Penfield Weapons Research Weather Records (ASN00023015)

Record envelope, standing records and threshold days for Penfield Weapons Research (ASN00023015), Australia, with 41 years of record.

Key Facts for Penfield Weapons Research

Penfield Weapons Research (ASN00023015) is a weather station in Australia at -34.73 latitude and 138.65 longitude, 24 m (79 ft) above sea level.
The station reports from 1939 to 1979, 41 years of record.
1,464 records set at Penfield Weapons Research still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Penfield Weapons Research set a daily record precipitation of 9.2 mm (0.36 in) on 3 April 1979.

About the Station

Location: Australia, -34.73 latitude, 138.65 longitude.
Elevation: 24 m (79 ft).
Period of record: 1939 to 1979, 41 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 Penfield Weapons Research. 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 Penfield Weapons Research, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	46.1 C (115.0 F)	5.0 C (41.0 F)	n/a	n/a
Feb	42.3 C (108.1 F)	7.7 C (45.9 F)	n/a	n/a
Mar	39.9 C (103.8 F)	5.0 C (41.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	4.2 C (39.6 F)	n/a	n/a
May	29.5 C (85.1 F)	1.0 C (33.8 F)	n/a	n/a
Jun	27.7 C (81.9 F)	-2.5 C (27.5 F)	n/a	n/a
Jul	26.2 C (79.2 F)	-1.7 C (28.9 F)	n/a	n/a
Aug	28.8 C (83.8 F)	-0.8 C (30.6 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	36.2 C (97.2 F)	1.6 C (34.9 F)	n/a	n/a
Nov	44.1 C (111.4 F)	2.0 C (35.6 F)	n/a	n/a
Dec	42.5 C (108.5 F)	-0.6 C (30.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Penfield Weapons Research still stand. 1957 holds the most, with 90.

Standing records at Penfield Weapons Research by the year they were set
Year set	Standing records
1957	90
1958	82
1959	78
1960	81
1961	65
1962	55
1963	68
1964	80
1965	59
1966	53
1967	64
1968	85
1969	65
1970	60
1971	43
1972	49
1973	66
1974	50
1975	75
1976	51
1977	68
1978	63
1979	14

Wettest Day of Each Month

Feb: 74.2 mm (2.9 in)

The wettest day on record for each calendar month at Penfield Weapons Research. The most was 74.2 mm (2.9 in) on 9 February 1969.

Record daily precipitation for each month at Penfield Weapons Research
Month	Record daily precipitation (mm)	Date
Jan	39.0 mm (1.5 in)	17 January 1979
Feb	74.2 mm (2.9 in)	9 February 1969
Mar	23.9 mm (0.9 in)	31 March 1959
Apr	50.5 mm (2.0 in)	14 April 1954
May	35.1 mm (1.4 in)	15 May 1958
Jun	36.1 mm (1.4 in)	21 June 1957
Jul	27.7 mm (1.1 in)	21 July 1969
Aug	25.8 mm (1.0 in)	7 August 1978
Sep	29.4 mm (1.2 in)	22 September 1978
Oct	39.0 mm (1.5 in)	16 October 1974
Nov	62.7 mm (2.5 in)	18 November 1964
Dec	70.9 mm (2.8 in)	4 December 1966

Period of Record Coverage

1957 to 1979

23 years of record at Penfield Weapons Research, 1957 to 1979. 1 years have data for under 90 percent of days and are left out of rankings: 1979.

Days with data per year at Penfield Weapons Research
Year	Days with data	Share of year	Complete
1957	333	91%	Yes
1958	365	100%	Yes
1959	361	99%	Yes
1960	361	99%	Yes
1961	362	99%	Yes
1962	363	99%	Yes
1963	351	96%	Yes
1964	349	95%	Yes
1965	349	96%	Yes
1966	331	91%	Yes
1967	349	96%	Yes
1968	353	96%	Yes
1969	343	94%	Yes
1970	338	93%	Yes
1971	337	92%	Yes
1972	339	93%	Yes
1973	350	96%	Yes
1974	363	99%	Yes
1975	364	100%	Yes
1976	363	99%	Yes
1977	363	99%	Yes
1978	365	100%	Yes
1979	120	33%	No

Latest Records

Latest records at Penfield Weapons Research
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 April 1979	Penfield Weapons Research, AU	daily rain	9.2 mm (0.36 in)	4.6 mm (0.18 in)	29 years	18 of 100 (Routine)
2 March 1979	Penfield Weapons Research, AU	daily rain (Tie)	1.0 mm (0.04 in)	tie	16 years	2 of 100 (Routine)
25 February 1979	Penfield Weapons Research, AU	daily rain	8.0 mm (0.31 in)	2.9 mm (0.11 in)	12 years	8 of 100 (Routine)
23 February 1979	Penfield Weapons Research, AU	daily rain (Tie)	8.1 mm (0.32 in)	tie	12 years	1 of 100 (Routine)
17 January 1979	Penfield Weapons Research, AU	monthly rain	39.0 mm (1.5 in)	7.2 mm (0.28 in)	26 years	32 of 100 (Routine)

Climate Trend

19 complete years, 1958 to 1978

One stripe for each of 19 complete years at Penfield Weapons Research, 1958 to 1978. Blue stripes are years cooler than the station's own mean of 16.7 C (62.1 F); red stripes are warmer. The coolest year was 1964, at 15.9 C (60.5 F), and the warmest was 1961, at 17.3 C (63.1 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Penfield Weapons Research as warming stripes, 1958 to 1978
Year	Annual mean temperature	Difference from the station mean
1958	16.2 C	-0.55 C
1959	16.9 C	+0.22 C
1960	16.0 C	-0.75 C
1961	17.3 C	+0.56 C
1962	16.9 C	+0.20 C
1963	16.7 C	-0.02 C
1964	15.9 C	-0.84 C
1965	16.9 C	+0.21 C
1967	17.2 C	+0.50 C
1968	16.8 C	+0.13 C
1969	16.5 C	-0.19 C
1970	16.5 C	-0.25 C
1971	16.8 C	+0.11 C
1972	17.1 C	+0.42 C
1974	16.7 C	+0.04 C
1975	17.0 C	+0.30 C
1976	16.7 C	-0.02 C
1977	17.1 C	+0.35 C
1978	16.4 C	-0.34 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

1939 to 1979

Yearly extremes at Penfield Weapons Research: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1959	41.7 C (107.1 F)	23
Coldest night (TNn)	-2.5 C (27.5 F)	1964	0.1 C (32.2 F)	24
Wettest day (Rx1day)	74.2 mm (2.9 in)	1969	29.7 mm (1.2 in)	32
Wettest five days (Rx5day)	120.8 mm (4.8 in)	1974	45.0 mm (1.8 in)	32
Longest dry spell (CDD)	71 days	1963	34 days	32

Hottest day (TXx)

The hottest day of the year at Penfield Weapons Research, 1939 to 1979. The record is 46.1 C (115.0 F) in 1959, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Penfield Weapons Research by year
Year	Hottest day (TXx)
1939	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	41.7 C (107.1 F)
1958	39.7 C (103.5 F)
1959	46.1 C (115.0 F)
1960	43.9 C (111.0 F)
1961	41.7 C (107.1 F)
1962	44.1 C (111.4 F)
1963	40.6 C (105.1 F)
1964	41.4 C (106.5 F)
1965	41.6 C (106.9 F)
1966	40.6 C (105.1 F)
1967	41.7 C (107.1 F)
1968	45.3 C (113.5 F)
1969	42.1 C (107.8 F)
1970	42.3 C (108.1 F)
1971	41.1 C (106.0 F)
1972	40.8 C (105.4 F)
1973	41.8 C (107.2 F)
1974	38.3 C (100.9 F)
1975	42.5 C (108.5 F)
1976	41.9 C (107.4 F)
1977	40.8 C (105.4 F)
1978	40.2 C (104.4 F)
1979	42.5 C (108.5 F)

Coldest night (TNn)

The coldest night of the year at Penfield Weapons Research, 1939 to 1979. The record is -2.5 C (27.5 F) in 1964, marked on the chart; the median year is 0.1 C (32.2 F).

Coldest night (TNn) at Penfield Weapons Research by year
Year	Coldest night (TNn)
1939	14.1 C (57.4 F)
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	0.6 C (33.1 F)
1958	-2.2 C (28.0 F)
1959	0.3 C (32.5 F)
1960	-0.3 C (31.5 F)
1961	0.6 C (33.1 F)
1962	1.1 C (34.0 F)
1963	-0.3 C (31.5 F)
1964	-2.5 C (27.5 F)
1965	-1.6 C (29.1 F)
1966	-1.1 C (30.0 F)
1967	0.8 C (33.4 F)
1968	-1.1 C (30.0 F)
1969	-0.8 C (30.6 F)
1970	-0.3 C (31.5 F)
1971	1.7 C (35.1 F)
1972	-1.7 C (28.9 F)
1973	1.0 C (33.8 F)
1974	1.0 C (33.8 F)
1975	-0.1 C (31.8 F)
1976	1.0 C (33.8 F)
1977	1.0 C (33.8 F)
1978	-1.5 C (29.3 F)
1979	4.4 C (39.9 F)

Wettest day (Rx1day)

The wettest day of the year at Penfield Weapons Research, 1939 to 1979. The record is 74.2 mm (2.9 in) in 1969, marked on the chart; the median year is 29.7 mm (1.2 in).

Wettest day (Rx1day) at Penfield Weapons Research by year
Year	Wettest day (Rx1day)
1939	n/a
1948	12.7 mm (0.5 in)
1949	33.8 mm (1.3 in)
1950	19.3 mm (0.8 in)
1951	19.1 mm (0.8 in)
1952	31.8 mm (1.3 in)
1953	39.6 mm (1.6 in)
1954	50.5 mm (2.0 in)
1955	24.4 mm (1.0 in)
1956	23.6 mm (0.9 in)
1957	36.1 mm (1.4 in)
1958	35.1 mm (1.4 in)
1959	23.9 mm (0.9 in)
1960	33.5 mm (1.3 in)
1961	25.9 mm (1.0 in)
1962	23.6 mm (0.9 in)
1963	31.0 mm (1.2 in)
1964	62.7 mm (2.5 in)
1965	15.2 mm (0.6 in)
1966	70.9 mm (2.8 in)
1967	15.5 mm (0.6 in)
1968	40.4 mm (1.6 in)
1969	74.2 mm (2.9 in)
1970	21.3 mm (0.8 in)
1971	30.0 mm (1.2 in)
1972	19.8 mm (0.8 in)
1973	42.2 mm (1.7 in)
1974	72.8 mm (2.9 in)
1975	26.0 mm (1.0 in)
1976	21.8 mm (0.9 in)
1977	27.0 mm (1.1 in)
1978	29.4 mm (1.2 in)
1979	39.0 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Penfield Weapons Research, 1939 to 1979. The record is 120.8 mm (4.8 in) in 1974, marked on the chart; the median year is 45.0 mm (1.8 in).

Wettest five days (Rx5day) at Penfield Weapons Research by year
Year	Wettest five days (Rx5day)
1939	n/a
1948	15.2 mm (0.6 in)
1949	62.6 mm (2.5 in)
1950	34.5 mm (1.4 in)
1951	44.7 mm (1.8 in)
1952	42.0 mm (1.7 in)
1953	45.2 mm (1.8 in)
1954	63.9 mm (2.5 in)
1955	40.6 mm (1.6 in)
1956	47.7 mm (1.9 in)
1957	44.6 mm (1.8 in)
1958	59.6 mm (2.3 in)
1959	35.4 mm (1.4 in)
1960	49.8 mm (2.0 in)
1961	44.7 mm (1.8 in)
1962	66.8 mm (2.6 in)
1963	54.3 mm (2.1 in)
1964	68.8 mm (2.7 in)
1965	30.7 mm (1.2 in)
1966	99.4 mm (3.9 in)
1967	25.4 mm (1.0 in)
1968	43.4 mm (1.7 in)
1969	76.6 mm (3.0 in)
1970	35.3 mm (1.4 in)
1971	68.1 mm (2.7 in)
1972	34.5 mm (1.4 in)
1973	68.9 mm (2.7 in)
1974	120.8 mm (4.8 in)
1975	36.4 mm (1.4 in)
1976	21.9 mm (0.9 in)
1977	53.0 mm (2.1 in)
1978	44.5 mm (1.8 in)
1979	55.6 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Penfield Weapons Research, 1939 to 1979. The record is 71 days in 1963, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Penfield Weapons Research by year
Year	Longest dry spell (CDD)
1939	n/a
1948	17 days
1949	33 days
1950	59 days
1951	39 days
1952	25 days
1953	40 days
1954	52 days
1955	26 days
1956	27 days
1957	67 days
1958	29 days
1959	45 days
1960	37 days
1961	35 days
1962	32 days
1963	71 days
1964	23 days
1965	43 days
1966	27 days
1967	62 days
1968	29 days
1969	41 days
1970	53 days
1971	32 days
1972	37 days
1973	15 days
1974	35 days
1975	36 days
1976	27 days
1977	27 days
1978	31 days
1979	21 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

30 years, 1949 to 1978

A day with at least 29.3 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 105.0 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Penfield Weapons Research: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.3 mm (1.2 in)
5 years	43.0 mm (1.7 in)
10 years	54.2 mm (2.1 in)
25 years	71.5 mm (2.8 in)
50 years	87.0 mm (3.4 in)	Longer than the 30 years of record
100 years	105.0 mm (4.1 in)	Longer than the 30 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, 30 years of values from 1949 to 1978.

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: 74.2 mm (2.9 in) in 1969; 72.8 mm (2.9 in) in 1974; 70.9 mm (2.8 in) in 1966.

Download the Data

Data for Penfield Weapons Research standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Penfield Weapons Research 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).