Built 2026-10-18 (18 October 2026)

Allendale 2 NW Weather Records (USC00380126)

Record envelope, standing records and threshold days for Allendale 2 NW (USC00380126), South Carolina, United States, with 35 years of record.

Key Facts for Allendale 2 NW

  • Allendale 2 NW (USC00380126) is a weather station in South Carolina, United States at 33.02 latitude and -81.32 longitude, 55 m (180 ft) above sea level.
  • The station reports from 1981 to 2015, 35 years of record.
  • 1,464 records set at Allendale 2 NW still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Allendale 2 NW set a monthly record low minimum temperature of 1.7 C (35.1 F) on 1 May 2015.

About the Station

  • Location: South Carolina, United States, 33.02 latitude, -81.32 longitude.
  • Elevation: 55 m (180 ft).
  • Period of record: 1981 to 2015, 35 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Allendale 2 NW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Allendale 2 NW. The lines show the 2026 daily maximum and minimum. 0 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 Allendale 2 NW. 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 Allendale 2 NW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan27.8 C (82.0 F)-18.9 C (-2.0 F)n/an/a
Feb30.6 C (87.1 F)-10.6 C (12.9 F)n/an/a
Mar31.1 C (88.0 F)-8.9 C (16.0 F)n/an/a
Apr36.1 C (97.0 F)-3.9 C (25.0 F)n/an/a
May37.8 C (100.0 F)1.7 C (35.1 F)n/an/a
Jun41.1 C (106.0 F)7.8 C (46.0 F)n/an/a
Jul41.1 C (106.0 F)13.3 C (55.9 F)n/an/a
Aug41.1 C (106.0 F)11.7 C (53.1 F)n/an/a
Sep39.4 C (102.9 F)5.0 C (41.0 F)n/an/a
Oct35.6 C (96.1 F)-2.2 C (28.0 F)n/an/a
Nov32.2 C (90.0 F)-8.3 C (17.1 F)n/an/a
Dec28.3 C (82.9 F)-15.0 C (5.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Allendale 2 NW by the year they were set 1,464 records at Allendale 2 NW still stand. 1989 holds the most, with 64. 0204060801981: 551982: 381983: 441984: 531985: 621986: 601987: 361988: 501989: 641990: 401991: 491992: 311993: 391994: 291995: 311996: 401997: 481998: 541999: 572000: 422001: 272002: 462003: 272004: 312005: 362006: 392007: 542008: 452009: 342010: 312011: 392012: 392013: 342014: 462015: 14198119851989199319972001200520092013
1,464 records at Allendale 2 NW still stand. 1989 holds the most, with 64.
Standing records at Allendale 2 NW by the year they were set
Year setStanding records
198155
198238
198344
198453
198562
198660
198736
198850
198964
199040
199149
199231
199339
199429
199531
199640
199748
199854
199957
200042
200127
200246
200327
200431
200536
200639
200754
200845
200934
201031
201139
201239
201334
201446
201514

Wettest Day of Each Month

Jun: 203.2 mm (8.0 in)
Record daily precipitation for each month at Allendale 2 NW The wettest day on record for each calendar month at Allendale 2 NW. The most was 203.2 mm (8.0 in) on 27 June 1993. 0100200300 Jan: 67.3 mm (2.6 in), 17 January 2010 Jan Feb: 68.6 mm (2.7 in), 5 February 2011 Feb Mar: 89.9 mm (3.5 in), 28 March 2005 Mar Apr: 73.7 mm (2.9 in), 17 April 2007 Apr May: 104.1 mm (4.1 in), 30 May 2012 May Jun: 203.2 mm (8.0 in), 27 June 1993 Jun Jul: 161.8 mm (6.4 in), 12 July 2013 Jul Aug: 146.6 mm (5.8 in), 2 August 1991 Aug Sep: 110.5 mm (4.4 in), 22 September 1989 Sep Oct: 181.9 mm (7.2 in), 9 October 1992 Oct Nov: 106.7 mm (4.2 in), 11 November 2009 Nov Dec: 134.1 mm (5.3 in), 13 December 1985 Dec
The wettest day on record for each calendar month at Allendale 2 NW. The most was 203.2 mm (8.0 in) on 27 June 1993.
Record daily precipitation for each month at Allendale 2 NW
MonthRecord daily precipitation (mm)Date
Jan67.3 mm (2.6 in)17 January 2010
Feb68.6 mm (2.7 in)5 February 2011
Mar89.9 mm (3.5 in)28 March 2005
Apr73.7 mm (2.9 in)17 April 2007
May104.1 mm (4.1 in)30 May 2012
Jun203.2 mm (8.0 in)27 June 1993
Jul161.8 mm (6.4 in)12 July 2013
Aug146.6 mm (5.8 in)2 August 1991
Sep110.5 mm (4.4 in)22 September 1989
Oct181.9 mm (7.2 in)9 October 1992
Nov106.7 mm (4.2 in)11 November 2009
Dec134.1 mm (5.3 in)13 December 1985

Period of Record Coverage

1981 to 2015
Days with data per year at Allendale 2 NW 35 years of record at Allendale 2 NW, 1981 to 2015. 3 years have data for under 90 percent of days and are left out of rankings: 2001, 2002, 2015. 1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 362 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 364 of 365 days1992: 366 of 366 days1993: 363 of 365 days1994: 365 of 365 days1995: 361 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 364 of 365 days1999: 364 of 365 days2000: 335 of 366 days2001: 243 of 365 days2002: 244 of 365 days2003: 335 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 363 of 365 days2007: 365 of 365 days2008: 364 of 366 days2009: 362 of 365 days2010: 364 of 365 days2011: 361 of 365 days2012: 365 of 366 days2013: 344 of 365 days2014: 352 of 365 days2015: 130 of 365 days1985199019952000200520102015
35 years of record at Allendale 2 NW, 1981 to 2015. 3 years have data for under 90 percent of days and are left out of rankings: 2001, 2002, 2015.
Days with data per year at Allendale 2 NW
YearDays with dataShare of yearComplete
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198636299%Yes
1987364100%Yes
1988366100%Yes
1989365100%Yes
1990364100%Yes
1991364100%Yes
1992366100%Yes
199336399%Yes
1994365100%Yes
199536199%Yes
1996365100%Yes
1997364100%Yes
1998364100%Yes
1999364100%Yes
200033592%Yes
200124367%No
200224467%No
200333592%Yes
2004365100%Yes
2005365100%Yes
200636399%Yes
2007365100%Yes
200836499%Yes
200936299%Yes
2010364100%Yes
201136199%Yes
2012365100%Yes
201334494%Yes
201435296%Yes
201513036%No

Latest Records

20
Latest records at Allendale 2 NW
DateStationRecordValueBeat old record byOld record stoodSignificance
1 May 2015Allendale 2 NW, USmonthly low min1.7 C (35.1 F)1.6 C (2.9 F)6 years18 of 100 (Routine)
27 April 2015Allendale 2 NW, USdaily rain25.4 mm (1.0 in)8.4 mm (0.33 in)10 years12 of 100 (Routine)
20 April 2015Allendale 2 NW, USdaily rain35.6 mm (1.4 in)12.7 mm (0.5 in)1 year13 of 100 (Routine)
17 April 2015Allendale 2 NW, USdaily low max (Tie)15.6 C (60.1 F)tie0 years0 of 100 (Routine)
15 April 2015Allendale 2 NW, USdaily high min18.9 C (66.0 F)1.1 C (2.0 F)24 years12 of 100 (Routine)
11 April 2015Allendale 2 NW, USdaily high min18.3 C (64.9 F)0.5 C (0.9 F)16 years8 of 100 (Routine)
10 April 2015Allendale 2 NW, USdaily high max32.8 C (91.0 F)0.6 C (1.1 F)4 years5 of 100 (Routine)
30 March 2015Allendale 2 NW, USdaily low min-1.1 C (30.0 F)1.7 C (3.1 F)4 years7 of 100 (Routine)
27 March 2015Allendale 2 NW, USdaily high min16.1 C (61.0 F)0.5 C (0.9 F)28 years11 of 100 (Routine)
26 March 2015Allendale 2 NW, USdaily high min (Tie)15.6 C (60.1 F)tie28 years2 of 100 (Routine)
23 March 2015Allendale 2 NW, USdaily rain46.5 mm (1.8 in)22.4 mm (0.9 in)9 years19 of 100 (Routine)
17 March 2015Allendale 2 NW, USdaily high max (Tie)30.0 C (86.0 F)tie2 years0 of 100 (Routine)
12 March 2015Allendale 2 NW, USmonthly high max (Tie)31.1 C (88.0 F)tie29 years5 of 100 (Routine)
12 March 2015Allendale 2 NW, USdaily high min14.4 C (57.9 F)0.5 C (0.9 F)8 years5 of 100 (Routine)
5 March 2015Allendale 2 NW, USdaily high min15.0 C (59.0 F)0.6 C (1.1 F)10 years7 of 100 (Routine)
22 February 2015Allendale 2 NW, USdaily low min (Tie)-4.4 C (24.1 F)tie27 years2 of 100 (Routine)
21 February 2015Allendale 2 NW, USdaily low max4.4 C (39.9 F)6.2 C (11.2 F)21 years19 of 100 (Routine)
21 February 2015Allendale 2 NW, USdaily low min-9.4 C (15.1 F)7.2 C (13.0 F)1 year16 of 100 (Routine)
20 February 2015Allendale 2 NW, USdaily low max2.8 C (37.0 F)3.3 C (5.9 F)25 years15 of 100 (Routine)
20 February 2015Allendale 2 NW, USdaily low min-10.0 C (14.0 F)4.4 C (7.9 F)12 years14 of 100 (Routine)

Climate Trend

29 complete years, 1981 to 2014
Annual mean temperature at Allendale 2 NW as warming stripes, 1981 to 2014 One stripe for each of 29 complete years at Allendale 2 NW, 1981 to 2014. 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 2010, at 17.1 C (62.7 F), and the warmest was 1990, at 19.5 C (67.1 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1981: 17.7 C, -0.2 C from the station mean1982: 18.6 C, +0.7 C from the station mean1983: 17.3 C, -0.6 C from the station mean1984: 18.0 C, +0.1 C from the station mean1985: 18.5 C, +0.6 C from the station mean1986: 18.6 C, +0.7 C from the station mean1987: 17.9 C, 0.0 C from the station mean1988: 17.1 C, -0.8 C from the station mean1989: 17.8 C, -0.1 C from the station mean1990: 19.5 C, +1.6 C from the station mean1991: 19.0 C, +1.1 C from the station mean1992: 17.8 C, -0.1 C from the station mean1993: 18.2 C, +0.3 C from the station mean1994: 17.6 C, -0.3 C from the station mean1995: 17.6 C, -0.3 C from the station mean1996: 17.2 C, -0.7 C from the station mean1997: 17.5 C, -0.4 C from the station mean1998: 18.8 C, +0.9 C from the station mean1999: 17.9 C, 0.0 C from the station mean2004: 17.7 C, -0.2 C from the station mean2005: 17.7 C, -0.2 C from the station mean2006: 17.7 C, -0.2 C from the station mean2007: 18.1 C, +0.2 C from the station mean2008: 17.5 C, -0.4 C from the station mean2009: 17.3 C, -0.6 C from the station mean2010: 17.1 C, -0.8 C from the station mean2011: 18.1 C, +0.2 C from the station mean2012: 18.1 C, +0.2 C from the station mean2014: 17.1 C, -0.8 C from the station mean1981198519901995200020052010
One stripe for each of 29 complete years at Allendale 2 NW, 1981 to 2014. 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 2010, at 17.1 C (62.7 F), and the warmest was 1990, at 19.5 C (67.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Allendale 2 NW as warming stripes, 1981 to 2014
YearAnnual mean temperatureDifference from the station mean
198117.7 C-0.16 C
198218.6 C+0.71 C
198317.3 C-0.57 C
198418.0 C+0.15 C
198518.5 C+0.56 C
198618.6 C+0.69 C
198717.9 C+0.04 C
198817.1 C-0.80 C
198917.8 C-0.09 C
199019.5 C+1.62 C
199119.0 C+1.08 C
199217.8 C-0.05 C
199318.2 C+0.31 C
199417.6 C-0.25 C
199517.6 C-0.34 C
199617.2 C-0.71 C
199717.5 C-0.43 C
199818.8 C+0.95 C
199917.9 C0.00 C
200417.7 C-0.15 C
200517.7 C-0.19 C
200617.7 C-0.19 C
200718.1 C+0.17 C
200817.5 C-0.44 C
200917.3 C-0.58 C
201017.1 C-0.81 C
201118.1 C+0.16 C
201218.1 C+0.19 C
201417.1 C-0.75 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

1981 to 2015
Yearly extremes at Allendale 2 NW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.1 C (106.0 F)198338.3 C (100.9 F)35
Coldest night (TNn)-18.9 C (-2.0 F)1985-9.4 C (15.1 F)35
Wettest day (Rx1day)203.2 mm (8.0 in)199381.3 mm (3.2 in)35
Wettest five days (Rx5day)228.3 mm (9.0 in)2013113.5 mm (4.5 in)34
Longest dry spell (CDD)44 days200023 days35

Hottest day (TXx)

Hottest day (TXx) at Allendale 2 NW by year The hottest day of the year at Allendale 2 NW, 1981 to 2015. The record is 41.1 C (106.0 F) in 1983, marked on the chart; the median year is 38.3 C (100.9 F). 323436384042199020002010Record: 41.1 C (106.0 F) in 1983
The hottest day of the year at Allendale 2 NW, 1981 to 2015. The record is 41.1 C (106.0 F) in 1983, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Allendale 2 NW by year
YearHottest day (TXx)
198138.9 C (102.0 F)
198237.2 C (99.0 F)
198341.1 C (106.0 F)
198438.3 C (100.9 F)
198539.4 C (102.9 F)
198640.6 C (105.1 F)
198738.9 C (102.0 F)
198838.9 C (102.0 F)
198938.3 C (100.9 F)
199040.0 C (104.0 F)
199137.8 C (100.0 F)
199237.8 C (100.0 F)
199338.9 C (102.0 F)
199435.6 C (96.1 F)
199537.2 C (99.0 F)
199638.3 C (100.9 F)
199737.2 C (99.0 F)
199841.1 C (106.0 F)
199939.4 C (102.9 F)
200041.1 C (106.0 F)
200137.2 C (99.0 F)
200240.0 C (104.0 F)
200334.4 C (93.9 F)
200436.7 C (98.1 F)
200537.2 C (99.0 F)
200637.8 C (100.0 F)
200739.4 C (102.9 F)
200837.8 C (100.0 F)
200937.8 C (100.0 F)
201038.9 C (102.0 F)
201138.9 C (102.0 F)
201240.0 C (104.0 F)
201335.0 C (95.0 F)
201436.7 C (98.1 F)
201533.3 C (91.9 F)

Coldest night (TNn)

Coldest night (TNn) at Allendale 2 NW by year The coldest night of the year at Allendale 2 NW, 1981 to 2015. The record is -18.9 C (-2.0 F) in 1985, marked on the chart; the median year is -9.4 C (15.1 F). -20-15-10-50199020002010Record: -18.9 C (-2.0 F) in 1985
The coldest night of the year at Allendale 2 NW, 1981 to 2015. The record is -18.9 C (-2.0 F) in 1985, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Allendale 2 NW by year
YearColdest night (TNn)
1981-12.2 C (10.0 F)
1982-13.9 C (7.0 F)
1983-15.0 C (5.0 F)
1984-7.8 C (18.0 F)
1985-18.9 C (-2.0 F)
1986-13.3 C (8.1 F)
1987-5.6 C (21.9 F)
1988-8.3 C (17.1 F)
1989-9.4 C (15.1 F)
1990-2.2 C (28.0 F)
1991-8.9 C (16.0 F)
1992-4.4 C (24.1 F)
1993-8.3 C (17.1 F)
1994-10.0 C (14.0 F)
1995-10.6 C (12.9 F)
1996-10.6 C (12.9 F)
1997-6.7 C (19.9 F)
1998-6.7 C (19.9 F)
1999-9.4 C (15.1 F)
2000-8.9 C (16.0 F)
2001-10.0 C (14.0 F)
2002-9.4 C (15.1 F)
2003-10.6 C (12.9 F)
2004-8.9 C (16.0 F)
2005-10.6 C (12.9 F)
2006-8.9 C (16.0 F)
2007-6.7 C (19.9 F)
2008-10.6 C (12.9 F)
2009-10.0 C (14.0 F)
2010-10.0 C (14.0 F)
2011-9.4 C (15.1 F)
2012-8.9 C (16.0 F)
2013-6.7 C (19.9 F)
2014-11.1 C (12.0 F)
2015-10.0 C (14.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Allendale 2 NW by year The wettest day of the year at Allendale 2 NW, 1981 to 2015. The record is 203.2 mm (8.0 in) in 1993, marked on the chart; the median year is 81.3 mm (3.2 in). 050100150200250199020002010Record: 203.2 mm (8.0 in) in 1993
The wettest day of the year at Allendale 2 NW, 1981 to 2015. The record is 203.2 mm (8.0 in) in 1993, marked on the chart; the median year is 81.3 mm (3.2 in).
Wettest day (Rx1day) at Allendale 2 NW by year
YearWettest day (Rx1day)
198150.5 mm (2.0 in)
198256.6 mm (2.2 in)
198368.3 mm (2.7 in)
198464.3 mm (2.5 in)
1985134.1 mm (5.3 in)
198657.7 mm (2.3 in)
198780.8 mm (3.2 in)
198865.3 mm (2.6 in)
1989110.5 mm (4.4 in)
1990120.7 mm (4.8 in)
1991146.6 mm (5.8 in)
1992181.9 mm (7.2 in)
1993203.2 mm (8.0 in)
199476.2 mm (3.0 in)
1995101.6 mm (4.0 in)
199681.3 mm (3.2 in)
199761.7 mm (2.4 in)
199882.6 mm (3.3 in)
199967.3 mm (2.6 in)
200053.3 mm (2.1 in)
200166.0 mm (2.6 in)
200236.6 mm (1.4 in)
200388.4 mm (3.5 in)
2004135.9 mm (5.4 in)
2005127.0 mm (5.0 in)
2006108.0 mm (4.3 in)
200776.2 mm (3.0 in)
200877.5 mm (3.1 in)
2009106.7 mm (4.2 in)
2010102.4 mm (4.0 in)
201181.3 mm (3.2 in)
2012104.1 mm (4.1 in)
2013161.8 mm (6.4 in)
201472.4 mm (2.9 in)
201555.9 mm (2.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Allendale 2 NW by year The wettest five days of the year at Allendale 2 NW, 1981 to 2015. The record is 228.3 mm (9.0 in) in 2013, marked on the chart; the median year is 113.5 mm (4.5 in). 50100150200250199020002010Record: 228.3 mm (9.0 in) in 2013
The wettest five days of the year at Allendale 2 NW, 1981 to 2015. The record is 228.3 mm (9.0 in) in 2013, marked on the chart; the median year is 113.5 mm (4.5 in).
Wettest five days (Rx5day) at Allendale 2 NW by year
YearWettest five days (Rx5day)
198181.8 mm (3.2 in)
1982102.4 mm (4.0 in)
198388.2 mm (3.5 in)
1984110.1 mm (4.3 in)
1985153.4 mm (6.0 in)
198695.7 mm (3.8 in)
1987101.7 mm (4.0 in)
1988111.8 mm (4.4 in)
1989179.6 mm (7.1 in)
1990187.2 mm (7.4 in)
1991201.9 mm (7.9 in)
1992196.6 mm (7.7 in)
1993226.5 mm (8.9 in)
1994118.1 mm (4.6 in)
1995139.2 mm (5.5 in)
199691.5 mm (3.6 in)
1997139.1 mm (5.5 in)
1998115.2 mm (4.5 in)
1999124.9 mm (4.9 in)
200086.3 mm (3.4 in)
200182.7 mm (3.3 in)
200257.9 mm (2.3 in)
2003121.0 mm (4.8 in)
2004159.3 mm (6.3 in)
2005165.1 mm (6.5 in)
2006111.8 mm (4.4 in)
200785.1 mm (3.4 in)
200887.6 mm (3.4 in)
2009109.2 mm (4.3 in)
2010154.0 mm (6.1 in)
2011n/a
2012136.9 mm (5.4 in)
2013228.3 mm (9.0 in)
2014108.0 mm (4.3 in)
201580.3 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Allendale 2 NW by year The longest dry spell of the year at Allendale 2 NW, 1981 to 2015. The record is 44 days in 2000, marked on the chart; the median year is 23 days. 0204060199020002010Record: 44 days in 2000
The longest dry spell of the year at Allendale 2 NW, 1981 to 2015. The record is 44 days in 2000, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Allendale 2 NW by year
YearLongest dry spell (CDD)
198122 days
198219 days
198320 days
198425 days
198528 days
198619 days
198726 days
198818 days
198923 days
199023 days
199119 days
199224 days
199324 days
199418 days
199527 days
199624 days
199716 days
199825 days
199923 days
200044 days
200134 days
200212 days
200318 days
200420 days
200538 days
200624 days
200727 days
200814 days
200919 days
201026 days
20111 day
201218 days
201324 days
201418 days
20158 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Allendale 2 NW falls on 20 March and the median first autumn frost on 7 November, which leaves a median of 227 days between them.

Fitted over all years, the growing season changes by -3.7 days per decade at this station.

Frost dates and growing season at Allendale 2 NW
MeasureMedian, all yearsEarliest periodRecent period (1981 to 2014)Recent against earliestFitted trend
Last spring frost20 Marchn/a20 Marchn/a-0.2 days per decade
First autumn frost7 Novembern/a7 Novembern/a-3.9 days per decade
Growing days227 daysn/a227 daysn/a-3.7 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, 1981 to 2014

A day with at least 87.6 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 251.9 mm (9.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Allendale 2 NW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years87.6 mm (3.4 in)
5 years122.5 mm (4.8 in)
10 years148.9 mm (5.9 in)
25 years186.4 mm (7.3 in)
50 years217.6 mm (8.6 in)Longer than the 30 years of record
100 years251.9 mm (9.9 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 1981 to 2014.

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: 203.2 mm (8.0 in) in 1993; 181.9 mm (7.2 in) in 1992; 161.8 mm (6.4 in) in 2013.

Download the Data

  • Data for Allendale 2 NW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Allendale 2 NW 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).