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Built 2026-10-16 (16 October 2026)

Ashurst Hayden Dam Weather Records (USC00020498)

Record envelope, standing records and threshold days for Ashurst Hayden Dam (USC00020498), Arizona, United States, with 71 years of record.

Key Facts for Ashurst Hayden Dam

  • Ashurst Hayden Dam (USC00020498) is a weather station in Arizona, United States at 33.10 latitude and -111.26 longitude, 479 m (1,570 ft) above sea level.
  • The station reports from 1956 to 2026, 71 years of record.
  • 0 records set at Ashurst Hayden Dam still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Ashurst Hayden Dam set a daily record precipitation of 5.3 mm (0.21 in) on 31 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Arizona, United States, 33.10 latitude, -111.26 longitude.
  • Elevation: 479 m (1,570 ft).
  • Period of record: 1956 to 2026, 71 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ashurst Hayden Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ashurst Hayden Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ashurst Hayden Dam. 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 Ashurst Hayden Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
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Aprn/an/an/an/a
Mayn/an/an/an/a
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Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Ashurst Hayden Dam by the year they were set 0 records at Ashurst Hayden Dam still stand. 00000000000
0 records at Ashurst Hayden Dam still stand.
Standing records at Ashurst Hayden Dam by the year they were set
Year setStanding records

Wettest Day of Each Month

Aug: 68.6 mm (2.7 in)
Record daily precipitation for each month at Ashurst Hayden Dam The wettest day on record for each calendar month at Ashurst Hayden Dam. The most was 68.6 mm (2.7 in) on 15 August 1961. 020406080 Jan: 50.8 mm (2.0 in), 22 January 2010 Jan Feb: 44.5 mm (1.8 in), 22 February 2019 Feb Mar: 50.8 mm (2.0 in), 12 March 2006 Mar Apr: 27.9 mm (1.1 in), 6 April 1975 Apr May: 17.8 mm (0.7 in), 19 May 2011 May Jun: 19.1 mm (0.8 in), 23 June 1972 Jun Jul: 61.5 mm (2.4 in), 11 July 2008 Jul Aug: 68.6 mm (2.7 in), 15 August 1961 Aug Sep: 50.8 mm (2.0 in), 1 September 2015 Sep Oct: 59.7 mm (2.4 in), 20 October 1972 Oct Nov: 40.6 mm (1.6 in), 14 November 1993 Nov Dec: 45.0 mm (1.8 in), 11 December 1965 Dec
The wettest day on record for each calendar month at Ashurst Hayden Dam. The most was 68.6 mm (2.7 in) on 15 August 1961.
Record daily precipitation for each month at Ashurst Hayden Dam
MonthRecord daily precipitation (mm)Date
Jan50.8 mm (2.0 in)22 January 2010
Feb44.5 mm (1.8 in)22 February 2019
Mar50.8 mm (2.0 in)12 March 2006
Apr27.9 mm (1.1 in)6 April 1975
May17.8 mm (0.7 in)19 May 2011
Jun19.1 mm (0.8 in)23 June 1972
Jul61.5 mm (2.4 in)11 July 2008
Aug68.6 mm (2.7 in)15 August 1961
Sep50.8 mm (2.0 in)1 September 2015
Oct59.7 mm (2.4 in)20 October 1972
Nov40.6 mm (1.6 in)14 November 1993
Dec45.0 mm (1.8 in)11 December 1965

Latest Records

20
Latest records at Ashurst Hayden Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
31 August 2026Ashurst Hayden Dam, USdaily rain (Provisional)5.3 mm (0.21 in)1.2 mm (0.05 in)68 years20 of 100 (Routine)
14 July 2026Ashurst Hayden Dam, USdaily rain30.5 mm (1.2 in)16.3 mm (0.6 in)61 years43 of 100 (Notable)
23 November 2025Ashurst Hayden Dam, USdaily rain14.0 mm (0.6 in)0.8 mm (0.03 in)20 years13 of 100 (Routine)
14 October 2025Ashurst Hayden Dam, USdaily rain7.9 mm (0.31 in)4.1 mm (0.16 in)36 years20 of 100 (Routine)
13 October 2025Ashurst Hayden Dam, USdaily rain10.9 mm (0.4 in)9.1 mm (0.36 in)44 years20 of 100 (Routine)
27 September 2025Ashurst Hayden Dam, USdaily rain34.3 mm (1.4 in)31.5 mm (1.2 in)40 years52 of 100 (Notable)
22 August 2025Ashurst Hayden Dam, USdaily rain22.4 mm (0.9 in)0.8 mm (0.03 in)32 years16 of 100 (Routine)
3 July 2025Ashurst Hayden Dam, USdaily rain6.4 mm (0.25 in)0.8 mm (0.03 in)10 years10 of 100 (Routine)
2 June 2025Ashurst Hayden Dam, USdaily rain4.6 mm (0.18 in)4.6 mm (0.18 in)68 years20 of 100 (Routine)
21 June 2024Ashurst Hayden Dam, USdaily rain1.3 mm (0.05 in)1.0 mm (0.04 in)58 years20 of 100 (Routine)
1 April 2024Ashurst Hayden Dam, USdaily rain13.0 mm (0.5 in)11.5 mm (0.5 in)49 years20 of 100 (Routine)
29 February 2024Ashurst Hayden Dam, USdaily rain2.3 mm (0.09 in)2.3 mm (0.09 in)68 years20 of 100 (Routine)
7 February 2024Ashurst Hayden Dam, USdaily rain13.2 mm (0.5 in)6.1 mm (0.24 in)54 years20 of 100 (Routine)
2 February 2024Ashurst Hayden Dam, USdaily rain21.3 mm (0.8 in)6.1 mm (0.24 in)28 years20 of 100 (Routine)
15 March 2023Ashurst Hayden Dam, USdaily rain22.9 mm (0.9 in)17.1 mm (0.7 in)24 years20 of 100 (Routine)
3 November 2022Ashurst Hayden Dam, USdaily rain5.3 mm (0.21 in)4.3 mm (0.17 in)35 years20 of 100 (Routine)
9 October 2022Ashurst Hayden Dam, USdaily rain43.2 mm (1.7 in)39.6 mm (1.6 in)61 years64 of 100 (Major)
8 October 2022Ashurst Hayden Dam, USdaily rain12.7 mm (0.5 in)0.3 mm (0.01 in)24 years13 of 100 (Routine)
21 September 2022Ashurst Hayden Dam, USdaily rain9.7 mm (0.38 in)6.9 mm (0.27 in)15 years17 of 100 (Routine)
4 August 2022Ashurst Hayden Dam, USdaily rain18.8 mm (0.7 in)1.8 mm (0.07 in)63 years20 of 100 (Routine)

Extremes by Year

1956 to 2026
Yearly extremes at Ashurst Hayden Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)68.6 mm (2.7 in)196133.0 mm (1.3 in)71
Wettest five days (Rx5day)106.4 mm (4.2 in)199047.7 mm (1.9 in)71
Longest dry spell (CDD)183 days201676 days71

Wettest day (Rx1day)

Wettest day (Rx1day) at Ashurst Hayden Dam by year The wettest day of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 68.6 mm (2.7 in) in 1961, marked on the chart; the median year is 33.0 mm (1.3 in). 0204060801960198020002020Record: 68.6 mm (2.7 in) in 1961
The wettest day of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 68.6 mm (2.7 in) in 1961, marked on the chart; the median year is 33.0 mm (1.3 in).
Wettest day (Rx1day) at Ashurst Hayden Dam by year
YearWettest day (Rx1day)
195642.4 mm (1.7 in)
195726.2 mm (1.0 in)
195830.2 mm (1.2 in)
195938.9 mm (1.5 in)
196016.8 mm (0.7 in)
196168.6 mm (2.7 in)
196223.1 mm (0.9 in)
196341.1 mm (1.6 in)
196428.7 mm (1.1 in)
196545.0 mm (1.8 in)
196631.5 mm (1.2 in)
196739.9 mm (1.6 in)
196828.4 mm (1.1 in)
196924.9 mm (1.0 in)
197036.3 mm (1.4 in)
197141.4 mm (1.6 in)
197259.7 mm (2.4 in)
197334.3 mm (1.4 in)
197434.3 mm (1.4 in)
197533.0 mm (1.3 in)
197620.8 mm (0.8 in)
197721.6 mm (0.9 in)
197842.4 mm (1.7 in)
197941.9 mm (1.6 in)
198038.1 mm (1.5 in)
198125.4 mm (1.0 in)
198239.4 mm (1.6 in)
198350.8 mm (2.0 in)
198436.1 mm (1.4 in)
198534.8 mm (1.4 in)
198630.5 mm (1.2 in)
198732.3 mm (1.3 in)
198827.9 mm (1.1 in)
198930.5 mm (1.2 in)
199048.3 mm (1.9 in)
199124.4 mm (1.0 in)
199229.5 mm (1.2 in)
199345.7 mm (1.8 in)
199433.0 mm (1.3 in)
199549.5 mm (1.9 in)
199625.9 mm (1.0 in)
199719.1 mm (0.8 in)
199829.5 mm (1.2 in)
199931.8 mm (1.3 in)
200039.1 mm (1.5 in)
200122.9 mm (0.9 in)
200228.4 mm (1.1 in)
200341.1 mm (1.6 in)
200429.7 mm (1.2 in)
200538.1 mm (1.5 in)
200650.8 mm (2.0 in)
200729.5 mm (1.2 in)
200861.5 mm (2.4 in)
200918.5 mm (0.7 in)
201050.8 mm (2.0 in)
201135.6 mm (1.4 in)
201225.4 mm (1.0 in)
201345.0 mm (1.8 in)
201437.6 mm (1.5 in)
201550.8 mm (2.0 in)
201617.5 mm (0.7 in)
201735.6 mm (1.4 in)
201810.9 mm (0.4 in)
201944.5 mm (1.8 in)
202021.6 mm (0.9 in)
202124.9 mm (1.0 in)
202243.2 mm (1.7 in)
202325.7 mm (1.0 in)
202421.3 mm (0.8 in)
202534.3 mm (1.4 in)
202630.5 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ashurst Hayden Dam by year The wettest five days of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 106.4 mm (4.2 in) in 1990, marked on the chart; the median year is 47.7 mm (1.9 in). 02550751001251960198020002020Record: 106.4 mm (4.2 in) in 1990
The wettest five days of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 106.4 mm (4.2 in) in 1990, marked on the chart; the median year is 47.7 mm (1.9 in).
Wettest five days (Rx5day) at Ashurst Hayden Dam by year
YearWettest five days (Rx5day)
195644.7 mm (1.8 in)
195733.7 mm (1.3 in)
195842.4 mm (1.7 in)
195954.7 mm (2.2 in)
196044.2 mm (1.7 in)
196172.4 mm (2.9 in)
196238.0 mm (1.5 in)
196366.7 mm (2.6 in)
196449.8 mm (2.0 in)
196595.5 mm (3.8 in)
196663.3 mm (2.5 in)
196799.5 mm (3.9 in)
196841.9 mm (1.6 in)
196933.1 mm (1.3 in)
197056.2 mm (2.2 in)
197141.4 mm (1.6 in)
197280.8 mm (3.2 in)
197336.1 mm (1.4 in)
197448.2 mm (1.9 in)
197552.1 mm (2.1 in)
197635.5 mm (1.4 in)
197724.9 mm (1.0 in)
197873.6 mm (2.9 in)
197947.7 mm (1.9 in)
198046.0 mm (1.8 in)
198161.5 mm (2.4 in)
198241.9 mm (1.6 in)
198376.2 mm (3.0 in)
198450.1 mm (2.0 in)
198547.5 mm (1.9 in)
198648.3 mm (1.9 in)
198769.8 mm (2.7 in)
198833.0 mm (1.3 in)
198932.3 mm (1.3 in)
1990106.4 mm (4.2 in)
199132.5 mm (1.3 in)
199264.8 mm (2.6 in)
1993104.9 mm (4.1 in)
199437.6 mm (1.5 in)
199560.7 mm (2.4 in)
199634.0 mm (1.3 in)
199729.6 mm (1.2 in)
199856.1 mm (2.2 in)
199936.4 mm (1.4 in)
200074.2 mm (2.9 in)
200140.9 mm (1.6 in)
200288.8 mm (3.5 in)
200350.0 mm (2.0 in)
200439.7 mm (1.6 in)
200556.9 mm (2.2 in)
2006102.4 mm (4.0 in)
200739.3 mm (1.5 in)
200836.1 mm (1.4 in)
200930.7 mm (1.2 in)
201081.3 mm (3.2 in)
201145.8 mm (1.8 in)
201244.2 mm (1.7 in)
201349.8 mm (2.0 in)
201465.3 mm (2.6 in)
201550.8 mm (2.0 in)
201635.0 mm (1.4 in)
201752.1 mm (2.1 in)
201810.9 mm (0.4 in)
201967.3 mm (2.6 in)
202025.1 mm (1.0 in)
202170.6 mm (2.8 in)
202256.4 mm (2.2 in)
202328.3 mm (1.1 in)
202438.6 mm (1.5 in)
202541.4 mm (1.6 in)
20269.1 mm (0.36 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ashurst Hayden Dam by year The longest dry spell of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 183 days in 2016, marked on the chart; the median year is 76 days. 0501001502001960198020002020Record: 183 days in 2016
The longest dry spell of the year at Ashurst Hayden Dam, 1956 to 2026. The record is 183 days in 2016, marked on the chart; the median year is 76 days.
Longest dry spell (CDD) at Ashurst Hayden Dam by year
YearLongest dry spell (CDD)
195675 days
195754 days
195875 days
195967 days
196077 days
196195 days
1962120 days
196348 days
196472 days
196540 days
196694 days
196748 days
196856 days
196973 days
197054 days
1971103 days
1972150 days
197390 days
1974108 days
197591 days
197665 days
197769 days
197869 days
197967 days
198059 days
198155 days
198255 days
198377 days
198491 days
198579 days
198699 days
198775 days
198880 days
198959 days
199056 days
1991113 days
199260 days
199375 days
199441 days
1995114 days
1996115 days
199744 days
199892 days
199931 days
200060 days
200148 days
200293 days
200398 days
2004100 days
200530 days
2006104 days
200770 days
200887 days
200992 days
201097 days
201176 days
201277 days
201394 days
201492 days
201546 days
2016183 days
201781 days
201829 days
201989 days
2020154 days
2021119 days
202279 days
202375 days
202479 days
202544 days
202655 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

59 years, 1956 to 2025

A day with at least 33.6 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 64.2 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Ashurst Hayden Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years33.6 mm (1.3 in)
5 years43.4 mm (1.7 in)
10 years49.2 mm (1.9 in)
25 years55.7 mm (2.2 in)
50 years60.2 mm (2.4 in)
100 years64.2 mm (2.5 in)Longer than the 59 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, 59 years of values from 1956 to 2025.

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: 68.6 mm (2.7 in) in 1961; 59.7 mm (2.4 in) in 1972; 50.8 mm (2.0 in) in 1983.

Download the Data

  • Data for Ashurst Hayden Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ashurst Hayden Dam 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 . Last revised (2026-10-14).