York AP Weather Records (USW00093778)

Record envelope, standing records and threshold days for York AP (USW00093778), Pennsylvania, United States, with 30 years of record.

Key Facts for York AP

York AP (USW00093778) is a weather station in Pennsylvania, United States at 39.92 latitude and -76.88 longitude, 141 m (464 ft) above sea level.
The station reports from 1997 to 2026, 30 years of record.
1,464 records set at York AP still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Pennsylvania, United States, 39.92 latitude, -76.88 longitude.
Elevation: 141 m (464 ft).
Period of record: 1997 to 2026, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

21 days at or beyond a record

The band shows the record high and record low for each calendar day at York AP. The lines show the 2026 daily maximum and minimum. 21 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at York AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.9 C (75.0 F)	-26.6 C (-15.9 F)	12.2 C (54.0 F)	-26.6 C (-15.9 F)
Feb	26.7 C (80.1 F)	-24.3 C (-11.7 F)	16.7 C (62.1 F)	-11.6 C (11.1 F)
Mar	30.0 C (86.0 F)	-24.3 C (-11.7 F)	28.3 C (82.9 F)	-8.2 C (17.2 F)
Apr	32.8 C (91.0 F)	-8.3 C (17.1 F)	28.3 C (82.9 F)	-4.9 C (23.2 F)
May	33.9 C (93.0 F)	-2.2 C (28.0 F)	29.4 C (84.9 F)	6.1 C (43.0 F)
Jun	36.7 C (98.1 F)	3.9 C (39.0 F)	35.6 C (96.1 F)	5.6 C (42.1 F)
Jul	37.8 C (100.0 F)	6.7 C (44.1 F)	33.3 C (91.9 F)	14.4 C (57.9 F)
Aug	37.2 C (99.0 F)	5.6 C (42.1 F)	32.2 C (90.0 F)	8.3 C (46.9 F)
Sep	36.1 C (97.0 F)	0.0 C (32.0 F)	30.6 C (87.1 F)	5.6 C (42.1 F)
Oct	33.3 C (91.9 F)	-5.6 C (21.9 F)	27.8 C (82.0 F)	-3.3 C (26.1 F)
Nov	28.9 C (84.0 F)	-11.0 C (12.2 F)	20.6 C (69.1 F)	-5.6 C (21.9 F)
Dec	25.6 C (78.1 F)	-23.3 C (-9.9 F)	15.0 C (59.0 F)	-18.3 C (-0.9 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at York AP still stand. 2000 holds the most, with 88.

Standing records at York AP by the year they were set
Year set	Standing records
1997	18
1998	57
1999	51
2000	88
2001	62
2002	78
2003	41
2004	50
2005	55
2006	45
2007	72
2008	42
2009	52
2010	47
2011	51
2012	46
2013	47
2014	56
2015	63
2016	51
2017	61
2018	49
2019	37
2020	38
2021	42
2022	42
2023	43
2024	45
2025	35

Wettest Day of Each Month

Sep: 167.4 mm (6.6 in)

The wettest day on record for each calendar month at York AP. The most was 167.4 mm (6.6 in) on 1 September 2021.

Record daily precipitation for each month at York AP
Month	Record daily precipitation (mm)	Date
Jan	45.7 mm (1.8 in)	14 January 2005
Feb	50.5 mm (2.0 in)	1 February 2008
Mar	82.0 mm (3.2 in)	30 March 2014
Apr	59.2 mm (2.3 in)	30 April 2014
May	58.4 mm (2.3 in)	27 May 2010
Jun	50.3 mm (2.0 in)	4 June 2020
Jul	70.6 mm (2.8 in)	23 July 2018
Aug	100.1 mm (3.9 in)	20 August 2015
Sep	167.4 mm (6.6 in)	1 September 2021
Oct	125.2 mm (4.9 in)	11 October 2013
Nov	55.9 mm (2.2 in)	2 November 2018
Dec	56.4 mm (2.2 in)	11 December 2008

Period of Record Coverage

1997 to 2025

29 years of record at York AP, 1997 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 1997.

Days with data per year at York AP
Year	Days with data	Share of year	Complete
1997	118	32%	No
1998	363	99%	Yes
1999	364	100%	Yes
2000	364	99%	Yes
2001	360	99%	Yes
2002	359	98%	Yes
2003	362	99%	Yes
2004	364	99%	Yes
2005	355	97%	Yes
2006	364	100%	Yes
2007	363	99%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	363	99%	Yes
2012	365	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	362	99%	Yes
2019	361	99%	Yes
2020	366	100%	Yes
2021	364	100%	Yes
2022	365	100%	Yes
2023	365	100%	Yes
2024	363	99%	Yes
2025	361	99%	Yes

Latest Records

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

Climate Trend

28 complete years, 1998 to 2025

One stripe for each of 28 complete years at York AP, 1998 to 2025. Blue stripes are years cooler than the station's own mean of 11.6 C (52.8 F); red stripes are warmer. The coolest year was 2014, at 10.1 C (50.2 F), and the warmest was 2024, at 12.9 C (55.2 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at York AP as warming stripes, 1998 to 2025
Year	Annual mean temperature	Difference from the station mean
1998	12.2 C	+0.68 C
1999	11.3 C	-0.22 C
2000	10.2 C	-1.32 C
2001	10.9 C	-0.68 C
2002	11.5 C	-0.09 C
2003	10.4 C	-1.17 C
2004	11.1 C	-0.41 C
2005	11.2 C	-0.40 C
2006	11.9 C	+0.30 C
2007	11.4 C	-0.15 C
2008	11.4 C	-0.16 C
2009	10.8 C	-0.72 C
2010	11.5 C	-0.06 C
2011	12.0 C	+0.42 C
2012	12.4 C	+0.87 C
2013	11.3 C	-0.27 C
2014	10.1 C	-1.44 C
2015	11.2 C	-0.33 C
2016	11.9 C	+0.30 C
2017	12.0 C	+0.47 C
2018	11.7 C	+0.15 C
2019	11.7 C	+0.19 C
2020	12.2 C	+0.68 C
2021	12.3 C	+0.71 C
2022	11.8 C	+0.23 C
2023	12.6 C	+1.06 C
2024	12.9 C	+1.34 C
2025	11.7 C	+0.10 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 York AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	2011	35.0 C (95.0 F)	30
Coldest night (TNn)	-26.6 C (-15.9 F)	2025	-20.2 C (-4.4 F)	30
Wettest day (Rx1day)	167.4 mm (6.6 in)	2021	57.7 mm (2.3 in)	29
Wettest five days (Rx5day)	260.9 mm (10.3 in)	2018	89.9 mm (3.5 in)	29
Longest dry spell (CDD)	34 days	2001	20 days	29

Hottest day (TXx)

The hottest day of the year at York AP, 1997 to 2026. The record is 37.8 C (100.0 F) in 2011, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at York AP by year
Year	Hottest day (TXx)
1997	31.1 C (88.0 F)
1998	32.8 C (91.0 F)
1999	36.1 C (97.0 F)
2000	32.2 C (90.0 F)
2001	35.6 C (96.1 F)
2002	37.2 C (99.0 F)
2003	32.8 C (91.0 F)
2004	32.8 C (91.0 F)
2005	35.0 C (95.0 F)
2006	35.6 C (96.1 F)
2007	34.4 C (93.9 F)
2008	35.6 C (96.1 F)
2009	33.3 C (91.9 F)
2010	36.1 C (97.0 F)
2011	37.8 C (100.0 F)
2012	37.2 C (99.0 F)
2013	35.0 C (95.0 F)
2014	33.9 C (93.0 F)
2015	33.3 C (91.9 F)
2016	35.0 C (95.0 F)
2017	34.4 C (93.9 F)
2018	35.0 C (95.0 F)
2019	35.0 C (95.0 F)
2020	35.6 C (96.1 F)
2021	35.6 C (96.1 F)
2022	34.4 C (93.9 F)
2023	36.1 C (97.0 F)
2024	37.8 C (100.0 F)
2025	35.6 C (96.1 F)
2026	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at York AP, 1997 to 2026. The record is -26.6 C (-15.9 F) in 2025, marked on the chart; the median year is -20.2 C (-4.4 F).

Coldest night (TNn) at York AP by year
Year	Coldest night (TNn)
1997	-12.8 C (9.0 F)
1998	-13.9 C (7.0 F)
1999	-16.1 C (3.0 F)
2000	-21.1 C (-6.0 F)
2001	-20.6 C (-5.1 F)
2002	-23.3 C (-9.9 F)
2003	-19.4 C (-2.9 F)
2004	-24.4 C (-11.9 F)
2005	-24.4 C (-11.9 F)
2006	-16.6 C (2.1 F)
2007	-22.7 C (-8.9 F)
2008	-14.3 C (6.3 F)
2009	-19.9 C (-3.8 F)
2010	-19.9 C (-3.8 F)
2011	-21.6 C (-6.9 F)
2012	-13.2 C (8.2 F)
2013	-17.7 C (0.1 F)
2014	-23.2 C (-9.8 F)
2015	-24.3 C (-11.7 F)
2016	-23.2 C (-9.8 F)
2017	-20.5 C (-4.9 F)
2018	-23.2 C (-9.8 F)
2019	-22.1 C (-7.8 F)
2020	-17.1 C (1.2 F)
2021	-16.0 C (3.2 F)
2022	-16.6 C (2.1 F)
2023	-11.6 C (11.1 F)
2024	-18.2 C (-0.8 F)
2025	-26.6 C (-15.9 F)
2026	-22.2 C (-8.0 F)

Wettest day (Rx1day)

The wettest day of the year at York AP, 1997 to 2026. The record is 167.4 mm (6.6 in) in 2021, marked on the chart; the median year is 57.7 mm (2.3 in).

Wettest day (Rx1day) at York AP by year
Year	Wettest day (Rx1day)
1997	n/a
1998	46.5 mm (1.8 in)
1999	82.3 mm (3.2 in)
2000	61.7 mm (2.4 in)
2001	54.9 mm (2.2 in)
2002	45.5 mm (1.8 in)
2003	53.3 mm (2.1 in)
2004	71.1 mm (2.8 in)
2005	99.6 mm (3.9 in)
2006	52.1 mm (2.1 in)
2007	42.2 mm (1.7 in)
2008	90.4 mm (3.6 in)
2009	50.5 mm (2.0 in)
2010	67.8 mm (2.7 in)
2011	119.6 mm (4.7 in)
2012	91.7 mm (3.6 in)
2013	125.2 mm (4.9 in)
2014	82.0 mm (3.2 in)
2015	100.1 mm (3.9 in)
2016	44.5 mm (1.8 in)
2017	39.9 mm (1.6 in)
2018	77.7 mm (3.1 in)
2019	64.8 mm (2.6 in)
2020	50.3 mm (2.0 in)
2021	167.4 mm (6.6 in)
2022	57.7 mm (2.3 in)
2023	56.6 mm (2.2 in)
2024	38.1 mm (1.5 in)
2025	47.5 mm (1.9 in)
2026	34.5 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at York AP, 1997 to 2026. The record is 260.9 mm (10.3 in) in 2018, marked on the chart; the median year is 89.9 mm (3.5 in).

Wettest five days (Rx5day) at York AP by year
Year	Wettest five days (Rx5day)
1997	n/a
1998	61.5 mm (2.4 in)
1999	111.0 mm (4.4 in)
2000	66.1 mm (2.6 in)
2001	67.3 mm (2.6 in)
2002	70.7 mm (2.8 in)
2003	83.1 mm (3.3 in)
2004	115.3 mm (4.5 in)
2005	138.5 mm (5.5 in)
2006	73.9 mm (2.9 in)
2007	67.0 mm (2.6 in)
2008	101.8 mm (4.0 in)
2009	71.3 mm (2.8 in)
2010	149.9 mm (5.9 in)
2011	244.5 mm (9.6 in)
2012	91.7 mm (3.6 in)
2013	252.7 mm (9.9 in)
2014	105.7 mm (4.2 in)
2015	101.1 mm (4.0 in)
2016	57.9 mm (2.3 in)
2017	61.0 mm (2.4 in)
2018	260.9 mm (10.3 in)
2019	85.1 mm (3.4 in)
2020	89.9 mm (3.5 in)
2021	167.4 mm (6.6 in)
2022	98.1 mm (3.9 in)
2023	90.4 mm (3.6 in)
2024	84.6 mm (3.3 in)
2025	68.0 mm (2.7 in)
2026	48.2 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at York AP, 1997 to 2026. The record is 34 days in 2001, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at York AP by year
Year	Longest dry spell (CDD)
1997	n/a
1998	30 days
1999	17 days
2000	21 days
2001	34 days
2002	13 days
2003	13 days
2004	23 days
2005	27 days
2006	19 days
2007	26 days
2008	24 days
2009	13 days
2010	20 days
2011	13 days
2012	13 days
2013	29 days
2014	12 days
2015	19 days
2016	18 days
2017	24 days
2018	13 days
2019	20 days
2020	25 days
2021	22 days
2022	14 days
2023	21 days
2024	33 days
2025	13 days
2026	20 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at York AP falls on 26 April and the median first autumn frost on 19 October, which leaves a median of 174 days between them.

Fitted over all years, the growing season changes by +3.1 days per decade at this station.

Frost dates and growing season at York AP
Measure	Median, all years	Earliest period	Recent period (1998 to 2025)	Recent against earliest	Fitted trend
Last spring frost	26 April	n/a	26 April	n/a	-0.7 days per decade
First autumn frost	19 October	n/a	19 October	n/a	+2.4 days per decade
Growing days	174 days	n/a	174 days	n/a	+3.1 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.

Download the Data

Data for York AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for York AP 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 2026-10-17 (17 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).