Point Grenville Weather Records (USC00456584)

Record envelope, standing records and threshold days for Point Grenville (USC00456584), Washington, United States, with 33 years of record.

Key Facts for Point Grenville

Point Grenville (USC00456584) is a weather station in Washington, United States at 47.30 latitude and -124.28 longitude, 31 m (102 ft) above sea level.
The station reports from 1947 to 1979, 33 years of record.
1,464 records set at Point Grenville still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Point Grenville set a daily record precipitation of 55.1 mm (2.2 in) on 17 December 1979.

About the Station

Location: Washington, United States, 47.30 latitude, -124.28 longitude.
Elevation: 31 m (102 ft).
Period of record: 1947 to 1979, 33 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 Point 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 Point Grenville, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-11.1 C (12.0 F)	n/a	n/a
Feb	23.3 C (73.9 F)	-7.8 C (18.0 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-4.4 C (24.1 F)	n/a	n/a
Apr	23.3 C (73.9 F)	-2.8 C (27.0 F)	n/a	n/a
May	27.8 C (82.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	27.2 C (81.0 F)	1.1 C (34.0 F)	n/a	n/a
Jul	27.2 C (81.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	25.0 C (77.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	28.3 C (82.9 F)	1.7 C (35.1 F)	n/a	n/a
Oct	24.4 C (75.9 F)	-1.1 C (30.0 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-11.7 C (10.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Point Grenville still stand. 1972 holds the most, with 81.

Standing records at Point Grenville by the year they were set
Year set	Standing records
1947	27
1948	44
1952	34
1953	42
1954	61
1955	68
1956	65
1957	50
1958	58
1959	41
1960	39
1961	70
1962	53
1963	56
1964	36
1965	46
1966	39
1967	36
1968	41
1969	65
1970	71
1971	65
1972	81
1973	49
1974	42
1975	27
1976	27
1977	30
1978	48
1979	53

Wettest Day of Each Month

Nov: 164.8 mm (6.5 in)

The wettest day on record for each calendar month at Point Grenville. The most was 164.8 mm (6.5 in) on 20 November 1959.

Record daily precipitation for each month at Point Grenville
Month	Record daily precipitation (mm)	Date
Jan	91.9 mm (3.6 in)	14 January 1958
Feb	88.9 mm (3.5 in)	19 February 1949
Mar	70.1 mm (2.8 in)	7 March 1956
Apr	106.7 mm (4.2 in)	29 April 1959
May	50.8 mm (2.0 in)	29 May 1969
Jun	49.3 mm (1.9 in)	8 June 1956
Jul	53.3 mm (2.1 in)	12 July 1972
Aug	56.1 mm (2.2 in)	24 August 1978
Sep	61.0 mm (2.4 in)	9 September 1978
Oct	132.1 mm (5.2 in)	30 October 1967
Nov	164.8 mm (6.5 in)	20 November 1959
Dec	150.4 mm (5.9 in)	14 December 1959

Period of Record Coverage

1947 to 1979

30 years of record at Point Grenville, 1947 to 1979. 8 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1952, 1966, 1973, 1974, 1975, 1976.

Days with data per year at Point Grenville
Year	Days with data	Share of year	Complete
1947	207	57%	No
1948	230	63%	No
1952	306	84%	No
1953	356	98%	Yes
1954	357	98%	Yes
1955	356	98%	Yes
1956	355	97%	Yes
1957	362	99%	Yes
1958	361	99%	Yes
1959	360	99%	Yes
1960	359	98%	Yes
1961	343	94%	Yes
1962	351	96%	Yes
1963	360	99%	Yes
1964	332	91%	Yes
1965	359	98%	Yes
1966	325	89%	No
1967	332	91%	Yes
1968	350	96%	Yes
1969	356	98%	Yes
1970	347	95%	Yes
1971	361	99%	Yes
1972	357	98%	Yes
1973	298	82%	No
1974	327	90%	No
1975	277	76%	No
1976	240	66%	No
1977	357	98%	Yes
1978	334	92%	Yes
1979	330	90%	Yes

Latest Records

Latest records at Point Grenville
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 1979	Point Grenville, US	daily rain	55.1 mm (2.2 in)	1.8 mm (0.07 in)	28 years	12 of 100 (Routine)
13 December 1979	Point Grenville, US	daily rain	48.5 mm (1.9 in)	6.8 mm (0.27 in)	1 year	7 of 100 (Routine)
26 October 1979	Point Grenville, US	daily rain	43.2 mm (1.7 in)	17.8 mm (0.7 in)	29 years	23 of 100 (Routine)
7 September 1979	Point Grenville, US	daily rain	25.4 mm (1.0 in)	2.5 mm (0.10 in)	20 years	11 of 100 (Routine)
18 August 1979	Point Grenville, US	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	16 years	24 of 100 (Routine)
1 July 1979	Point Grenville, US	daily rain	32.0 mm (1.3 in)	19.3 mm (0.8 in)	4 years	26 of 100 (Routine)
5 May 1979	Point Grenville, US	daily rain	33.0 mm (1.3 in)	5.1 mm (0.20 in)	30 years	17 of 100 (Routine)
12 April 1979	Point Grenville, US	daily rain	48.3 mm (1.9 in)	10.2 mm (0.4 in)	24 years	19 of 100 (Routine)
25 February 1979	Point Grenville, US	daily rain	55.9 mm (2.2 in)	18.1 mm (0.7 in)	20 years	21 of 100 (Routine)
9 September 1978	Point Grenville, US	monthly rain	61.0 mm (2.4 in)	7.7 mm (0.30 in)	7 years	22 of 100 (Routine)
8 September 1978	Point Grenville, US	monthly rain (Tie)	53.3 mm (2.1 in)	tie	7 years	3 of 100 (Routine)
30 August 1978	Point Grenville, US	daily rain	37.3 mm (1.5 in)	15.2 mm (0.6 in)	13 years	26 of 100 (Routine)
24 August 1978	Point Grenville, US	monthly rain	56.1 mm (2.2 in)	18.0 mm (0.7 in)	18 years	41 of 100 (Notable)
10 August 1978	Point Grenville, US	daily rain	1.5 mm (0.06 in)	0.2 mm (0.01 in)	16 years	8 of 100 (Routine)
26 May 1978	Point Grenville, US	daily rain	22.6 mm (0.9 in)	4.3 mm (0.17 in)	0 years	7 of 100 (Routine)
14 May 1978	Point Grenville, US	daily rain	21.8 mm (0.9 in)	2.0 mm (0.08 in)	4 years	6 of 100 (Routine)
13 May 1978	Point Grenville, US	daily rain	26.2 mm (1.0 in)	0.8 mm (0.03 in)	29 years	11 of 100 (Routine)
11 May 1978	Point Grenville, US	daily rain	17.0 mm (0.7 in)	0.5 mm (0.02 in)	8 years	5 of 100 (Routine)
7 February 1978	Point Grenville, US	daily rain	34.5 mm (1.4 in)	6.6 mm (0.26 in)	27 years	15 of 100 (Routine)
13 December 1977	Point Grenville, US	daily rain	41.7 mm (1.6 in)	7.4 mm (0.29 in)	8 years	9 of 100 (Routine)

Climate Trend

19 complete years, 1953 to 1979

One stripe for each of 19 complete years at Point Grenville, 1953 to 1979. Blue stripes are years cooler than the station's own mean of 9.4 C (49.0 F); red stripes are warmer. The coolest year was 1955, at 8.6 C (47.5 F), and the warmest was 1958, at 10.6 C (51.1 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Point Grenville as warming stripes, 1953 to 1979
Year	Annual mean temperature	Difference from the station mean
1953	10.1 C	+0.62 C
1954	9.7 C	+0.24 C
1955	8.6 C	-0.81 C
1956	8.8 C	-0.68 C
1957	9.9 C	+0.44 C
1958	10.6 C	+1.17 C
1959	9.7 C	+0.24 C
1960	9.0 C	-0.41 C
1961	8.7 C	-0.70 C
1962	9.2 C	-0.19 C
1963	10.0 C	+0.61 C
1965	9.5 C	+0.07 C
1968	9.5 C	+0.06 C
1969	9.5 C	+0.08 C
1971	9.9 C	+0.46 C
1972	8.8 C	-0.64 C
1977	9.2 C	-0.23 C
1978	9.6 C	+0.16 C
1979	9.0 C	-0.45 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1947 to 1979

Yearly extremes at Point Grenville: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	28.3 C (82.9 F)	1961	25.3 C (77.5 F)	30
Coldest night (TNn)	-11.7 C (10.9 F)	1964	-5.8 C (21.5 F)	30
Wettest day (Rx1day)	164.8 mm (6.5 in)	1959	70.1 mm (2.8 in)	33
Wettest five days (Rx5day)	320.2 mm (12.6 in)	1959	158.9 mm (6.3 in)	33
Longest dry spell (CDD)	54 days	1978	22 days	33

Hottest day (TXx)

The hottest day of the year at Point Grenville, 1947 to 1979. The record is 28.3 C (82.9 F) in 1961, marked on the chart; the median year is 25.3 C (77.5 F).

Hottest day (TXx) at Point Grenville by year
Year	Hottest day (TXx)
1947	25.6 C (78.1 F)
1948	22.2 C (72.0 F)
1949	n/a
1950	n/a
1951	n/a
1952	26.7 C (80.1 F)
1953	26.1 C (79.0 F)
1954	23.9 C (75.0 F)
1955	27.2 C (81.0 F)
1956	23.3 C (73.9 F)
1957	25.6 C (78.1 F)
1958	27.2 C (81.0 F)
1959	27.2 C (81.0 F)
1960	22.8 C (73.0 F)
1961	28.3 C (82.9 F)
1962	22.2 C (72.0 F)
1963	24.4 C (75.9 F)
1964	24.4 C (75.9 F)
1965	21.7 C (71.1 F)
1966	24.4 C (75.9 F)
1967	26.1 C (79.0 F)
1968	22.2 C (72.0 F)
1969	23.9 C (75.0 F)
1970	26.7 C (80.1 F)
1971	25.0 C (77.0 F)
1972	27.8 C (82.0 F)
1973	26.1 C (79.0 F)
1974	28.3 C (82.9 F)
1975	25.6 C (78.1 F)
1976	23.3 C (73.9 F)
1977	22.2 C (72.0 F)
1978	24.4 C (75.9 F)
1979	26.7 C (80.1 F)

Coldest night (TNn)

The coldest night of the year at Point Grenville, 1947 to 1979. The record is -11.7 C (10.9 F) in 1964, marked on the chart; the median year is -5.8 C (21.5 F).

Coldest night (TNn) at Point Grenville by year
Year	Coldest night (TNn)
1947	0.0 C (32.0 F)
1948	-3.3 C (26.1 F)
1949	n/a
1950	n/a
1951	n/a
1952	-2.2 C (28.0 F)
1953	-2.8 C (27.0 F)
1954	-3.9 C (25.0 F)
1955	-10.0 C (14.0 F)
1956	-7.8 C (18.0 F)
1957	-7.2 C (19.0 F)
1958	-2.2 C (28.0 F)
1959	-7.8 C (18.0 F)
1960	-3.9 C (25.0 F)
1961	-3.3 C (26.1 F)
1962	-8.9 C (16.0 F)
1963	-7.2 C (19.0 F)
1964	-11.7 C (10.9 F)
1965	-3.3 C (26.1 F)
1966	-3.3 C (26.1 F)
1967	-4.4 C (24.1 F)
1968	-9.4 C (15.1 F)
1969	-7.2 C (19.0 F)
1970	-3.9 C (25.0 F)
1971	-5.0 C (23.0 F)
1972	-11.1 C (12.0 F)
1973	-9.4 C (15.1 F)
1974	-7.8 C (18.0 F)
1975	-3.3 C (26.1 F)
1976	-2.2 C (28.0 F)
1977	-6.7 C (19.9 F)
1978	-8.3 C (17.1 F)
1979	-8.9 C (16.0 F)

Wettest day (Rx1day)

The wettest day of the year at Point Grenville, 1947 to 1979. The record is 164.8 mm (6.5 in) in 1959, marked on the chart; the median year is 70.1 mm (2.8 in).

Wettest day (Rx1day) at Point Grenville by year
Year	Wettest day (Rx1day)
1947	38.4 mm (1.5 in)
1948	75.2 mm (3.0 in)
1949	88.9 mm (3.5 in)
1950	63.5 mm (2.5 in)
1951	62.2 mm (2.4 in)
1952	45.5 mm (1.8 in)
1953	95.3 mm (3.8 in)
1954	69.9 mm (2.8 in)
1955	95.3 mm (3.8 in)
1956	78.7 mm (3.1 in)
1957	51.6 mm (2.0 in)
1958	91.9 mm (3.6 in)
1959	164.8 mm (6.5 in)
1960	100.6 mm (4.0 in)
1961	86.9 mm (3.4 in)
1962	81.3 mm (3.2 in)
1963	83.6 mm (3.3 in)
1964	61.0 mm (2.4 in)
1965	76.2 mm (3.0 in)
1966	73.9 mm (2.9 in)
1967	132.1 mm (5.2 in)
1968	51.6 mm (2.0 in)
1969	53.3 mm (2.1 in)
1970	50.8 mm (2.0 in)
1971	53.3 mm (2.1 in)
1972	53.3 mm (2.1 in)
1973	78.7 mm (3.1 in)
1974	66.0 mm (2.6 in)
1975	71.1 mm (2.8 in)
1976	70.1 mm (2.8 in)
1977	49.5 mm (1.9 in)
1978	61.0 mm (2.4 in)
1979	61.0 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Point Grenville, 1947 to 1979. The record is 320.2 mm (12.6 in) in 1959, marked on the chart; the median year is 158.9 mm (6.3 in).

Wettest five days (Rx5day) at Point Grenville by year
Year	Wettest five days (Rx5day)
1947	127.3 mm (5.0 in)
1948	116.8 mm (4.6 in)
1949	181.7 mm (7.2 in)
1950	143.3 mm (5.6 in)
1951	147.8 mm (5.8 in)
1952	145.8 mm (5.7 in)
1953	201.2 mm (7.9 in)
1954	197.0 mm (7.8 in)
1955	204.6 mm (8.1 in)
1956	158.9 mm (6.3 in)
1957	147.9 mm (5.8 in)
1958	177.7 mm (7.0 in)
1959	320.2 mm (12.6 in)
1960	146.7 mm (5.8 in)
1961	268.0 mm (10.6 in)
1962	143.0 mm (5.6 in)
1963	204.5 mm (8.1 in)
1964	131.5 mm (5.2 in)
1965	165.1 mm (6.5 in)
1966	181.8 mm (7.2 in)
1967	235.7 mm (9.3 in)
1968	151.0 mm (5.9 in)
1969	132.7 mm (5.2 in)
1970	150.5 mm (5.9 in)
1971	147.4 mm (5.8 in)
1972	155.7 mm (6.1 in)
1973	225.1 mm (8.9 in)
1974	165.1 mm (6.5 in)
1975	172.5 mm (6.8 in)
1976	260.0 mm (10.2 in)
1977	144.3 mm (5.7 in)
1978	129.8 mm (5.1 in)
1979	182.4 mm (7.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Point Grenville, 1947 to 1979. The record is 54 days in 1978, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Point Grenville by year
Year	Longest dry spell (CDD)
1947	17 days
1948	14 days
1949	20 days
1950	26 days
1951	49 days
1952	21 days
1953	18 days
1954	13 days
1955	23 days
1956	26 days
1957	18 days
1958	24 days
1959	16 days
1960	39 days
1961	22 days
1962	20 days
1963	20 days
1964	11 days
1965	21 days
1966	16 days
1967	21 days
1968	29 days
1969	25 days
1970	23 days
1971	22 days
1972	30 days
1973	25 days
1974	29 days
1975	24 days
1976	15 days
1977	15 days
1978	54 days
1979	36 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.

Download the Data

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