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Olaf Knolls Arizona Weather Records (USR0000AOLA)

Record envelope, standing records and threshold days for Olaf Knolls Arizona (USR0000AOLA), Arizona, United States, with 39 years of record.

Key Facts for Olaf Knolls Arizona

  • Olaf Knolls Arizona (USR0000AOLA) is a weather station in Arizona, United States at 36.51 latitude and -113.82 longitude, 884 m (2,900 ft) above sea level.
  • The station reports from 1985 to 2023, 39 years of record.
  • 1,464 records set at Olaf Knolls Arizona still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Olaf Knolls Arizona set a daily record high minimum temperature of 22.8 C (73.0 F) on 9 October 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, 36.51 latitude, -113.82 longitude.
  • Elevation: 884 m (2,900 ft).
  • Period of record: 1985 to 2023, 39 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

26 days at or beyond a record
Daily record high and record low at Olaf Knolls Arizona, with 2026 drawn through them The band shows the record high and record low for each calendar day at Olaf Knolls Arizona. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Olaf Knolls Arizona. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Olaf Knolls Arizona, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.0 C (77.0 F)-8.9 C (16.0 F)22.8 C (73.0 F)-0.6 C (30.9 F)
Feb27.8 C (82.0 F)-9.4 C (15.1 F)26.7 C (80.1 F)-0.6 C (30.9 F)
Mar35.6 C (96.1 F)-2.8 C (27.0 F)35.6 C (96.1 F)3.3 C (37.9 F)
Apr36.1 C (97.0 F)-0.6 C (30.9 F)31.7 C (89.1 F)6.7 C (44.1 F)
May41.7 C (107.1 F)1.1 C (34.0 F)40.0 C (104.0 F)7.8 C (46.0 F)
Jun46.7 C (116.1 F)5.6 C (42.1 F)41.1 C (106.0 F)18.9 C (66.0 F)
Jul46.7 C (116.1 F)17.2 C (63.0 F)44.4 C (111.9 F)20.0 C (68.0 F)
Aug45.0 C (113.0 F)16.7 C (62.1 F)44.4 C (111.9 F)18.9 C (66.0 F)
Sep48.3 C (118.9 F)3.3 C (37.9 F)40.6 C (105.1 F)16.1 C (61.0 F)
Oct40.0 C (104.0 F)-2.2 C (28.0 F)36.7 C (98.1 F)16.1 C (61.0 F)
Nov32.8 C (91.0 F)-5.0 C (23.0 F)n/an/a
Dec23.9 C (75.0 F)-13.9 C (7.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Olaf Knolls Arizona by the year they were set 1,464 records at Olaf Knolls Arizona still stand. 1990 holds the most, with 76. 0204060801985: 401986: 511987: 331988: 331989: 571990: 761991: 511992: 271993: 191994: 301995: 541996: 561997: 141998: 391999: 382000: 492001: 232002: 332003: 462004: 242005: 202006: 302007: 352008: 262009: 282010: 262011: 472012: 362013: 342014: 132015: 232016: 172017: 432018: 92019: 292020: 362021: 372022: 202023: 312024: 492025: 332026: 49198519901995200020052010201520202025
1,464 records at Olaf Knolls Arizona still stand. 1990 holds the most, with 76.
Standing records at Olaf Knolls Arizona by the year they were set
Year setStanding records
198540
198651
198733
198833
198957
199076
199151
199227
199319
199430
199554
199656
199714
199839
199938
200049
200123
200233
200346
200424
200520
200630
200735
200826
200928
201026
201147
201236
201334
201413
201523
201617
201743
20189
201929
202036
202137
202220
202331
202449
202533
202649

Period of Record Coverage

1985 to 2026
Days with data per year at Olaf Knolls Arizona 42 years of record at Olaf Knolls Arizona, 1985 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1985, 1987, 2026. 1985: 210 of 365 days1986: 355 of 365 days1987: 127 of 365 days1988: 359 of 366 days1989: 357 of 365 days1990: 359 of 365 days1991: 361 of 365 days1992: 363 of 366 days1993: 351 of 365 days1994: 356 of 365 days1995: 363 of 365 days1996: 366 of 366 days1997: 362 of 365 days1998: 364 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 345 of 366 days2009: 365 of 365 days2010: 358 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 363 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 346 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days1990200020102020
42 years of record at Olaf Knolls Arizona, 1985 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1985, 1987, 2026.
Days with data per year at Olaf Knolls Arizona
YearDays with dataShare of yearComplete
198521058%No
198635597%Yes
198712735%No
198835998%Yes
198935798%Yes
199035998%Yes
199136199%Yes
199236399%Yes
199335196%Yes
199435698%Yes
199536399%Yes
1996366100%Yes
199736299%Yes
1998364100%Yes
1999364100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006364100%Yes
2007365100%Yes
200834594%Yes
2009365100%Yes
201035898%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
201636399%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
202234695%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Olaf Knolls Arizona
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Olaf Knolls Arizona, USdaily high min (Provisional)22.8 C (73.0 F)1.1 C (2.0 F)11 years9 of 100 (Routine)
18 September 2026Olaf Knolls Arizona, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie25 years2 of 100 (Routine)
17 September 2026Olaf Knolls Arizona, USdaily high min (Provisional)25.0 C (77.0 F)1.1 C (2.0 F)25 years14 of 100 (Routine)
15 September 2026Olaf Knolls Arizona, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie36 years3 of 100 (Routine)
14 September 2026Olaf Knolls Arizona, USdaily high min (Provisional)25.6 C (78.1 F)1.2 C (2.2 F)36 years17 of 100 (Routine)
13 September 2026Olaf Knolls Arizona, USdaily high min (Provisional)26.1 C (79.0 F)1.1 C (2.0 F)31 years16 of 100 (Routine)
12 September 2026Olaf Knolls Arizona, USdaily high min (Provisional)26.1 C (79.0 F)0.5 C (0.9 F)36 years15 of 100 (Routine)
11 September 2026Olaf Knolls Arizona, USdaily high min (Provisional)27.2 C (81.0 F)2.2 C (4.0 F)8 years12 of 100 (Routine)
28 August 2026Olaf Knolls Arizona, USdaily high min (Provisional)30.0 C (86.0 F)1.1 C (2.0 F)28 years16 of 100 (Routine)
27 August 2026Olaf Knolls Arizona, USdaily high min (Provisional)30.6 C (87.1 F)2.8 C (5.0 F)15 years19 of 100 (Routine)
27 August 2026Olaf Knolls Arizona, USdaily high max (Tie, Provisional)42.2 C (108.0 F)tie24 years2 of 100 (Routine)
21 August 2026Olaf Knolls Arizona, USdaily high min (Provisional)28.9 C (84.0 F)0.6 C (1.1 F)0 years6 of 100 (Routine)
14 August 2026Olaf Knolls Arizona, USdaily low max30.6 C (87.1 F)1.1 C (2.0 F)36 years17 of 100 (Routine)
14 August 2026Olaf Knolls Arizona, USdaily low min (Tie)19.4 C (66.9 F)tie20 years2 of 100 (Routine)
13 August 2026Olaf Knolls Arizona, USdaily low max33.3 C (91.9 F)1.1 C (2.0 F)12 years10 of 100 (Routine)
10 August 2026Olaf Knolls Arizona, USdaily high min28.9 C (84.0 F)1.6 C (2.9 F)1 year10 of 100 (Routine)
9 August 2026Olaf Knolls Arizona, USdaily high min29.4 C (84.9 F)1.6 C (2.9 F)13 years14 of 100 (Routine)
8 August 2026Olaf Knolls Arizona, USdaily high min28.9 C (84.0 F)1.1 C (2.0 F)28 years16 of 100 (Routine)
3 August 2026Olaf Knolls Arizona, USdaily high max43.9 C (111.0 F)1.7 C (3.1 F)31 years18 of 100 (Routine)
2 August 2026Olaf Knolls Arizona, USdaily high max44.4 C (111.9 F)1.1 C (2.0 F)32 years16 of 100 (Routine)

Climate Trend

37 complete years, 1986 to 2025
Annual mean temperature at Olaf Knolls Arizona as warming stripes, 1986 to 2025 One stripe for each of 37 complete years at Olaf Knolls Arizona, 1986 to 2025. Blue stripes are years cooler than the station's own mean of 19.6 C (67.3 F); red stripes are warmer. The coolest year was 1998, at 18.2 C (64.7 F), and the warmest was 2025, at 20.8 C (69.4 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1986: 19.0 C, -0.6 C from the station mean1988: 19.2 C, -0.4 C from the station mean1989: 19.5 C, -0.1 C from the station mean1990: 19.4 C, -0.2 C from the station mean1991: 18.2 C, -1.4 C from the station mean1992: 19.0 C, -0.7 C from the station mean1993: 18.5 C, -1.2 C from the station mean1994: 19.1 C, -0.5 C from the station mean1995: 19.7 C, +0.1 C from the station mean1996: 20.6 C, +1.0 C from the station mean1997: 19.5 C, -0.1 C from the station mean1998: 18.2 C, -1.5 C from the station mean1999: 19.5 C, -0.2 C from the station mean2000: 20.0 C, +0.3 C from the station mean2001: 19.8 C, +0.1 C from the station mean2002: 19.8 C, +0.2 C from the station mean2003: 20.0 C, +0.4 C from the station mean2004: 19.4 C, -0.2 C from the station mean2005: 19.4 C, -0.2 C from the station mean2006: 19.8 C, +0.1 C from the station mean2007: 20.1 C, +0.5 C from the station mean2009: 19.6 C, 0.0 C from the station mean2010: 19.2 C, -0.5 C from the station mean2011: 18.4 C, -1.2 C from the station mean2012: 20.2 C, +0.5 C from the station mean2013: 19.4 C, -0.3 C from the station mean2014: 20.4 C, +0.8 C from the station mean2015: 20.2 C, +0.6 C from the station mean2016: 20.3 C, +0.7 C from the station mean2017: 20.5 C, +0.9 C from the station mean2018: 20.4 C, +0.7 C from the station mean2019: 18.8 C, -0.8 C from the station mean2020: 20.5 C, +0.8 C from the station mean2021: 20.3 C, +0.7 C from the station mean2023: 19.1 C, -0.6 C from the station mean2024: 20.8 C, +1.1 C from the station mean2025: 20.8 C, +1.1 C from the station mean198619901995200020052010201520202025
One stripe for each of 37 complete years at Olaf Knolls Arizona, 1986 to 2025. Blue stripes are years cooler than the station's own mean of 19.6 C (67.3 F); red stripes are warmer. The coolest year was 1998, at 18.2 C (64.7 F), and the warmest was 2025, at 20.8 C (69.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Olaf Knolls Arizona as warming stripes, 1986 to 2025
YearAnnual mean temperatureDifference from the station mean
198619.0 C-0.61 C
198819.2 C-0.39 C
198919.5 C-0.11 C
199019.4 C-0.22 C
199118.2 C-1.40 C
199219.0 C-0.67 C
199318.5 C-1.17 C
199419.1 C-0.50 C
199519.7 C+0.11 C
199620.6 C+1.00 C
199719.5 C-0.11 C
199818.2 C-1.46 C
199919.5 C-0.18 C
200020.0 C+0.34 C
200119.8 C+0.14 C
200219.8 C+0.17 C
200320.0 C+0.40 C
200419.4 C-0.24 C
200519.4 C-0.24 C
200619.8 C+0.14 C
200720.1 C+0.49 C
200919.6 C+0.01 C
201019.2 C-0.47 C
201118.4 C-1.23 C
201220.2 C+0.53 C
201319.4 C-0.26 C
201420.4 C+0.81 C
201520.2 C+0.58 C
201620.3 C+0.66 C
201720.5 C+0.89 C
201820.4 C+0.72 C
201918.8 C-0.80 C
202020.5 C+0.82 C
202120.3 C+0.67 C
202319.1 C-0.55 C
202420.8 C+1.12 C
202520.8 C+1.13 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1986 to 2025. In Fahrenheit: 0.6 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Olaf Knolls Arizona
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.5) per decade0.6 F (0.2 to 0.9) per decade1986 to 202537Rise
Mean daily maximum0.4 C (0.2 to 0.6) per decade0.7 F (0.3 to 1.0) per decade1986 to 202537Rise
Mean daily minimum0.3 C (0.1 to 0.4) per decade0.5 F (0.1 to 0.8) per decade1986 to 202537Rise

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

1985 to 2026
Yearly extremes at Olaf Knolls Arizona: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)48.3 C (118.9 F)199043.6 C (110.5 F)42
Coldest night (TNn)-13.9 C (7.0 F)1990-3.9 C (25.0 F)42

Hottest day (TXx)

Hottest day (TXx) at Olaf Knolls Arizona by year The hottest day of the year at Olaf Knolls Arizona, 1985 to 2026. The record is 48.3 C (118.9 F) in 1990, marked on the chart; the median year is 43.6 C (110.5 F). 30354045501990200020102020Record: 48.3 C (118.9 F) in 1990
The hottest day of the year at Olaf Knolls Arizona, 1985 to 2026. The record is 48.3 C (118.9 F) in 1990, marked on the chart; the median year is 43.6 C (110.5 F).
Hottest day (TXx) at Olaf Knolls Arizona by year
YearHottest day (TXx)
198544.4 C (111.9 F)
198641.7 C (107.1 F)
198733.3 C (91.9 F)
198842.2 C (108.0 F)
198943.3 C (109.9 F)
199048.3 C (118.9 F)
199142.2 C (108.0 F)
199241.7 C (107.1 F)
199343.3 C (109.9 F)
199443.3 C (109.9 F)
199543.3 C (109.9 F)
199645.0 C (113.0 F)
199742.2 C (108.0 F)
199846.1 C (115.0 F)
199942.8 C (109.0 F)
200043.3 C (109.9 F)
200143.3 C (109.9 F)
200244.4 C (111.9 F)
200345.0 C (113.0 F)
200443.3 C (109.9 F)
200545.6 C (114.1 F)
200644.4 C (111.9 F)
200746.7 C (116.1 F)
200842.8 C (109.0 F)
200945.0 C (113.0 F)
201043.9 C (111.0 F)
201142.8 C (109.0 F)
201245.6 C (114.1 F)
201346.7 C (116.1 F)
201442.2 C (108.0 F)
201542.8 C (109.0 F)
201643.9 C (111.0 F)
201745.6 C (114.1 F)
201843.9 C (111.0 F)
201942.2 C (108.0 F)
202045.0 C (113.0 F)
202146.2 C (115.2 F)
202243.3 C (109.9 F)
202345.6 C (114.1 F)
202445.8 C (114.4 F)
202542.8 C (109.0 F)
202644.4 C (111.9 F)

Coldest night (TNn)

Coldest night (TNn) at Olaf Knolls Arizona by year The coldest night of the year at Olaf Knolls Arizona, 1985 to 2026. The record is -13.9 C (7.0 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F). -15-10-501990200020102020Record: -13.9 C (7.0 F) in 1990
The coldest night of the year at Olaf Knolls Arizona, 1985 to 2026. The record is -13.9 C (7.0 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Olaf Knolls Arizona by year
YearColdest night (TNn)
1985-4.4 C (24.1 F)
1986-3.3 C (26.1 F)
1987-5.6 C (21.9 F)
1988-6.1 C (21.0 F)
1989-9.4 C (15.1 F)
1990-13.9 C (7.0 F)
1991-2.8 C (27.0 F)
1992-2.8 C (27.0 F)
1993-4.4 C (24.1 F)
1994-5.0 C (23.0 F)
1995-0.6 C (30.9 F)
1996-2.8 C (27.0 F)
1997-3.9 C (25.0 F)
1998-3.3 C (26.1 F)
1999-1.7 C (28.9 F)
2000-1.1 C (30.0 F)
2001-3.3 C (26.1 F)
2002-5.0 C (23.0 F)
2003-3.9 C (25.0 F)
2004-2.2 C (28.0 F)
2005-2.2 C (28.0 F)
2006-3.9 C (25.0 F)
2007-8.9 C (16.0 F)
2008-3.9 C (25.0 F)
2009-4.4 C (24.1 F)
2010-6.1 C (21.0 F)
2011-7.8 C (18.0 F)
2012-1.7 C (28.9 F)
2013-7.2 C (19.0 F)
2014-2.8 C (27.0 F)
2015-3.3 C (26.1 F)
2016-3.3 C (26.1 F)
2017-2.2 C (28.0 F)
2018-3.3 C (26.1 F)
2019-5.6 C (21.9 F)
2020-4.8 C (23.4 F)
2021-1.7 C (28.9 F)
2022-5.6 C (21.9 F)
2023-6.1 C (21.0 F)
2024-4.3 C (24.3 F)
2025-3.9 C (25.0 F)
2026-0.6 C (30.9 F)

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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Olaf Knolls Arizona falls on 28 February and the median first autumn frost on 29 November, which leaves a median of 281 days between them.

Fitted over all years, the growing season changes by +2.4 days per decade at this station.

Frost dates and growing season at Olaf Knolls Arizona
MeasureMedian, all yearsEarliest periodRecent period (1990 to 2021)Recent against earliestFitted trend
Last spring frost28 Februaryn/a28 Februaryn/a-2.2 days per decade
First autumn frost29 Novembern/a29 Novembern/a+0.2 days per decade
Growing days281 daysn/a278 daysn/a+2.4 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 Olaf Knolls Arizona standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Olaf Knolls Arizona 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 . Last revised (2026-10-15).