Island Falls Weather Records (CA006073840)

Record envelope, standing records and threshold days for Island Falls (CA006073840), Ontario, Canada, with 42 years of record.

Key Facts for Island Falls

Island Falls (CA006073840) is a weather station in Ontario, Canada at 49.58 latitude and -81.37 longitude, 259 m (850 ft) above sea level.
The station reports from 1955 to 1996, 42 years of record.
1,464 records set at Island Falls still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Ontario, Canada, 49.58 latitude, -81.37 longitude.
Elevation: 259 m (850 ft).
Period of record: 1955 to 1996, 42 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Island 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 Island Falls, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	6.7 C (44.1 F)	-47.0 C (-52.6 F)	n/a	n/a
Feb	8.5 C (47.3 F)	-47.2 C (-53.0 F)	n/a	n/a
Mar	18.9 C (66.0 F)	-42.8 C (-45.0 F)	n/a	n/a
Apr	23.5 C (74.3 F)	-33.3 C (-27.9 F)	n/a	n/a
May	31.7 C (89.1 F)	-12.2 C (10.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-3.3 C (26.1 F)	n/a	n/a
Jul	36.7 C (98.1 F)	-1.7 C (28.9 F)	n/a	n/a
Aug	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	31.5 C (88.7 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	25.6 C (78.1 F)	-12.5 C (9.5 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-31.7 C (-25.1 F)	n/a	n/a
Dec	13.5 C (56.3 F)	-45.0 C (-49.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Island Falls still stand. 1976 holds the most, with 69.

Standing records at Island Falls by the year they were set
Year set	Standing records
1955	49
1956	62
1957	42
1958	51
1959	53
1960	32
1961	42
1962	58
1963	58
1964	68
1965	52
1966	51
1967	49
1968	41
1969	31
1970	50
1971	35
1972	56
1973	55
1974	46
1975	64
1976	69
1977	45
1978	40
1979	48
1980	50
1981	64
1982	60
1983	43

Wettest Day of Each Month

Jul: 111.3 mm (4.4 in)

The wettest day on record for each calendar month at Island Falls. The most was 111.3 mm (4.4 in) on 11 July 1982.

Record daily precipitation for each month at Island Falls
Month	Record daily precipitation (mm)	Date
Jan	27.9 mm (1.1 in)	21 January 1972
Feb	30.5 mm (1.2 in)	10 February 1967
Mar	28.0 mm (1.1 in)	23 March 1979
Apr	26.9 mm (1.1 in)	13 April 1955
May	63.5 mm (2.5 in)	29 May 1962
Jun	47.5 mm (1.9 in)	23 June 1964
Jul	111.3 mm (4.4 in)	11 July 1982
Aug	63.2 mm (2.5 in)	21 August 1974
Sep	68.3 mm (2.7 in)	3 September 1971
Oct	65.8 mm (2.6 in)	7 October 1955
Nov	31.8 mm (1.3 in)	22 November 1970
Dec	23.9 mm (0.9 in)	10 December 1971

Period of Record Coverage

1955 to 1983

29 years of record at Island Falls, 1955 to 1983. 4 years have data for under 90 percent of days and are left out of rankings: 1955, 1963, 1965, 1966.

Days with data per year at Island Falls
Year	Days with data	Share of year	Complete
1955	306	84%	No
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	321	88%	No
1964	351	96%	Yes
1965	324	89%	No
1966	319	87%	No
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

24 complete years, 1956 to 1983

One stripe for each of 24 complete years at Island Falls, 1956 to 1983. Blue stripes are years cooler than the station's own mean of 0.3 C (32.6 F); red stripes are warmer. The coolest year was 1972, at -1.1 C (30.0 F), and the warmest was 1981, at 2.1 C (35.8 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Island Falls as warming stripes, 1956 to 1983
Year	Annual mean temperature	Difference from the station mean
1956	-0.4 C	-0.74 C
1957	0.2 C	-0.15 C
1958	0.1 C	-0.26 C
1959	-0.3 C	-0.69 C
1960	-0.2 C	-0.50 C
1961	0.3 C	-0.02 C
1962	0.3 C	-0.09 C
1967	-0.1 C	-0.44 C
1968	1.0 C	+0.62 C
1969	0.9 C	+0.53 C
1970	0.5 C	+0.19 C
1971	1.0 C	+0.62 C
1972	-1.1 C	-1.43 C
1973	1.7 C	+1.35 C
1974	-0.4 C	-0.78 C
1975	1.2 C	+0.83 C
1976	-0.5 C	-0.86 C
1977	1.7 C	+1.34 C
1978	-0.6 C	-0.94 C
1979	0.4 C	+0.03 C
1980	-0.2 C	-0.59 C
1981	2.1 C	+1.79 C
1982	-0.1 C	-0.41 C
1983	1.0 C	+0.65 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

1955 to 1983

Yearly extremes at Island Falls: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1975	32.5 C (90.5 F)	29
Coldest night (TNn)	-47.2 C (-53.0 F)	1970	-43.3 C (-45.9 F)	29
Wettest day (Rx1day)	111.3 mm (4.4 in)	1982	39.6 mm (1.6 in)	29
Wettest five days (Rx5day)	134.4 mm (5.3 in)	1982	58.0 mm (2.3 in)	29
Longest dry spell (CDD)	27 days	1969	18 days	29

Hottest day (TXx)

The hottest day of the year at Island Falls, 1955 to 1983. The record is 36.7 C (98.1 F) in 1975, marked on the chart; the median year is 32.5 C (90.5 F).

Hottest day (TXx) at Island Falls by year
Year	Hottest day (TXx)
1955	35.6 C (96.1 F)
1956	35.0 C (95.0 F)
1957	30.6 C (87.1 F)
1958	31.1 C (88.0 F)
1959	32.2 C (90.0 F)
1960	29.4 C (84.9 F)
1961	29.4 C (84.9 F)
1962	31.1 C (88.0 F)
1963	34.4 C (93.9 F)
1964	33.9 C (93.0 F)
1965	32.8 C (91.0 F)
1966	32.8 C (91.0 F)
1967	31.1 C (88.0 F)
1968	30.0 C (86.0 F)
1969	31.1 C (88.0 F)
1970	33.9 C (93.0 F)
1971	33.3 C (91.9 F)
1972	31.7 C (89.1 F)
1973	31.7 C (89.1 F)
1974	33.3 C (91.9 F)
1975	36.7 C (98.1 F)
1976	35.0 C (95.0 F)
1977	34.0 C (93.2 F)
1978	32.5 C (90.5 F)
1979	32.5 C (90.5 F)
1980	31.5 C (88.7 F)
1981	34.0 C (93.2 F)
1982	31.5 C (88.7 F)
1983	33.0 C (91.4 F)

Coldest night (TNn)

The coldest night of the year at Island Falls, 1955 to 1983. The record is -47.2 C (-53.0 F) in 1970, marked on the chart; the median year is -43.3 C (-45.9 F).

Coldest night (TNn) at Island Falls by year
Year	Coldest night (TNn)
1955	-37.8 C (-36.0 F)
1956	-40.6 C (-41.1 F)
1957	-46.1 C (-51.0 F)
1958	-41.1 C (-42.0 F)
1959	-43.3 C (-45.9 F)
1960	-42.8 C (-45.0 F)
1961	-42.8 C (-45.0 F)
1962	-45.6 C (-50.1 F)
1963	-46.7 C (-52.1 F)
1964	-43.9 C (-47.0 F)
1965	-44.4 C (-47.9 F)
1966	-43.3 C (-45.9 F)
1967	-46.1 C (-51.0 F)
1968	-44.4 C (-47.9 F)
1969	-35.6 C (-32.1 F)
1970	-47.2 C (-53.0 F)
1971	-41.1 C (-42.0 F)
1972	-43.3 C (-45.9 F)
1973	-42.8 C (-45.0 F)
1974	-43.9 C (-47.0 F)
1975	-46.1 C (-51.0 F)
1976	-44.4 C (-47.9 F)
1977	-42.2 C (-44.0 F)
1978	-40.0 C (-40.0 F)
1979	-45.0 C (-49.0 F)
1980	-41.0 C (-41.8 F)
1981	-46.0 C (-50.8 F)
1982	-47.0 C (-52.6 F)
1983	-42.0 C (-43.6 F)

Wettest day (Rx1day)

The wettest day of the year at Island Falls, 1955 to 1983. The record is 111.3 mm (4.4 in) in 1982, marked on the chart; the median year is 39.6 mm (1.6 in).

Wettest day (Rx1day) at Island Falls by year
Year	Wettest day (Rx1day)
1955	65.8 mm (2.6 in)
1956	35.3 mm (1.4 in)
1957	40.1 mm (1.6 in)
1958	26.9 mm (1.1 in)
1959	29.7 mm (1.2 in)
1960	34.0 mm (1.3 in)
1961	38.6 mm (1.5 in)
1962	63.5 mm (2.5 in)
1963	25.4 mm (1.0 in)
1964	47.5 mm (1.9 in)
1965	35.8 mm (1.4 in)
1966	33.5 mm (1.3 in)
1967	42.2 mm (1.7 in)
1968	51.8 mm (2.0 in)
1969	31.0 mm (1.2 in)
1970	41.9 mm (1.6 in)
1971	68.3 mm (2.7 in)
1972	27.9 mm (1.1 in)
1973	31.2 mm (1.2 in)
1974	63.2 mm (2.5 in)
1975	37.8 mm (1.5 in)
1976	32.3 mm (1.3 in)
1977	40.8 mm (1.6 in)
1978	39.6 mm (1.6 in)
1979	42.2 mm (1.7 in)
1980	29.8 mm (1.2 in)
1981	65.8 mm (2.6 in)
1982	111.3 mm (4.4 in)
1983	44.8 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Island Falls, 1955 to 1983. The record is 134.4 mm (5.3 in) in 1982, marked on the chart; the median year is 58.0 mm (2.3 in).

Wettest five days (Rx5day) at Island Falls by year
Year	Wettest five days (Rx5day)
1955	77.8 mm (3.1 in)
1956	53.8 mm (2.1 in)
1957	78.7 mm (3.1 in)
1958	64.3 mm (2.5 in)
1959	52.3 mm (2.1 in)
1960	49.2 mm (1.9 in)
1961	61.1 mm (2.4 in)
1962	95.5 mm (3.8 in)
1963	40.6 mm (1.6 in)
1964	65.5 mm (2.6 in)
1965	55.4 mm (2.2 in)
1966	56.0 mm (2.2 in)
1967	55.0 mm (2.2 in)
1968	91.5 mm (3.6 in)
1969	50.5 mm (2.0 in)
1970	68.6 mm (2.7 in)
1971	113.2 mm (4.5 in)
1972	57.1 mm (2.2 in)
1973	44.6 mm (1.8 in)
1974	76.2 mm (3.0 in)
1975	49.7 mm (2.0 in)
1976	39.9 mm (1.6 in)
1977	58.0 mm (2.3 in)
1978	55.6 mm (2.2 in)
1979	70.8 mm (2.8 in)
1980	48.0 mm (1.9 in)
1981	66.4 mm (2.6 in)
1982	134.4 mm (5.3 in)
1983	86.8 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Island Falls, 1955 to 1983. The record is 27 days in 1969, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Island Falls by year
Year	Longest dry spell (CDD)
1955	16 days
1956	16 days
1957	19 days
1958	23 days
1959	15 days
1960	18 days
1961	26 days
1962	20 days
1963	17 days
1964	17 days
1965	19 days
1966	23 days
1967	19 days
1968	15 days
1969	27 days
1970	14 days
1971	16 days
1972	21 days
1973	18 days
1974	16 days
1975	18 days
1976	23 days
1977	11 days
1978	23 days
1979	10 days
1980	18 days
1981	17 days
1982	11 days
1983	13 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

24 years with a frost

Across 24 years with a frost, the median last spring frost at Island Falls falls on 11 June and the median first autumn frost on 14 September, which leaves a median of 95 days between them.

Frost dates and growing season at Island Falls
Measure	Median, all years	Earliest period	Recent period (1956 to 1983)	Recent against earliest	Fitted trend
Last spring frost	11 June	n/a	11 June	n/a	n/a
First autumn frost	14 September	n/a	14 September	n/a	n/a
Growing days	95 days	n/a	95 days	n/a	n/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 Island Falls standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Island 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).