Roseworthy AWS Weather Records (ASN00023122)

Record envelope, standing records and threshold days for Roseworthy AWS (ASN00023122), Australia, with 30 years of record.

Key Facts for Roseworthy AWS

Roseworthy AWS (ASN00023122) is a weather station in Australia at -34.51 latitude and 138.68 longitude, 65 m (213 ft) above sea level.
The station reports from 1997 to 2026, 30 years of record.
1,464 records set at Roseworthy AWS still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Australia, -34.51 latitude, 138.68 longitude.
Elevation: 65 m (213 ft).
Period of record: 1997 to 2026, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

16 days at or beyond a record

The band shows the record high and record low for each calendar day at Roseworthy AWS. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Roseworthy AWS, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	48.3 C (118.9 F)	4.3 C (39.7 F)	47.1 C (116.8 F)	6.6 C (43.9 F)
Feb	46.6 C (115.9 F)	4.0 C (39.2 F)	39.2 C (102.6 F)	7.7 C (45.9 F)
Mar	43.4 C (110.1 F)	3.3 C (37.9 F)	36.1 C (97.0 F)	5.3 C (41.5 F)
Apr	38.9 C (102.0 F)	1.0 C (33.8 F)	32.4 C (90.3 F)	7.2 C (45.0 F)
May	31.9 C (89.4 F)	-1.5 C (29.3 F)	31.1 C (88.0 F)	6.4 C (43.5 F)
Jun	27.1 C (80.8 F)	-3.1 C (26.4 F)	22.3 C (72.1 F)	1.9 C (35.4 F)
Jul	24.7 C (76.5 F)	-2.6 C (27.3 F)	20.8 C (69.4 F)	0.2 C (32.4 F)
Aug	30.2 C (86.4 F)	-3.6 C (25.5 F)	21.4 C (70.5 F)	0.8 C (33.4 F)
Sep	34.4 C (93.9 F)	-2.4 C (27.7 F)	35.9 C (96.6 F)	-0.2 C (31.6 F)
Oct	42.4 C (108.3 F)	-1.3 C (29.7 F)	24.1 C (75.4 F)	12.9 C (55.2 F)
Nov	44.9 C (112.8 F)	0.3 C (32.5 F)	n/a	n/a
Dec	47.6 C (117.7 F)	3.5 C (38.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Roseworthy AWS still stand. 2019 holds the most, with 78.

Standing records at Roseworthy AWS by the year they were set
Year set	Standing records
1997	10
1998	44
1999	58
2000	44
2001	53
2002	68
2003	34
2004	55
2005	55
2006	64
2007	43
2008	47
2009	66
2010	43
2011	40
2012	53
2013	54
2014	57
2015	48
2016	44
2017	37
2018	62
2019	78
2020	62
2021	48
2022	24
2023	45
2024	60
2025	40
2026	28

Wettest Day of Each Month

Apr: 58.6 mm (2.3 in)

The wettest day on record for each calendar month at Roseworthy AWS. The most was 58.6 mm (2.3 in) on 21 April 2017.

Record daily precipitation for each month at Roseworthy AWS
Month	Record daily precipitation (mm)	Date
Jan	26.2 mm (1.0 in)	14 January 1998
Feb	41.6 mm (1.6 in)	15 February 2014
Mar	35.8 mm (1.4 in)	8 March 2011
Apr	58.6 mm (2.3 in)	21 April 2017
May	46.0 mm (1.8 in)	30 May 2022
Jun	33.0 mm (1.3 in)	12 June 2019
Jul	33.2 mm (1.3 in)	5 July 2016
Aug	25.2 mm (1.0 in)	10 August 2026
Sep	38.2 mm (1.5 in)	4 September 2010
Oct	57.0 mm (2.2 in)	31 October 1997
Nov	31.8 mm (1.3 in)	1 November 2022
Dec	36.2 mm (1.4 in)	28 December 2016

Period of Record Coverage

1997 to 2026

30 years of record at Roseworthy AWS, 1997 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1997, 1998, 2003, 2004, 2026.

Days with data per year at Roseworthy AWS
Year	Days with data	Share of year	Complete
1997	139	38%	No
1998	307	84%	No
1999	336	92%	Yes
2000	351	96%	Yes
2001	351	96%	Yes
2002	350	96%	Yes
2003	311	85%	No
2004	294	80%	No
2005	347	95%	Yes
2006	354	97%	Yes
2007	348	95%	Yes
2008	344	94%	Yes
2009	351	96%	Yes
2010	361	99%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	363	99%	Yes
2015	363	99%	Yes
2016	366	100%	Yes
2017	354	97%	Yes
2018	363	99%	Yes
2019	365	100%	Yes
2020	363	99%	Yes
2021	356	98%	Yes
2022	355	97%	Yes
2023	360	99%	Yes
2024	366	100%	Yes
2025	365	100%	Yes
2026	273	75%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

24 complete years, 1999 to 2025

One stripe for each of 24 complete years at Roseworthy AWS, 1999 to 2025. Blue stripes are years cooler than the station's own mean of 16.8 C (62.2 F); red stripes are warmer. The coolest year was 2021, at 16.2 C (61.2 F), and the warmest was 2007, at 17.4 C (63.3 F). The strongest colour marks a difference of 0.6 C (1.1 F).

Annual mean temperature at Roseworthy AWS as warming stripes, 1999 to 2025
Year	Annual mean temperature	Difference from the station mean
1999	16.6 C	-0.17 C
2000	16.9 C	+0.10 C
2001	16.3 C	-0.46 C
2005	16.5 C	-0.29 C
2006	16.5 C	-0.24 C
2007	17.4 C	+0.59 C
2008	16.6 C	-0.18 C
2009	17.3 C	+0.53 C
2010	16.6 C	-0.19 C
2011	16.6 C	-0.20 C
2012	16.5 C	-0.24 C
2013	17.2 C	+0.43 C
2014	17.2 C	+0.38 C
2015	16.8 C	+0.05 C
2016	16.6 C	-0.16 C
2017	16.9 C	+0.09 C
2018	17.2 C	+0.46 C
2019	17.0 C	+0.26 C
2020	16.3 C	-0.44 C
2021	16.2 C	-0.58 C
2022	16.3 C	-0.52 C
2023	16.6 C	-0.14 C
2024	17.2 C	+0.41 C
2025	17.2 C	+0.39 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

1997 to 2026

Yearly extremes at Roseworthy AWS: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.3 C (118.9 F)	2019	44.7 C (112.5 F)	30
Coldest night (TNn)	-3.6 C (25.5 F)	2020	-1.0 C (30.2 F)	30
Wettest day (Rx1day)	58.6 mm (2.3 in)	2017	28.7 mm (1.1 in)	30
Wettest five days (Rx5day)	84.0 mm (3.3 in)	1997	45.8 mm (1.8 in)	30
Longest dry spell (CDD)	62 days	2002	32 days	30

Hottest day (TXx)

The hottest day of the year at Roseworthy AWS, 1997 to 2026. The record is 48.3 C (118.9 F) in 2019, marked on the chart; the median year is 44.7 C (112.5 F).

Hottest day (TXx) at Roseworthy AWS by year
Year	Hottest day (TXx)
1997	44.0 C (111.2 F)
1998	43.0 C (109.4 F)
1999	44.0 C (111.2 F)
2000	43.0 C (109.4 F)
2001	45.9 C (114.6 F)
2002	43.1 C (109.6 F)
2003	45.7 C (114.3 F)
2004	46.1 C (115.0 F)
2005	44.8 C (112.6 F)
2006	45.4 C (113.7 F)
2007	43.8 C (110.8 F)
2008	44.4 C (111.9 F)
2009	46.7 C (116.1 F)
2010	45.1 C (113.2 F)
2011	43.9 C (111.0 F)
2012	44.3 C (111.7 F)
2013	46.0 C (114.8 F)
2014	46.4 C (115.5 F)
2015	44.7 C (112.5 F)
2016	41.7 C (107.1 F)
2017	43.2 C (109.8 F)
2018	45.8 C (114.4 F)
2019	48.3 C (118.9 F)
2020	45.3 C (113.5 F)
2021	44.8 C (112.6 F)
2022	41.0 C (105.8 F)
2023	43.3 C (109.9 F)
2024	43.4 C (110.1 F)
2025	44.7 C (112.5 F)
2026	47.1 C (116.8 F)

Coldest night (TNn)

The coldest night of the year at Roseworthy AWS, 1997 to 2026. The record is -3.6 C (25.5 F) in 2020, marked on the chart; the median year is -1.0 C (30.2 F).

Coldest night (TNn) at Roseworthy AWS by year
Year	Coldest night (TNn)
1997	0.0 C (32.0 F)
1998	0.0 C (32.0 F)
1999	-1.0 C (30.2 F)
2000	-0.1 C (31.8 F)
2001	-0.1 C (31.8 F)
2002	-3.2 C (26.2 F)
2003	-0.2 C (31.6 F)
2004	-0.2 C (31.6 F)
2005	-0.2 C (31.6 F)
2006	-1.7 C (28.9 F)
2007	-3.1 C (26.4 F)
2008	-1.6 C (29.1 F)
2009	-0.8 C (30.6 F)
2010	-0.2 C (31.6 F)
2011	-2.2 C (28.0 F)
2012	-0.9 C (30.4 F)
2013	1.0 C (33.8 F)
2014	-1.3 C (29.7 F)
2015	-1.0 C (30.2 F)
2016	-0.5 C (31.1 F)
2017	-1.2 C (29.8 F)
2018	-1.8 C (28.8 F)
2019	-2.1 C (28.2 F)
2020	-3.6 C (25.5 F)
2021	-0.5 C (31.1 F)
2022	-1.9 C (28.6 F)
2023	-1.2 C (29.8 F)
2024	-2.1 C (28.2 F)
2025	-1.5 C (29.3 F)
2026	-0.2 C (31.6 F)

Wettest day (Rx1day)

The wettest day of the year at Roseworthy AWS, 1997 to 2026. The record is 58.6 mm (2.3 in) in 2017, marked on the chart; the median year is 28.7 mm (1.1 in).

Wettest day (Rx1day) at Roseworthy AWS by year
Year	Wettest day (Rx1day)
1997	57.0 mm (2.2 in)
1998	29.0 mm (1.1 in)
1999	17.0 mm (0.7 in)
2000	17.4 mm (0.7 in)
2001	30.0 mm (1.2 in)
2002	28.4 mm (1.1 in)
2003	34.4 mm (1.4 in)
2004	12.7 mm (0.5 in)
2005	29.8 mm (1.2 in)
2006	34.0 mm (1.3 in)
2007	26.0 mm (1.0 in)
2008	26.6 mm (1.0 in)
2009	14.6 mm (0.6 in)
2010	38.2 mm (1.5 in)
2011	35.8 mm (1.4 in)
2012	32.6 mm (1.3 in)
2013	27.6 mm (1.1 in)
2014	41.6 mm (1.6 in)
2015	21.2 mm (0.8 in)
2016	36.2 mm (1.4 in)
2017	58.6 mm (2.3 in)
2018	13.6 mm (0.5 in)
2019	33.0 mm (1.3 in)
2020	21.4 mm (0.8 in)
2021	27.6 mm (1.1 in)
2022	46.0 mm (1.8 in)
2023	28.4 mm (1.1 in)
2024	15.6 mm (0.6 in)
2025	32.4 mm (1.3 in)
2026	25.2 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Roseworthy AWS, 1997 to 2026. The record is 84.0 mm (3.3 in) in 1997, marked on the chart; the median year is 45.8 mm (1.8 in).

Wettest five days (Rx5day) at Roseworthy AWS by year
Year	Wettest five days (Rx5day)
1997	84.0 mm (3.3 in)
1998	43.2 mm (1.7 in)
1999	25.2 mm (1.0 in)
2000	38.6 mm (1.5 in)
2001	37.1 mm (1.5 in)
2002	28.4 mm (1.1 in)
2003	56.4 mm (2.2 in)
2004	35.4 mm (1.4 in)
2005	53.2 mm (2.1 in)
2006	40.8 mm (1.6 in)
2007	76.8 mm (3.0 in)
2008	46.2 mm (1.8 in)
2009	45.8 mm (1.8 in)
2010	56.2 mm (2.2 in)
2011	50.6 mm (2.0 in)
2012	41.6 mm (1.6 in)
2013	35.8 mm (1.4 in)
2014	70.8 mm (2.8 in)
2015	36.2 mm (1.4 in)
2016	49.4 mm (1.9 in)
2017	66.8 mm (2.6 in)
2018	33.0 mm (1.3 in)
2019	34.8 mm (1.4 in)
2020	41.6 mm (1.6 in)
2021	46.2 mm (1.8 in)
2022	61.2 mm (2.4 in)
2023	55.0 mm (2.2 in)
2024	22.8 mm (0.9 in)
2025	45.8 mm (1.8 in)
2026	48.0 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Roseworthy AWS, 1997 to 2026. The record is 62 days in 2002, marked on the chart; the median year is 32 days.

Longest dry spell (CDD) at Roseworthy AWS by year
Year	Longest dry spell (CDD)
1997	21 days
1998	32 days
1999	59 days
2000	41 days
2001	24 days
2002	62 days
2003	31 days
2004	27 days
2005	29 days
2006	34 days
2007	31 days
2008	41 days
2009	40 days
2010	36 days
2011	21 days
2012	27 days
2013	22 days
2014	30 days
2015	50 days
2016	32 days
2017	26 days
2018	25 days
2019	48 days
2020	26 days
2021	24 days
2022	27 days
2023	47 days
2024	46 days
2025	38 days
2026	58 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Roseworthy AWS falls on 26 September and the median first autumn frost on 18 July, which leaves a median of 303 days between them.

Frost dates and growing season at Roseworthy AWS
Measure	Median, all years	Earliest period	Recent period (1999 to 2024)	Recent against earliest	Fitted trend
Last spring frost	26 September	n/a	26 September	n/a	n/a
First autumn frost	18 July	n/a	18 July	n/a	n/a
Growing days	303 days	n/a	303 days	n/a	n/a

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.

Download the Data

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