Built 2026-10-17 (17 October 2026)

Chats Falls Weather Records (CA006101440)

Record envelope, standing records and threshold days for Chats Falls (CA006101440), Ontario, Canada, with 43 years of record.

Key Facts for Chats Falls

  • Chats Falls (CA006101440) is a weather station in Ontario, Canada at 45.47 latitude and -76.23 longitude, 94 m (308 ft) above sea level.
  • The station reports from 1950 to 1992, 43 years of record.
  • 1,464 records set at Chats Falls still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Chats Falls set a daily record low minimum temperature of -27.0 C (-16.6 F) on 30 December 1983.

About the Station

  • Location: Ontario, Canada, 45.47 latitude, -76.23 longitude.
  • Elevation: 94 m (308 ft).
  • Period of record: 1950 to 1992, 43 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 Chats Falls, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chats Falls. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Chats Falls. 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 Chats Falls, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan10.0 C (50.0 F)-41.1 C (-42.0 F)n/an/a
Feb12.8 C (55.0 F)-40.0 C (-40.0 F)n/an/a
Mar21.7 C (71.1 F)-29.0 C (-20.2 F)n/an/a
Apr29.4 C (84.9 F)-17.8 C (0.0 F)n/an/a
May35.0 C (95.0 F)-6.7 C (19.9 F)n/an/a
Jun34.4 C (93.9 F)-1.1 C (30.0 F)n/an/a
Jul37.2 C (99.0 F)3.3 C (37.9 F)n/an/a
Aug37.8 C (100.0 F)2.2 C (36.0 F)n/an/a
Sep35.6 C (96.1 F)-5.0 C (23.0 F)n/an/a
Oct28.9 C (84.0 F)-7.8 C (18.0 F)n/an/a
Nov21.1 C (70.0 F)-22.8 C (-9.0 F)n/an/a
Dec14.4 C (57.9 F)-38.9 C (-38.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chats Falls by the year they were set 1,464 records at Chats Falls still stand. 1956 holds the most, with 86. 02550751001950: 461951: 811952: 191953: 311954: 471955: 701956: 861957: 621958: 541959: 721960: 241961: 321962: 291963: 471964: 501965: 411966: 391967: 291968: 491969: 161970: 391971: 331972: 251973: 421974: 241975: 481976: 481977: 391978: 341979: 531980: 321981: 441982: 421983: 37195019541958196219661970197419781982
1,464 records at Chats Falls still stand. 1956 holds the most, with 86.
Standing records at Chats Falls by the year they were set
Year setStanding records
195046
195181
195219
195331
195447
195570
195686
195762
195854
195972
196024
196132
196229
196347
196450
196541
196639
196729
196849
196916
197039
197133
197225
197342
197424
197548
197648
197739
197834
197953
198032
198144
198242
198337

Wettest Day of Each Month

Oct: 79.0 mm (3.1 in)
Record daily precipitation for each month at Chats Falls The wettest day on record for each calendar month at Chats Falls. The most was 79.0 mm (3.1 in) on 15 October 1955. 020406080 Jan: 50.8 mm (2.0 in), 28 January 1970 Jan Feb: 38.1 mm (1.5 in), 3 February 1972 Feb Mar: 47.5 mm (1.9 in), 21 March 1980 Mar Apr: 38.6 mm (1.5 in), 20 April 1982 Apr May: 38.6 mm (1.5 in), 12 May 1974 May Jun: 53.8 mm (2.1 in), 28 June 1957 Jun Jul: 53.6 mm (2.1 in), 2 July 1964 Jul Aug: 52.8 mm (2.1 in), 1 August 1973 Aug Sep: 72.4 mm (2.9 in), 20 September 1957 Sep Oct: 79.0 mm (3.1 in), 15 October 1955 Oct Nov: 37.3 mm (1.5 in), 20 November 1974 Nov Dec: 36.8 mm (1.4 in), 20 December 1973 Dec
The wettest day on record for each calendar month at Chats Falls. The most was 79.0 mm (3.1 in) on 15 October 1955.
Record daily precipitation for each month at Chats Falls
MonthRecord daily precipitation (mm)Date
Jan50.8 mm (2.0 in)28 January 1970
Feb38.1 mm (1.5 in)3 February 1972
Mar47.5 mm (1.9 in)21 March 1980
Apr38.6 mm (1.5 in)20 April 1982
May38.6 mm (1.5 in)12 May 1974
Jun53.8 mm (2.1 in)28 June 1957
Jul53.6 mm (2.1 in)2 July 1964
Aug52.8 mm (2.1 in)1 August 1973
Sep72.4 mm (2.9 in)20 September 1957
Oct79.0 mm (3.1 in)15 October 1955
Nov37.3 mm (1.5 in)20 November 1974
Dec36.8 mm (1.4 in)20 December 1973

Period of Record Coverage

1950 to 1983
Days with data per year at Chats Falls 34 years of record at Chats Falls, 1950 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1950, 1952, 1953, 1972, 1979. 1950: 189 of 365 days1951: 365 of 365 days1952: 153 of 366 days1953: 160 of 365 days1954: 360 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: 334 of 365 days1963: 365 of 365 days1964: 365 of 366 days1965: 335 of 365 days1966: 356 of 365 days1967: 358 of 365 days1968: 366 of 366 days1969: 333 of 365 days1970: 356 of 365 days1971: 365 of 365 days1972: 244 of 366 days1973: 335 of 365 days1974: 334 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 301 of 365 days1980: 362 of 366 days1981: 364 of 365 days1982: 362 of 365 days1983: 364 of 365 days1950195519601965197019751980
34 years of record at Chats Falls, 1950 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1950, 1952, 1953, 1972, 1979.
Days with data per year at Chats Falls
YearDays with dataShare of yearComplete
195018952%No
1951365100%Yes
195215342%No
195316044%No
195436099%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
196233492%Yes
1963365100%Yes
1964365100%Yes
196533592%Yes
196635698%Yes
196735898%Yes
1968366100%Yes
196933391%Yes
197035698%Yes
1971365100%Yes
197224467%No
197333592%Yes
197433492%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
197930182%No
198036299%Yes
1981364100%Yes
198236299%Yes
1983364100%Yes

Latest Records

20
Latest records at Chats Falls
DateStationRecordValueBeat old record byOld record stoodSignificance
30 December 1983Chats Falls, CAdaily low min-27.0 C (-16.6 F)0.3 C (0.5 F)26 years11 of 100 (Routine)
28 December 1983Chats Falls, CAdaily rain18.0 mm (0.7 in)2.8 mm (0.11 in)14 years12 of 100 (Routine)
28 December 1983Chats Falls, CAdaily snowfall18.0 cm (7.1 in)2.8 cm (1.1 in)14 years12 of 100 (Routine)
15 December 1983Chats Falls, CAdaily high min0.0 C (32.0 F)1.0 C (1.8 F)0 years4 of 100 (Routine)
4 December 1983Chats Falls, CAdaily snowfall8.0 cm (3.1 in)0.4 cm (0.2 in)28 years11 of 100 (Routine)
30 November 1983Chats Falls, CAdaily high min (Tie)0.0 C (32.0 F)tie16 years2 of 100 (Routine)
16 November 1983Chats Falls, CAdaily rain18.5 mm (0.7 in)1.0 mm (0.04 in)17 years9 of 100 (Routine)
14 November 1983Chats Falls, CAdaily low min (Tie)-10.0 C (14.0 F)tie12 years1 of 100 (Routine)
11 November 1983Chats Falls, CAdaily snowfall3.0 cm (1.2 in)1.7 cm (0.7 in)12 years9 of 100 (Routine)
13 October 1983Chats Falls, CAdaily high min14.0 C (57.2 F)1.2 C (2.2 F)9 years7 of 100 (Routine)
12 October 1983Chats Falls, CAdaily rain10.0 mm (0.4 in)2.7 mm (0.11 in)4 years7 of 100 (Routine)
4 October 1983Chats Falls, CAdaily rain13.5 mm (0.5 in)4.3 mm (0.17 in)2 years8 of 100 (Routine)
3 October 1983Chats Falls, CAmonthly high min16.0 C (60.8 F)0.4 C (0.7 F)28 years21 of 100 (Routine)
2 October 1983Chats Falls, CAdaily high min (Tie)15.0 C (59.0 F)tie12 years1 of 100 (Routine)
20 September 1983Chats Falls, CAdaily high max29.0 C (84.2 F)1.2 C (2.2 F)17 years10 of 100 (Routine)
19 September 1983Chats Falls, CAdaily high min (Tie)15.0 C (59.0 F)tie28 years2 of 100 (Routine)
10 September 1983Chats Falls, CAdaily high min20.0 C (68.0 F)1.7 C (3.1 F)21 years12 of 100 (Routine)
7 September 1983Chats Falls, CAdaily high min18.0 C (64.4 F)1.3 C (2.3 F)22 years11 of 100 (Routine)
6 September 1983Chats Falls, CAdaily high min21.0 C (69.8 F)2.0 C (3.6 F)4 years8 of 100 (Routine)
30 July 1983Chats Falls, CAdaily high min21.0 C (69.8 F)0.4 C (0.7 F)12 years7 of 100 (Routine)

Climate Trend

20 complete years, 1951 to 1983
Annual mean temperature at Chats Falls as warming stripes, 1951 to 1983 One stripe for each of 20 complete years at Chats Falls, 1951 to 1983. Blue stripes are years cooler than the station's own mean of 5.8 C (42.4 F); red stripes are warmer. The coolest year was 1951, at 4.7 C (40.5 F), and the warmest was 1983, at 6.6 C (43.9 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1951: 4.7 C, -1.0 C from the station mean1954: 5.6 C, -0.2 C from the station mean1955: 6.0 C, +0.2 C from the station mean1956: 4.8 C, -1.0 C from the station mean1957: 6.3 C, +0.5 C from the station mean1958: 5.1 C, -0.7 C from the station mean1961: 6.4 C, +0.6 C from the station mean1964: 6.2 C, +0.4 C from the station mean1966: 6.2 C, +0.4 C from the station mean1968: 5.7 C, 0.0 C from the station mean1970: 5.3 C, -0.5 C from the station mean1971: 5.6 C, -0.2 C from the station mean1975: 6.5 C, +0.7 C from the station mean1976: 4.9 C, -0.9 C from the station mean1977: 6.3 C, +0.5 C from the station mean1978: 5.3 C, -0.5 C from the station mean1980: 5.7 C, 0.0 C from the station mean1981: 6.6 C, +0.8 C from the station mean1982: 5.7 C, -0.1 C from the station mean1983: 6.6 C, +0.8 C from the station mean1951195519601965197019751980
One stripe for each of 20 complete years at Chats Falls, 1951 to 1983. Blue stripes are years cooler than the station's own mean of 5.8 C (42.4 F); red stripes are warmer. The coolest year was 1951, at 4.7 C (40.5 F), and the warmest was 1983, at 6.6 C (43.9 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Chats Falls as warming stripes, 1951 to 1983
YearAnnual mean temperatureDifference from the station mean
19514.7 C-1.03 C
19545.6 C-0.17 C
19556.0 C+0.18 C
19564.8 C-1.01 C
19576.3 C+0.49 C
19585.1 C-0.67 C
19616.4 C+0.61 C
19646.2 C+0.44 C
19666.2 C+0.44 C
19685.7 C-0.04 C
19705.3 C-0.48 C
19715.6 C-0.21 C
19756.5 C+0.74 C
19764.9 C-0.88 C
19776.3 C+0.50 C
19785.3 C-0.50 C
19805.7 C-0.04 C
19816.6 C+0.84 C
19825.7 C-0.06 C
19836.6 C+0.84 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

1950 to 1983
Yearly extremes at Chats Falls: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)197532.8 C (91.0 F)34
Coldest night (TNn)-41.1 C (-42.0 F)1957-33.3 C (-27.9 F)34
Wettest day (Rx1day)79.0 mm (3.1 in)195538.1 mm (1.5 in)34
Wettest five days (Rx5day)131.1 mm (5.2 in)195758.1 mm (2.3 in)34
Longest dry spell (CDD)23 days197815 days34

Hottest day (TXx)

Hottest day (TXx) at Chats Falls by year The hottest day of the year at Chats Falls, 1950 to 1983. The record is 37.8 C (100.0 F) in 1975, marked on the chart; the median year is 32.8 C (91.0 F). 27.53032.53537.5401950196019701980Record: 37.8 C (100.0 F) in 1975
The hottest day of the year at Chats Falls, 1950 to 1983. The record is 37.8 C (100.0 F) in 1975, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Chats Falls by year
YearHottest day (TXx)
195032.2 C (90.0 F)
195131.7 C (89.1 F)
195227.8 C (82.0 F)
195336.7 C (98.1 F)
195432.2 C (90.0 F)
195537.2 C (99.0 F)
195634.4 C (93.9 F)
195734.4 C (93.9 F)
195832.8 C (91.0 F)
195934.4 C (93.9 F)
196031.7 C (89.1 F)
196131.7 C (89.1 F)
196233.9 C (93.0 F)
196335.0 C (95.0 F)
196433.9 C (93.0 F)
196532.2 C (90.0 F)
196635.0 C (95.0 F)
196731.1 C (88.0 F)
196834.4 C (93.9 F)
196932.2 C (90.0 F)
197032.2 C (90.0 F)
197133.3 C (91.9 F)
197228.9 C (84.0 F)
197333.3 C (91.9 F)
197432.8 C (91.0 F)
197537.8 C (100.0 F)
197632.2 C (90.0 F)
197737.2 C (99.0 F)
197835.0 C (95.0 F)
197931.0 C (87.8 F)
198032.0 C (89.6 F)
198132.0 C (89.6 F)
198233.0 C (91.4 F)
198332.0 C (89.6 F)

Coldest night (TNn)

Coldest night (TNn) at Chats Falls by year The coldest night of the year at Chats Falls, 1950 to 1983. The record is -41.1 C (-42.0 F) in 1957, marked on the chart; the median year is -33.3 C (-27.9 F). -45-40-35-30-251950196019701980Record: -41.1 C (-42.0 F) in 1957
The coldest night of the year at Chats Falls, 1950 to 1983. The record is -41.1 C (-42.0 F) in 1957, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at Chats Falls by year
YearColdest night (TNn)
1950-35.0 C (-31.0 F)
1951-40.0 C (-40.0 F)
1952-30.0 C (-22.0 F)
1953-30.6 C (-23.1 F)
1954-36.1 C (-33.0 F)
1955-35.6 C (-32.1 F)
1956-30.0 C (-22.0 F)
1957-41.1 C (-42.0 F)
1958-32.2 C (-26.0 F)
1959-37.8 C (-36.0 F)
1960-31.7 C (-25.1 F)
1961-31.1 C (-24.0 F)
1962-37.2 C (-35.0 F)
1963-36.7 C (-34.1 F)
1964-31.1 C (-24.0 F)
1965-33.3 C (-27.9 F)
1966-33.3 C (-27.9 F)
1967-31.1 C (-24.0 F)
1968-33.9 C (-29.0 F)
1969-26.1 C (-15.0 F)
1970-36.7 C (-34.1 F)
1971-37.2 C (-35.0 F)
1972-37.2 C (-35.0 F)
1973-33.9 C (-29.0 F)
1974-32.8 C (-27.0 F)
1975-31.7 C (-25.1 F)
1976-38.3 C (-36.9 F)
1977-35.6 C (-32.1 F)
1978-30.0 C (-22.0 F)
1979-32.0 C (-25.6 F)
1980-31.5 C (-24.7 F)
1981-36.0 C (-32.8 F)
1982-33.0 C (-27.4 F)
1983-28.0 C (-18.4 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chats Falls by year The wettest day of the year at Chats Falls, 1950 to 1983. The record is 79.0 mm (3.1 in) in 1955, marked on the chart; the median year is 38.1 mm (1.5 in). 204060801950196019701980Record: 79.0 mm (3.1 in) in 1955
The wettest day of the year at Chats Falls, 1950 to 1983. The record is 79.0 mm (3.1 in) in 1955, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest day (Rx1day) at Chats Falls by year
YearWettest day (Rx1day)
195048.5 mm (1.9 in)
195133.0 mm (1.3 in)
195237.8 mm (1.5 in)
195339.1 mm (1.5 in)
195436.1 mm (1.4 in)
195579.0 mm (3.1 in)
195635.8 mm (1.4 in)
195772.4 mm (2.9 in)
195843.9 mm (1.7 in)
195955.6 mm (2.2 in)
196028.2 mm (1.1 in)
196122.4 mm (0.9 in)
196230.5 mm (1.2 in)
196335.8 mm (1.4 in)
196453.6 mm (2.1 in)
196532.8 mm (1.3 in)
196632.0 mm (1.3 in)
196748.3 mm (1.9 in)
196832.5 mm (1.3 in)
196937.6 mm (1.5 in)
197050.8 mm (2.0 in)
197144.5 mm (1.8 in)
197238.1 mm (1.5 in)
197352.8 mm (2.1 in)
197438.6 mm (1.5 in)
197532.0 mm (1.3 in)
197639.4 mm (1.6 in)
197746.0 mm (1.8 in)
197831.0 mm (1.2 in)
197938.0 mm (1.5 in)
198047.5 mm (1.9 in)
198133.0 mm (1.3 in)
198238.6 mm (1.5 in)
198322.0 mm (0.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chats Falls by year The wettest five days of the year at Chats Falls, 1950 to 1983. The record is 131.1 mm (5.2 in) in 1957, marked on the chart; the median year is 58.1 mm (2.3 in). 2550751001251501950196019701980Record: 131.1 mm (5.2 in) in 1957
The wettest five days of the year at Chats Falls, 1950 to 1983. The record is 131.1 mm (5.2 in) in 1957, marked on the chart; the median year is 58.1 mm (2.3 in).
Wettest five days (Rx5day) at Chats Falls by year
YearWettest five days (Rx5day)
195072.1 mm (2.8 in)
195143.2 mm (1.7 in)
195263.7 mm (2.5 in)
195347.2 mm (1.9 in)
195450.1 mm (2.0 in)
195599.8 mm (3.9 in)
195657.8 mm (2.3 in)
1957131.1 mm (5.2 in)
195866.0 mm (2.6 in)
195957.6 mm (2.3 in)
196042.2 mm (1.7 in)
196139.2 mm (1.5 in)
196247.4 mm (1.9 in)
196365.6 mm (2.6 in)
196462.5 mm (2.5 in)
196560.8 mm (2.4 in)
196657.2 mm (2.3 in)
196774.2 mm (2.9 in)
196851.1 mm (2.0 in)
196955.9 mm (2.2 in)
197061.0 mm (2.4 in)
197160.7 mm (2.4 in)
197254.6 mm (2.1 in)
197371.6 mm (2.8 in)
197461.3 mm (2.4 in)
197554.9 mm (2.2 in)
197664.8 mm (2.6 in)
197758.4 mm (2.3 in)
197844.7 mm (1.8 in)
197956.5 mm (2.2 in)
198062.5 mm (2.5 in)
198167.8 mm (2.7 in)
198239.0 mm (1.5 in)
198345.4 mm (1.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chats Falls by year The longest dry spell of the year at Chats Falls, 1950 to 1983. The record is 23 days in 1978, marked on the chart; the median year is 15 days. 101520251950196019701980Record: 23 days in 1978
The longest dry spell of the year at Chats Falls, 1950 to 1983. The record is 23 days in 1978, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Chats Falls by year
YearLongest dry spell (CDD)
195020 days
195115 days
195219 days
195312 days
195416 days
195515 days
195620 days
195715 days
195820 days
195916 days
196018 days
196121 days
196212 days
196316 days
196415 days
196518 days
196611 days
196718 days
196813 days
196914 days
197018 days
197112 days
197213 days
197316 days
197413 days
197516 days
197611 days
197714 days
197823 days
197912 days
198015 days
198114 days
198214 days
198316 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

20 years with a frost

Across 20 years with a frost, the median last spring frost at Chats Falls falls on 9 May and the median first autumn frost on 1 October, which leaves a median of 152 days between them.

Frost dates and growing season at Chats Falls
MeasureMedian, all yearsEarliest periodRecent period (1951 to 1983)Recent against earliestFitted trend
Last spring frost9 Mayn/a9 Mayn/an/a
First autumn frost1 Octobern/a1 Octobern/an/a
Growing days152 daysn/a152 daysn/an/a

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 Chats Falls standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chats Falls 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 (2026-10-16).