Built 2026-10-19 (19 October 2026)

Caplan Weather Records (CA007051120)

Record envelope, standing records and threshold days for Caplan (CA007051120), Quebec, Canada, with 58 years of record.

Key Facts for Caplan

  • Caplan (CA007051120) is a weather station in Quebec, Canada at 48.10 latitude and -65.68 longitude, 23 m (75 ft) above sea level.
  • The station reports from 1947 to 2004, 58 years of record.
  • 1,464 records set at Caplan still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Caplan set a daily record snowfall of 15.6 cm (6.1 in) on 28 December 1983.

About the Station

  • Location: Quebec, Canada, 48.10 latitude, -65.68 longitude.
  • Elevation: 23 m (75 ft).
  • Period of record: 1947 to 2004, 58 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Caplan, with 2026 drawn through them The band shows the record high and record low for each calendar day at Caplan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Caplan. 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 Caplan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan8.9 C (48.0 F)-30.6 C (-23.1 F)n/an/a
Feb10.0 C (50.0 F)-29.4 C (-20.9 F)n/an/a
Mar15.0 C (59.0 F)-26.1 C (-15.0 F)n/an/a
Apr18.3 C (64.9 F)-15.0 C (5.0 F)n/an/a
May29.4 C (84.9 F)-6.1 C (21.0 F)n/an/a
Jun30.6 C (87.1 F)-6.7 C (19.9 F)n/an/a
Jul34.4 C (93.9 F)3.9 C (39.0 F)n/an/a
Aug33.3 C (91.9 F)2.8 C (37.0 F)n/an/a
Sep27.2 C (81.0 F)-3.3 C (26.1 F)n/an/a
Oct22.2 C (72.0 F)-7.2 C (19.0 F)n/an/a
Nov18.3 C (64.9 F)-16.1 C (3.0 F)n/an/a
Dec12.8 C (55.0 F)-26.1 C (-15.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Caplan by the year they were set 1,464 records at Caplan still stand. 1950 holds the most, with 66. 0204060801947: 591948: 441949: 601950: 661951: 571952: 311953: 431954: 391955: 281956: 401957: 501958: 321959: 501960: 361961: 351962: 461963: 441964: 411965: 501966: 401967: 361968: 331969: 341970: 371971: 351972: 531973: 281976: 121977: 401978: 441979: 561980: 351981: 481982: 431983: 39194719511955195919631967197119771981
1,464 records at Caplan still stand. 1950 holds the most, with 66.
Standing records at Caplan by the year they were set
Year setStanding records
194759
194844
194960
195066
195157
195231
195343
195439
195528
195640
195750
195832
195950
196036
196135
196246
196344
196441
196550
196640
196736
196833
196934
197037
197135
197253
197328
197612
197740
197844
197956
198035
198148
198243
198339

All-Time Record Progression

2 new records
When Caplan set new all-time records 2 all-time records were set at Caplan between 4 January 1981 and 8 July 1982. Each dot is a new record. Record low maximum temperatureRecord high minimum temperature4 January 1981: Record low maximum temperature -24.5 C (-12.1 F)8 July 1982: Record high minimum temperature 22.5 C (72.5 F)
2 all-time records were set at Caplan between 4 January 1981 and 8 July 1982. Each dot is a new record.
When Caplan set new all-time records
DateKindDetail
1981-01-04Record low maximum temperatureRecord low maximum temperature -24.5 C (-12.1 F)
1982-07-08Record high minimum temperatureRecord high minimum temperature 22.5 C (72.5 F)

Wettest Day of Each Month

Sep: 128.5 mm (5.1 in)
Record daily precipitation for each month at Caplan The wettest day on record for each calendar month at Caplan. The most was 128.5 mm (5.1 in) on 11 September 1954. 050100150 Jan: 36.4 mm (1.4 in), 22 January 1981 Jan Feb: 55.9 mm (2.2 in), 13 February 1978 Feb Mar: 49.0 mm (1.9 in), 4 March 1971 Mar Apr: 51.8 mm (2.0 in), 30 April 1979 Apr May: 46.5 mm (1.8 in), 31 May 1972 May Jun: 65.0 mm (2.6 in), 24 June 1972 Jun Jul: 97.2 mm (3.8 in), 22 July 1982 Jul Aug: 64.8 mm (2.6 in), 7 August 1962 Aug Sep: 128.5 mm (5.1 in), 11 September 1954 Sep Oct: 51.1 mm (2.0 in), 21 October 1968 Oct Nov: 54.4 mm (2.1 in), 27 November 1950 Nov Dec: 70.4 mm (2.8 in), 3 December 1980 Dec
The wettest day on record for each calendar month at Caplan. The most was 128.5 mm (5.1 in) on 11 September 1954.
Record daily precipitation for each month at Caplan
MonthRecord daily precipitation (mm)Date
Jan36.4 mm (1.4 in)22 January 1981
Feb55.9 mm (2.2 in)13 February 1978
Mar49.0 mm (1.9 in)4 March 1971
Apr51.8 mm (2.0 in)30 April 1979
May46.5 mm (1.8 in)31 May 1972
Jun65.0 mm (2.6 in)24 June 1972
Jul97.2 mm (3.8 in)22 July 1982
Aug64.8 mm (2.6 in)7 August 1962
Sep128.5 mm (5.1 in)11 September 1954
Oct51.1 mm (2.0 in)21 October 1968
Nov54.4 mm (2.1 in)27 November 1950
Dec70.4 mm (2.8 in)3 December 1980

Period of Record Coverage

1947 to 1983
Days with data per year at Caplan 35 years of record at Caplan, 1947 to 1983. 4 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1973, 1976. 1947: 275 of 365 days1948: 271 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 274 of 365 days1976: 99 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 364 of 365 days195019551960196519701980
35 years of record at Caplan, 1947 to 1983. 4 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1973, 1976.
Days with data per year at Caplan
YearDays with dataShare of yearComplete
194727575%No
194827174%No
1949365100%Yes
1950365100%Yes
1951364100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962364100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
197327475%No
19769927%No
1977365100%Yes
1978365100%Yes
1979364100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983364100%Yes

Latest Records

20
Latest records at Caplan
DateStationRecordValueBeat old record byOld record stoodSignificance
28 December 1983Caplan, CAdaily snowfall15.6 cm (6.1 in)1.6 cm (0.6 in)26 years13 of 100 (Routine)
20 December 1983Caplan, CAdaily low min-24.0 C (-11.2 F)0.7 C (1.3 F)10 years7 of 100 (Routine)
15 December 1983Caplan, CAdaily high max4.0 C (39.2 F)0.1 C (0.2 F)29 years11 of 100 (Routine)
15 December 1983Caplan, CAdaily high min0.0 C (32.0 F)0.6 C (1.1 F)14 years7 of 100 (Routine)
6 December 1983Caplan, CAdaily rain44.2 mm (1.7 in)12.8 mm (0.5 in)1 year18 of 100 (Routine)
29 November 1983Caplan, CAmonthly snowfall19.4 cm (7.6 in)1.6 cm (0.6 in)25 years24 of 100 (Routine)
21 November 1983Caplan, CAdaily snowfall10.6 cm (4.2 in)1.7 cm (0.7 in)34 years17 of 100 (Routine)
11 November 1983Caplan, CAdaily rain19.6 mm (0.8 in)13.0 mm (0.5 in)20 years20 of 100 (Routine)
6 November 1983Caplan, CAdaily rain25.2 mm (1.0 in)18.3 mm (0.7 in)28 years31 of 100 (Routine)
14 October 1983Caplan, CAmonthly high min12.5 C (54.5 F)0.3 C (0.5 F)34 years23 of 100 (Routine)
14 October 1983Caplan, CAdaily high max19.0 C (66.2 F)1.8 C (3.2 F)33 years17 of 100 (Routine)
22 September 1983Caplan, CAdaily high min16.0 C (60.8 F)1.0 C (1.8 F)14 years9 of 100 (Routine)
22 September 1983Caplan, CAdaily rain16.4 mm (0.6 in)1.4 mm (0.06 in)14 years8 of 100 (Routine)
7 September 1983Caplan, CAdaily high min17.0 C (62.6 F)2.0 C (3.6 F)29 years15 of 100 (Routine)
6 September 1983Caplan, CAmonthly high min18.5 C (65.3 F)0.2 C (0.4 F)22 years19 of 100 (Routine)
6 September 1983Caplan, CAdaily high max27.0 C (80.6 F)0.9 C (1.6 F)34 years15 of 100 (Routine)
5 September 1983Caplan, CAdaily high max (Tie)25.0 C (77.0 F)tie33 years3 of 100 (Routine)
19 August 1983Caplan, CAdaily high min17.0 C (62.6 F)0.3 C (0.5 F)36 years13 of 100 (Routine)
13 August 1983Caplan, CAdaily low min6.0 C (42.8 F)1.2 C (2.2 F)12 years9 of 100 (Routine)
30 July 1983Caplan, CAdaily high min19.5 C (67.1 F)0.6 C (1.1 F)20 years10 of 100 (Routine)

Climate Trend

31 complete years, 1949 to 1983
Annual mean temperature at Caplan as warming stripes, 1949 to 1983 One stripe for each of 31 complete years at Caplan, 1949 to 1983. Blue stripes are years cooler than the station's own mean of 4.2 C (39.5 F); red stripes are warmer. The coolest year was 1972, at 2.6 C (36.6 F), and the warmest was 1981, at 5.3 C (41.5 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1949: 4.1 C, -0.1 C from the station mean1950: 3.7 C, -0.5 C from the station mean1951: 4.6 C, +0.4 C from the station mean1952: 4.7 C, +0.6 C from the station mean1953: 5.2 C, +1.1 C from the station mean1954: 4.3 C, +0.1 C from the station mean1955: 4.7 C, +0.5 C from the station mean1956: 3.9 C, -0.3 C from the station mean1957: 4.0 C, -0.1 C from the station mean1958: 4.4 C, +0.2 C from the station mean1959: 4.0 C, -0.2 C from the station mean1960: 4.9 C, +0.7 C from the station mean1961: 4.3 C, +0.1 C from the station mean1962: 3.7 C, -0.5 C from the station mean1963: 3.8 C, -0.3 C from the station mean1964: 3.6 C, -0.5 C from the station mean1965: 3.4 C, -0.7 C from the station mean1966: 5.1 C, +0.9 C from the station mean1967: 4.0 C, -0.2 C from the station mean1968: 4.2 C, 0.0 C from the station mean1969: 4.9 C, +0.7 C from the station mean1970: 4.2 C, 0.0 C from the station mean1971: 4.0 C, -0.2 C from the station mean1972: 2.6 C, -1.6 C from the station mean1977: 3.9 C, -0.2 C from the station mean1978: 3.0 C, -1.2 C from the station mean1979: 5.1 C, +0.9 C from the station mean1980: 3.8 C, -0.3 C from the station mean1981: 5.3 C, +1.1 C from the station mean1982: 3.6 C, -0.6 C from the station mean1983: 4.6 C, +0.4 C from the station mean1949195519601965197019751980
One stripe for each of 31 complete years at Caplan, 1949 to 1983. Blue stripes are years cooler than the station's own mean of 4.2 C (39.5 F); red stripes are warmer. The coolest year was 1972, at 2.6 C (36.6 F), and the warmest was 1981, at 5.3 C (41.5 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Caplan as warming stripes, 1949 to 1983
YearAnnual mean temperatureDifference from the station mean
19494.1 C-0.13 C
19503.7 C-0.46 C
19514.6 C+0.37 C
19524.7 C+0.55 C
19535.2 C+1.05 C
19544.3 C+0.13 C
19554.7 C+0.53 C
19563.9 C-0.26 C
19574.0 C-0.15 C
19584.4 C+0.21 C
19594.0 C-0.20 C
19604.9 C+0.68 C
19614.3 C+0.08 C
19623.7 C-0.47 C
19633.8 C-0.35 C
19643.6 C-0.54 C
19653.4 C-0.74 C
19665.1 C+0.87 C
19674.0 C-0.20 C
19684.2 C-0.03 C
19694.9 C+0.73 C
19704.2 C+0.02 C
19714.0 C-0.17 C
19722.6 C-1.60 C
19773.9 C-0.24 C
19783.0 C-1.19 C
19795.1 C+0.90 C
19803.8 C-0.34 C
19815.3 C+1.12 C
19823.6 C-0.59 C
19834.6 C+0.41 C

The fitted trend in annual mean temperature here over 1949 to 1983 is -0.1 C (-0.3 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.6 to 0.3) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Caplan
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.3 to 0.2) per decade-0.1 F (-0.6 to 0.3) per decade1949 to 198331Not clearly different from zero
Mean daily maximum-0.03 C (-0.23 to 0.18) per decade-0.05 F (-0.41 to 0.32) per decade1949 to 198331Not clearly different from zero
Mean daily minimum-0.1 C (-0.4 to 0.2) per decade-0.2 F (-0.7 to 0.3) per decade1949 to 198331Not clearly different from zero

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

1947 to 1983
Yearly extremes at Caplan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.4 C (93.9 F)195229.4 C (84.9 F)35
Coldest night (TNn)-30.6 C (-23.1 F)1951-26.7 C (-16.1 F)35
Wettest day (Rx1day)128.5 mm (5.1 in)195450.8 mm (2.0 in)35
Wettest five days (Rx5day)131.8 mm (5.2 in)195474.6 mm (2.9 in)35
Longest dry spell (CDD)28 days196216 days35

Hottest day (TXx)

Hottest day (TXx) at Caplan by year The hottest day of the year at Caplan, 1947 to 1983. The record is 34.4 C (93.9 F) in 1952, marked on the chart; the median year is 29.4 C (84.9 F). 202530351950196019701980Record: 34.4 C (93.9 F) in 1952
The hottest day of the year at Caplan, 1947 to 1983. The record is 34.4 C (93.9 F) in 1952, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Caplan by year
YearHottest day (TXx)
194731.7 C (89.1 F)
194833.3 C (91.9 F)
194931.1 C (88.0 F)
195029.4 C (84.9 F)
195128.9 C (84.0 F)
195234.4 C (93.9 F)
195332.2 C (90.0 F)
195426.1 C (79.0 F)
195532.2 C (90.0 F)
195626.7 C (80.1 F)
195728.3 C (82.9 F)
195826.7 C (80.1 F)
195931.1 C (88.0 F)
196030.6 C (87.1 F)
196127.8 C (82.0 F)
196228.3 C (82.9 F)
196332.2 C (90.0 F)
196428.3 C (82.9 F)
196528.9 C (84.0 F)
196628.3 C (82.9 F)
196729.4 C (84.9 F)
196828.9 C (84.0 F)
196930.6 C (87.1 F)
197030.0 C (86.0 F)
197129.4 C (84.9 F)
197228.3 C (82.9 F)
197328.3 C (82.9 F)
197621.1 C (70.0 F)
197729.4 C (84.9 F)
197829.4 C (84.9 F)
197929.4 C (84.9 F)
198027.0 C (80.6 F)
198130.0 C (86.0 F)
198232.5 C (90.5 F)
198330.0 C (86.0 F)

Coldest night (TNn)

Coldest night (TNn) at Caplan by year The coldest night of the year at Caplan, 1947 to 1983. The record is -30.6 C (-23.1 F) in 1951, marked on the chart; the median year is -26.7 C (-16.1 F). -35-30-25-20-151950196019701980Record: -30.6 C (-23.1 F) in 1951
The coldest night of the year at Caplan, 1947 to 1983. The record is -30.6 C (-23.1 F) in 1951, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Caplan by year
YearColdest night (TNn)
1947-16.1 C (3.0 F)
1948-27.8 C (-18.0 F)
1949-26.1 C (-15.0 F)
1950-30.0 C (-22.0 F)
1951-30.6 C (-23.1 F)
1952-26.7 C (-16.1 F)
1953-21.7 C (-7.1 F)
1954-26.1 C (-15.0 F)
1955-25.6 C (-14.1 F)
1956-22.8 C (-9.0 F)
1957-30.6 C (-23.1 F)
1958-25.6 C (-14.1 F)
1959-26.7 C (-16.1 F)
1960-27.8 C (-18.0 F)
1961-25.6 C (-14.1 F)
1962-27.8 C (-18.0 F)
1963-27.8 C (-18.0 F)
1964-22.8 C (-9.0 F)
1965-27.2 C (-17.0 F)
1966-29.4 C (-20.9 F)
1967-26.7 C (-16.1 F)
1968-26.7 C (-16.1 F)
1969-20.0 C (-4.0 F)
1970-26.1 C (-15.0 F)
1971-27.8 C (-18.0 F)
1972-27.2 C (-17.0 F)
1973-27.2 C (-17.0 F)
1976-24.4 C (-11.9 F)
1977-27.2 C (-17.0 F)
1978-25.0 C (-13.0 F)
1979-26.1 C (-15.0 F)
1980-27.0 C (-16.6 F)
1981-28.5 C (-19.3 F)
1982-30.5 C (-22.9 F)
1983-24.0 C (-11.2 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Caplan by year The wettest day of the year at Caplan, 1947 to 1983. The record is 128.5 mm (5.1 in) in 1954, marked on the chart; the median year is 50.8 mm (2.0 in). 0501001501950196019701980Record: 128.5 mm (5.1 in) in 1954
The wettest day of the year at Caplan, 1947 to 1983. The record is 128.5 mm (5.1 in) in 1954, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Caplan by year
YearWettest day (Rx1day)
194719.6 mm (0.8 in)
194843.2 mm (1.7 in)
194941.1 mm (1.6 in)
195054.4 mm (2.1 in)
195156.6 mm (2.2 in)
195245.7 mm (1.8 in)
195350.8 mm (2.0 in)
1954128.5 mm (5.1 in)
195561.0 mm (2.4 in)
195647.5 mm (1.9 in)
195735.6 mm (1.4 in)
195851.8 mm (2.0 in)
195945.7 mm (1.8 in)
196055.9 mm (2.2 in)
196151.8 mm (2.0 in)
196264.8 mm (2.6 in)
196333.3 mm (1.3 in)
196473.7 mm (2.9 in)
196555.9 mm (2.2 in)
196635.6 mm (1.4 in)
196740.6 mm (1.6 in)
196851.1 mm (2.0 in)
196991.2 mm (3.6 in)
197042.9 mm (1.7 in)
197149.0 mm (1.9 in)
197265.0 mm (2.6 in)
197338.6 mm (1.5 in)
197635.1 mm (1.4 in)
197749.5 mm (1.9 in)
197855.9 mm (2.2 in)
197971.9 mm (2.8 in)
198070.4 mm (2.8 in)
198147.0 mm (1.9 in)
198297.2 mm (3.8 in)
198344.2 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Caplan by year The wettest five days of the year at Caplan, 1947 to 1983. The record is 131.8 mm (5.2 in) in 1954, marked on the chart; the median year is 74.6 mm (2.9 in). 2550751001251501950196019701980Record: 131.8 mm (5.2 in) in 1954
The wettest five days of the year at Caplan, 1947 to 1983. The record is 131.8 mm (5.2 in) in 1954, marked on the chart; the median year is 74.6 mm (2.9 in).
Wettest five days (Rx5day) at Caplan by year
YearWettest five days (Rx5day)
194738.8 mm (1.5 in)
194871.4 mm (2.8 in)
194947.1 mm (1.9 in)
1950125.0 mm (4.9 in)
195174.6 mm (2.9 in)
195258.2 mm (2.3 in)
195370.1 mm (2.8 in)
1954131.8 mm (5.2 in)
1955105.9 mm (4.2 in)
195665.5 mm (2.6 in)
195769.4 mm (2.7 in)
195885.1 mm (3.4 in)
1959100.1 mm (3.9 in)
196097.5 mm (3.8 in)
196179.2 mm (3.1 in)
196291.0 mm (3.6 in)
196364.0 mm (2.5 in)
1964116.2 mm (4.6 in)
196573.5 mm (2.9 in)
196668.7 mm (2.7 in)
196774.3 mm (2.9 in)
196878.0 mm (3.1 in)
1969110.7 mm (4.4 in)
197064.0 mm (2.5 in)
197169.7 mm (2.7 in)
1972122.5 mm (4.8 in)
197369.1 mm (2.7 in)
197658.7 mm (2.3 in)
197798.5 mm (3.9 in)
197859.5 mm (2.3 in)
1979113.6 mm (4.5 in)
198094.4 mm (3.7 in)
198183.8 mm (3.3 in)
1982110.8 mm (4.4 in)
198351.6 mm (2.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Caplan by year The longest dry spell of the year at Caplan, 1947 to 1983. The record is 28 days in 1962, marked on the chart; the median year is 16 days. 10152025301950196019701980Record: 28 days in 1962
The longest dry spell of the year at Caplan, 1947 to 1983. The record is 28 days in 1962, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Caplan by year
YearLongest dry spell (CDD)
194723 days
194818 days
194913 days
195017 days
195115 days
195214 days
195316 days
195413 days
195517 days
195619 days
195718 days
195816 days
195917 days
196016 days
196121 days
196228 days
196314 days
196414 days
196512 days
196613 days
196713 days
196811 days
196920 days
197022 days
197111 days
197212 days
197314 days
197624 days
197714 days
197817 days
197913 days
198023 days
198115 days
198220 days
198310 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

31 years with a frost

Across 31 years with a frost, the median last spring frost at Caplan falls on 18 May and the median first autumn frost on 5 October, which leaves a median of 140 days between them.

Fitted over all years, the growing season changes by -1.5 days per decade at this station.

Frost dates and growing season at Caplan
MeasureMedian, all yearsEarliest periodRecent period (1950 to 1983)Recent against earliestFitted trend
Last spring frost18 Mayn/a18 Mayn/a+2.2 days per decade
First autumn frost5 Octobern/a6 Octobern/a+0.7 days per decade
Growing days140 daysn/a141 daysn/a-1.5 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

31 years, 1949 to 1983

A day with at least 51.6 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 138.0 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Caplan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years51.6 mm (2.0 in)
5 years67.1 mm (2.6 in)
10 years79.9 mm (3.1 in)
25 years99.6 mm (3.9 in)
50 years117.3 mm (4.6 in)Longer than the 31 years of record
100 years138.0 mm (5.4 in)Longer than the 31 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, 31 years of values from 1949 to 1983.

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: 128.5 mm (5.1 in) in 1954; 97.2 mm (3.8 in) in 1982; 91.2 mm (3.6 in) in 1969.

Download the Data

  • Data for Caplan standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Caplan 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).