0.6 C (1.1 F)	24 years	14 of 100 (Routine)
27 April 1949	Rugby, US	daily high min	14.4 C (57.9 F)	0.5 C (0.9 F)	14 years	10 of 100 (Routine)
17 April 1949	Rugby, US	daily low min (Tie)	-6.1 C (21.0 F)	tie	44 years	4 of 100 (Routine)
26 March 1949	Rugby, US	daily high min	15.0 C (59.0 F)	0.6 C (1.1 F)	28 years	14 of 100 (Routine)
25 February 1949	Rugby, US	daily high min (Tie)	9.4 C (48.9 F)	tie	13 years	2 of 100 (Routine)
14 February 1949	Rugby, US	daily high max	24.4 C (75.9 F)	1.6 C (2.9 F)	31 years	17 of 100 (Routine)
14 February 1949	Rugby, US	monthly high min (Tie)	15.0 C (59.0 F)	tie	27 years	6 of 100 (Routine)
9 February 1949	Rugby, US	daily high min (Tie)	9.4 C (48.9 F)	tie	31 years	3 of 100 (Routine)
26 January 1949	Rugby, US	daily high min	12.2 C (54.0 F)	2.2 C (4.0 F)	5 years	10 of 100 (Routine)
25 January 1949	Rugby, US	daily high min	12.8 C (55.0 F)	3.9 C (7.0 F)	40 years	23 of 100 (Routine)
24 January 1949	Rugby, US	daily high min	13.3 C (55.9 F)	0.5 C (0.9 F)	40 years	18 of 100 (Routine)
24 January 1949	Rugby, US	daily high max	21.1 C (70.0 F)	1.1 C (2.0 F)	7 years	9 of 100 (Routine)
18 January 1949	Rugby, US	daily high max (Tie)	21.1 C (70.0 F)	tie	6 years	1 of 100 (Routine)
11 January 1949	Rugby, US	daily high max	21.1 C (70.0 F)	2.2 C (4.0 F)	33 years	18 of 100 (Routine)
10 January 1949	Rugby, US	monthly high max	23.9 C (75.0 F)	1.1 C (2.0 F)	39 years	28 of 100 (Routine)
9 January 1949	Rugby, US	daily high max	22.2 C (72.0 F)	1.1 C (2.0 F)	47 years	21 of 100 (Routine)
5 January 1949	Rugby, US	monthly rain	92.2 mm (3.6 in)	0.8 mm (0.03 in)	2 years	16 of 100 (Routine)
16 December 1948	Rugby, US	daily rain	26.9 mm (1.1 in)	2.8 mm (0.11 in)	42 years	18 of 100 (Routine)
16 December 1948	Rugby, US	daily high min	12.8 C (55.0 F)	0.6 C (1.1 F)	15 years	9 of 100 (Routine)
15 December 1948	Rugby, US	monthly high min (Tie)	15.6 C (60.1 F)	tie	17 years	5 of 100 (Routine)

Climate Trend

35 complete years, 1898 to 1948

One stripe for each of 35 complete years at Rugby, 1898 to 1948. Blue stripes are years cooler than the station's own mean of 13.1 C (55.5 F); red stripes are warmer. The coolest year was 1940, at 11.7 C (53.1 F), and the warmest was 1931, at 14.0 C (57.2 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Rugby as warming stripes, 1898 to 1948
Year	Annual mean temperature	Difference from the station mean
1898	12.9 C	-0.17 C
1899	12.7 C	-0.40 C
1900	13.4 C	+0.34 C
1903	12.3 C	-0.82 C
1904	12.1 C	-0.98 C
1905	12.7 C	-0.35 C
1906	13.1 C	-0.01 C
1907	12.8 C	-0.28 C
1909	13.0 C	-0.07 C
1910	12.3 C	-0.78 C
1913	13.9 C	+0.79 C
1914	13.1 C	+0.01 C
1916	13.3 C	+0.18 C
1918	13.3 C	+0.22 C
1919	13.8 C	+0.71 C
1920	12.8 C	-0.29 C
1922	13.7 C	+0.58 C
1923	13.2 C	+0.15 C
1924	12.2 C	-0.91 C
1927	13.6 C	+0.54 C
1928	12.2 C	-0.92 C
1929	12.6 C	-0.48 C
1931	14.0 C	+0.91 C
1932	13.3 C	+0.21 C
1934	12.9 C	-0.20 C
1937	13.0 C	-0.11 C
1938	13.7 C	+0.64 C
1939	13.3 C	+0.23 C
1940	11.7 C	-1.36 C
1941	13.6 C	+0.54 C
1942	13.4 C	+0.33 C
1943	13.1 C	+0.02 C
1945	13.4 C	+0.36 C
1946	13.9 C	+0.80 C
1948	13.7 C	+0.67 C

The fitted trend in annual mean temperature here over 1898 to 1948 is 0.12 C (0.00 to 0.25) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.22 F (-0.01 to 0.45) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rugby
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.12 C (0.00 to 0.25) per decade	0.22 F (-0.01 to 0.45) per decade	1898 to 1948	35	Not clearly different from zero
Mean daily maximum	0.15 C (-0.02 to 0.32) per decade	0.27 F (-0.03 to 0.58) per decade	1898 to 1948	35	Not clearly different from zero
Mean daily minimum	0.1 C (-0.1 to 0.3) per decade	0.2 F (-0.1 to 0.5) per decade	1898 to 1948	35	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1890 to 1949

Yearly extremes at Rugby: 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)	1936	35.9 C (96.5 F)	56
Coldest night (TNn)	-28.9 C (-20.0 F)	1940	-20.0 C (-4.0 F)	55
Wettest day (Rx1day)	171.5 mm (6.8 in)	1928	72.6 mm (2.9 in)	59
Wettest five days (Rx5day)	186.3 mm (7.3 in)	1901	118.1 mm (4.6 in)	59
Longest dry spell (CDD)	44 days	1935	19 days	59

Hottest day (TXx)

The hottest day of the year at Rugby, 1890 to 1949. The record is 40.0 C (104.0 F) in 1936, marked on the chart; the median year is 35.9 C (96.5 F).

Hottest day (TXx) at Rugby by year
Year	Hottest day (TXx)
1890	28.9 C (84.0 F)
1891	17.2 C (63.0 F)
1893	n/a
1894	n/a
1895	n/a
1896	35.6 C (96.1 F)
1897	34.4 C (93.9 F)
1898	35.0 C (95.0 F)
1899	35.6 C (96.1 F)
1900	35.6 C (96.1 F)
1901	37.2 C (99.0 F)
1902	36.1 C (97.0 F)
1903	35.6 C (96.1 F)
1904	37.2 C (99.0 F)
1905	36.1 C (97.0 F)
1906	34.4 C (93.9 F)
1907	36.7 C (98.1 F)
1908	34.4 C (93.9 F)
1909	34.4 C (93.9 F)
1910	33.3 C (91.9 F)
1911	37.2 C (99.0 F)
1912	35.6 C (96.1 F)
1913	37.8 C (100.0 F)
1914	37.2 C (99.0 F)
1915	35.6 C (96.1 F)
1916	34.4 C (93.9 F)
1917	33.3 C (91.9 F)
1918	36.1 C (97.0 F)
1919	36.7 C (98.1 F)
1920	32.2 C (90.0 F)
1921	35.0 C (95.0 F)
1922	32.8 C (91.0 F)
1923	33.9 C (93.0 F)
1924	36.7 C (98.1 F)
1925	38.3 C (100.9 F)
1926	37.8 C (100.0 F)
1927	36.7 C (98.1 F)
1928	33.3 C (91.9 F)
1929	33.9 C (93.0 F)
1930	39.4 C (102.9 F)
1931	37.2 C (99.0 F)
1932	36.7 C (98.1 F)
1933	36.7 C (98.1 F)
1934	36.7 C (98.1 F)
1935	36.1 C (97.0 F)
1936	40.0 C (104.0 F)
1937	34.4 C (93.9 F)
1938	35.0 C (95.0 F)
1939	36.1 C (97.0 F)
1940	34.4 C (93.9 F)
1941	36.7 C (98.1 F)
1942	37.2 C (99.0 F)
1943	39.4 C (102.9 F)
1944	36.7 C (98.1 F)
1945	34.4 C (93.9 F)
1946	36.1 C (97.0 F)
1947	36.1 C (97.0 F)
1948	35.6 C (96.1 F)
1949	31.7 C (89.1 F)

Coldest night (TNn)

The coldest night of the year at Rugby, 1890 to 1949. The record is -28.9 C (-20.0 F) in 1940, marked on the chart; the median year is -20.0 C (-4.0 F).

Coldest night (TNn) at Rugby by year
Year	Coldest night (TNn)
1890	3.3 C (37.9 F)
1891	n/a
1893	n/a
1894	n/a
1895	n/a
1896	-14.4 C (6.1 F)
1897	-27.2 C (-17.0 F)
1898	-21.1 C (-6.0 F)
1899	-28.3 C (-18.9 F)
1900	-22.8 C (-9.0 F)
1901	-27.8 C (-18.0 F)
1902	-17.2 C (1.0 F)
1903	-23.9 C (-11.0 F)
1904	-16.1 C (3.0 F)
1905	-27.2 C (-17.0 F)
1906	-20.0 C (-4.0 F)
1907	-15.6 C (3.9 F)
1908	-16.7 C (1.9 F)
1909	-20.6 C (-5.1 F)
1910	-17.2 C (1.0 F)
1911	-11.1 C (12.0 F)
1912	-22.2 C (-8.0 F)
1913	-14.4 C (6.1 F)
1914	-25.0 C (-13.0 F)
1915	-11.1 C (12.0 F)
1916	-24.4 C (-11.9 F)
1917	-22.2 C (-8.0 F)
1918	-23.3 C (-9.9 F)
1919	-17.8 C (0.0 F)
1920	-18.9 C (-2.0 F)
1921	-8.9 C (16.0 F)
1922	-15.0 C (5.0 F)
1923	-16.7 C (1.9 F)
1924	-25.0 C (-13.0 F)
1925	-20.6 C (-5.1 F)
1926	-16.1 C (3.0 F)
1927	-18.3 C (-0.9 F)
1928	-23.3 C (-9.9 F)
1929	-20.6 C (-5.1 F)
1930	-17.2 C (1.0 F)
1931	-14.4 C (6.1 F)
1932	-19.4 C (-2.9 F)
1933	-24.4 C (-11.9 F)
1934	-20.0 C (-4.0 F)
1935	-23.9 C (-11.0 F)
1936	-24.4 C (-11.9 F)
1937	-20.6 C (-5.1 F)
1938	-20.0 C (-4.0 F)
1939	-15.0 C (5.0 F)
1940	-28.9 C (-20.0 F)
1941	-13.3 C (8.1 F)
1942	-21.7 C (-7.1 F)
1943	-20.0 C (-4.0 F)
1944	-16.7 C (1.9 F)
1945	-17.8 C (0.0 F)
1946	-17.2 C (1.0 F)
1947	-18.3 C (-0.9 F)
1948	-23.3 C (-9.9 F)
1949	-11.7 C (10.9 F)

Wettest day (Rx1day)

The wettest day of the year at Rugby, 1890 to 1949. The record is 171.5 mm (6.8 in) in 1928, marked on the chart; the median year is 72.6 mm (2.9 in).

Wettest day (Rx1day) at Rugby by year
Year	Wettest day (Rx1day)
1890	42.4 mm (1.7 in)
1891	48.3 mm (1.9 in)
1893	65.3 mm (2.6 in)
1894	75.7 mm (3.0 in)
1895	63.5 mm (2.5 in)
1896	67.3 mm (2.6 in)
1897	84.6 mm (3.3 in)
1898	58.4 mm (2.3 in)
1899	61.0 mm (2.4 in)
1900	75.4 mm (3.0 in)
1901	90.2 mm (3.6 in)
1902	139.7 mm (5.5 in)
1903	54.6 mm (2.1 in)
1904	45.7 mm (1.8 in)
1905	68.3 mm (2.7 in)
1906	114.3 mm (4.5 in)
1907	75.9 mm (3.0 in)
1908	50.8 mm (2.0 in)
1909	54.6 mm (2.1 in)
1910	68.6 mm (2.7 in)
1911	94.0 mm (3.7 in)
1912	62.7 mm (2.5 in)
1913	54.6 mm (2.1 in)
1914	86.4 mm (3.4 in)
1915	90.2 mm (3.6 in)
1916	92.7 mm (3.6 in)
1917	57.2 mm (2.3 in)
1918	66.0 mm (2.6 in)
1919	63.5 mm (2.5 in)
1920	73.7 mm (2.9 in)
1921	77.5 mm (3.1 in)
1922	76.2 mm (3.0 in)
1923	61.0 mm (2.4 in)
1924	78.7 mm (3.1 in)
1925	57.2 mm (2.3 in)
1926	85.1 mm (3.4 in)
1927	101.6 mm (4.0 in)
1928	171.5 mm (6.8 in)
1929	101.6 mm (4.0 in)
1930	45.7 mm (1.8 in)
1931	47.0 mm (1.9 in)
1932	96.5 mm (3.8 in)
1933	50.8 mm (2.0 in)
1934	74.9 mm (2.9 in)
1935	55.9 mm (2.2 in)
1936	89.9 mm (3.5 in)
1937	83.8 mm (3.3 in)
1938	72.6 mm (2.9 in)
1939	111.8 mm (4.4 in)
1940	52.1 mm (2.1 in)
1941	104.1 mm (4.1 in)
1942	59.7 mm (2.4 in)
1943	45.7 mm (1.8 in)
1944	125.7 mm (4.9 in)
1945	63.5 mm (2.5 in)
1946	91.4 mm (3.6 in)
1947	35.8 mm (1.4 in)
1948	97.3 mm (3.8 in)
1949	92.2 mm (3.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rugby, 1890 to 1949. The record is 186.3 mm (7.3 in) in 1901, marked on the chart; the median year is 118.1 mm (4.6 in).

Wettest five days (Rx5day) at Rugby by year
Year	Wettest five days (Rx5day)
1890	56.4 mm (2.2 in)
1891	51.8 mm (2.0 in)
1893	103.4 mm (4.1 in)
1894	141.5 mm (5.6 in)
1895	144.6 mm (5.7 in)
1896	109.5 mm (4.3 in)
1897	118.1 mm (4.6 in)
1898	101.3 mm (4.0 in)
1899	134.4 mm (5.3 in)
1900	143.6 mm (5.7 in)
1901	186.3 mm (7.3 in)
1902	149.9 mm (5.9 in)
1903	102.7 mm (4.0 in)
1904	93.0 mm (3.7 in)
1905	110.8 mm (4.4 in)
1906	179.8 mm (7.1 in)
1907	102.0 mm (4.0 in)
1908	82.7 mm (3.3 in)
1909	87.9 mm (3.5 in)
1910	111.8 mm (4.4 in)
1911	145.3 mm (5.7 in)
1912	108.5 mm (4.3 in)
1913	102.8 mm (4.0 in)
1914	138.8 mm (5.5 in)
1915	126.7 mm (5.0 in)
1916	156.4 mm (6.2 in)
1917	134.7 mm (5.3 in)
1918	144.8 mm (5.7 in)
1919	172.8 mm (6.8 in)
1920	117.9 mm (4.6 in)
1921	91.5 mm (3.6 in)
1922	155.0 mm (6.1 in)
1923	88.8 mm (3.5 in)
1924	103.8 mm (4.1 in)
1925	120.7 mm (4.8 in)
1926	96.5 mm (3.8 in)
1927	177.8 mm (7.0 in)
1928	179.1 mm (7.1 in)
1929	182.9 mm (7.2 in)
1930	64.8 mm (2.6 in)
1931	77.7 mm (3.1 in)
1932	115.0 mm (4.5 in)
1933	88.6 mm (3.5 in)
1934	81.3 mm (3.2 in)
1935	105.2 mm (4.1 in)
1936	99.0 mm (3.9 in)
1937	121.7 mm (4.8 in)
1938	82.3 mm (3.2 in)
1939	156.2 mm (6.1 in)
1940	96.8 mm (3.8 in)
1941	173.4 mm (6.8 in)
1942	132.7 mm (5.2 in)
1943	129.9 mm (5.1 in)
1944	146.3 mm (5.8 in)
1945	133.0 mm (5.2 in)
1946	148.6 mm (5.9 in)
1947	84.7 mm (3.3 in)
1948	162.5 mm (6.4 in)
1949	121.9 mm (4.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rugby, 1890 to 1949. The record is 44 days in 1935, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Rugby by year
Year	Longest dry spell (CDD)
1890	5 days
1891	30 days
1893	16 days
1894	26 days
1895	20 days
1896	28 days
1897	22 days
1898	21 days
1899	37 days
1900	17 days
1901	22 days
1902	17 days
1903	18 days
1904	14 days
1905	15 days
1906	20 days
1907	19 days
1908	22 days
1909	21 days
1910	17 days
1911	13 days
1912	19 days
1913	14 days
1914	20 days
1915	13 days
1916	18 days
1917	18 days
1918	17 days
1919	20 days
1920	26 days
1921	18 days
1922	15 days
1923	20 days
1924	27 days
1925	17 days
1926	19 days
1927	26 days
1928	24 days
1929	23 days
1930	24 days
1931	20 days
1932	13 days
1933	14 days
1934	12 days
1935	44 days
1936	20 days
1937	16 days
1938	20 days
1939	18 days
1940	14 days
1941	21 days
1942	18 days
1943	22 days
1944	19 days
1945	19 days
1946	14 days
1947	20 days
1948	26 days
1949	12 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.

Frost Dates and Growing Season

35 years with a frost

Across 35 years with a frost, the median last spring frost at Rugby falls on 3 May and the median first autumn frost on 10 October, which leaves a median of 158 days between them.

Fitted over all years, the growing season changes by -1.4 days per decade at this station.

Frost dates and growing season at Rugby
Measure	Median, all years	Earliest period	Recent period (1905 to 1948)	Recent against earliest	Fitted trend
Last spring frost	3 May	n/a	3 May	n/a	0.0 days per decade
First autumn frost	10 October	n/a	10 October	n/a	-1.4 days per decade
Growing days	158 days	n/a	158 days	n/a	-1.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

48 years, 1893 to 1948

A day with at least 72.0 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 153.5 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Rugby: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	72.0 mm (2.8 in)
5 years	93.2 mm (3.7 in)
10 years	107.5 mm (4.2 in)
25 years	125.8 mm (5.0 in)
50 years	139.6 mm (5.5 in)	Longer than the 48 years of record
100 years	153.5 mm (6.0 in)	Longer than the 48 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, 48 years of values from 1893 to 1948.

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: 171.5 mm (6.8 in) in 1928; 125.7 mm (4.9 in) in 1944; 114.3 mm (4.5 in) in 1906.

Download the Data

Data for Rugby standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rugby 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 2026-10-17 (17 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).