Duncan Forestry Weather Records (CA001012570)

Record envelope, standing records and threshold days for Duncan Forestry (CA001012570), British Columbia, Canada, with 32 years of record.

Key Facts for Duncan Forestry

Duncan Forestry (CA001012570) is a weather station in British Columbia, Canada at 48.77 latitude and -123.68 longitude, 6 m (20 ft) above sea level.
The station reports from 1958 to 1989, 32 years of record.
1,464 records set at Duncan Forestry still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: British Columbia, Canada, 48.77 latitude, -123.68 longitude.
Elevation: 6 m (20 ft).
Period of record: 1958 to 1989, 32 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 Duncan Forestry. 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 Duncan Forestry, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Feb	19.4 C (66.9 F)	-13.3 C (8.1 F)	n/a	n/a
Mar	21.1 C (70.0 F)	-7.8 C (18.0 F)	n/a	n/a
Apr	25.6 C (78.1 F)	-3.9 C (25.0 F)	n/a	n/a
May	33.5 C (92.3 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	33.0 C (91.4 F)	1.7 C (35.1 F)	n/a	n/a
Jul	37.2 C (99.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	36.5 C (97.7 F)	2.2 C (36.0 F)	n/a	n/a
Sep	31.5 C (88.7 F)	-3.0 C (26.6 F)	n/a	n/a
Oct	25.0 C (77.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	18.9 C (66.0 F)	-9.4 C (15.1 F)	n/a	n/a
Dec	17.0 C (62.6 F)	-21.7 C (-7.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Duncan Forestry still stand. 1962 holds the most, with 79.

Standing records at Duncan Forestry by the year they were set
Year set	Standing records
1958	37
1959	52
1960	60
1961	59
1962	79
1963	65
1964	56
1965	69
1966	57
1967	44
1968	62
1969	63
1970	48
1971	57
1972	78
1973	57
1974	44
1975	60
1976	47
1977	52
1978	45
1979	51
1980	60
1981	52
1982	49
1983	61

Wettest Day of Each Month

Jan: 73.9 mm (2.9 in)

The wettest day on record for each calendar month at Duncan Forestry. The most was 73.9 mm (2.9 in) on 28 January 1960.

Record daily precipitation for each month at Duncan Forestry
Month	Record daily precipitation (mm)	Date
Jan	73.9 mm (2.9 in)	28 January 1960
Feb	46.0 mm (1.8 in)	19 February 1983
Mar	39.8 mm (1.6 in)	8 March 1983
Apr	45.0 mm (1.8 in)	8 April 1970
May	22.9 mm (0.9 in)	1 May 1963
Jun	26.6 mm (1.0 in)	7 June 1980
Jul	23.9 mm (0.9 in)	16 July 1974
Aug	49.8 mm (2.0 in)	22 August 1975
Sep	37.6 mm (1.5 in)	20 September 1972
Oct	54.6 mm (2.1 in)	16 October 1975
Nov	59.8 mm (2.4 in)	14 November 1983
Dec	72.0 mm (2.8 in)	16 December 1979

Period of Record Coverage

1958 to 1983

26 years of record at Duncan Forestry, 1958 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1958.

Days with data per year at Duncan Forestry
Year	Days with data	Share of year	Complete
1958	182	50%	No
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	352	96%	Yes

Latest Records

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

Climate Trend

24 complete years, 1959 to 1982

One stripe for each of 24 complete years at Duncan Forestry, 1959 to 1982. Blue stripes are years cooler than the station's own mean of 9.3 C (48.8 F); red stripes are warmer. The coolest year was 1975, at 8.8 C (47.8 F), and the warmest was 1967, at 10.0 C (50.0 F). The strongest colour marks a difference of 0.7 C (1.3 F).

Annual mean temperature at Duncan Forestry as warming stripes, 1959 to 1982
Year	Annual mean temperature	Difference from the station mean
1959	9.2 C	-0.09 C
1960	9.3 C	-0.02 C
1961	9.9 C	+0.56 C
1962	9.3 C	-0.01 C
1963	9.7 C	+0.38 C
1964	8.9 C	-0.48 C
1965	9.3 C	-0.03 C
1966	9.5 C	+0.14 C
1967	10.0 C	+0.68 C
1968	9.3 C	-0.08 C
1969	9.2 C	-0.12 C
1970	9.2 C	-0.12 C
1971	8.9 C	-0.48 C
1972	8.8 C	-0.51 C
1973	9.0 C	-0.35 C
1974	9.4 C	+0.02 C
1975	8.8 C	-0.53 C
1976	9.4 C	+0.06 C
1977	9.5 C	+0.14 C
1978	9.7 C	+0.32 C
1979	9.7 C	+0.37 C
1980	9.5 C	+0.18 C
1981	9.6 C	+0.30 C
1982	9.0 C	-0.36 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

1958 to 1983

Yearly extremes at Duncan Forestry: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1958	33.2 C (91.7 F)	26
Coldest night (TNn)	-21.7 C (-7.1 F)	1968	-11.1 C (12.0 F)	26
Wettest day (Rx1day)	73.9 mm (2.9 in)	1960	50.8 mm (2.0 in)	26
Wettest five days (Rx5day)	201.4 mm (7.9 in)	1979	103.5 mm (4.1 in)	26
Longest dry spell (CDD)	56 days	1958	31 days	26

Hottest day (TXx)

The hottest day of the year at Duncan Forestry, 1958 to 1983. The record is 37.2 C (99.0 F) in 1958, marked on the chart; the median year is 33.2 C (91.7 F).

Hottest day (TXx) at Duncan Forestry by year
Year	Hottest day (TXx)
1958	37.2 C (99.0 F)
1959	33.3 C (91.9 F)
1960	35.6 C (96.1 F)
1961	36.1 C (97.0 F)
1962	29.4 C (84.9 F)
1963	30.6 C (87.1 F)
1964	29.4 C (84.9 F)
1965	36.1 C (97.0 F)
1966	33.9 C (93.0 F)
1967	31.1 C (88.0 F)
1968	32.2 C (90.0 F)
1969	31.7 C (89.1 F)
1970	32.8 C (91.0 F)
1971	34.4 C (93.9 F)
1972	32.2 C (90.0 F)
1973	31.1 C (88.0 F)
1974	34.4 C (93.9 F)
1975	30.0 C (86.0 F)
1976	28.9 C (84.0 F)
1977	34.4 C (93.9 F)
1978	35.0 C (95.0 F)
1979	33.5 C (92.3 F)
1980	30.5 C (86.9 F)
1981	36.5 C (97.7 F)
1982	33.0 C (91.4 F)
1983	33.5 C (92.3 F)

Coldest night (TNn)

The coldest night of the year at Duncan Forestry, 1958 to 1983. The record is -21.7 C (-7.1 F) in 1968, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at Duncan Forestry by year
Year	Coldest night (TNn)
1958	-7.8 C (18.0 F)
1959	-14.4 C (6.1 F)
1960	-8.3 C (17.1 F)
1961	-7.2 C (19.0 F)
1962	-12.2 C (10.0 F)
1963	-11.1 C (12.0 F)
1964	-15.0 C (5.0 F)
1965	-7.8 C (18.0 F)
1966	-9.4 C (15.1 F)
1967	-6.1 C (21.0 F)
1968	-21.7 C (-7.1 F)
1969	-21.1 C (-6.0 F)
1970	-7.2 C (19.0 F)
1971	-11.1 C (12.0 F)
1972	-16.1 C (3.0 F)
1973	-14.4 C (6.1 F)
1974	-10.6 C (12.9 F)
1975	-8.9 C (16.0 F)
1976	-6.7 C (19.9 F)
1977	-9.4 C (15.1 F)
1978	-20.0 C (-4.0 F)
1979	-14.5 C (5.9 F)
1980	-13.5 C (7.7 F)
1981	-8.0 C (17.6 F)
1982	-15.0 C (5.0 F)
1983	-16.5 C (2.3 F)

Wettest day (Rx1day)

The wettest day of the year at Duncan Forestry, 1958 to 1983. The record is 73.9 mm (2.9 in) in 1960, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Duncan Forestry by year
Year	Wettest day (Rx1day)
1958	35.3 mm (1.4 in)
1959	40.9 mm (1.6 in)
1960	73.9 mm (2.9 in)
1961	64.5 mm (2.5 in)
1962	41.9 mm (1.6 in)
1963	57.9 mm (2.3 in)
1964	44.2 mm (1.7 in)
1965	32.3 mm (1.3 in)
1966	37.6 mm (1.5 in)
1967	51.1 mm (2.0 in)
1968	71.4 mm (2.8 in)
1969	36.8 mm (1.4 in)
1970	45.0 mm (1.8 in)
1971	33.3 mm (1.3 in)
1972	55.4 mm (2.2 in)
1973	53.8 mm (2.1 in)
1974	50.5 mm (2.0 in)
1975	58.2 mm (2.3 in)
1976	52.8 mm (2.1 in)
1977	38.1 mm (1.5 in)
1978	36.3 mm (1.4 in)
1979	72.0 mm (2.8 in)
1980	57.2 mm (2.3 in)
1981	42.2 mm (1.7 in)
1982	53.4 mm (2.1 in)
1983	59.8 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Duncan Forestry, 1958 to 1983. The record is 201.4 mm (7.9 in) in 1979, marked on the chart; the median year is 103.5 mm (4.1 in).

Wettest five days (Rx5day) at Duncan Forestry by year
Year	Wettest five days (Rx5day)
1958	70.4 mm (2.8 in)
1959	103.7 mm (4.1 in)
1960	119.9 mm (4.7 in)
1961	113.1 mm (4.5 in)
1962	85.4 mm (3.4 in)
1963	136.4 mm (5.4 in)
1964	95.5 mm (3.8 in)
1965	78.0 mm (3.1 in)
1966	110.0 mm (4.3 in)
1967	101.1 mm (4.0 in)
1968	125.8 mm (5.0 in)
1969	112.7 mm (4.4 in)
1970	78.5 mm (3.1 in)
1971	87.3 mm (3.4 in)
1972	128.0 mm (5.0 in)
1973	103.3 mm (4.1 in)
1974	141.1 mm (5.6 in)
1975	101.6 mm (4.0 in)
1976	93.3 mm (3.7 in)
1977	94.5 mm (3.7 in)
1978	68.1 mm (2.7 in)
1979	201.4 mm (7.9 in)
1980	99.9 mm (3.9 in)
1981	110.2 mm (4.3 in)
1982	105.5 mm (4.2 in)
1983	126.8 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Duncan Forestry, 1958 to 1983. The record is 56 days in 1958, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Duncan Forestry by year
Year	Longest dry spell (CDD)
1958	56 days
1959	22 days
1960	35 days
1961	40 days
1962	27 days
1963	24 days
1964	19 days
1965	29 days
1966	32 days
1967	42 days
1968	21 days
1969	31 days
1970	28 days
1971	20 days
1972	32 days
1973	39 days
1974	48 days
1975	31 days
1976	20 days
1977	34 days
1978	42 days
1979	37 days
1980	16 days
1981	34 days
1982	19 days
1983	31 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 Duncan Forestry falls on 30 April and the median first autumn frost on 10 October, which leaves a median of 160 days between them.

Frost dates and growing season at Duncan Forestry
Measure	Median, all years	Earliest period	Recent period (1959 to 1982)	Recent against earliest	Fitted trend
Last spring frost	30 April	n/a	30 April	n/a	n/a
First autumn frost	10 October	n/a	10 October	n/a	n/a
Growing days	160 days	n/a	160 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 Duncan Forestry standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Duncan Forestry 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).