Built 2026-10-14 (14 October 2026)

Calliham Weather Records (USC00411337)

Record envelope, standing records and threshold days for Calliham (USC00411337), Texas, United States, with 49 years of record.

Key Facts for Calliham

  • Calliham (USC00411337) is a weather station in Texas, United States at 28.47 latitude and -98.35 longitude, 66 m (218 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Calliham still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Calliham set a daily record precipitation of 37.3 mm (1.5 in) on 2 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Texas, United States, 28.47 latitude, -98.35 longitude.
  • Elevation: 66 m (218 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

37 days at or beyond a record
Daily record high and record low at Calliham, with 2026 drawn through them The band shows the record high and record low for each calendar day at Calliham. The lines show the 2026 daily maximum and minimum. 37 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 Calliham. The lines show the 2026 daily maximum and minimum. 37 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Calliham, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.8 C (91.0 F)-7.2 C (19.0 F)32.2 C (90.0 F)-7.2 C (19.0 F)
Feb37.8 C (100.0 F)-10.0 C (14.0 F)37.8 C (100.0 F)-3.9 C (25.0 F)
Mar38.3 C (100.9 F)-4.4 C (24.1 F)35.6 C (96.1 F)1.7 C (35.1 F)
Apr38.9 C (102.0 F)2.8 C (37.0 F)36.1 C (97.0 F)8.3 C (46.9 F)
May41.1 C (106.0 F)8.9 C (48.0 F)35.6 C (96.1 F)11.1 C (52.0 F)
Jun43.9 C (111.0 F)17.2 C (63.0 F)35.6 C (96.1 F)21.1 C (70.0 F)
Jul42.2 C (108.0 F)16.1 C (61.0 F)40.6 C (105.1 F)21.7 C (71.1 F)
Aug45.0 C (113.0 F)18.9 C (66.0 F)40.6 C (105.1 F)21.7 C (71.1 F)
Sep43.9 C (111.0 F)8.9 C (48.0 F)40.6 C (105.1 F)21.7 C (71.1 F)
Oct37.2 C (99.0 F)1.7 C (35.1 F)35.0 C (95.0 F)16.7 C (62.1 F)
Nov35.0 C (95.0 F)-2.2 C (28.0 F)n/an/a
Dec33.9 C (93.0 F)-6.7 C (19.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Calliham by the year they were set 1,464 records at Calliham still stand. 2000 holds the most, with 79. 0204060801999: 222000: 792001: 442002: 532003: 422004: 542005: 512006: 562007: 582008: 492009: 652010: 402011: 782012: 412013: 552014: 432015: 412016: 322017: 622018: 412019: 572020: 582021: 502022: 662023: 692024: 582025: 572026: 431999200220052008201120142017202020232026
1,464 records at Calliham still stand. 2000 holds the most, with 79.
Standing records at Calliham by the year they were set
Year setStanding records
199922
200079
200144
200253
200342
200454
200551
200656
200758
200849
200965
201040
201178
201241
201355
201443
201541
201632
201762
201841
201957
202058
202150
202266
202369
202458
202557
202643

All-Time Record Progression

1 new records
When Calliham set new all-time records 1 all-time records were set at Calliham between 17 April 2010 and 17 April 2010. Each dot is a new record. Record daily precipitation17 April 2010: Record daily precipitation 304.8 mm (12.0 in)2010
1 all-time records were set at Calliham between 17 April 2010 and 17 April 2010. Each dot is a new record.
When Calliham set new all-time records
DateKindDetail
2010-04-17Record daily precipitationRecord daily precipitation 304.8 mm (12.0 in)

Wettest Day of Each Month

Apr: 304.8 mm (12.0 in)
Record daily precipitation for each month at Calliham The wettest day on record for each calendar month at Calliham. The most was 304.8 mm (12.0 in) on 17 April 2010. 0100200300400 Jan: 79.8 mm (3.1 in), 1 January 1992 Jan Feb: 91.7 mm (3.6 in), 23 February 2016 Feb Mar: 88.6 mm (3.5 in), 11 March 2017 Mar Apr: 304.8 mm (12.0 in), 17 April 2010 Apr May: 137.2 mm (5.4 in), 16 May 2021 May Jun: 114.3 mm (4.5 in), 5 June 2000 Jun Jul: 214.1 mm (8.4 in), 18 July 1990 Jul Aug: 201.9 mm (7.9 in), 11 August 1980 Aug Sep: 171.5 mm (6.8 in), 15 September 2002 Sep Oct: 164.3 mm (6.5 in), 12 October 2003 Oct Nov: 71.1 mm (2.8 in), 17 November 1995 Nov Dec: 65.8 mm (2.6 in), 5 December 2016 Dec
The wettest day on record for each calendar month at Calliham. The most was 304.8 mm (12.0 in) on 17 April 2010.
Record daily precipitation for each month at Calliham
MonthRecord daily precipitation (mm)Date
Jan79.8 mm (3.1 in)1 January 1992
Feb91.7 mm (3.6 in)23 February 2016
Mar88.6 mm (3.5 in)11 March 2017
Apr304.8 mm (12.0 in)17 April 2010
May137.2 mm (5.4 in)16 May 2021
Jun114.3 mm (4.5 in)5 June 2000
Jul214.1 mm (8.4 in)18 July 1990
Aug201.9 mm (7.9 in)11 August 1980
Sep171.5 mm (6.8 in)15 September 2002
Oct164.3 mm (6.5 in)12 October 2003
Nov71.1 mm (2.8 in)17 November 1995
Dec65.8 mm (2.6 in)5 December 2016

Period of Record Coverage

1999 to 2026
Days with data per year at Calliham 28 years of record at Calliham, 1999 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1999, 2026. 1999: 179 of 365 days2000: 354 of 366 days2001: 363 of 365 days2002: 360 of 365 days2003: 361 of 365 days2004: 357 of 366 days2005: 361 of 365 days2006: 358 of 365 days2007: 342 of 365 days2008: 362 of 366 days2009: 365 of 365 days2010: 362 of 365 days2011: 361 of 365 days2012: 362 of 366 days2013: 361 of 365 days2014: 361 of 365 days2015: 359 of 365 days2016: 353 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 365 of 366 days2025: 363 of 365 days2026: 274 of 365 days200020052010201520202025
28 years of record at Calliham, 1999 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1999, 2026.
Days with data per year at Calliham
YearDays with dataShare of yearComplete
199917949%No
200035497%Yes
200136399%Yes
200236099%Yes
200336199%Yes
200435798%Yes
200536199%Yes
200635898%Yes
200734294%Yes
200836299%Yes
2009365100%Yes
201036299%Yes
201136199%Yes
201236299%Yes
201336199%Yes
201436199%Yes
201535998%Yes
201635396%Yes
2017364100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024365100%Yes
202536399%Yes
202627475%No

Latest Records

20
Latest records at Calliham
DateStationRecordValueBeat old record byOld record stoodSignificance
2 October 2026Calliham, USdaily rain (Provisional)37.3 mm (1.5 in)21.6 mm (0.9 in)8 years18 of 100 (Routine)
15 June 2026Calliham, USdaily rain16.0 mm (0.6 in)3.0 mm (0.12 in)32 years14 of 100 (Routine)
27 May 2026Calliham, USdaily rain48.8 mm (1.9 in)9.7 mm (0.38 in)31 years18 of 100 (Routine)
21 May 2026Calliham, USdaily rain20.8 mm (0.8 in)3.8 mm (0.15 in)33 years16 of 100 (Routine)
20 May 2026Calliham, USdaily rain63.5 mm (2.5 in)12.7 mm (0.5 in)3 years11 of 100 (Routine)
21 April 2026Calliham, USdaily rain13.5 mm (0.5 in)5.9 mm (0.23 in)44 years19 of 100 (Routine)
20 April 2026Calliham, USdaily rain22.4 mm (0.9 in)8.2 mm (0.32 in)47 years20 of 100 (Routine)
13 June 2025Calliham, USdaily rain15.2 mm (0.6 in)3.3 mm (0.13 in)32 years14 of 100 (Routine)
23 May 2025Calliham, USdaily rain8.4 mm (0.33 in)2.8 mm (0.11 in)28 years13 of 100 (Routine)
27 March 2025Calliham, USdaily rain63.5 mm (2.5 in)29.0 mm (1.1 in)32 years34 of 100 (Routine)
21 January 2025Calliham, USdaily snowfall0.3 cm (0.1 in)0.3 cm (0.1 in)46 years17 of 100 (Routine)
10 January 2025Calliham, USdaily rain37.8 mm (1.5 in)25.6 mm (1.0 in)4 years32 of 100 (Routine)
29 July 2024Calliham, USdaily rain14.0 mm (0.6 in)1.3 mm (0.05 in)21 years10 of 100 (Routine)
25 July 2024Calliham, USdaily rain22.9 mm (0.9 in)14.8 mm (0.6 in)35 years20 of 100 (Routine)
11 July 2024Calliham, USdaily rain41.9 mm (1.6 in)16.5 mm (0.6 in)3 years11 of 100 (Routine)
20 June 2024Calliham, USdaily rain80.0 mm (3.1 in)58.9 mm (2.3 in)6 years37 of 100 (Notable)
9 April 2024Calliham, USdaily rain1.5 mm (0.06 in)1.0 mm (0.04 in)8 years6 of 100 (Routine)
17 February 2024Calliham, USdaily rain13.0 mm (0.5 in)6.9 mm (0.27 in)33 years20 of 100 (Routine)
16 February 2024Calliham, USdaily rain10.9 mm (0.4 in)4.5 mm (0.18 in)25 years15 of 100 (Routine)
3 February 2024Calliham, USdaily rain27.9 mm (1.1 in)17.2 mm (0.7 in)32 years28 of 100 (Routine)

Climate Trend

24 complete years, 2000 to 2025
Annual mean temperature at Calliham as warming stripes, 2000 to 2025 One stripe for each of 24 complete years at Calliham, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 22.3 C (72.2 F); red stripes are warmer. The coolest year was 2010, at 21.3 C (70.4 F), and the warmest was 2024, at 23.5 C (74.2 F). The strongest colour marks a difference of 1.2 C (2.2 F). 2000: 22.8 C, +0.5 C from the station mean2001: 22.0 C, -0.3 C from the station mean2002: 21.9 C, -0.5 C from the station mean2003: 21.4 C, -1.0 C from the station mean2004: 21.7 C, -0.7 C from the station mean2005: 22.1 C, -0.2 C from the station mean2006: 23.0 C, +0.6 C from the station mean2008: 22.4 C, +0.1 C from the station mean2009: 22.6 C, +0.3 C from the station mean2010: 21.3 C, -1.0 C from the station mean2011: 23.1 C, +0.8 C from the station mean2012: 23.3 C, +0.9 C from the station mean2013: 21.9 C, -0.4 C from the station mean2014: 21.7 C, -0.7 C from the station mean2015: 21.7 C, -0.7 C from the station mean2017: 22.8 C, +0.5 C from the station mean2018: 21.7 C, -0.6 C from the station mean2019: 22.0 C, -0.3 C from the station mean2020: 22.6 C, +0.2 C from the station mean2021: 22.1 C, -0.3 C from the station mean2022: 22.2 C, -0.2 C from the station mean2023: 23.2 C, +0.9 C from the station mean2024: 23.5 C, +1.1 C from the station mean2025: 23.1 C, +0.8 C from the station mean200020052010201520202025
One stripe for each of 24 complete years at Calliham, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 22.3 C (72.2 F); red stripes are warmer. The coolest year was 2010, at 21.3 C (70.4 F), and the warmest was 2024, at 23.5 C (74.2 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Calliham as warming stripes, 2000 to 2025
YearAnnual mean temperatureDifference from the station mean
200022.8 C+0.52 C
200122.0 C-0.30 C
200221.9 C-0.47 C
200321.4 C-0.95 C
200421.7 C-0.65 C
200522.1 C-0.23 C
200623.0 C+0.63 C
200822.4 C+0.06 C
200922.6 C+0.30 C
201021.3 C-1.01 C
201123.1 C+0.76 C
201223.3 C+0.93 C
201321.9 C-0.43 C
201421.7 C-0.65 C
201521.7 C-0.65 C
201722.8 C+0.50 C
201821.7 C-0.58 C
201922.0 C-0.31 C
202022.6 C+0.23 C
202122.1 C-0.26 C
202222.2 C-0.15 C
202323.2 C+0.87 C
202423.5 C+1.14 C
202523.1 C+0.81 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

1978 to 2026
Yearly extremes at Calliham: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)200641.1 C (106.0 F)28
Coldest night (TNn)-10.0 C (14.0 F)2021-3.3 C (26.1 F)28
Wettest day (Rx1day)304.8 mm (12.0 in)201069.1 mm (2.7 in)49
Wettest five days (Rx5day)588.1 mm (23.2 in)201097.2 mm (3.8 in)49
Longest dry spell (CDD)79 days201139 days49

Hottest day (TXx)

Hottest day (TXx) at Calliham by year The hottest day of the year at Calliham, 1978 to 2026. The record is 45.0 C (113.0 F) in 2006, marked on the chart; the median year is 41.1 C (106.0 F). 36384042444619801990200020102020Record: 45.0 C (113.0 F) in 2006
The hottest day of the year at Calliham, 1978 to 2026. The record is 45.0 C (113.0 F) in 2006, marked on the chart; the median year is 41.1 C (106.0 F).
Hottest day (TXx) at Calliham by year
YearHottest day (TXx)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
199941.1 C (106.0 F)
200043.9 C (111.0 F)
200141.7 C (107.1 F)
200241.1 C (106.0 F)
200338.3 C (100.9 F)
200437.2 C (99.0 F)
200542.2 C (108.0 F)
200645.0 C (113.0 F)
200737.2 C (99.0 F)
200839.4 C (102.9 F)
200941.1 C (106.0 F)
201040.0 C (104.0 F)
201142.8 C (109.0 F)
201241.7 C (107.1 F)
201341.7 C (107.1 F)
201440.6 C (105.1 F)
201539.4 C (102.9 F)
201641.1 C (106.0 F)
201741.1 C (106.0 F)
201841.7 C (107.1 F)
201941.1 C (106.0 F)
202041.1 C (106.0 F)
202137.8 C (100.0 F)
202242.2 C (108.0 F)
202343.9 C (111.0 F)
202441.7 C (107.1 F)
202540.6 C (105.1 F)
202640.6 C (105.1 F)

Coldest night (TNn)

Coldest night (TNn) at Calliham by year The coldest night of the year at Calliham, 1978 to 2026. The record is -10.0 C (14.0 F) in 2021, marked on the chart; the median year is -3.3 C (26.1 F). -10-7.5-5-2.5019801990200020102020Record: -10.0 C (14.0 F) in 2021
The coldest night of the year at Calliham, 1978 to 2026. The record is -10.0 C (14.0 F) in 2021, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Calliham by year
YearColdest night (TNn)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999-1.7 C (28.9 F)
2000-1.7 C (28.9 F)
2001-1.1 C (30.0 F)
2002-5.6 C (21.9 F)
2003-3.3 C (26.1 F)
2004-5.0 C (23.0 F)
2005-0.6 C (30.9 F)
2006-3.9 C (25.0 F)
2007-1.7 C (28.9 F)
2008-1.7 C (28.9 F)
2009-3.9 C (25.0 F)
2010-6.7 C (19.9 F)
2011-5.0 C (23.0 F)
2012-1.1 C (30.0 F)
2013-1.7 C (28.9 F)
2014-3.3 C (26.1 F)
2015-0.6 C (30.9 F)
2016-2.2 C (28.0 F)
2017-5.6 C (21.9 F)
2018-5.6 C (21.9 F)
2019-2.8 C (27.0 F)
2020-2.2 C (28.0 F)
2021-10.0 C (14.0 F)
2022-6.7 C (19.9 F)
2023-1.1 C (30.0 F)
2024-6.7 C (19.9 F)
2025-7.2 C (19.0 F)
2026-7.2 C (19.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Calliham by year The wettest day of the year at Calliham, 1978 to 2026. The record is 304.8 mm (12.0 in) in 2010, marked on the chart; the median year is 69.1 mm (2.7 in). 010020030040019801990200020102020Record: 304.8 mm (12.0 in) in 2010
The wettest day of the year at Calliham, 1978 to 2026. The record is 304.8 mm (12.0 in) in 2010, marked on the chart; the median year is 69.1 mm (2.7 in).
Wettest day (Rx1day) at Calliham by year
YearWettest day (Rx1day)
197827.4 mm (1.1 in)
197929.2 mm (1.1 in)
1980201.9 mm (7.9 in)
198179.0 mm (3.1 in)
198281.3 mm (3.2 in)
198386.4 mm (3.4 in)
198463.5 mm (2.5 in)
198580.8 mm (3.2 in)
198686.1 mm (3.4 in)
198766.5 mm (2.6 in)
198844.7 mm (1.8 in)
198934.8 mm (1.4 in)
1990214.1 mm (8.4 in)
199169.1 mm (2.7 in)
199279.8 mm (3.1 in)
199345.0 mm (1.8 in)
199466.0 mm (2.6 in)
199571.1 mm (2.8 in)
199678.5 mm (3.1 in)
199765.8 mm (2.6 in)
1998152.4 mm (6.0 in)
199961.0 mm (2.4 in)
2000114.3 mm (4.5 in)
200139.1 mm (1.5 in)
2002171.5 mm (6.8 in)
2003164.3 mm (6.5 in)
200456.6 mm (2.2 in)
200544.5 mm (1.8 in)
200688.9 mm (3.5 in)
200763.5 mm (2.5 in)
200845.2 mm (1.8 in)
200994.0 mm (3.7 in)
2010304.8 mm (12.0 in)
201151.1 mm (2.0 in)
201281.3 mm (3.2 in)
201366.3 mm (2.6 in)
201455.9 mm (2.2 in)
201563.5 mm (2.5 in)
2016129.5 mm (5.1 in)
201788.6 mm (3.5 in)
201884.6 mm (3.3 in)
2019110.5 mm (4.4 in)
202065.3 mm (2.6 in)
2021137.2 mm (5.4 in)
202258.9 mm (2.3 in)
202350.8 mm (2.0 in)
202480.0 mm (3.1 in)
202563.5 mm (2.5 in)
202664.3 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Calliham by year The wettest five days of the year at Calliham, 1978 to 2026. The record is 588.1 mm (23.2 in) in 2010, marked on the chart; the median year is 97.2 mm (3.8 in). 020040060019801990200020102020Record: 588.1 mm (23.2 in) in 2010
The wettest five days of the year at Calliham, 1978 to 2026. The record is 588.1 mm (23.2 in) in 2010, marked on the chart; the median year is 97.2 mm (3.8 in).
Wettest five days (Rx5day) at Calliham by year
YearWettest five days (Rx5day)
197836.8 mm (1.4 in)
197972.2 mm (2.8 in)
1980255.2 mm (10.0 in)
198198.0 mm (3.9 in)
198297.2 mm (3.8 in)
198386.4 mm (3.4 in)
198477.2 mm (3.0 in)
1985121.9 mm (4.8 in)
198686.1 mm (3.4 in)
1987117.3 mm (4.6 in)
198870.9 mm (2.8 in)
198936.2 mm (1.4 in)
1990282.7 mm (11.1 in)
1991129.6 mm (5.1 in)
1992102.9 mm (4.1 in)
199353.5 mm (2.1 in)
199483.1 mm (3.3 in)
199580.5 mm (3.2 in)
199686.4 mm (3.4 in)
1997118.9 mm (4.7 in)
1998175.7 mm (6.9 in)
199988.9 mm (3.5 in)
2000116.6 mm (4.6 in)
200186.6 mm (3.4 in)
2002191.8 mm (7.6 in)
2003179.1 mm (7.1 in)
200489.6 mm (3.5 in)
200592.8 mm (3.7 in)
200688.9 mm (3.5 in)
2007110.0 mm (4.3 in)
200858.5 mm (2.3 in)
2009219.2 mm (8.6 in)
2010588.1 mm (23.2 in)
201162.8 mm (2.5 in)
2012124.5 mm (4.9 in)
201376.2 mm (3.0 in)
201477.5 mm (3.1 in)
2015132.8 mm (5.2 in)
2016130.3 mm (5.1 in)
201793.2 mm (3.7 in)
2018137.7 mm (5.4 in)
2019110.5 mm (4.4 in)
202065.3 mm (2.6 in)
2021247.5 mm (9.7 in)
2022105.1 mm (4.1 in)
2023114.8 mm (4.5 in)
202497.1 mm (3.8 in)
202564.3 mm (2.5 in)
2026148.6 mm (5.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Calliham by year The longest dry spell of the year at Calliham, 1978 to 2026. The record is 79 days in 2011, marked on the chart; the median year is 39 days. 02040608019801990200020102020Record: 79 days in 2011
The longest dry spell of the year at Calliham, 1978 to 2026. The record is 79 days in 2011, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Calliham by year
YearLongest dry spell (CDD)
197815 days
197958 days
198056 days
198147 days
198257 days
198352 days
198429 days
198530 days
198633 days
198730 days
198839 days
198944 days
199038 days
199130 days
199231 days
199356 days
199438 days
199529 days
199659 days
199732 days
199875 days
199947 days
200044 days
200132 days
200241 days
200334 days
200440 days
200540 days
200652 days
200728 days
200854 days
200941 days
201036 days
201179 days
201256 days
201350 days
201427 days
201535 days
201635 days
201733 days
201834 days
201942 days
202028 days
202125 days
202246 days
202346 days
202439 days
202531 days
202641 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

45 years, 1979 to 2025

A day with at least 73.4 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 322.4 mm (12.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Calliham: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years73.4 mm (2.9 in)
5 years111.6 mm (4.4 in)
10 years145.6 mm (5.7 in)
25 years201.7 mm (7.9 in)
50 years255.7 mm (10.1 in)Longer than the 45 years of record
100 years322.4 mm (12.7 in)Longer than the 45 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, 45 years of values from 1979 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: 304.8 mm (12.0 in) in 2010; 214.1 mm (8.4 in) in 1990; 201.9 mm (7.9 in) in 1980.

Download the Data

  • Data for Calliham standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Calliham 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).