Monticello Weather Records (CA008300447)

Record envelope, standing records and threshold days for Monticello (CA008300447), Prince Edward Island, Canada, with 45 years of record.

Key Facts for Monticello

Monticello (CA008300447) is a weather station in Prince Edward Island, Canada at 46.47 latitude and -62.47 longitude, 32 m (105 ft) above sea level.
The station reports from 1959 to 2003, 45 years of record.
1,464 records set at Monticello still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Prince Edward Island, Canada, 46.47 latitude, -62.47 longitude.
Elevation: 32 m (105 ft).
Period of record: 1959 to 2003, 45 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 Monticello. 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 Monticello, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.3 C (55.9 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	13.5 C (56.3 F)	-30.6 C (-23.1 F)	n/a	n/a
Mar	18.9 C (66.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Apr	24.0 C (75.2 F)	-16.1 C (3.0 F)	n/a	n/a
May	30.6 C (87.1 F)	-8.9 C (16.0 F)	n/a	n/a
Jun	31.1 C (88.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jul	33.3 C (91.9 F)	1.7 C (35.1 F)	n/a	n/a
Aug	31.7 C (89.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	31.1 C (88.0 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	24.4 C (75.9 F)	-5.6 C (21.9 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-25.0 C (-13.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Monticello still stand. 1972 holds the most, with 93.

Standing records at Monticello by the year they were set
Year set	Standing records
1960	2
1961	64
1962	73
1963	77
1964	69
1965	65
1966	57
1967	85
1968	53
1969	64
1970	47
1971	64
1972	93
1973	61
1974	57
1975	79
1976	72
1977	55
1978	52
1979	73
1980	54
1981	83
1982	55
1983	10

Wettest Day of Each Month

Aug: 106.4 mm (4.2 in)

The wettest day on record for each calendar month at Monticello. The most was 106.4 mm (4.2 in) on 15 August 1971.

Record daily precipitation for each month at Monticello
Month	Record daily precipitation (mm)	Date
Jan	34.0 mm (1.3 in)	14 January 1978
Feb	39.1 mm (1.5 in)	6 February 1960
Mar	46.2 mm (1.8 in)	5 March 1964
Apr	64.6 mm (2.5 in)	28 April 1982
May	59.2 mm (2.3 in)	26 May 1967
Jun	48.0 mm (1.9 in)	13 June 1968
Jul	56.6 mm (2.2 in)	30 July 1977
Aug	106.4 mm (4.2 in)	15 August 1971
Sep	51.8 mm (2.0 in)	4 September 1970
Oct	59.2 mm (2.3 in)	11 October 1966
Nov	44.7 mm (1.8 in)	5 November 1976
Dec	45.2 mm (1.8 in)	22 December 1975

Period of Record Coverage

1960 to 1983

24 years of record at Monticello, 1960 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1960, 1982, 1983.

Days with data per year at Monticello
Year	Days with data	Share of year	Complete
1960	31	8%	No
1961	364	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	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	363	99%	Yes
1982	304	83%	No
1983	61	17%	No

Latest Records

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

Climate Trend

21 complete years, 1961 to 1981

One stripe for each of 21 complete years at Monticello, 1961 to 1981. Blue stripes are years cooler than the station's own mean of 5.2 C (41.4 F); red stripes are warmer. The coolest year was 1972, at 4.1 C (39.4 F), and the warmest was 1981, at 6.4 C (43.6 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Monticello as warming stripes, 1961 to 1981
Year	Annual mean temperature	Difference from the station mean
1961	5.2 C	0.00 C
1962	4.5 C	-0.77 C
1963	4.9 C	-0.36 C
1964	4.7 C	-0.54 C
1965	4.4 C	-0.89 C
1966	6.1 C	+0.83 C
1967	5.2 C	-0.03 C
1968	5.1 C	-0.12 C
1969	6.3 C	+1.08 C
1970	5.3 C	+0.08 C
1971	5.6 C	+0.38 C
1972	4.1 C	-1.11 C
1973	5.7 C	+0.43 C
1974	4.6 C	-0.64 C
1975	5.2 C	-0.02 C
1976	5.4 C	+0.16 C
1977	5.4 C	+0.18 C
1978	4.8 C	-0.41 C
1979	6.4 C	+1.19 C
1980	4.6 C	-0.62 C
1981	6.4 C	+1.19 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

1959 to 1983

Yearly extremes at Monticello: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.3 C (91.9 F)	1975	30.3 C (86.5 F)	24
Coldest night (TNn)	-30.6 C (-23.1 F)	1973	-25.6 C (-14.1 F)	24
Wettest day (Rx1day)	106.4 mm (4.2 in)	1971	45.2 mm (1.8 in)	25
Wettest five days (Rx5day)	155.9 mm (6.1 in)	1971	69.3 mm (2.7 in)	25
Longest dry spell (CDD)	23 days	1966	14 days	25

Hottest day (TXx)

The hottest day of the year at Monticello, 1959 to 1983. The record is 33.3 C (91.9 F) in 1975, marked on the chart; the median year is 30.3 C (86.5 F).

Hottest day (TXx) at Monticello by year
Year	Hottest day (TXx)
1959	n/a
1960	10.6 C (51.1 F)
1961	29.4 C (84.9 F)
1962	31.1 C (88.0 F)
1963	32.2 C (90.0 F)
1964	28.9 C (84.0 F)
1965	31.1 C (88.0 F)
1966	28.9 C (84.0 F)
1967	31.1 C (88.0 F)
1968	30.0 C (86.0 F)
1969	30.0 C (86.0 F)
1970	32.2 C (90.0 F)
1971	30.6 C (87.1 F)
1972	31.1 C (88.0 F)
1973	28.9 C (84.0 F)
1974	30.0 C (86.0 F)
1975	33.3 C (91.9 F)
1976	31.1 C (88.0 F)
1977	31.7 C (89.1 F)
1978	30.0 C (86.0 F)
1979	30.0 C (86.0 F)
1980	31.0 C (87.8 F)
1981	30.0 C (86.0 F)
1982	32.5 C (90.5 F)
1983	15.0 C (59.0 F)

Coldest night (TNn)

The coldest night of the year at Monticello, 1959 to 1983. The record is -30.6 C (-23.1 F) in 1973, marked on the chart; the median year is -25.6 C (-14.1 F).

Coldest night (TNn) at Monticello by year
Year	Coldest night (TNn)
1959	n/a
1960	-16.1 C (3.0 F)
1961	-24.4 C (-11.9 F)
1962	-26.7 C (-16.1 F)
1963	-27.8 C (-18.0 F)
1964	-26.1 C (-15.0 F)
1965	-26.1 C (-15.0 F)
1966	-25.6 C (-14.1 F)
1967	-26.1 C (-15.0 F)
1968	-25.6 C (-14.1 F)
1969	-18.9 C (-2.0 F)
1970	-23.3 C (-9.9 F)
1971	-24.4 C (-11.9 F)
1972	-28.9 C (-20.0 F)
1973	-30.6 C (-23.1 F)
1974	-27.2 C (-17.0 F)
1975	-26.7 C (-16.1 F)
1976	-25.6 C (-14.1 F)
1977	-22.8 C (-9.0 F)
1978	-25.6 C (-14.1 F)
1979	-21.7 C (-7.1 F)
1980	-25.0 C (-13.0 F)
1981	-30.0 C (-22.0 F)
1982	-30.0 C (-22.0 F)
1983	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at Monticello, 1959 to 1983. The record is 106.4 mm (4.2 in) in 1971, marked on the chart; the median year is 45.2 mm (1.8 in).

Wettest day (Rx1day) at Monticello by year
Year	Wettest day (Rx1day)
1959	42.2 mm (1.7 in)
1960	39.1 mm (1.5 in)
1961	49.5 mm (1.9 in)
1962	41.4 mm (1.6 in)
1963	45.2 mm (1.8 in)
1964	46.7 mm (1.8 in)
1965	33.0 mm (1.3 in)
1966	59.2 mm (2.3 in)
1967	76.5 mm (3.0 in)
1968	48.0 mm (1.9 in)
1969	38.1 mm (1.5 in)
1970	51.8 mm (2.0 in)
1971	106.4 mm (4.2 in)
1972	33.8 mm (1.3 in)
1973	39.1 mm (1.5 in)
1974	36.6 mm (1.4 in)
1975	45.2 mm (1.8 in)
1976	44.7 mm (1.8 in)
1977	56.6 mm (2.2 in)
1978	55.4 mm (2.2 in)
1979	54.8 mm (2.2 in)
1980	51.4 mm (2.0 in)
1981	37.8 mm (1.5 in)
1982	64.6 mm (2.5 in)
1983	30.2 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Monticello, 1959 to 1983. The record is 155.9 mm (6.1 in) in 1971, marked on the chart; the median year is 69.3 mm (2.7 in).

Wettest five days (Rx5day) at Monticello by year
Year	Wettest five days (Rx5day)
1959	59.4 mm (2.3 in)
1960	47.5 mm (1.9 in)
1961	62.7 mm (2.5 in)
1962	80.0 mm (3.1 in)
1963	54.6 mm (2.1 in)
1964	72.1 mm (2.8 in)
1965	54.6 mm (2.1 in)
1966	65.0 mm (2.6 in)
1967	90.8 mm (3.6 in)
1968	81.5 mm (3.2 in)
1969	74.4 mm (2.9 in)
1970	60.7 mm (2.4 in)
1971	155.9 mm (6.1 in)
1972	65.1 mm (2.6 in)
1973	77.9 mm (3.1 in)
1974	93.8 mm (3.7 in)
1975	69.3 mm (2.7 in)
1976	91.0 mm (3.6 in)
1977	68.5 mm (2.7 in)
1978	67.9 mm (2.7 in)
1979	78.6 mm (3.1 in)
1980	61.6 mm (2.4 in)
1981	80.4 mm (3.2 in)
1982	81.3 mm (3.2 in)
1983	62.6 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Monticello, 1959 to 1983. The record is 23 days in 1966, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Monticello by year
Year	Longest dry spell (CDD)
1959	14 days
1960	18 days
1961	18 days
1962	20 days
1963	15 days
1964	16 days
1965	14 days
1966	23 days
1967	13 days
1968	21 days
1969	11 days
1970	11 days
1971	10 days
1972	14 days
1973	11 days
1974	13 days
1975	16 days
1976	12 days
1977	11 days
1978	16 days
1979	11 days
1980	10 days
1981	14 days
1982	11 days
1983	3 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Monticello falls on 10 June and the median first autumn frost on 25 September, which leaves a median of 112 days between them.

Frost dates and growing season at Monticello
Measure	Median, all years	Earliest period	Recent period (1961 to 1981)	Recent against earliest	Fitted trend
Last spring frost	10 June	n/a	10 June	n/a	n/a
First autumn frost	25 September	n/a	25 September	n/a	n/a
Growing days	112 days	n/a	112 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 Monticello standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Monticello 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).