Dayton Wright Brothers AP Weather Records (USW00053859)

Record envelope, standing records and threshold days for Dayton Wright Brothers AP (USW00053859), Ohio, United States, with 30 years of record.

Key Facts for Dayton Wright Brothers AP

Dayton Wright Brothers AP (USW00053859) is a weather station in Ohio, United States at 39.59 latitude and -84.23 longitude, 291 m (953 ft) above sea level.
The station reports from 1997 to 2026, 30 years of record.
1,464 records set at Dayton Wright Brothers AP still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Ohio, United States, 39.59 latitude, -84.23 longitude.
Elevation: 291 m (953 ft).
Period of record: 1997 to 2026, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

28 days at or beyond a record

The band shows the record high and record low for each calendar day at Dayton Wright Brothers AP. The lines show the 2026 daily maximum and minimum. 28 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Dayton Wright Brothers AP, 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)	-23.9 C (-11.0 F)	15.0 C (59.0 F)	-19.9 C (-3.8 F)
Feb	25.6 C (78.1 F)	-22.7 C (-8.9 F)	20.6 C (69.1 F)	-12.1 C (10.2 F)
Mar	28.9 C (84.0 F)	-15.0 C (5.0 F)	27.2 C (81.0 F)	-7.7 C (18.1 F)
Apr	29.4 C (84.9 F)	-6.0 C (21.2 F)	27.8 C (82.0 F)	-3.2 C (26.2 F)
May	35.0 C (95.0 F)	-1.6 C (29.1 F)	28.9 C (84.0 F)	3.9 C (39.0 F)
Jun	37.8 C (100.0 F)	5.0 C (41.0 F)	33.9 C (93.0 F)	5.6 C (42.1 F)
Jul	38.9 C (102.0 F)	10.0 C (50.0 F)	33.3 C (91.9 F)	16.1 C (61.0 F)
Aug	37.2 C (99.0 F)	8.3 C (46.9 F)	33.3 C (91.9 F)	8.3 C (46.9 F)
Sep	36.1 C (97.0 F)	2.2 C (36.0 F)	31.7 C (89.1 F)	7.2 C (45.0 F)
Oct	35.0 C (95.0 F)	-3.3 C (26.1 F)	28.9 C (84.0 F)	0.0 C (32.0 F)
Nov	26.7 C (80.1 F)	-12.1 C (10.2 F)	20.6 C (69.1 F)	-8.3 C (17.1 F)
Dec	21.7 C (71.1 F)	-23.3 C (-9.9 F)	20.6 C (69.1 F)	-18.9 C (-2.0 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dayton Wright Brothers AP still stand. 2007 holds the most, with 84.

Standing records at Dayton Wright Brothers AP by the year they were set
Year set	Standing records
1997	4
1998	54
1999	61
2000	64
2001	54
2002	55
2003	45
2004	42
2005	50
2006	47
2007	84
2008	44
2009	49
2010	46
2011	49
2012	60
2013	43
2014	61
2015	63
2016	43
2017	60
2018	73
2019	62
2020	43
2021	39
2022	32
2023	45
2024	56
2025	36

Wettest Day of Each Month

Sep: 96.5 mm (3.8 in)

The wettest day on record for each calendar month at Dayton Wright Brothers AP. The most was 96.5 mm (3.8 in) on 27 September 2002.

Record daily precipitation for each month at Dayton Wright Brothers AP
Month	Record daily precipitation (mm)	Date
Jan	62.5 mm (2.5 in)	4 January 2004
Feb	45.2 mm (1.8 in)	24 February 2018
Mar	61.7 mm (2.4 in)	18 March 2008
Apr	62.5 mm (2.5 in)	3 April 2018
May	47.0 mm (1.9 in)	19 May 2020
Jun	67.1 mm (2.6 in)	14 June 2017
Jul	95.8 mm (3.8 in)	27 July 2002
Aug	54.6 mm (2.1 in)	30 August 2005
Sep	96.5 mm (3.8 in)	27 September 2002
Oct	60.7 mm (2.4 in)	7 October 2025
Nov	61.0 mm (2.4 in)	1 November 2018
Dec	64.0 mm (2.5 in)	21 December 1998

Period of Record Coverage

1997 to 2025

29 years of record at Dayton Wright Brothers 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 Dayton Wright Brothers AP
Year	Days with data	Share of year	Complete
1997	60	16%	No
1998	362	99%	Yes
1999	362	99%	Yes
2000	357	98%	Yes
2001	347	95%	Yes
2002	360	99%	Yes
2003	359	98%	Yes
2004	365	100%	Yes
2005	364	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	364	99%	Yes
2009	365	100%	Yes
2010	364	100%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	365	100%	Yes
2014	363	99%	Yes
2015	355	97%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	364	100%	Yes
2019	365	100%	Yes
2020	365	100%	Yes
2021	352	96%	Yes
2022	360	99%	Yes
2023	365	100%	Yes
2024	363	99%	Yes
2025	365	100%	Yes

Latest Records

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

Climate Trend

27 complete years, 1998 to 2025

One stripe for each of 27 complete years at Dayton Wright Brothers AP, 1998 to 2025. Blue stripes are years cooler than the station's own mean of 12.2 C (54.0 F); red stripes are warmer. The coolest year was 2014, at 10.6 C (51.1 F), and the warmest was 2024, at 14.1 C (57.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Dayton Wright Brothers AP as warming stripes, 1998 to 2025
Year	Annual mean temperature	Difference from the station mean
1998	13.1 C	+0.85 C
1999	12.2 C	-0.04 C
2000	11.1 C	-1.13 C
2002	12.0 C	-0.20 C
2003	10.9 C	-1.32 C
2004	11.6 C	-0.65 C
2005	11.8 C	-0.45 C
2006	12.2 C	+0.00 C
2007	12.2 C	-0.05 C
2008	11.1 C	-1.11 C
2009	11.2 C	-1.06 C
2010	11.8 C	-0.42 C
2011	12.1 C	-0.11 C
2012	13.1 C	+0.86 C
2013	11.4 C	-0.88 C
2014	10.6 C	-1.64 C
2015	12.0 C	-0.20 C
2016	13.0 C	+0.72 C
2017	12.7 C	+0.49 C
2018	12.9 C	+0.66 C
2019	13.2 C	+0.98 C
2020	12.9 C	+0.68 C
2021	13.1 C	+0.88 C
2022	12.5 C	+0.22 C
2023	13.3 C	+1.09 C
2024	14.1 C	+1.88 C
2025	12.2 C	-0.07 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 Dayton Wright Brothers AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	2012	34.4 C (93.9 F)	30
Coldest night (TNn)	-23.9 C (-11.0 F)	2003	-18.0 C (-0.4 F)	30
Wettest day (Rx1day)	96.5 mm (3.8 in)	2002	54.6 mm (2.1 in)	29
Wettest five days (Rx5day)	139.5 mm (5.5 in)	2002	94.8 mm (3.7 in)	29
Longest dry spell (CDD)	31 days	2007	16 days	29

Hottest day (TXx)

The hottest day of the year at Dayton Wright Brothers AP, 1997 to 2026. The record is 38.9 C (102.0 F) in 2012, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Dayton Wright Brothers AP by year
Year	Hottest day (TXx)
1997	18.3 C (64.9 F)
1998	34.4 C (93.9 F)
1999	36.7 C (98.1 F)
2000	31.1 C (88.0 F)
2001	32.8 C (91.0 F)
2002	34.4 C (93.9 F)
2003	32.2 C (90.0 F)
2004	31.7 C (89.1 F)
2005	35.6 C (96.1 F)
2006	33.9 C (93.0 F)
2007	36.7 C (98.1 F)
2008	33.9 C (93.0 F)
2009	33.9 C (93.0 F)
2010	34.4 C (93.9 F)
2011	36.1 C (97.0 F)
2012	38.9 C (102.0 F)
2013	33.9 C (93.0 F)
2014	32.2 C (90.0 F)
2015	33.3 C (91.9 F)
2016	34.4 C (93.9 F)
2017	35.0 C (95.0 F)
2018	34.4 C (93.9 F)
2019	35.0 C (95.0 F)
2020	35.0 C (95.0 F)
2021	34.4 C (93.9 F)
2022	35.0 C (95.0 F)
2023	33.9 C (93.0 F)
2024	37.2 C (99.0 F)
2025	33.9 C (93.0 F)
2026	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Dayton Wright Brothers AP, 1997 to 2026. The record is -23.9 C (-11.0 F) in 2003, marked on the chart; the median year is -18.0 C (-0.4 F).

Coldest night (TNn) at Dayton Wright Brothers AP by year
Year	Coldest night (TNn)
1997	-9.4 C (15.1 F)
1998	-12.8 C (9.0 F)
1999	-22.2 C (-8.0 F)
2000	-21.1 C (-6.0 F)
2001	-16.1 C (3.0 F)
2002	-15.0 C (5.0 F)
2003	-23.9 C (-11.0 F)
2004	-23.3 C (-9.9 F)
2005	-17.8 C (0.0 F)
2006	-14.9 C (5.2 F)
2007	-19.9 C (-3.8 F)
2008	-18.2 C (-0.8 F)
2009	-22.7 C (-8.9 F)
2010	-16.6 C (2.1 F)
2011	-19.9 C (-3.8 F)
2012	-11.6 C (11.1 F)
2013	-14.9 C (5.2 F)
2014	-22.7 C (-8.9 F)
2015	-22.7 C (-8.9 F)
2016	-16.6 C (2.1 F)
2017	-17.1 C (1.2 F)
2018	-23.2 C (-9.8 F)
2019	-20.5 C (-4.9 F)
2020	-12.1 C (10.2 F)
2021	-16.6 C (2.1 F)
2022	-22.1 C (-7.8 F)
2023	-9.9 C (14.2 F)
2024	-16.0 C (3.2 F)
2025	-19.9 C (-3.8 F)
2026	-21.7 C (-7.1 F)

Wettest day (Rx1day)

The wettest day of the year at Dayton Wright Brothers AP, 1997 to 2026. The record is 96.5 mm (3.8 in) in 2002, marked on the chart; the median year is 54.6 mm (2.1 in).

Wettest day (Rx1day) at Dayton Wright Brothers AP by year
Year	Wettest day (Rx1day)
1997	n/a
1998	64.0 mm (2.5 in)
1999	29.5 mm (1.2 in)
2000	74.4 mm (2.9 in)
2001	42.2 mm (1.7 in)
2002	96.5 mm (3.8 in)
2003	61.0 mm (2.4 in)
2004	62.5 mm (2.5 in)
2005	54.6 mm (2.1 in)
2006	59.9 mm (2.4 in)
2007	42.4 mm (1.7 in)
2008	61.7 mm (2.4 in)
2009	73.2 mm (2.9 in)
2010	42.7 mm (1.7 in)
2011	80.3 mm (3.2 in)
2012	43.2 mm (1.7 in)
2013	51.6 mm (2.0 in)
2014	50.5 mm (2.0 in)
2015	45.5 mm (1.8 in)
2016	39.4 mm (1.6 in)
2017	67.1 mm (2.6 in)
2018	66.8 mm (2.6 in)
2019	48.8 mm (1.9 in)
2020	47.0 mm (1.9 in)
2021	48.5 mm (1.9 in)
2022	63.2 mm (2.5 in)
2023	61.5 mm (2.4 in)
2024	39.9 mm (1.6 in)
2025	60.7 mm (2.4 in)
2026	53.6 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dayton Wright Brothers AP, 1997 to 2026. The record is 139.5 mm (5.5 in) in 2002, marked on the chart; the median year is 94.8 mm (3.7 in).

Wettest five days (Rx5day) at Dayton Wright Brothers AP by year
Year	Wettest five days (Rx5day)
1997	n/a
1998	94.8 mm (3.7 in)
1999	70.4 mm (2.8 in)
2000	125.2 mm (4.9 in)
2001	76.1 mm (3.0 in)
2002	139.5 mm (5.5 in)
2003	95.5 mm (3.8 in)
2004	104.0 mm (4.1 in)
2005	102.6 mm (4.0 in)
2006	84.2 mm (3.3 in)
2007	82.8 mm (3.3 in)
2008	105.4 mm (4.1 in)
2009	78.1 mm (3.1 in)
2010	66.0 mm (2.6 in)
2011	106.0 mm (4.2 in)
2012	74.7 mm (2.9 in)
2013	98.9 mm (3.9 in)
2014	107.4 mm (4.2 in)
2015	99.3 mm (3.9 in)
2016	82.3 mm (3.2 in)
2017	91.9 mm (3.6 in)
2018	116.5 mm (4.6 in)
2019	81.8 mm (3.2 in)
2020	93.8 mm (3.7 in)
2021	100.6 mm (4.0 in)
2022	71.3 mm (2.8 in)
2023	94.5 mm (3.7 in)
2024	77.7 mm (3.1 in)
2025	109.3 mm (4.3 in)
2026	113.2 mm (4.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dayton Wright Brothers AP, 1997 to 2026. The record is 31 days in 2007, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Dayton Wright Brothers AP by year
Year	Longest dry spell (CDD)
1997	n/a
1998	15 days
1999	22 days
2000	15 days
2001	21 days
2002	21 days
2003	19 days
2004	15 days
2005	13 days
2006	15 days
2007	31 days
2008	18 days
2009	16 days
2010	16 days
2011	12 days
2012	19 days
2013	11 days
2014	16 days
2015	14 days
2016	16 days
2017	16 days
2018	16 days
2019	21 days
2020	14 days
2021	13 days
2022	17 days
2023	17 days
2024	17 days
2025	22 days
2026	15 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Dayton Wright Brothers AP falls on 15 April and the median first autumn frost on 25 October, which leaves a median of 187 days between them.

Fitted over all years, the growing season changes by +2.1 days per decade at this station.

Frost dates and growing season at Dayton Wright Brothers AP
Measure	Median, all years	Earliest period	Recent period (1998 to 2025)	Recent against earliest	Fitted trend
Last spring frost	15 April	n/a	15 April	n/a	+4.4 days per decade
First autumn frost	25 October	n/a	25 October	n/a	+6.5 days per decade
Growing days	187 days	n/a	187 days	n/a	+2.1 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 Dayton Wright Brothers AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dayton Wright Brothers 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 2026-10-15 (15 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).