Built 2026-10-14 (14 October 2026)

Alabaster Shelby Co AP ASOS Weather Records (USW00053864)

Record envelope, standing records and threshold days for Alabaster Shelby Co AP ASOS (USW00053864), Alabama, United States, with 32 years of record.

Key Facts for Alabaster Shelby Co AP ASOS

  • Alabaster Shelby Co AP ASOS (USW00053864) is a weather station in Alabama, United States at 33.18 latitude and -86.78 longitude, 173 m (566 ft) above sea level.
  • The station reports from 1995 to 2026, 32 years of record.
  • 1,464 records set at Alabaster Shelby Co AP ASOS still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Alabaster Shelby Co AP ASOS set a daily record low maximum temperature of 19.4 C (66.9 F) on 10 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Alabama, United States, 33.18 latitude, -86.78 longitude.
  • Elevation: 173 m (566 ft).
  • Period of record: 1995 to 2026, 32 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

47 days at or beyond a record
Daily record high and record low at Alabaster Shelby Co AP ASOS, with 2026 drawn through them The band shows the record high and record low for each calendar day at Alabaster Shelby Co AP ASOS. The lines show the 2026 daily maximum and minimum. 47 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 Alabaster Shelby Co AP ASOS. The lines show the 2026 daily maximum and minimum. 47 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Alabaster Shelby Co AP ASOS, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-12.8 C (9.0 F)23.9 C (75.0 F)-10.0 C (14.0 F)
Feb28.3 C (82.9 F)-15.6 C (3.9 F)27.2 C (81.0 F)-9.4 C (15.1 F)
Mar30.6 C (87.1 F)-10.0 C (14.0 F)29.4 C (84.9 F)-2.8 C (27.0 F)
Apr32.2 C (90.0 F)-2.2 C (28.0 F)32.2 C (90.0 F)3.9 C (39.0 F)
May35.6 C (96.1 F)2.8 C (37.0 F)33.3 C (91.9 F)5.6 C (42.1 F)
Jun40.6 C (105.1 F)9.4 C (48.9 F)37.2 C (99.0 F)13.3 C (55.9 F)
Jul40.0 C (104.0 F)13.3 C (55.9 F)37.2 C (99.0 F)21.1 C (70.0 F)
Aug40.6 C (105.1 F)12.8 C (55.0 F)36.1 C (97.0 F)20.6 C (69.1 F)
Sep38.3 C (100.9 F)5.6 C (42.1 F)37.2 C (99.0 F)12.2 C (54.0 F)
Oct38.3 C (100.9 F)-0.6 C (30.9 F)33.3 C (91.9 F)13.3 C (55.9 F)
Nov31.7 C (89.1 F)-6.1 C (21.0 F)n/an/a
Dec27.2 C (81.0 F)-12.1 C (10.2 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Alabaster Shelby Co AP ASOS by the year they were set 1,464 records at Alabaster Shelby Co AP ASOS still stand. 1996 holds the most, with 99. 02550751001995: 771996: 991997: 731998: 441999: 542000: 772001: 392002: 542003: 332004: 432005: 322006: 342007: 602008: 382009: 332010: 502011: 592012: 482013: 442014: 252015: 422016: 362017: 452018: 302019: 432020: 362021: 292022: 312023: 302024: 392025: 502026: 3719951999200320072011201520192023
1,464 records at Alabaster Shelby Co AP ASOS still stand. 1996 holds the most, with 99.
Standing records at Alabaster Shelby Co AP ASOS by the year they were set
Year setStanding records
199577
199699
199773
199844
199954
200077
200139
200254
200333
200443
200532
200634
200760
200838
200933
201050
201159
201248
201344
201425
201542
201636
201745
201830
201943
202036
202129
202231
202330
202439
202550
202637

Wettest Day of Each Month

May: 158.8 mm (6.3 in)
Record daily precipitation for each month at Alabaster Shelby Co AP ASOS The wettest day on record for each calendar month at Alabaster Shelby Co AP ASOS. The most was 158.8 mm (6.3 in) on 4 May 2021. 050100150200 Jan: 101.6 mm (4.0 in), 7 January 1998 Jan Feb: 91.4 mm (3.6 in), 10 February 2020 Feb Mar: 124.2 mm (4.9 in), 10 March 2010 Mar Apr: 121.2 mm (4.8 in), 19 April 2020 Apr May: 158.8 mm (6.3 in), 4 May 2021 May Jun: 108.2 mm (4.3 in), 8 June 2022 Jun Jul: 122.2 mm (4.8 in), 31 July 2012 Jul Aug: 140.2 mm (5.5 in), 25 August 2008 Aug Sep: 118.6 mm (4.7 in), 22 September 2002 Sep Oct: 105.7 mm (4.2 in), 4 October 1995 Oct Nov: 103.6 mm (4.1 in), 10 November 2009 Nov Dec: 95.8 mm (3.8 in), 8 December 2013 Dec
The wettest day on record for each calendar month at Alabaster Shelby Co AP ASOS. The most was 158.8 mm (6.3 in) on 4 May 2021.
Record daily precipitation for each month at Alabaster Shelby Co AP ASOS
MonthRecord daily precipitation (mm)Date
Jan101.6 mm (4.0 in)7 January 1998
Feb91.4 mm (3.6 in)10 February 2020
Mar124.2 mm (4.9 in)10 March 2010
Apr121.2 mm (4.8 in)19 April 2020
May158.8 mm (6.3 in)4 May 2021
Jun108.2 mm (4.3 in)8 June 2022
Jul122.2 mm (4.8 in)31 July 2012
Aug140.2 mm (5.5 in)25 August 2008
Sep118.6 mm (4.7 in)22 September 2002
Oct105.7 mm (4.2 in)4 October 1995
Nov103.6 mm (4.1 in)10 November 2009
Dec95.8 mm (3.8 in)8 December 2013

Period of Record Coverage

1995 to 2026
Days with data per year at Alabaster Shelby Co AP ASOS 32 years of record at Alabaster Shelby Co AP ASOS, 1995 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1995, 2026. 1995: 274 of 365 days1996: 365 of 366 days1997: 361 of 365 days1998: 361 of 365 days1999: 359 of 365 days2000: 365 of 366 days2001: 362 of 365 days2002: 362 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 365 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 364 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 364 of 365 days2026: 283 of 365 days1995200020052010201520202025
32 years of record at Alabaster Shelby Co AP ASOS, 1995 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1995, 2026.
Days with data per year at Alabaster Shelby Co AP ASOS
YearDays with dataShare of yearComplete
199527475%No
1996365100%Yes
199736199%Yes
199836199%Yes
199935998%Yes
2000365100%Yes
200136299%Yes
200236299%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008365100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017364100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021364100%Yes
2022364100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202628378%No

Latest Records

20
Latest records at Alabaster Shelby Co AP ASOS
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026Alabaster Shelby Co AP ASOS, USdaily low max (Provisional)19.4 C (66.9 F)0.6 C (1.1 F)25 years11 of 100 (Routine)
9 October 2026Alabaster Shelby Co AP ASOS, USdaily rain (Provisional)38.6 mm (1.5 in)28.4 mm (1.1 in)11 years22 of 100 (Routine)
3 October 2026Alabaster Shelby Co AP ASOS, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie7 years1 of 100 (Routine)
2 October 2026Alabaster Shelby Co AP ASOS, USdaily rain (Provisional)20.1 mm (0.8 in)7.1 mm (0.28 in)4 years8 of 100 (Routine)
20 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Tie, Provisional)36.1 C (97.0 F)tie0 years0 of 100 (Routine)
19 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)37.2 C (99.0 F)1.1 C (2.0 F)0 years6 of 100 (Routine)
16 September 2026Alabaster Shelby Co AP ASOS, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie16 years2 of 100 (Routine)
15 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)36.7 C (98.1 F)0.6 C (1.1 F)9 years6 of 100 (Routine)
14 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)36.7 C (98.1 F)1.7 C (3.1 F)9 years9 of 100 (Routine)
8 September 2026Alabaster Shelby Co AP ASOS, USdaily high min (Provisional)23.9 C (75.0 F)1.7 C (3.1 F)24 years14 of 100 (Routine)
7 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Tie, Provisional)36.1 C (97.0 F)tie7 years1 of 100 (Routine)
6 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)37.2 C (99.0 F)0.5 C (0.9 F)27 years12 of 100 (Routine)
6 September 2026Alabaster Shelby Co AP ASOS, USmonthly high min (Tie, Provisional)24.4 C (75.9 F)tie19 years4 of 100 (Routine)
5 September 2026Alabaster Shelby Co AP ASOS, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie25 years2 of 100 (Routine)
4 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)36.7 C (98.1 F)0.6 C (1.1 F)25 years11 of 100 (Routine)
4 September 2026Alabaster Shelby Co AP ASOS, USdaily high min (Provisional)23.9 C (75.0 F)1.1 C (2.0 F)13 years10 of 100 (Routine)
3 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)37.2 C (99.0 F)1.6 C (2.9 F)7 years9 of 100 (Routine)
3 September 2026Alabaster Shelby Co AP ASOS, USdaily high min (Tie, Provisional)23.3 C (73.9 F)tie17 years2 of 100 (Routine)
2 September 2026Alabaster Shelby Co AP ASOS, USdaily high max (Provisional)36.7 C (98.1 F)0.6 C (1.1 F)15 years8 of 100 (Routine)
31 August 2026Alabaster Shelby Co AP ASOS, USdaily high max (Tie, Provisional)35.0 C (95.0 F)tie15 years1 of 100 (Routine)

Climate Trend

30 complete years, 1996 to 2025
Annual mean temperature at Alabaster Shelby Co AP ASOS as warming stripes, 1996 to 2025 One stripe for each of 30 complete years at Alabaster Shelby Co AP ASOS, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 17.9 C (64.2 F); red stripes are warmer. The coolest year was 1996, at 15.9 C (60.6 F), and the warmest was 2024, at 19.0 C (66.2 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1996: 15.9 C, -2.0 C from the station mean1997: 16.0 C, -1.9 C from the station mean1998: 18.1 C, +0.2 C from the station mean1999: 18.1 C, +0.2 C from the station mean2000: 17.7 C, -0.2 C from the station mean2001: 17.3 C, -0.6 C from the station mean2002: 18.0 C, +0.1 C from the station mean2003: 17.3 C, -0.6 C from the station mean2004: 17.7 C, -0.2 C from the station mean2005: 17.5 C, -0.4 C from the station mean2006: 18.1 C, +0.2 C from the station mean2007: 18.2 C, +0.3 C from the station mean2008: 17.5 C, -0.4 C from the station mean2009: 17.0 C, -0.9 C from the station mean2010: 17.2 C, -0.7 C from the station mean2011: 17.8 C, -0.1 C from the station mean2012: 18.8 C, +0.9 C from the station mean2013: 17.4 C, -0.5 C from the station mean2014: 17.3 C, -0.6 C from the station mean2015: 18.5 C, +0.6 C from the station mean2016: 19.0 C, +1.1 C from the station mean2017: 18.8 C, +0.9 C from the station mean2018: 18.2 C, +0.3 C from the station mean2019: 18.7 C, +0.8 C from the station mean2020: 18.4 C, +0.5 C from the station mean2021: 18.1 C, +0.2 C from the station mean2022: 18.3 C, +0.4 C from the station mean2023: 18.8 C, +0.9 C from the station mean2024: 19.0 C, +1.1 C from the station mean2025: 18.3 C, +0.4 C from the station mean1996200020052010201520202025
One stripe for each of 30 complete years at Alabaster Shelby Co AP ASOS, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 17.9 C (64.2 F); red stripes are warmer. The coolest year was 1996, at 15.9 C (60.6 F), and the warmest was 2024, at 19.0 C (66.2 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Alabaster Shelby Co AP ASOS as warming stripes, 1996 to 2025
YearAnnual mean temperatureDifference from the station mean
199615.9 C-2.00 C
199716.0 C-1.91 C
199818.1 C+0.17 C
199918.1 C+0.18 C
200017.7 C-0.15 C
200117.3 C-0.62 C
200218.0 C+0.09 C
200317.3 C-0.56 C
200417.7 C-0.22 C
200517.5 C-0.35 C
200618.1 C+0.18 C
200718.2 C+0.34 C
200817.5 C-0.43 C
200917.0 C-0.85 C
201017.2 C-0.72 C
201117.8 C-0.13 C
201218.8 C+0.93 C
201317.4 C-0.52 C
201417.3 C-0.60 C
201518.5 C+0.59 C
201619.0 C+1.07 C
201718.8 C+0.88 C
201818.2 C+0.35 C
201918.7 C+0.80 C
202018.4 C+0.49 C
202118.1 C+0.16 C
202218.3 C+0.45 C
202318.8 C+0.94 C
202419.0 C+1.10 C
202518.3 C+0.43 C

The annual mean temperature here has risen by 0.6 C (0.3 to 0.8) per decade over 1996 to 2025. In Fahrenheit: 1.1 F (0.6 to 1.5) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Alabaster Shelby Co AP ASOS
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.6 C (0.3 to 0.8) per decade1.1 F (0.6 to 1.5) per decade1996 to 202530Rise
Mean daily maximum0.4 C (0.1 to 0.7) per decade0.8 F (0.2 to 1.3) per decade1996 to 202530Rise
Mean daily minimum0.7 C (0.5 to 1.0) per decade1.3 F (0.9 to 1.8) per decade1996 to 202530Rise

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

1995 to 2026
Yearly extremes at Alabaster Shelby Co AP ASOS: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)200037.2 C (99.0 F)32
Coldest night (TNn)-15.6 C (3.9 F)1996-9.1 C (15.6 F)32
Wettest day (Rx1day)158.8 mm (6.3 in)202188.6 mm (3.5 in)32
Wettest five days (Rx5day)225.5 mm (8.9 in)2008140.5 mm (5.5 in)32
Longest dry spell (CDD)71 days201622 days32

Hottest day (TXx)

Hottest day (TXx) at Alabaster Shelby Co AP ASOS by year The hottest day of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 40.6 C (105.1 F) in 2000, marked on the chart; the median year is 37.2 C (99.0 F). 323436384042200020102020Record: 40.6 C (105.1 F) in 2000
The hottest day of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 40.6 C (105.1 F) in 2000, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Alabaster Shelby Co AP ASOS by year
YearHottest day (TXx)
199538.3 C (100.9 F)
199635.6 C (96.1 F)
199735.0 C (95.0 F)
199837.2 C (99.0 F)
199938.9 C (102.0 F)
200040.6 C (105.1 F)
200134.4 C (93.9 F)
200237.2 C (99.0 F)
200333.9 C (93.0 F)
200435.0 C (95.0 F)
200535.0 C (95.0 F)
200637.8 C (100.0 F)
200740.6 C (105.1 F)
200837.2 C (99.0 F)
200935.6 C (96.1 F)
201037.2 C (99.0 F)
201138.3 C (100.9 F)
201240.6 C (105.1 F)
201333.9 C (93.0 F)
201436.1 C (97.0 F)
201536.1 C (97.0 F)
201637.2 C (99.0 F)
201735.0 C (95.0 F)
201835.0 C (95.0 F)
201938.9 C (102.0 F)
202035.6 C (96.1 F)
202134.4 C (93.9 F)
202236.1 C (97.0 F)
202338.3 C (100.9 F)
202439.4 C (102.9 F)
202537.2 C (99.0 F)
202637.2 C (99.0 F)

Coldest night (TNn)

Coldest night (TNn) at Alabaster Shelby Co AP ASOS by year The coldest night of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is -15.6 C (3.9 F) in 1996, marked on the chart; the median year is -9.1 C (15.6 F). -20-15-10-50200020102020Record: -15.6 C (3.9 F) in 1996
The coldest night of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is -15.6 C (3.9 F) in 1996, marked on the chart; the median year is -9.1 C (15.6 F).
Coldest night (TNn) at Alabaster Shelby Co AP ASOS by year
YearColdest night (TNn)
1995-10.0 C (14.0 F)
1996-15.6 C (3.9 F)
1997-12.8 C (9.0 F)
1998-6.7 C (19.9 F)
1999-12.2 C (10.0 F)
2000-11.1 C (12.0 F)
2001-9.4 C (15.1 F)
2002-7.2 C (19.0 F)
2003-12.2 C (10.0 F)
2004-7.2 C (19.0 F)
2005-6.7 C (19.9 F)
2006-7.2 C (19.0 F)
2007-7.2 C (19.0 F)
2008-7.8 C (18.0 F)
2009-9.4 C (15.1 F)
2010-10.6 C (12.9 F)
2011-8.3 C (17.1 F)
2012-6.1 C (21.0 F)
2013-5.5 C (22.1 F)
2014-12.7 C (9.1 F)
2015-11.6 C (11.1 F)
2016-5.5 C (22.1 F)
2017-7.7 C (18.1 F)
2018-12.1 C (10.2 F)
2019-5.5 C (22.1 F)
2020-5.5 C (22.1 F)
2021-8.8 C (16.2 F)
2022-12.1 C (10.2 F)
2023-3.8 C (25.2 F)
2024-11.6 C (11.1 F)
2025-10.5 C (13.1 F)
2026-10.0 C (14.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Alabaster Shelby Co AP ASOS by year The wettest day of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 158.8 mm (6.3 in) in 2021, marked on the chart; the median year is 88.6 mm (3.5 in). 50100150200200020102020Record: 158.8 mm (6.3 in) in 2021
The wettest day of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 158.8 mm (6.3 in) in 2021, marked on the chart; the median year is 88.6 mm (3.5 in).
Wettest day (Rx1day) at Alabaster Shelby Co AP ASOS by year
YearWettest day (Rx1day)
1995105.7 mm (4.2 in)
199678.0 mm (3.1 in)
199768.1 mm (2.7 in)
1998101.6 mm (4.0 in)
199965.8 mm (2.6 in)
200085.1 mm (3.4 in)
200188.6 mm (3.5 in)
2002118.6 mm (4.7 in)
200388.6 mm (3.5 in)
200467.3 mm (2.6 in)
200580.5 mm (3.2 in)
2006115.3 mm (4.5 in)
200755.1 mm (2.2 in)
2008140.2 mm (5.5 in)
2009103.6 mm (4.1 in)
2010124.2 mm (4.9 in)
201179.8 mm (3.1 in)
2012122.2 mm (4.8 in)
201395.8 mm (3.8 in)
201484.3 mm (3.3 in)
2015101.3 mm (4.0 in)
201655.4 mm (2.2 in)
201773.2 mm (2.9 in)
2018100.3 mm (3.9 in)
201974.4 mm (2.9 in)
2020121.2 mm (4.8 in)
2021158.8 mm (6.3 in)
2022108.2 mm (4.3 in)
202366.5 mm (2.6 in)
202476.5 mm (3.0 in)
202588.6 mm (3.5 in)
202651.3 mm (2.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Alabaster Shelby Co AP ASOS by year The wettest five days of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 225.5 mm (8.9 in) in 2008, marked on the chart; the median year is 140.5 mm (5.5 in). 50100150200250200020102020Record: 225.5 mm (8.9 in) in 2008
The wettest five days of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 225.5 mm (8.9 in) in 2008, marked on the chart; the median year is 140.5 mm (5.5 in).
Wettest five days (Rx5day) at Alabaster Shelby Co AP ASOS by year
YearWettest five days (Rx5day)
1995183.7 mm (7.2 in)
1996141.7 mm (5.6 in)
1997109.7 mm (4.3 in)
1998127.5 mm (5.0 in)
1999163.9 mm (6.5 in)
2000152.4 mm (6.0 in)
2001154.4 mm (6.1 in)
2002203.7 mm (8.0 in)
2003144.1 mm (5.7 in)
2004127.0 mm (5.0 in)
2005157.0 mm (6.2 in)
2006125.0 mm (4.9 in)
2007137.6 mm (5.4 in)
2008225.5 mm (8.9 in)
2009141.1 mm (5.6 in)
2010158.5 mm (6.2 in)
2011152.8 mm (6.0 in)
2012133.6 mm (5.3 in)
2013136.8 mm (5.4 in)
2014125.2 mm (4.9 in)
2015126.7 mm (5.0 in)
201690.7 mm (3.6 in)
2017171.6 mm (6.8 in)
2018134.3 mm (5.3 in)
2019139.9 mm (5.5 in)
2020157.0 mm (6.2 in)
2021203.7 mm (8.0 in)
2022176.5 mm (6.9 in)
2023101.4 mm (4.0 in)
2024120.2 mm (4.7 in)
2025106.4 mm (4.2 in)
202692.7 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Alabaster Shelby Co AP ASOS by year The longest dry spell of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 71 days in 2016, marked on the chart; the median year is 22 days. 020406080200020102020Record: 71 days in 2016
The longest dry spell of the year at Alabaster Shelby Co AP ASOS, 1995 to 2026. The record is 71 days in 2016, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Alabaster Shelby Co AP ASOS by year
YearLongest dry spell (CDD)
199515 days
199624 days
199715 days
199825 days
199917 days
200024 days
200137 days
200219 days
200313 days
200422 days
200525 days
200621 days
200720 days
200822 days
200919 days
201016 days
201126 days
201223 days
201313 days
201415 days
201513 days
201671 days
201718 days
201819 days
201935 days
202023 days
202115 days
202232 days
202325 days
202439 days
202523 days
202625 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

30 years with a frost

Across 30 years with a frost, the median last spring frost at Alabaster Shelby Co AP ASOS falls on 16 March and the median first autumn frost on 15 November, which leaves a median of 243 days between them.

Fitted over all years, the growing season changes by +9.9 days per decade at this station.

Frost dates and growing season at Alabaster Shelby Co AP ASOS
MeasureMedian, all yearsEarliest periodRecent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost16 Marchn/a16 Marchn/a-6.5 days per decade
First autumn frost15 Novembern/a15 Novembern/a+3.4 days per decade
Growing days243 daysn/a243 daysn/a+9.9 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

30 years, 1996 to 2025

A day with at least 89.1 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 171.1 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Alabaster Shelby Co AP ASOS: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years89.1 mm (3.5 in)
5 years112.3 mm (4.4 in)
10 years127.2 mm (5.0 in)
25 years145.4 mm (5.7 in)
50 years158.5 mm (6.2 in)Longer than the 30 years of record
100 years171.1 mm (6.7 in)Longer than the 30 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, 30 years of values from 1996 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: 158.8 mm (6.3 in) in 2021; 140.2 mm (5.5 in) in 2008; 124.2 mm (4.9 in) in 2010.

Download the Data

  • Data for Alabaster Shelby Co AP ASOS standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Alabaster Shelby Co AP ASOS 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).