Grenville Weather Records (USC00293706)

Record envelope, standing records and threshold days for Grenville (USC00293706), New Mexico, United States, with 83 years of record.

Key Facts for Grenville

Grenville (USC00293706) is a weather station in New Mexico, United States at 36.59 latitude and -103.62 longitude, 1,829 m (6,002 ft) above sea level.
The station reports from 1940 to 2022, 83 years of record.
1,464 records set at Grenville still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grenville tied a daily record high minimum temperature of 17.8 C (64.0 F) on 10 July 2022.

About the Station

Location: New Mexico, United States, 36.59 latitude, -103.62 longitude.
Elevation: 1,829 m (6,002 ft).
Period of record: 1940 to 2022, 83 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 Grenville. 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 Grenville, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	-26.1 C (-15.0 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-14.4 C (6.1 F)	n/a	n/a
May	37.2 C (99.0 F)	-7.2 C (19.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	37.8 C (100.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	3.3 C (37.9 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-7.2 C (19.0 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-16.7 C (1.9 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-26.1 C (-15.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Grenville still stand. 1955 holds the most, with 35.

Standing records at Grenville by the year they were set
Year set	Standing records
1940	2
1941	12
1942	27
1943	23
1944	14
1945	19
1946	22
1947	19
1948	18
1949	12
1950	19
1951	23
1952	19
1953	17
1954	13
1955	35
1956	20
1957	17
1958	18
1959	23
1960	15
1961	20
1962	34
1963	28
1964	12
1965	25
1966	12
1967	22
1968	11
1969	24
1970	22
1971	35
1972	23
1973	26
1974	25
1975	16
1976	13
1977	9
1978	18
1979	16
1980	19
1981	19
1982	13
1983	22
1984	8
1985	12
1986	21
1987	14
1988	9
1989	27
1990	20
1991	19
1992	11
1993	15
1994	13
1995	17
1996	30
1997	19
1998	21
1999	17
2000	27
2001	14
2002	21
2003	22
2004	15
2005	11
2006	15
2007	8
2008	13
2009	13
2010	12
2011	24
2012	14
2013	16
2014	16
2015	13
2016	14
2017	20
2018	10
2019	22
2020	9
2022	11

All-Time Record Progression

3 new records

3 all-time records were set at Grenville between 30 March 1973 and 29 December 2006. Each dot is a new record.

When Grenville set new all-time records
Date	Kind	Detail
1973-03-30	Record daily snowfall	Record daily snowfall 61.0 cm (24.0 in)
1977-06-28	Record high minimum temperature	Record high minimum temperature 22.8 C (73.0 F)
2006-12-29	Record snow depth	Record snow depth 40.6 cm (16.0 in)

Wettest Day of Each Month

Sep: 131.6 mm (5.2 in)

The wettest day on record for each calendar month at Grenville. The most was 131.6 mm (5.2 in) on 22 September 1941.

Record daily precipitation for each month at Grenville
Month	Record daily precipitation (mm)	Date
Jan	22.9 mm (0.9 in)	16 January 2001
Feb	21.6 mm (0.9 in)	23 February 2016
Mar	61.0 mm (2.4 in)	30 March 1973
Apr	58.4 mm (2.3 in)	18 April 1942
May	82.8 mm (3.3 in)	13 May 1965
Jun	105.4 mm (4.1 in)	18 June 1965
Jul	76.5 mm (3.0 in)	13 July 1951
Aug	73.7 mm (2.9 in)	17 August 2015
Sep	131.6 mm (5.2 in)	22 September 1941
Oct	59.9 mm (2.4 in)	7 October 1954
Nov	57.2 mm (2.3 in)	1 November 1948
Dec	50.8 mm (2.0 in)	27 December 1942

Period of Record Coverage

1940 to 2022

83 years of record at Grenville, 1940 to 2022. 14 years have data for under 90 percent of days and are left out of rankings: 1940, 1947, 1949, 1950, 1951, 1953, 1955, 2004 and others.

Days with data per year at Grenville
Year	Days with data	Share of year	Complete
1940	70	19%	No
1941	362	99%	Yes
1942	343	94%	Yes
1943	360	99%	Yes
1944	363	99%	Yes
1945	360	99%	Yes
1946	336	92%	Yes
1947	301	82%	No
1948	341	93%	Yes
1949	311	85%	No
1950	283	78%	No
1951	324	89%	No
1952	332	91%	Yes
1953	326	89%	No
1954	336	92%	Yes
1955	310	85%	No
1956	341	93%	Yes
1957	337	92%	Yes
1958	334	92%	Yes
1959	346	95%	Yes
1960	346	95%	Yes
1961	335	92%	Yes
1962	339	93%	Yes
1963	348	95%	Yes
1964	340	93%	Yes
1965	347	95%	Yes
1966	348	95%	Yes
1967	355	97%	Yes
1968	365	100%	Yes
1969	363	99%	Yes
1970	363	99%	Yes
1971	363	99%	Yes
1972	365	100%	Yes
1973	361	99%	Yes
1974	362	99%	Yes
1975	360	99%	Yes
1976	330	90%	Yes
1977	331	91%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	365	100%	Yes
1981	364	100%	Yes
1982	339	93%	Yes
1983	330	90%	Yes
1984	347	95%	Yes
1985	360	99%	Yes
1986	354	97%	Yes
1987	353	97%	Yes
1988	355	97%	Yes
1989	362	99%	Yes
1990	358	98%	Yes
1991	357	98%	Yes
1992	359	98%	Yes
1993	349	96%	Yes
1994	350	96%	Yes
1995	352	96%	Yes
1996	355	97%	Yes
1997	349	96%	Yes
1998	334	92%	Yes
1999	347	95%	Yes
2000	345	94%	Yes
2001	344	94%	Yes
2002	339	93%	Yes
2003	346	95%	Yes
2004	304	83%	No
2005	217	59%	No
2006	342	94%	Yes
2007	343	94%	Yes
2008	354	97%	Yes
2009	352	96%	Yes
2010	350	96%	Yes
2011	360	99%	Yes
2012	293	80%	No
2013	274	75%	No
2014	364	100%	Yes
2015	365	100%	Yes
2016	335	92%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	364	100%	Yes
2020	241	66%	No
2021	31	8%	No
2022	168	46%	No

Latest Records

Latest records at Grenville
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 July 2022	Grenville, US	daily high min (Tie)	17.8 C (64.0 F)	tie	59 years	6 of 100 (Routine)
7 July 2022	Grenville, US	daily rain	45.7 mm (1.8 in)	16.7 mm (0.7 in)	75 years	44 of 100 (Notable)
27 June 2022	Grenville, US	daily low max	13.9 C (57.0 F)	8.9 C (16.0 F)	21 years	33 of 100 (Routine)
14 June 2022	Grenville, US	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	69 years	29 of 100 (Routine)
12 June 2022	Grenville, US	daily high max	37.8 C (100.0 F)	1.7 C (3.1 F)	41 years	23 of 100 (Routine)
12 June 2022	Grenville, US	daily high min	20.0 C (68.0 F)	4.4 C (7.9 F)	4 years	22 of 100 (Routine)
28 May 2022	Grenville, US	daily high min	13.3 C (55.9 F)	0.5 C (0.9 F)	79 years	32 of 100 (Routine)
25 May 2022	Grenville, US	daily low max	9.4 C (48.9 F)	3.4 C (6.1 F)	73 years	36 of 100 (Notable)
22 May 2022	Grenville, US	daily low max	5.0 C (41.0 F)	2.2 C (4.0 F)	59 years	29 of 100 (Routine)
8 May 2022	Grenville, US	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	25 years	17 of 100 (Routine)
6 May 2022	Grenville, US	daily high min	13.9 C (57.0 F)	0.6 C (1.1 F)	60 years	27 of 100 (Routine)
27 April 2022	Grenville, US	daily high min	8.9 C (48.0 F)	0.6 C (1.1 F)	67 years	29 of 100 (Routine)
23 February 2022	Grenville, US	daily low min	-20.0 C (-4.0 F)	2.8 C (5.0 F)	62 years	31 of 100 (Routine)
12 February 2022	Grenville, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	4 years	2 of 100 (Routine)
5 February 2022	Grenville, US	daily low min (Tie)	-27.2 C (-17.0 F)	tie	40 years	5 of 100 (Routine)
2 February 2022	Grenville, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	63 years	44 of 100 (Notable)
2 February 2022	Grenville, US	daily rain	5.1 mm (0.20 in)	2.8 mm (0.11 in)	63 years	20 of 100 (Routine)
1 January 2022	Grenville, US	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	56 years	39 of 100 (Notable)
1 January 2022	Grenville, US	daily rain	7.6 mm (0.30 in)	2.5 mm (0.10 in)	19 years	19 of 100 (Routine)
10 January 2021	Grenville, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	19 years	3 of 100 (Routine)

Climate Trend

67 complete years, 1941 to 2019

One stripe for each of 67 complete years at Grenville, 1941 to 2019. Blue stripes are years cooler than the station's own mean of 10.5 C (50.8 F); red stripes are warmer. The coolest year was 1961, at 9.2 C (48.6 F), and the warmest was 2000, at 12.0 C (53.5 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Grenville as warming stripes, 1941 to 2019
Year	Annual mean temperature	Difference from the station mean
1941	10.0 C	-0.47 C
1942	9.7 C	-0.76 C
1943	10.4 C	-0.10 C
1944	9.7 C	-0.78 C
1945	9.9 C	-0.56 C
1946	10.8 C	+0.32 C
1948	9.5 C	-0.98 C
1949	10.0 C	-0.45 C
1951	9.6 C	-0.85 C
1952	10.2 C	-0.24 C
1953	10.6 C	+0.13 C
1956	11.1 C	+0.67 C
1957	9.9 C	-0.60 C
1959	9.4 C	-1.07 C
1960	9.8 C	-0.66 C
1961	9.2 C	-1.25 C
1962	10.4 C	-0.03 C
1963	11.1 C	+0.67 C
1964	9.9 C	-0.51 C
1965	10.0 C	-0.44 C
1966	10.2 C	-0.22 C
1967	10.3 C	-0.12 C
1968	10.1 C	-0.34 C
1969	9.7 C	-0.75 C
1970	10.0 C	-0.47 C
1971	9.9 C	-0.53 C
1972	10.4 C	-0.01 C
1973	10.1 C	-0.35 C
1974	11.2 C	+0.78 C
1975	9.7 C	-0.72 C
1978	10.1 C	-0.35 C
1979	9.3 C	-1.13 C
1980	10.6 C	+0.18 C
1981	11.3 C	+0.81 C
1982	9.8 C	-0.68 C
1983	9.5 C	-0.98 C
1984	9.6 C	-0.85 C
1985	10.0 C	-0.50 C
1986	10.8 C	+0.39 C
1987	9.9 C	-0.52 C
1988	10.2 C	-0.27 C
1989	10.5 C	+0.08 C
1990	10.2 C	-0.21 C
1991	10.2 C	-0.22 C
1992	10.5 C	+0.07 C
1993	10.2 C	-0.30 C
1994	11.6 C	+1.11 C
1995	11.1 C	+0.65 C
1996	11.2 C	+0.76 C
1997	10.2 C	-0.30 C
1998	11.4 C	+0.94 C
1999	11.5 C	+1.00 C
2000	12.0 C	+1.51 C
2001	11.6 C	+1.13 C
2002	11.3 C	+0.84 C
2003	11.9 C	+1.44 C
2006	10.9 C	+0.49 C
2007	10.6 C	+0.13 C
2008	10.8 C	+0.32 C
2009	10.8 C	+0.31 C
2010	10.9 C	+0.43 C
2011	11.1 C	+0.67 C
2014	11.0 C	+0.58 C
2015	11.2 C	+0.70 C
2017	11.8 C	+1.30 C
2018	11.3 C	+0.85 C
2019	10.9 C	+0.45 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1941 to 2019. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Grenville
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1941 to 2019	67	Rise
Mean daily maximum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.5) per decade	1941 to 2019	67	Rise
Mean daily minimum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1941 to 2019	67	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

1940 to 2022

Yearly extremes at Grenville: 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)	1968	35.6 C (96.1 F)	83
Coldest night (TNn)	-32.2 C (-26.0 F)	1963	-21.7 C (-7.1 F)	83
Wettest day (Rx1day)	131.6 mm (5.2 in)	1941	43.2 mm (1.7 in)	83
Wettest five days (Rx5day)	268.0 mm (10.6 in)	1941	65.2 mm (2.6 in)	83
Longest dry spell (CDD)	88 days	1972	45 days	83

Hottest day (TXx)

The hottest day of the year at Grenville, 1940 to 2022. The record is 40.0 C (104.0 F) in 1968, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Grenville by year
Year	Hottest day (TXx)
1940	25.6 C (78.1 F)
1941	33.3 C (91.9 F)
1942	35.0 C (95.0 F)
1943	36.1 C (97.0 F)
1944	37.2 C (99.0 F)
1945	35.6 C (96.1 F)
1946	37.8 C (100.0 F)
1947	35.0 C (95.0 F)
1948	35.6 C (96.1 F)
1949	33.3 C (91.9 F)
1950	34.4 C (93.9 F)
1951	35.0 C (95.0 F)
1952	36.1 C (97.0 F)
1953	36.1 C (97.0 F)
1954	35.0 C (95.0 F)
1955	33.9 C (93.0 F)
1956	37.2 C (99.0 F)
1957	37.2 C (99.0 F)
1958	36.1 C (97.0 F)
1959	34.4 C (93.9 F)
1960	35.6 C (96.1 F)
1961	32.8 C (91.0 F)
1962	34.4 C (93.9 F)
1963	36.1 C (97.0 F)
1964	35.0 C (95.0 F)
1965	31.1 C (88.0 F)
1966	37.2 C (99.0 F)
1967	32.2 C (90.0 F)
1968	40.0 C (104.0 F)
1969	35.6 C (96.1 F)
1970	35.0 C (95.0 F)
1971	36.7 C (98.1 F)
1972	35.0 C (95.0 F)
1973	37.8 C (100.0 F)
1974	38.9 C (102.0 F)
1975	35.0 C (95.0 F)
1976	35.0 C (95.0 F)
1977	35.0 C (95.0 F)
1978	35.6 C (96.1 F)
1979	33.9 C (93.0 F)
1980	36.7 C (98.1 F)
1981	37.8 C (100.0 F)
1982	33.3 C (91.9 F)
1983	35.0 C (95.0 F)
1984	33.3 C (91.9 F)
1985	36.7 C (98.1 F)
1986	36.1 C (97.0 F)
1987	36.1 C (97.0 F)
1988	35.0 C (95.0 F)
1989	33.9 C (93.0 F)
1990	37.8 C (100.0 F)
1991	34.4 C (93.9 F)
1992	37.8 C (100.0 F)
1993	36.7 C (98.1 F)
1994	37.2 C (99.0 F)
1995	37.8 C (100.0 F)
1996	36.1 C (97.0 F)
1997	35.0 C (95.0 F)
1998	38.9 C (102.0 F)
1999	35.6 C (96.1 F)
2000	37.2 C (99.0 F)
2001	37.2 C (99.0 F)
2002	36.1 C (97.0 F)
2003	36.7 C (98.1 F)
2004	35.0 C (95.0 F)
2005	35.6 C (96.1 F)
2006	36.7 C (98.1 F)
2007	35.6 C (96.1 F)
2008	36.1 C (97.0 F)
2009	36.1 C (97.0 F)
2010	35.6 C (96.1 F)
2011	37.8 C (100.0 F)
2012	37.2 C (99.0 F)
2013	35.0 C (95.0 F)
2014	36.1 C (97.0 F)
2015	34.4 C (93.9 F)
2016	37.2 C (99.0 F)
2017	37.2 C (99.0 F)
2018	37.2 C (99.0 F)
2019	37.8 C (100.0 F)
2020	35.6 C (96.1 F)
2021	16.7 C (62.1 F)
2022	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Grenville, 1940 to 2022. The record is -32.2 C (-26.0 F) in 1963, marked on the chart; the median year is -21.7 C (-7.1 F).

Coldest night (TNn) at Grenville by year
Year	Coldest night (TNn)
1940	-15.0 C (5.0 F)
1941	-15.6 C (3.9 F)
1942	-23.3 C (-9.9 F)
1943	-30.0 C (-22.0 F)
1944	-17.2 C (1.0 F)
1945	-23.9 C (-11.0 F)
1946	-19.4 C (-2.9 F)
1947	-18.9 C (-2.0 F)
1948	-26.7 C (-16.1 F)
1949	-22.2 C (-8.0 F)
1950	-22.8 C (-9.0 F)
1951	-28.3 C (-18.9 F)
1952	-21.1 C (-6.0 F)
1953	-16.7 C (1.9 F)
1954	-17.2 C (1.0 F)
1955	-20.6 C (-5.1 F)
1956	-21.1 C (-6.0 F)
1957	-19.4 C (-2.9 F)
1958	-16.7 C (1.9 F)
1959	-26.1 C (-15.0 F)
1960	-20.0 C (-4.0 F)
1961	-22.8 C (-9.0 F)
1962	-26.1 C (-15.0 F)
1963	-32.2 C (-26.0 F)
1964	-22.8 C (-9.0 F)
1965	-18.9 C (-2.0 F)
1966	-23.3 C (-9.9 F)
1967	-17.8 C (0.0 F)
1968	-17.8 C (0.0 F)
1969	-18.9 C (-2.0 F)
1970	-22.2 C (-8.0 F)
1971	-29.4 C (-20.9 F)
1972	-25.0 C (-13.0 F)
1973	-17.8 C (0.0 F)
1974	-22.2 C (-8.0 F)
1975	-25.0 C (-13.0 F)
1976	-28.9 C (-20.0 F)
1977	-21.1 C (-6.0 F)
1978	-26.1 C (-15.0 F)
1979	-24.4 C (-11.9 F)
1980	-17.8 C (0.0 F)
1981	-28.3 C (-18.9 F)
1982	-31.1 C (-24.0 F)
1983	-25.0 C (-13.0 F)
1984	-28.9 C (-20.0 F)
1985	-23.9 C (-11.0 F)
1986	-24.4 C (-11.9 F)
1987	-22.2 C (-8.0 F)
1988	-21.1 C (-6.0 F)
1989	-24.4 C (-11.9 F)
1990	-26.1 C (-15.0 F)
1991	-23.9 C (-11.0 F)
1992	-17.2 C (1.0 F)
1993	-18.9 C (-2.0 F)
1994	-21.1 C (-6.0 F)
1995	-16.1 C (3.0 F)
1996	-26.1 C (-15.0 F)
1997	-26.7 C (-16.1 F)
1998	-21.7 C (-7.1 F)
1999	-17.8 C (0.0 F)
2000	-16.7 C (1.9 F)
2001	-18.9 C (-2.0 F)
2002	-18.3 C (-0.9 F)
2003	-17.8 C (0.0 F)
2004	-18.3 C (-0.9 F)
2005	-23.3 C (-9.9 F)
2006	-20.6 C (-5.1 F)
2007	-22.2 C (-8.0 F)
2008	-21.1 C (-6.0 F)
2009	-23.3 C (-9.9 F)
2010	-18.9 C (-2.0 F)
2011	-27.8 C (-18.0 F)
2012	-13.9 C (7.0 F)
2013	-21.1 C (-6.0 F)
2014	-22.2 C (-8.0 F)
2015	-17.2 C (1.0 F)
2016	-22.2 C (-8.0 F)
2017	-22.2 C (-8.0 F)
2018	-19.4 C (-2.9 F)
2019	-18.9 C (-2.0 F)
2020	-18.9 C (-2.0 F)
2021	-16.7 C (1.9 F)
2022	-27.2 C (-17.0 F)

Wettest day (Rx1day)

The wettest day of the year at Grenville, 1940 to 2022. The record is 131.6 mm (5.2 in) in 1941, marked on the chart; the median year is 43.2 mm (1.7 in).

Wettest day (Rx1day) at Grenville by year
Year	Wettest day (Rx1day)
1940	56.6 mm (2.2 in)
1941	131.6 mm (5.2 in)
1942	81.8 mm (3.2 in)
1943	47.2 mm (1.9 in)
1944	66.3 mm (2.6 in)
1945	51.6 mm (2.0 in)
1946	58.4 mm (2.3 in)
1947	29.0 mm (1.1 in)
1948	57.2 mm (2.3 in)
1949	58.4 mm (2.3 in)
1950	52.1 mm (2.1 in)
1951	76.5 mm (3.0 in)
1952	24.1 mm (0.9 in)
1953	30.2 mm (1.2 in)
1954	59.9 mm (2.4 in)
1955	76.2 mm (3.0 in)
1956	58.2 mm (2.3 in)
1957	43.9 mm (1.7 in)
1958	27.7 mm (1.1 in)
1959	34.8 mm (1.4 in)
1960	47.5 mm (1.9 in)
1961	32.3 mm (1.3 in)
1962	35.8 mm (1.4 in)
1963	20.8 mm (0.8 in)
1964	18.3 mm (0.7 in)
1965	105.4 mm (4.1 in)
1966	42.7 mm (1.7 in)
1967	45.0 mm (1.8 in)
1968	65.3 mm (2.6 in)
1969	41.1 mm (1.6 in)
1970	33.0 mm (1.3 in)
1971	30.0 mm (1.2 in)
1972	66.0 mm (2.6 in)
1973	61.0 mm (2.4 in)
1974	40.6 mm (1.6 in)
1975	36.1 mm (1.4 in)
1976	36.1 mm (1.4 in)
1977	73.7 mm (2.9 in)
1978	48.3 mm (1.9 in)
1979	63.5 mm (2.5 in)
1980	29.2 mm (1.1 in)
1981	67.3 mm (2.6 in)
1982	53.3 mm (2.1 in)
1983	28.4 mm (1.1 in)
1984	42.7 mm (1.7 in)
1985	40.1 mm (1.6 in)
1986	39.4 mm (1.6 in)
1987	34.8 mm (1.4 in)
1988	39.4 mm (1.6 in)
1989	40.6 mm (1.6 in)
1990	40.1 mm (1.6 in)
1991	48.3 mm (1.9 in)
1992	29.5 mm (1.2 in)
1993	39.1 mm (1.5 in)
1994	35.6 mm (1.4 in)
1995	44.5 mm (1.8 in)
1996	57.7 mm (2.3 in)
1997	78.7 mm (3.1 in)
1998	38.6 mm (1.5 in)
1999	50.8 mm (2.0 in)
2000	40.6 mm (1.6 in)
2001	50.8 mm (2.0 in)
2002	25.4 mm (1.0 in)
2003	22.9 mm (0.9 in)
2004	69.9 mm (2.8 in)
2005	40.6 mm (1.6 in)
2006	63.5 mm (2.5 in)
2007	30.5 mm (1.2 in)
2008	50.8 mm (2.0 in)
2009	34.3 mm (1.4 in)
2010	81.3 mm (3.2 in)
2011	45.7 mm (1.8 in)
2012	29.2 mm (1.1 in)
2013	38.1 mm (1.5 in)
2014	53.3 mm (2.1 in)
2015	73.7 mm (2.9 in)
2016	45.7 mm (1.8 in)
2017	43.2 mm (1.7 in)
2018	22.9 mm (0.9 in)
2019	24.1 mm (0.9 in)
2020	43.2 mm (1.7 in)
2021	0.0 mm (0.00 in)
2022	45.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grenville, 1940 to 2022. The record is 268.0 mm (10.6 in) in 1941, marked on the chart; the median year is 65.2 mm (2.6 in).

Wettest five days (Rx5day) at Grenville by year
Year	Wettest five days (Rx5day)
1940	56.6 mm (2.2 in)
1941	268.0 mm (10.6 in)
1942	142.2 mm (5.6 in)
1943	51.3 mm (2.0 in)
1944	66.3 mm (2.6 in)
1945	108.0 mm (4.3 in)
1946	74.4 mm (2.9 in)
1947	37.7 mm (1.5 in)
1948	59.2 mm (2.3 in)
1949	93.7 mm (3.7 in)
1950	77.0 mm (3.0 in)
1951	79.6 mm (3.1 in)
1952	48.2 mm (1.9 in)
1953	54.1 mm (2.1 in)
1954	96.7 mm (3.8 in)
1955	123.2 mm (4.9 in)
1956	61.7 mm (2.4 in)
1957	65.2 mm (2.6 in)
1958	56.2 mm (2.2 in)
1959	51.0 mm (2.0 in)
1960	80.5 mm (3.2 in)
1961	60.3 mm (2.4 in)
1962	70.0 mm (2.8 in)
1963	44.7 mm (1.8 in)
1964	35.3 mm (1.4 in)
1965	219.7 mm (8.6 in)
1966	76.2 mm (3.0 in)
1967	68.3 mm (2.7 in)
1968	70.9 mm (2.8 in)
1969	64.3 mm (2.5 in)
1970	55.9 mm (2.2 in)
1971	45.0 mm (1.8 in)
1972	77.9 mm (3.1 in)
1973	73.7 mm (2.9 in)
1974	50.5 mm (2.0 in)
1975	43.2 mm (1.7 in)
1976	66.1 mm (2.6 in)
1977	89.4 mm (3.5 in)
1978	81.6 mm (3.2 in)
1979	79.9 mm (3.1 in)
1980	38.1 mm (1.5 in)
1981	165.6 mm (6.5 in)
1982	79.5 mm (3.1 in)
1983	32.0 mm (1.3 in)
1984	47.8 mm (1.9 in)
1985	68.1 mm (2.7 in)
1986	89.6 mm (3.5 in)
1987	66.8 mm (2.6 in)
1988	50.6 mm (2.0 in)
1989	47.2 mm (1.9 in)
1990	50.3 mm (2.0 in)
1991	82.0 mm (3.2 in)
1992	52.1 mm (2.1 in)
1993	54.2 mm (2.1 in)
1994	106.8 mm (4.2 in)
1995	69.6 mm (2.7 in)
1996	64.8 mm (2.6 in)
1997	102.1 mm (4.0 in)
1998	52.2 mm (2.1 in)
1999	117.6 mm (4.6 in)
2000	65.5 mm (2.6 in)
2001	77.5 mm (3.1 in)
2002	28.9 mm (1.1 in)
2003	55.2 mm (2.2 in)
2004	140.5 mm (5.5 in)
2005	58.4 mm (2.3 in)
2006	72.4 mm (2.9 in)
2007	55.4 mm (2.2 in)
2008	95.7 mm (3.8 in)
2009	52.1 mm (2.1 in)
2010	86.4 mm (3.4 in)
2011	10.1 mm (0.4 in)
2012	28.9 mm (1.1 in)
2013	64.7 mm (2.5 in)
2014	55.1 mm (2.2 in)
2015	87.7 mm (3.5 in)
2016	53.3 mm (2.1 in)
2017	62.8 mm (2.5 in)
2018	66.1 mm (2.6 in)
2019	40.7 mm (1.6 in)
2020	58.3 mm (2.3 in)
2021	0.0 mm (0.00 in)
2022	76.2 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grenville, 1940 to 2022. The record is 88 days in 1972, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at Grenville by year
Year	Longest dry spell (CDD)
1940	18 days
1941	62 days
1942	61 days
1943	49 days
1944	26 days
1945	55 days
1946	55 days
1947	36 days
1948	55 days
1949	57 days
1950	59 days
1951	48 days
1952	48 days
1953	61 days
1954	81 days
1955	35 days
1956	59 days
1957	56 days
1958	40 days
1959	33 days
1960	30 days
1961	26 days
1962	50 days
1963	62 days
1964	34 days
1965	52 days
1966	71 days
1967	65 days
1968	59 days
1969	44 days
1970	48 days
1971	37 days
1972	88 days
1973	39 days
1974	54 days
1975	40 days
1976	38 days
1977	50 days
1978	26 days
1979	38 days
1980	59 days
1981	41 days
1982	31 days
1983	24 days
1984	29 days
1985	31 days
1986	30 days
1987	58 days
1988	42 days
1989	49 days
1990	39 days
1991	51 days
1992	56 days
1993	47 days
1994	60 days
1995	58 days
1996	78 days
1997	34 days
1998	47 days
1999	40 days
2000	40 days
2001	53 days
2002	71 days
2003	64 days
2004	28 days
2005	58 days
2006	69 days
2007	31 days
2008	29 days
2009	38 days
2010	56 days
2011	24 days
2012	17 days
2013	39 days
2014	31 days
2015	26 days
2016	45 days
2017	86 days
2018	44 days
2019	43 days
2020	33 days
2021	9 days
2022	27 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

67 years with a frost

Across 67 years with a frost, the median last spring frost at Grenville falls on 11 May and the median first autumn frost on 6 October, which leaves a median of 145 days between them.

In 1985 to 2019 the median growing season was 151 days. That is 11 days more than in 1941 to 1975.

Fitted over all years, the growing season changes by +1.3 days per decade at this station.

Frost dates and growing season at Grenville
Measure	Median, all years	Earliest period (1941 to 1975)	Recent period (1985 to 2019)	Recent against earliest	Fitted trend
Last spring frost	11 May	12 May	9 May	3 days earlier	-0.1 days per decade
First autumn frost	6 October	3 October	8 October	5 days later	+1.2 days per decade
Growing days	145 days	140 days	151 days	11 days more	+1.3 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

74 years, 1941 to 2019

A day with at least 44.9 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 113.8 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Grenville: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.9 mm (1.8 in)
5 years	62.3 mm (2.5 in)
10 years	74.2 mm (2.9 in)
25 years	89.8 mm (3.5 in)
50 years	101.7 mm (4.0 in)
100 years	113.8 mm (4.5 in)	Longer than the 74 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, 74 years of values from 1941 to 2019.

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: 131.6 mm (5.2 in) in 1941; 105.4 mm (4.1 in) in 1965; 81.8 mm (3.2 in) in 1942.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2000 to 2019 against 1961 to 1990

Over 2000 to 2019, Grenville had a mean temperature of 11.2 C (52.1 F) and 393.0 mm (15.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Trinidad (United States, 101 km away), Jemez Springs (United States, 290 km away) and Snowflake (United States, 629 km away).

Climate twins of Grenville: stations whose 1961 to 1990 climate is closest to its 2000 to 2019 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Trinidad	United States	101 km (63 mi)	11.0 C (51.8 F)	389.1 mm (15.3 in)	0.46
Jemez Springs	United States	290 km (180 mi)	11.1 C (52.0 F)	431.3 mm (17.0 in)	0.50
Snowflake	United States	629 km (391 mi)	11.2 C (52.2 F)	319.5 mm (12.6 in)	0.64

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

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