Phila 1 WSW Weather Records (USC00226894)

Record envelope, standing records and threshold days for Phila 1 WSW (USC00226894), Mississippi, United States, with 75 years of record.

Key Facts for Phila 1 WSW

Phila 1 WSW (USC00226894) is a weather station in Mississippi, United States at 32.77 latitude and -89.13 longitude, 126 m (413 ft) above sea level.
The station reports from 1949 to 2023, 75 years of record.
1,464 records set at Phila 1 WSW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Phila 1 WSW set a daily record high maximum temperature of 28.3 C (82.9 F) on 23 February 2023.

About the Station

Location: Mississippi, United States, 32.77 latitude, -89.13 longitude.
Elevation: 126 m (413 ft).
Period of record: 1949 to 2023, 75 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 Phila 1 WSW. 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 Phila 1 WSW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.8 C (82.0 F)	-19.4 C (-2.9 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-17.8 C (0.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-10.0 C (14.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-2.8 C (27.0 F)	n/a	n/a
May	37.8 C (100.0 F)	2.8 C (37.0 F)	n/a	n/a
Jun	39.4 C (102.9 F)	5.6 C (42.1 F)	n/a	n/a
Jul	39.4 C (102.9 F)	11.1 C (52.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	7.8 C (46.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	1.7 C (35.1 F)	n/a	n/a
Oct	36.7 C (98.1 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-11.7 C (10.9 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-17.8 C (0.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Phila 1 WSW still stand. 1954 holds the most, with 44.

Standing records at Phila 1 WSW by the year they were set
Year set	Standing records
1949	5
1950	35
1951	38
1952	35
1953	30
1954	44
1955	28
1956	21
1957	23
1958	18
1959	8
1960	29
1961	18
1962	22
1963	37
1964	18
1965	18
1966	15
1967	34
1968	18
1969	19
1970	14
1971	20
1972	20
1973	20
1974	32
1975	15
1976	16
1977	17
1978	16
1979	11
1980	30
1981	22
1982	24
1983	23
1984	20
1985	16
1986	13
1987	13
1988	22
1989	28
1990	16
1991	19
1992	10
1993	19
1994	7
1995	10
1996	24
1997	11
1998	24
1999	19
2000	39
2001	12
2002	19
2003	17
2004	16
2005	17
2006	26
2007	29
2008	9
2009	5
2010	12
2011	19
2012	8
2013	16
2014	16
2015	32
2016	19
2017	26
2018	18
2019	10
2020	12
2021	12
2022	9
2023	2

All-Time Record Progression

5 new records

5 all-time records were set at Phila 1 WSW between 16 July 1980 and 22 August 2016. Each dot is a new record.

When Phila 1 WSW set new all-time records
Date	Kind	Detail
1980-07-16	Record high minimum temperature	Record high minimum temperature 26.1 C (79.0 F)
2000-08-30	Record high maximum temperature	Record high maximum temperature 41.1 C (106.0 F)
2003-04-25	Record daily precipitation	Record daily precipitation 179.1 mm (7.1 in)
2005-08-30	Record daily precipitation	Record daily precipitation 211.1 mm (8.3 in)
2016-08-22	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)

Wettest Day of Each Month

Aug: 211.1 mm (8.3 in)

The wettest day on record for each calendar month at Phila 1 WSW. The most was 211.1 mm (8.3 in) on 30 August 2005.

Record daily precipitation for each month at Phila 1 WSW
Month	Record daily precipitation (mm)	Date
Jan	158.8 mm (6.3 in)	6 January 1950
Feb	163.6 mm (6.4 in)	6 February 2004
Mar	138.9 mm (5.5 in)	5 March 1983
Apr	179.1 mm (7.1 in)	25 April 2003
May	129.5 mm (5.1 in)	22 May 1967
Jun	106.7 mm (4.2 in)	26 June 1961
Jul	155.4 mm (6.1 in)	14 July 2019
Aug	211.1 mm (8.3 in)	30 August 2005
Sep	167.6 mm (6.6 in)	5 September 2011
Oct	130.8 mm (5.1 in)	17 October 2006
Nov	114.8 mm (4.5 in)	20 November 1988
Dec	142.7 mm (5.6 in)	23 December 1990

Period of Record Coverage

1949 to 2023

75 years of record at Phila 1 WSW, 1949 to 2023. 8 years have data for under 90 percent of days and are left out of rankings: 1949, 1951, 1952, 1956, 1985, 2019, 2020, 2023.

Days with data per year at Phila 1 WSW
Year	Days with data	Share of year	Complete
1949	269	74%	No
1950	347	95%	Yes
1951	328	90%	No
1952	283	77%	No
1953	358	98%	Yes
1954	353	97%	Yes
1955	359	98%	Yes
1956	328	90%	No
1957	357	98%	Yes
1958	364	100%	Yes
1959	364	100%	Yes
1960	363	99%	Yes
1961	365	100%	Yes
1962	358	98%	Yes
1963	361	99%	Yes
1964	363	99%	Yes
1965	355	97%	Yes
1966	357	98%	Yes
1967	356	98%	Yes
1968	360	98%	Yes
1969	360	99%	Yes
1970	359	98%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	364	100%	Yes
1976	361	99%	Yes
1977	362	99%	Yes
1978	360	99%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	360	99%	Yes
1982	364	100%	Yes
1983	363	99%	Yes
1984	365	100%	Yes
1985	299	82%	No
1986	362	99%	Yes
1987	363	99%	Yes
1988	365	100%	Yes
1989	362	99%	Yes
1990	337	92%	Yes
1991	331	91%	Yes
1992	359	98%	Yes
1993	358	98%	Yes
1994	355	97%	Yes
1995	360	99%	Yes
1996	359	98%	Yes
1997	361	99%	Yes
1998	361	99%	Yes
1999	360	99%	Yes
2000	364	99%	Yes
2001	364	100%	Yes
2002	364	100%	Yes
2003	362	99%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	363	99%	Yes
2014	357	98%	Yes
2015	363	99%	Yes
2016	360	98%	Yes
2017	363	99%	Yes
2018	338	93%	Yes
2019	324	89%	No
2020	323	88%	No
2021	354	97%	Yes
2022	365	100%	Yes
2023	51	14%	No

Latest Records

Latest records at Phila 1 WSW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 February 2023	Phila 1 WSW, US	daily high max	28.3 C (82.9 F)	0.5 C (0.9 F)	16 years	11 of 100 (Routine)
23 February 2023	Phila 1 WSW, US	daily high min (Tie)	18.3 C (64.9 F)	tie	4 years	2 of 100 (Routine)
17 February 2023	Phila 1 WSW, US	daily high min	17.8 C (64.0 F)	1.7 C (3.1 F)	67 years	29 of 100 (Routine)
19 January 2023	Phila 1 WSW, US	daily high max (Tie)	24.4 C (75.9 F)	tie	48 years	5 of 100 (Routine)
13 January 2023	Phila 1 WSW, US	daily rain	30.5 mm (1.2 in)	5.1 mm (0.20 in)	31 years	19 of 100 (Routine)
12 January 2023	Phila 1 WSW, US	daily high max (Tie)	24.4 C (75.9 F)	tie	32 years	4 of 100 (Routine)
3 January 2023	Phila 1 WSW, US	daily high max (Tie)	25.6 C (78.1 F)	tie	16 years	3 of 100 (Routine)
14 December 2022	Phila 1 WSW, US	daily rain	102.1 mm (4.0 in)	63.5 mm (2.5 in)	20 years	47 of 100 (Notable)
8 December 2022	Phila 1 WSW, US	daily high max (Tie)	27.8 C (82.0 F)	tie	44 years	5 of 100 (Routine)
6 December 2022	Phila 1 WSW, US	daily high max (Tie)	27.2 C (81.0 F)	tie	24 years	3 of 100 (Routine)
29 November 2022	Phila 1 WSW, US	daily rain	61.0 mm (2.4 in)	9.2 mm (0.36 in)	24 years	18 of 100 (Routine)
7 November 2022	Phila 1 WSW, US	daily high max	30.6 C (87.1 F)	1.7 C (3.1 F)	16 years	15 of 100 (Routine)
6 November 2022	Phila 1 WSW, US	daily high max	28.9 C (84.0 F)	0.6 C (1.1 F)	63 years	26 of 100 (Routine)
5 November 2022	Phila 1 WSW, US	daily rain	53.3 mm (2.1 in)	1.2 mm (0.05 in)	63 years	25 of 100 (Routine)
21 October 2022	Phila 1 WSW, US	daily low min (Tie)	-0.6 C (30.9 F)	tie	61 years	6 of 100 (Routine)
20 October 2022	Phila 1 WSW, US	daily low min	-1.1 C (30.0 F)	0.5 C (0.9 F)	57 years	24 of 100 (Routine)
19 October 2022	Phila 1 WSW, US	daily low min	-1.1 C (30.0 F)	0.5 C (0.9 F)	67 years	27 of 100 (Routine)
25 August 2022	Phila 1 WSW, US	daily low max (Tie)	26.7 C (80.1 F)	tie	17 years	3 of 100 (Routine)
23 August 2022	Phila 1 WSW, US	daily rain	127.0 mm (5.0 in)	87.6 mm (3.4 in)	29 years	55 of 100 (Notable)
20 August 2022	Phila 1 WSW, US	daily rain	29.7 mm (1.2 in)	8.9 mm (0.35 in)	53 years	27 of 100 (Routine)

Climate Trend

64 complete years, 1953 to 2022

One stripe for each of 64 complete years at Phila 1 WSW, 1953 to 2022. Blue stripes are years cooler than the station's own mean of 17.4 C (63.4 F); red stripes are warmer. The coolest year was 1983, at 15.9 C (60.6 F), and the warmest was 2007, at 19.0 C (66.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Phila 1 WSW as warming stripes, 1953 to 2022
Year	Annual mean temperature	Difference from the station mean
1953	18.0 C	+0.57 C
1955	17.4 C	0.00 C
1957	17.5 C	+0.03 C
1958	16.2 C	-1.22 C
1959	17.1 C	-0.29 C
1960	16.4 C	-1.06 C
1961	16.5 C	-0.92 C
1962	17.3 C	-0.11 C
1963	16.8 C	-0.61 C
1964	17.2 C	-0.27 C
1965	17.5 C	+0.07 C
1966	16.7 C	-0.75 C
1967	16.7 C	-0.70 C
1968	16.2 C	-1.23 C
1969	16.5 C	-0.97 C
1970	16.7 C	-0.70 C
1971	17.0 C	-0.40 C
1972	17.2 C	-0.22 C
1973	17.5 C	+0.06 C
1974	17.2 C	-0.21 C
1975	17.3 C	-0.13 C
1976	16.0 C	-1.39 C
1977	17.1 C	-0.28 C
1978	16.5 C	-0.94 C
1979	16.2 C	-1.19 C
1980	16.9 C	-0.48 C
1981	16.8 C	-0.65 C
1982	17.1 C	-0.31 C
1983	15.9 C	-1.52 C
1984	17.2 C	-0.21 C
1986	17.9 C	+0.46 C
1987	17.4 C	-0.02 C
1988	17.2 C	-0.27 C
1989	16.5 C	-0.91 C
1992	17.3 C	-0.17 C
1993	17.2 C	-0.26 C
1994	17.9 C	+0.44 C
1995	17.8 C	+0.34 C
1996	17.5 C	+0.10 C
1997	17.4 C	-0.07 C
1998	18.9 C	+1.52 C
1999	18.4 C	+0.96 C
2000	18.2 C	+0.82 C
2001	17.8 C	+0.38 C
2002	18.0 C	+0.57 C
2003	17.4 C	+0.02 C
2004	17.6 C	+0.17 C
2005	18.3 C	+0.90 C
2006	18.8 C	+1.37 C
2007	19.0 C	+1.57 C
2008	17.9 C	+0.45 C
2009	18.1 C	+0.69 C
2010	17.4 C	-0.06 C
2011	17.8 C	+0.36 C
2012	18.4 C	+0.99 C
2013	17.5 C	+0.11 C
2014	17.1 C	-0.37 C
2015	18.6 C	+1.16 C
2016	18.8 C	+1.39 C
2017	18.7 C	+1.29 C
2018	18.2 C	+0.77 C
2019	18.0 C	+0.58 C
2021	17.8 C	+0.35 C
2022	17.9 C	+0.47 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1953 to 2022. In Fahrenheit: 0.4 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Phila 1 WSW
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.2 to 0.3) per decade	0.4 F (0.3 to 0.6) per decade	1953 to 2022	64	Rise
Mean daily maximum	0.2 C (0.1 to 0.3) per decade	0.3 F (0.2 to 0.5) per decade	1953 to 2022	64	Rise
Mean daily minimum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.4 to 0.7) per decade	1953 to 2022	64	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

1949 to 2023

Yearly extremes at Phila 1 WSW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	2000	36.7 C (98.1 F)	75
Coldest night (TNn)	-19.4 C (-2.9 F)	1962	-11.1 C (12.0 F)	75
Wettest day (Rx1day)	211.1 mm (8.3 in)	2005	102.1 mm (4.0 in)	75
Wettest five days (Rx5day)	250.8 mm (9.9 in)	2022	145.5 mm (5.7 in)	75
Longest dry spell (CDD)	55 days	1993	22 days	75

Hottest day (TXx)

The hottest day of the year at Phila 1 WSW, 1949 to 2023. The record is 41.1 C (106.0 F) in 2000, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Phila 1 WSW by year
Year	Hottest day (TXx)
1949	37.2 C (99.0 F)
1950	35.6 C (96.1 F)
1951	39.4 C (102.9 F)
1952	39.4 C (102.9 F)
1953	38.9 C (102.0 F)
1954	39.4 C (102.9 F)
1955	36.7 C (98.1 F)
1956	38.3 C (100.9 F)
1957	36.1 C (97.0 F)
1958	35.6 C (96.1 F)
1959	35.6 C (96.1 F)
1960	38.3 C (100.9 F)
1961	35.0 C (95.0 F)
1962	38.3 C (100.9 F)
1963	39.4 C (102.9 F)
1964	36.7 C (98.1 F)
1965	35.6 C (96.1 F)
1966	38.3 C (100.9 F)
1967	35.0 C (95.0 F)
1968	35.0 C (95.0 F)
1969	37.8 C (100.0 F)
1970	37.8 C (100.0 F)
1971	37.2 C (99.0 F)
1972	37.2 C (99.0 F)
1973	35.0 C (95.0 F)
1974	34.4 C (93.9 F)
1975	35.0 C (95.0 F)
1976	36.7 C (98.1 F)
1977	37.8 C (100.0 F)
1978	36.7 C (98.1 F)
1979	36.1 C (97.0 F)
1980	38.9 C (102.0 F)
1981	38.3 C (100.9 F)
1982	35.6 C (96.1 F)
1983	37.8 C (100.0 F)
1984	36.7 C (98.1 F)
1985	37.2 C (99.0 F)
1986	38.9 C (102.0 F)
1987	36.7 C (98.1 F)
1988	38.9 C (102.0 F)
1989	36.1 C (97.0 F)
1990	38.9 C (102.0 F)
1991	36.1 C (97.0 F)
1992	35.6 C (96.1 F)
1993	36.7 C (98.1 F)
1994	35.0 C (95.0 F)
1995	37.8 C (100.0 F)
1996	36.1 C (97.0 F)
1997	35.6 C (96.1 F)
1998	37.2 C (99.0 F)
1999	39.4 C (102.9 F)
2000	41.1 C (106.0 F)
2001	36.1 C (97.0 F)
2002	37.8 C (100.0 F)
2003	35.0 C (95.0 F)
2004	36.1 C (97.0 F)
2005	37.8 C (100.0 F)
2006	38.9 C (102.0 F)
2007	40.6 C (105.1 F)
2008	38.3 C (100.9 F)
2009	37.2 C (99.0 F)
2010	38.3 C (100.9 F)
2011	37.2 C (99.0 F)
2012	37.8 C (100.0 F)
2013	35.0 C (95.0 F)
2014	35.6 C (96.1 F)
2015	37.8 C (100.0 F)
2016	36.7 C (98.1 F)
2017	36.1 C (97.0 F)
2018	35.6 C (96.1 F)
2019	36.7 C (98.1 F)
2020	35.0 C (95.0 F)
2021	35.0 C (95.0 F)
2022	38.3 C (100.9 F)
2023	28.3 C (82.9 F)

Coldest night (TNn)

The coldest night of the year at Phila 1 WSW, 1949 to 2023. The record is -19.4 C (-2.9 F) in 1962, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at Phila 1 WSW by year
Year	Coldest night (TNn)
1949	-7.2 C (19.0 F)
1950	-11.1 C (12.0 F)
1951	-17.8 C (0.0 F)
1952	-8.3 C (17.1 F)
1953	-11.1 C (12.0 F)
1954	-11.1 C (12.0 F)
1955	-11.1 C (12.0 F)
1956	-8.9 C (16.0 F)
1957	-11.7 C (10.9 F)
1958	-11.7 C (10.9 F)
1959	-11.7 C (10.9 F)
1960	-13.9 C (7.0 F)
1961	-11.7 C (10.9 F)
1962	-19.4 C (-2.9 F)
1963	-16.7 C (1.9 F)
1964	-12.8 C (9.0 F)
1965	-9.4 C (15.1 F)
1966	-15.0 C (5.0 F)
1967	-8.9 C (16.0 F)
1968	-11.1 C (12.0 F)
1969	-12.2 C (10.0 F)
1970	-15.0 C (5.0 F)
1971	-11.1 C (12.0 F)
1972	-11.7 C (10.9 F)
1973	-11.7 C (10.9 F)
1974	-7.8 C (18.0 F)
1975	-10.0 C (14.0 F)
1976	-11.1 C (12.0 F)
1977	-16.7 C (1.9 F)
1978	-8.9 C (16.0 F)
1979	-11.1 C (12.0 F)
1980	-10.0 C (14.0 F)
1981	-12.8 C (9.0 F)
1982	-17.2 C (1.0 F)
1983	-15.6 C (3.9 F)
1984	-11.7 C (10.9 F)
1985	-17.8 C (0.0 F)
1986	-9.4 C (15.1 F)
1987	-7.2 C (19.0 F)
1988	-10.6 C (12.9 F)
1989	-17.8 C (0.0 F)
1990	-6.7 C (19.9 F)
1991	-8.9 C (16.0 F)
1992	-7.8 C (18.0 F)
1993	-7.8 C (18.0 F)
1994	-11.1 C (12.0 F)
1995	-10.6 C (12.9 F)
1996	-15.0 C (5.0 F)
1997	-10.0 C (14.0 F)
1998	-6.7 C (19.9 F)
1999	-11.7 C (10.9 F)
2000	-11.1 C (12.0 F)
2001	-10.6 C (12.9 F)
2002	-8.9 C (16.0 F)
2003	-11.7 C (10.9 F)
2004	-7.2 C (19.0 F)
2005	-6.1 C (21.0 F)
2006	-7.8 C (18.0 F)
2007	-7.2 C (19.0 F)
2008	-8.3 C (17.1 F)
2009	-7.8 C (18.0 F)
2010	-11.7 C (10.9 F)
2011	-10.0 C (14.0 F)
2012	-7.2 C (19.0 F)
2013	-6.1 C (21.0 F)
2014	-12.8 C (9.0 F)
2015	-11.7 C (10.9 F)
2016	-6.7 C (19.9 F)
2017	-9.4 C (15.1 F)
2018	-13.9 C (7.0 F)
2019	-7.2 C (19.0 F)
2020	-5.0 C (23.0 F)
2021	-11.1 C (12.0 F)
2022	-12.2 C (10.0 F)
2023	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at Phila 1 WSW, 1949 to 2023. The record is 211.1 mm (8.3 in) in 2005, marked on the chart; the median year is 102.1 mm (4.0 in).

Wettest day (Rx1day) at Phila 1 WSW by year
Year	Wettest day (Rx1day)
1949	45.7 mm (1.8 in)
1950	158.8 mm (6.3 in)
1951	70.1 mm (2.8 in)
1952	47.5 mm (1.9 in)
1953	89.4 mm (3.5 in)
1954	109.2 mm (4.3 in)
1955	57.4 mm (2.3 in)
1956	90.2 mm (3.6 in)
1957	113.0 mm (4.4 in)
1958	66.0 mm (2.6 in)
1959	57.2 mm (2.3 in)
1960	67.8 mm (2.7 in)
1961	106.7 mm (4.2 in)
1962	154.9 mm (6.1 in)
1963	43.2 mm (1.7 in)
1964	102.1 mm (4.0 in)
1965	75.4 mm (3.0 in)
1966	57.2 mm (2.3 in)
1967	129.5 mm (5.1 in)
1968	92.7 mm (3.6 in)
1969	76.7 mm (3.0 in)
1970	56.1 mm (2.2 in)
1971	102.1 mm (4.0 in)
1972	73.7 mm (2.9 in)
1973	104.1 mm (4.1 in)
1974	130.8 mm (5.1 in)
1975	113.8 mm (4.5 in)
1976	96.8 mm (3.8 in)
1977	78.7 mm (3.1 in)
1978	68.3 mm (2.7 in)
1979	126.5 mm (5.0 in)
1980	111.5 mm (4.4 in)
1981	68.6 mm (2.7 in)
1982	98.6 mm (3.9 in)
1983	138.9 mm (5.5 in)
1984	108.2 mm (4.3 in)
1985	67.8 mm (2.7 in)
1986	57.2 mm (2.3 in)
1987	76.2 mm (3.0 in)
1988	114.8 mm (4.5 in)
1989	73.9 mm (2.9 in)
1990	153.7 mm (6.1 in)
1991	108.7 mm (4.3 in)
1992	128.5 mm (5.1 in)
1993	68.6 mm (2.7 in)
1994	85.1 mm (3.4 in)
1995	97.5 mm (3.8 in)
1996	97.5 mm (3.8 in)
1997	78.7 mm (3.1 in)
1998	57.4 mm (2.3 in)
1999	97.8 mm (3.9 in)
2000	108.5 mm (4.3 in)
2001	109.2 mm (4.3 in)
2002	112.8 mm (4.4 in)
2003	179.1 mm (7.1 in)
2004	163.6 mm (6.4 in)
2005	211.1 mm (8.3 in)
2006	130.8 mm (5.1 in)
2007	82.6 mm (3.3 in)
2008	94.0 mm (3.7 in)
2009	114.8 mm (4.5 in)
2010	68.6 mm (2.7 in)
2011	167.6 mm (6.6 in)
2012	102.1 mm (4.0 in)
2013	113.8 mm (4.5 in)
2014	119.4 mm (4.7 in)
2015	84.1 mm (3.3 in)
2016	160.5 mm (6.3 in)
2017	103.1 mm (4.1 in)
2018	111.5 mm (4.4 in)
2019	155.4 mm (6.1 in)
2020	118.1 mm (4.6 in)
2021	114.8 mm (4.5 in)
2022	127.0 mm (5.0 in)
2023	57.2 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Phila 1 WSW, 1949 to 2023. The record is 250.8 mm (9.9 in) in 2022, marked on the chart; the median year is 145.5 mm (5.7 in).

Wettest five days (Rx5day) at Phila 1 WSW by year
Year	Wettest five days (Rx5day)
1949	83.8 mm (3.3 in)
1950	208.7 mm (8.2 in)
1951	120.1 mm (4.7 in)
1952	66.8 mm (2.6 in)
1953	126.5 mm (5.0 in)
1954	113.8 mm (4.5 in)
1955	126.2 mm (5.0 in)
1956	184.7 mm (7.3 in)
1957	176.5 mm (6.9 in)
1958	167.2 mm (6.6 in)
1959	77.3 mm (3.0 in)
1960	107.5 mm (4.2 in)
1961	233.4 mm (9.2 in)
1962	217.9 mm (8.6 in)
1963	68.5 mm (2.7 in)
1964	133.6 mm (5.3 in)
1965	97.0 mm (3.8 in)
1966	111.0 mm (4.4 in)
1967	161.5 mm (6.4 in)
1968	96.5 mm (3.8 in)
1969	140.5 mm (5.5 in)
1970	123.5 mm (4.9 in)
1971	200.1 mm (7.9 in)
1972	95.0 mm (3.7 in)
1973	150.4 mm (5.9 in)
1974	171.2 mm (6.7 in)
1975	163.6 mm (6.4 in)
1976	179.4 mm (7.1 in)
1977	125.4 mm (4.9 in)
1978	99.0 mm (3.9 in)
1979	204.3 mm (8.0 in)
1980	167.6 mm (6.6 in)
1981	120.7 mm (4.8 in)
1982	171.0 mm (6.7 in)
1983	235.0 mm (9.3 in)
1984	145.5 mm (5.7 in)
1985	96.0 mm (3.8 in)
1986	125.2 mm (4.9 in)
1987	104.1 mm (4.1 in)
1988	114.8 mm (4.5 in)
1989	118.4 mm (4.7 in)
1990	187.5 mm (7.4 in)
1991	204.6 mm (8.1 in)
1992	167.9 mm (6.6 in)
1993	105.5 mm (4.2 in)
1994	98.3 mm (3.9 in)
1995	245.1 mm (9.6 in)
1996	131.3 mm (5.2 in)
1997	142.2 mm (5.6 in)
1998	103.9 mm (4.1 in)
1999	127.0 mm (5.0 in)
2000	154.7 mm (6.1 in)
2001	170.1 mm (6.7 in)
2002	193.0 mm (7.6 in)
2003	179.1 mm (7.1 in)
2004	167.7 mm (6.6 in)
2005	211.9 mm (8.3 in)
2006	189.3 mm (7.5 in)
2007	126.8 mm (5.0 in)
2008	166.4 mm (6.6 in)
2009	164.4 mm (6.5 in)
2010	95.3 mm (3.8 in)
2011	196.3 mm (7.7 in)
2012	130.0 mm (5.1 in)
2013	163.3 mm (6.4 in)
2014	172.2 mm (6.8 in)
2015	127.2 mm (5.0 in)
2016	160.5 mm (6.3 in)
2017	110.5 mm (4.4 in)
2018	121.9 mm (4.8 in)
2019	218.9 mm (8.6 in)
2020	182.3 mm (7.2 in)
2021	162.4 mm (6.4 in)
2022	250.8 mm (9.9 in)
2023	102.4 mm (4.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Phila 1 WSW, 1949 to 2023. The record is 55 days in 1993, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Phila 1 WSW by year
Year	Longest dry spell (CDD)
1949	18 days
1950	14 days
1951	26 days
1952	51 days
1953	27 days
1954	14 days
1955	23 days
1956	24 days
1957	14 days
1958	20 days
1959	14 days
1960	17 days
1961	25 days
1962	18 days
1963	17 days
1964	24 days
1965	29 days
1966	15 days
1967	21 days
1968	16 days
1969	21 days
1970	26 days
1971	18 days
1972	22 days
1973	15 days
1974	17 days
1975	18 days
1976	24 days
1977	15 days
1978	23 days
1979	18 days
1980	21 days
1981	28 days
1982	20 days
1983	21 days
1984	34 days
1985	23 days
1986	25 days
1987	26 days
1988	24 days
1989	18 days
1990	20 days
1991	27 days
1992	19 days
1993	55 days
1994	16 days
1995	31 days
1996	28 days
1997	20 days
1998	24 days
1999	21 days
2000	30 days
2001	30 days
2002	23 days
2003	16 days
2004	23 days
2005	38 days
2006	18 days
2007	29 days
2008	28 days
2009	22 days
2010	17 days
2011	24 days
2012	25 days
2013	30 days
2014	33 days
2015	34 days
2016	25 days
2017	24 days
2018	11 days
2019	13 days
2020	13 days
2021	19 days
2022	22 days
2023	11 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

64 years with a frost

Across 64 years with a frost, the median last spring frost at Phila 1 WSW falls on 25 March and the median first autumn frost on 4 November, which leaves a median of 223 days between them.

In 1992 to 2022 the median growing season was 231 days. That is 15 days more than in 1953 to 1984.

Fitted over all years, the growing season changes by +3.9 days per decade at this station.

Frost dates and growing season at Phila 1 WSW
Measure	Median, all years	Earliest period (1953 to 1984)	Recent period (1992 to 2022)	Recent against earliest	Fitted trend
Last spring frost	25 March	26 March	21 March	5 days earlier	-2.2 days per decade
First autumn frost	4 November	31 October	6 November	6 days later	+1.7 days per decade
Growing days	223 days	216 days	231 days	15 days more	+3.9 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

70 years, 1950 to 2022

A day with at least 97.7 mm (3.8 in) of rain is expected about once in 2 years. A day with at least 197.6 mm (7.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Phila 1 WSW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	97.7 mm (3.8 in)
5 years	128.1 mm (5.0 in)
10 years	146.6 mm (5.8 in)
25 years	168.4 mm (6.6 in)
50 years	183.5 mm (7.2 in)
100 years	197.6 mm (7.8 in)	Longer than the 70 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, 70 years of values from 1950 to 2022.

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: 211.1 mm (8.3 in) in 2005; 179.1 mm (7.1 in) in 2003; 167.6 mm (6.6 in) in 2011.

Station Changes

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

Climate Twins

2007 to 2022 against 1961 to 1990

Over 2007 to 2022, Phila 1 WSW had a mean temperature of 18.1 C (64.5 F) and 1,404.3 mm (55.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Greensboro (United States, 146 km away), Jackson Intl AP (United States, 102 km away) and Montgomery AP (United States, 261 km away).

Climate twins of Phila 1 WSW: stations whose 1961 to 1990 climate is closest to its 2007 to 2022 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Greensboro	United States	146 km (91 mi)	17.9 C (64.1 F)	1,427.3 mm (56.2 in)	0.51
Jackson Intl AP	United States	102 km (63 mi)	18.0 C (64.5 F)	1,415.3 mm (55.7 in)	0.52
Montgomery AP	United States	261 km (162 mi)	18.2 C (64.8 F)	1,357.6 mm (53.4 in)	0.53

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 Phila 1 WSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Phila 1 WSW 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).