Groveton Weather Records (USC00413778)

Record envelope, standing records and threshold days for Groveton (USC00413778), Texas, United States, with 82 years of record.

Key Facts for Groveton

Groveton (USC00413778) is a weather station in Texas, United States at 31.20 latitude and -95.15 longitude, 107 m (350 ft) above sea level.
The station reports from 1923 to 2004, 82 years of record.
1,464 records set at Groveton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Groveton set a daily record low maximum temperature of 25.0 C (77.0 F) on 25 June 2004.

About the Station

Location: Texas, United States, 31.20 latitude, -95.15 longitude.
Elevation: 107 m (350 ft).
Period of record: 1923 to 2004, 82 years.
Eligible elements: tmax, tmin, 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 Groveton. 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 Groveton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.3 C (82.9 F)	-14.4 C (6.1 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-10.0 C (14.0 F)	n/a	n/a
Mar	32.2 C (90.0 F)	-7.8 C (18.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
May	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Jun	39.4 C (102.9 F)	9.4 C (48.9 F)	n/a	n/a
Jul	41.1 C (106.0 F)	13.3 C (55.9 F)	n/a	n/a
Aug	43.3 C (109.9 F)	12.8 C (55.0 F)	n/a	n/a
Sep	43.9 C (111.0 F)	4.4 C (39.9 F)	n/a	n/a
Oct	37.2 C (99.0 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-8.9 C (16.0 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Groveton still stand. 1996 holds the most, with 89.

Standing records at Groveton by the year they were set
Year set	Standing records
1930	39
1931	11
1966	31
1967	22
1968	36
1969	56
1970	56
1971	58
1972	42
1973	40
1974	63
1975	32
1976	52
1977	31
1978	39
1979	35
1980	24
1981	25
1982	37
1983	39
1984	34
1985	35
1986	29
1987	20
1988	21
1989	58
1990	50
1991	28
1992	34
1993	41
1994	32
1995	35
1996	89
1997	40
1998	54
1999	19
2000	36
2001	27
2002	8
2004	6

All-Time Record Progression

3 new records

3 all-time records were set at Groveton between 17 October 1994 and 4 September 2000. Each dot is a new record.

When Groveton set new all-time records
Date	Kind	Detail
1994-10-17	Record daily precipitation	Record daily precipitation 307.3 mm (12.1 in)
2000-08-31	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
2000-09-04	Record high maximum temperature	Record high maximum temperature 43.9 C (111.0 F)

Wettest Day of Each Month

Oct: 307.3 mm (12.1 in)

The wettest day on record for each calendar month at Groveton. The most was 307.3 mm (12.1 in) on 17 October 1994.

Record daily precipitation for each month at Groveton
Month	Record daily precipitation (mm)	Date
Jan	119.4 mm (4.7 in)	6 January 1998
Feb	82.0 mm (3.2 in)	4 February 1955
Mar	149.9 mm (5.9 in)	29 March 1990
Apr	134.6 mm (5.3 in)	13 April 1927
May	152.4 mm (6.0 in)	27 May 1929
Jun	127.0 mm (5.0 in)	1 June 1990
Jul	128.5 mm (5.1 in)	25 July 1959
Aug	148.3 mm (5.8 in)	10 August 1957
Sep	171.5 mm (6.8 in)	20 September 1958
Oct	307.3 mm (12.1 in)	17 October 1994
Nov	174.2 mm (6.9 in)	13 November 1998
Dec	111.8 mm (4.4 in)	12 December 2001

Period of Record Coverage

1930 to 2004

40 years of record at Groveton, 1930 to 2004. 7 years have data for under 90 percent of days and are left out of rankings: 1930, 1931, 1966, 1967, 1971, 2002, 2004.

Days with data per year at Groveton
Year	Days with data	Share of year	Complete
1930	239	65%	No
1931	53	15%	No
1966	228	62%	No
1967	193	53%	No
1968	366	100%	Yes
1969	362	99%	Yes
1970	339	93%	Yes
1971	320	88%	No
1972	365	100%	Yes
1973	363	99%	Yes
1974	362	99%	Yes
1975	362	99%	Yes
1976	363	99%	Yes
1977	363	99%	Yes
1978	361	99%	Yes
1979	362	99%	Yes
1980	362	99%	Yes
1981	356	98%	Yes
1982	355	97%	Yes
1983	357	98%	Yes
1984	359	98%	Yes
1985	359	98%	Yes
1986	364	100%	Yes
1987	361	99%	Yes
1988	365	100%	Yes
1989	363	99%	Yes
1990	362	99%	Yes
1991	364	100%	Yes
1992	361	99%	Yes
1993	363	99%	Yes
1994	364	100%	Yes
1995	363	99%	Yes
1996	363	99%	Yes
1997	359	98%	Yes
1998	360	99%	Yes
1999	332	91%	Yes
2000	345	94%	Yes
2001	358	98%	Yes
2002	89	24%	No
2004	38	10%	No

Latest Records

Latest records at Groveton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 June 2004	Groveton, US	daily low max	25.0 C (77.0 F)	1.7 C (3.1 F)	5 years	14 of 100 (Routine)
24 June 2004	Groveton, US	daily low max	26.1 C (79.0 F)	2.2 C (4.0 F)	36 years	25 of 100 (Routine)
23 June 2004	Groveton, US	daily low max	25.0 C (77.0 F)	1.1 C (2.0 F)	36 years	21 of 100 (Routine)
15 June 2004	Groveton, US	daily low max	27.2 C (81.0 F)	1.1 C (2.0 F)	27 years	19 of 100 (Routine)
14 May 2004	Groveton, US	daily low max	23.3 C (73.9 F)	1.1 C (2.0 F)	31 years	19 of 100 (Routine)
3 May 2004	Groveton, US	daily low min	7.8 C (46.0 F)	1.6 C (2.9 F)	31 years	20 of 100 (Routine)
26 March 2002	Groveton, US	daily rain	47.0 mm (1.9 in)	25.4 mm (1.0 in)	19 years	27 of 100 (Routine)
19 March 2002	Groveton, US	daily rain	44.5 mm (1.8 in)	8.2 mm (0.32 in)	16 years	17 of 100 (Routine)
4 March 2002	Groveton, US	monthly low min (Tie)	-7.8 C (18.0 F)	tie	22 years	5 of 100 (Routine)
3 March 2002	Groveton, US	daily low max	6.1 C (43.0 F)	1.1 C (2.0 F)	7 years	11 of 100 (Routine)
2 March 2002	Groveton, US	daily low max	1.7 C (35.1 F)	4.4 C (7.9 F)	21 years	22 of 100 (Routine)
28 February 2002	Groveton, US	daily low min	-5.0 C (23.0 F)	2.8 C (5.0 F)	24 years	18 of 100 (Routine)
27 February 2002	Groveton, US	daily low min	-7.8 C (18.0 F)	7.2 C (13.0 F)	24 years	26 of 100 (Routine)
27 February 2002	Groveton, US	daily low max	6.7 C (44.1 F)	5.0 C (9.0 F)	20 years	21 of 100 (Routine)
30 January 2002	Groveton, US	daily high min	18.3 C (64.9 F)	1.6 C (2.9 F)	31 years	18 of 100 (Routine)
23 January 2002	Groveton, US	daily high min	18.9 C (66.0 F)	2.2 C (4.0 F)	35 years	20 of 100 (Routine)
10 January 2002	Groveton, US	daily high min (Tie)	13.9 C (57.0 F)	tie	30 years	4 of 100 (Routine)
5 January 2002	Groveton, US	daily rain	36.8 mm (1.4 in)	12.7 mm (0.5 in)	42 years	27 of 100 (Routine)
4 January 2002	Groveton, US	daily low min (Tie)	-7.8 C (18.0 F)	tie	3 years	1 of 100 (Routine)
12 December 2001	Groveton, US	monthly rain	111.8 mm (4.4 in)	2.1 mm (0.08 in)	77 years	41 of 100 (Notable)

Climate Trend

31 complete years, 1968 to 2001

One stripe for each of 31 complete years at Groveton, 1968 to 2001. Blue stripes are years cooler than the station's own mean of 19.3 C (66.7 F); red stripes are warmer. The coolest year was 1983, at 17.7 C (63.9 F), and the warmest was 1990, at 20.7 C (69.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Groveton as warming stripes, 1968 to 2001
Year	Annual mean temperature	Difference from the station mean
1968	18.3 C	-1.00 C
1969	19.3 C	+0.06 C
1972	19.2 C	-0.10 C
1973	19.0 C	-0.30 C
1974	19.3 C	+0.02 C
1975	18.9 C	-0.39 C
1976	18.0 C	-1.26 C
1977	19.2 C	-0.09 C
1978	18.5 C	-0.79 C
1979	18.0 C	-1.23 C
1980	19.2 C	-0.11 C
1981	19.0 C	-0.29 C
1982	19.4 C	+0.12 C
1983	17.7 C	-1.54 C
1984	19.0 C	-0.22 C
1985	19.3 C	+0.00 C
1986	19.5 C	+0.22 C
1987	18.8 C	-0.48 C
1988	18.9 C	-0.39 C
1989	18.6 C	-0.64 C
1990	20.7 C	+1.39 C
1991	19.9 C	+0.63 C
1992	19.9 C	+0.59 C
1993	19.6 C	+0.35 C
1994	20.4 C	+1.17 C
1995	20.3 C	+1.06 C
1996	20.4 C	+1.18 C
1997	19.1 C	-0.17 C
1998	20.6 C	+1.31 C
2000	20.0 C	+0.72 C
2001	19.4 C	+0.17 C

The annual mean temperature here has risen by 0.5 C (0.2 to 0.7) per decade over 1968 to 2001. In Fahrenheit: 0.9 F (0.4 to 1.3) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Groveton
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.5 C (0.2 to 0.7) per decade	0.9 F (0.4 to 1.3) per decade	1968 to 2001	31	Rise
Mean daily maximum	0.6 C (0.3 to 0.9) per decade	1.1 F (0.5 to 1.7) per decade	1968 to 2001	31	Rise
Mean daily minimum	0.4 C (0.1 to 0.7) per decade	0.7 F (0.1 to 1.2) per decade	1968 to 2001	31	Rise

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

1923 to 2004

Yearly extremes at Groveton: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	2000	38.6 C (101.5 F)	40
Coldest night (TNn)	-17.2 C (1.0 F)	1989	-7.8 C (18.0 F)	40
Wettest day (Rx1day)	307.3 mm (12.1 in)	1994	93.1 mm (3.7 in)	66
Wettest five days (Rx5day)	427.5 mm (16.8 in)	1994	135.8 mm (5.3 in)	64
Longest dry spell (CDD)	53 days	1924	24 days	64

Hottest day (TXx)

The hottest day of the year at Groveton, 1923 to 2004. The record is 43.9 C (111.0 F) in 2000, marked on the chart; the median year is 38.6 C (101.5 F).

Hottest day (TXx) at Groveton by year
Year	Hottest day (TXx)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	41.1 C (106.0 F)
1931	37.8 C (100.0 F)
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	38.3 C (100.9 F)
1967	33.3 C (91.9 F)
1968	36.7 C (98.1 F)
1969	42.2 C (108.0 F)
1970	40.6 C (105.1 F)
1971	40.0 C (104.0 F)
1972	36.7 C (98.1 F)
1973	36.1 C (97.0 F)
1974	38.9 C (102.0 F)
1975	35.6 C (96.1 F)
1976	36.7 C (98.1 F)
1977	38.3 C (100.9 F)
1978	39.4 C (102.9 F)
1979	35.6 C (96.1 F)
1980	40.6 C (105.1 F)
1981	36.7 C (98.1 F)
1982	38.3 C (100.9 F)
1983	35.6 C (96.1 F)
1984	38.9 C (102.0 F)
1985	40.6 C (105.1 F)
1986	40.0 C (104.0 F)
1987	38.3 C (100.9 F)
1988	38.9 C (102.0 F)
1989	37.8 C (100.0 F)
1990	41.7 C (107.1 F)
1991	38.3 C (100.9 F)
1992	38.9 C (102.0 F)
1993	40.6 C (105.1 F)
1994	38.9 C (102.0 F)
1995	40.6 C (105.1 F)
1996	41.1 C (106.0 F)
1997	38.3 C (100.9 F)
1998	42.2 C (108.0 F)
1999	40.0 C (104.0 F)
2000	43.9 C (111.0 F)
2001	38.3 C (100.9 F)
2002	27.8 C (82.0 F)
2004	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Groveton, 1923 to 2004. The record is -17.2 C (1.0 F) in 1989, marked on the chart; the median year is -7.8 C (18.0 F).

Coldest night (TNn) at Groveton by year
Year	Coldest night (TNn)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	-2.8 C (27.0 F)
1931	1.7 C (35.1 F)
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	-6.7 C (19.9 F)
1967	-6.7 C (19.9 F)
1968	-6.1 C (21.0 F)
1969	-8.9 C (16.0 F)
1970	-10.0 C (14.0 F)
1971	-6.7 C (19.9 F)
1972	-8.3 C (17.1 F)
1973	-11.7 C (10.9 F)
1974	-5.0 C (23.0 F)
1975	-8.3 C (17.1 F)
1976	-11.1 C (12.0 F)
1977	-11.1 C (12.0 F)
1978	-9.4 C (15.1 F)
1979	-11.7 C (10.9 F)
1980	-7.8 C (18.0 F)
1981	-10.0 C (14.0 F)
1982	-14.4 C (6.1 F)
1983	-13.9 C (7.0 F)
1984	-8.9 C (16.0 F)
1985	-11.1 C (12.0 F)
1986	-5.6 C (21.9 F)
1987	-5.6 C (21.9 F)
1988	-8.3 C (17.1 F)
1989	-17.2 C (1.0 F)
1990	-11.1 C (12.0 F)
1991	-6.1 C (21.0 F)
1992	-7.2 C (19.0 F)
1993	-5.6 C (21.9 F)
1994	-6.1 C (21.0 F)
1995	-6.1 C (21.0 F)
1996	-10.0 C (14.0 F)
1997	-6.1 C (21.0 F)
1998	-5.0 C (23.0 F)
1999	-7.8 C (18.0 F)
2000	-6.1 C (21.0 F)
2001	-6.7 C (19.9 F)
2002	-7.8 C (18.0 F)
2004	7.8 C (46.0 F)

Wettest day (Rx1day)

The wettest day of the year at Groveton, 1923 to 2004. The record is 307.3 mm (12.1 in) in 1994, marked on the chart; the median year is 93.1 mm (3.7 in).

Wettest day (Rx1day) at Groveton by year
Year	Wettest day (Rx1day)
1923	109.7 mm (4.3 in)
1924	109.2 mm (4.3 in)
1925	78.0 mm (3.1 in)
1926	79.5 mm (3.1 in)
1927	134.6 mm (5.3 in)
1928	61.0 mm (2.4 in)
1929	152.4 mm (6.0 in)
1930	93.2 mm (3.7 in)
1931	46.5 mm (1.8 in)
1947	73.7 mm (2.9 in)
1948	50.0 mm (2.0 in)
1949	74.9 mm (2.9 in)
1950	64.8 mm (2.6 in)
1951	35.6 mm (1.4 in)
1952	39.6 mm (1.6 in)
1953	148.3 mm (5.8 in)
1954	114.8 mm (4.5 in)
1955	96.8 mm (3.8 in)
1956	66.5 mm (2.6 in)
1957	148.3 mm (5.8 in)
1958	171.5 mm (6.8 in)
1959	128.5 mm (5.1 in)
1960	102.9 mm (4.1 in)
1961	133.4 mm (5.3 in)
1962	66.8 mm (2.6 in)
1963	60.5 mm (2.4 in)
1964	99.8 mm (3.9 in)
1965	81.3 mm (3.2 in)
1966	130.8 mm (5.1 in)
1967	71.9 mm (2.8 in)
1968	99.1 mm (3.9 in)
1969	93.0 mm (3.7 in)
1970	90.7 mm (3.6 in)
1971	63.5 mm (2.5 in)
1972	71.1 mm (2.8 in)
1973	101.6 mm (4.0 in)
1974	90.9 mm (3.6 in)
1975	84.1 mm (3.3 in)
1976	45.5 mm (1.8 in)
1977	76.7 mm (3.0 in)
1978	122.4 mm (4.8 in)
1979	114.3 mm (4.5 in)
1980	72.9 mm (2.9 in)
1981	63.2 mm (2.5 in)
1982	121.9 mm (4.8 in)
1983	95.8 mm (3.8 in)
1984	116.3 mm (4.6 in)
1985	125.2 mm (4.9 in)
1986	88.9 mm (3.5 in)
1987	108.0 mm (4.3 in)
1988	46.7 mm (1.8 in)
1989	94.5 mm (3.7 in)
1990	149.9 mm (5.9 in)
1991	98.0 mm (3.9 in)
1992	78.7 mm (3.1 in)
1993	85.9 mm (3.4 in)
1994	307.3 mm (12.1 in)
1995	101.6 mm (4.0 in)
1996	54.6 mm (2.1 in)
1997	76.2 mm (3.0 in)
1998	174.2 mm (6.9 in)
1999	85.1 mm (3.4 in)
2000	143.5 mm (5.6 in)
2001	111.8 mm (4.4 in)
2002	47.0 mm (1.9 in)
2004	114.3 mm (4.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Groveton, 1923 to 2004. The record is 427.5 mm (16.8 in) in 1994, marked on the chart; the median year is 135.8 mm (5.3 in).

Wettest five days (Rx5day) at Groveton by year
Year	Wettest five days (Rx5day)
1923	170.2 mm (6.7 in)
1924	175.0 mm (6.9 in)
1925	161.7 mm (6.4 in)
1926	109.1 mm (4.3 in)
1927	180.3 mm (7.1 in)
1928	102.4 mm (4.0 in)
1929	274.0 mm (10.8 in)
1930	96.6 mm (3.8 in)
1931	51.8 mm (2.0 in)
1947	101.1 mm (4.0 in)
1948	94.2 mm (3.7 in)
1949	152.5 mm (6.0 in)
1950	150.9 mm (5.9 in)
1951	82.3 mm (3.2 in)
1952	68.1 mm (2.7 in)
1953	209.7 mm (8.3 in)
1954	131.3 mm (5.2 in)
1955	160.1 mm (6.3 in)
1956	93.2 mm (3.7 in)
1957	169.7 mm (6.7 in)
1958	208.1 mm (8.2 in)
1959	158.2 mm (6.2 in)
1960	209.0 mm (8.2 in)
1961	204.6 mm (8.1 in)
1962	99.6 mm (3.9 in)
1963	69.9 mm (2.8 in)
1964	103.4 mm (4.1 in)
1965	157.0 mm (6.2 in)
1966	151.4 mm (6.0 in)
1967	87.9 mm (3.5 in)
1968	190.4 mm (7.5 in)
1969	168.1 mm (6.6 in)
1970	95.2 mm (3.7 in)
1971	94.2 mm (3.7 in)
1972	91.7 mm (3.6 in)
1973	243.6 mm (9.6 in)
1974	148.3 mm (5.8 in)
1975	90.4 mm (3.6 in)
1976	72.2 mm (2.8 in)
1977	150.4 mm (5.9 in)
1978	122.4 mm (4.8 in)
1979	167.9 mm (6.6 in)
1980	148.1 mm (5.8 in)
1981	113.8 mm (4.5 in)
1982	182.4 mm (7.2 in)
1983	120.4 mm (4.7 in)
1984	191.7 mm (7.5 in)
1985	126.5 mm (5.0 in)
1986	134.2 mm (5.3 in)
1987	130.1 mm (5.1 in)
1988	72.4 mm (2.9 in)
1989	182.1 mm (7.2 in)
1990	265.5 mm (10.5 in)
1991	185.4 mm (7.3 in)
1992	100.4 mm (4.0 in)
1993	137.3 mm (5.4 in)
1994	427.5 mm (16.8 in)
1995	127.2 mm (5.0 in)
1996	94.2 mm (3.7 in)
1997	88.9 mm (3.5 in)
1998	148.8 mm (5.9 in)
1999	128.5 mm (5.1 in)
2000	n/a
2001	293.5 mm (11.6 in)
2002	n/a
2004	124.5 mm (4.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Groveton, 1923 to 2004. The record is 53 days in 1924, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Groveton by year
Year	Longest dry spell (CDD)
1923	15 days
1924	53 days
1925	35 days
1926	13 days
1927	36 days
1928	19 days
1929	33 days
1930	27 days
1931	35 days
1947	16 days
1948	38 days
1949	21 days
1950	21 days
1951	19 days
1952	51 days
1953	51 days
1954	34 days
1955	28 days
1956	31 days
1957	24 days
1958	41 days
1959	22 days
1960	40 days
1961	19 days
1962	27 days
1963	34 days
1964	24 days
1965	29 days
1966	24 days
1967	19 days
1968	15 days
1969	40 days
1970	31 days
1971	34 days
1972	29 days
1973	14 days
1974	20 days
1975	23 days
1976	23 days
1977	22 days
1978	21 days
1979	31 days
1980	30 days
1981	21 days
1982	19 days
1983	20 days
1984	23 days
1985	20 days
1986	30 days
1987	23 days
1988	29 days
1989	35 days
1990	21 days
1991	28 days
1992	26 days
1993	31 days
1994	25 days
1995	18 days
1996	30 days
1997	21 days
1998	13 days
1999	n/a
2000	1 day
2001	n/a
2002	1 day
2004	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.

Frost Dates and Growing Season

31 years with a frost

Across 31 years with a frost, the median last spring frost at Groveton falls on 14 March and the median first autumn frost on 14 November, which leaves a median of 241 days between them.

Fitted over all years, the growing season changes by +9.8 days per decade at this station.

Frost dates and growing season at Groveton
Measure	Median, all years	Earliest period	Recent period (1969 to 2001)	Recent against earliest	Fitted trend
Last spring frost	14 March	n/a	14 March	n/a	-7.4 days per decade
First autumn frost	14 November	n/a	14 November	n/a	+2.3 days per decade
Growing days	241 days	n/a	244 days	n/a	+9.8 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

51 years, 1924 to 1997

A day with at least 92.0 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 235.8 mm (9.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Groveton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	92.0 mm (3.6 in)
5 years	125.2 mm (4.9 in)
10 years	149.1 mm (5.9 in)
25 years	181.9 mm (7.2 in)
50 years	208.1 mm (8.2 in)
100 years	235.8 mm (9.3 in)	Longer than the 51 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, 51 years of values from 1924 to 1997.

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: 307.3 mm (12.1 in) in 1994; 171.5 mm (6.8 in) in 1958; 152.4 mm (6.0 in) in 1929.

Download the Data

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