Peterborough Stp Weather Records (CA006166450)

Record envelope, standing records and threshold days for Peterborough Stp (CA006166450), Ontario, Canada, with 30 years of record.

Key Facts for Peterborough Stp

Peterborough Stp (CA006166450) is a weather station in Ontario, Canada at 44.28 latitude and -78.32 longitude, 192 m (630 ft) above sea level.
The station reports from 1964 to 1993, 30 years of record.
1,464 records set at Peterborough Stp 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, 44.28 latitude, -78.32 longitude.
Elevation: 192 m (630 ft).
Period of record: 1964 to 1993, 30 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 Peterborough Stp. 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 Peterborough Stp, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	12.0 C (53.6 F)	-33.5 C (-28.3 F)	n/a	n/a
Mar	24.4 C (75.9 F)	-23.0 C (-9.4 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-14.4 C (6.1 F)	n/a	n/a
May	31.1 C (88.0 F)	-1.7 C (28.9 F)	n/a	n/a
Jun	32.2 C (90.0 F)	1.7 C (35.1 F)	n/a	n/a
Jul	34.4 C (93.9 F)	7.2 C (45.0 F)	n/a	n/a
Aug	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Sep	32.8 C (91.0 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	28.3 C (82.9 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	21.7 C (71.1 F)	-16.7 C (1.9 F)	n/a	n/a
Dec	18.5 C (65.3 F)	-30.0 C (-22.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Peterborough Stp still stand. 1976 holds the most, with 136.

Wettest Day of Each Month

Jul: 79.2 mm (3.1 in)

The wettest day on record for each calendar month at Peterborough Stp. The most was 79.2 mm (3.1 in) on 20 July 1980.

Record daily precipitation for each month at Peterborough Stp
Month	Record daily precipitation (mm)	Date
Jan	33.4 mm (1.3 in)	24 January 1979
Feb	57.6 mm (2.3 in)	10 February 1981
Mar	54.6 mm (2.1 in)	21 March 1980
Apr	35.8 mm (1.4 in)	1 April 1973
May	37.3 mm (1.5 in)	18 May 1969
Jun	64.0 mm (2.5 in)	21 June 1972
Jul	79.2 mm (3.1 in)	20 July 1980
Aug	57.2 mm (2.3 in)	16 August 1977
Sep	61.2 mm (2.4 in)	28 September 1967
Oct	39.4 mm (1.6 in)	25 October 1980
Nov	30.2 mm (1.2 in)	16 November 1981
Dec	43.4 mm (1.7 in)	12 December 1972

Period of Record Coverage

1970 to 1983

14 years of record at Peterborough Stp, 1970 to 1983. Every year has data for at least 90 percent of its days.

Days with data per year at Peterborough Stp
Year	Days with data	Share of year	Complete
1970	334	92%	Yes
1971	334	92%	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	364	100%	Yes
1983	362	99%	Yes

Latest Records

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

Climate Trend

12 complete years, 1972 to 1983

One stripe for each of 12 complete years at Peterborough Stp, 1972 to 1983. Blue stripes are years cooler than the station's own mean of 6.7 C (44.0 F); red stripes are warmer. The coolest year was 1972, at 5.6 C (42.0 F), and the warmest was 1973, at 7.5 C (45.5 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Peterborough Stp as warming stripes, 1972 to 1983
Year	Annual mean temperature	Difference from the station mean
1972	5.6 C	-1.13 C
1973	7.5 C	+0.83 C
1974	6.4 C	-0.31 C
1975	7.4 C	+0.71 C
1976	6.0 C	-0.70 C
1977	7.0 C	+0.36 C
1978	6.1 C	-0.57 C
1979	6.9 C	+0.25 C
1980	6.3 C	-0.41 C
1981	7.0 C	+0.29 C
1982	6.6 C	-0.08 C
1983	7.4 C	+0.72 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

1964 to 1983

Yearly extremes at Peterborough Stp: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1977	32.0 C (89.6 F)	14
Coldest night (TNn)	-33.5 C (-28.3 F)	1979	-28.6 C (-19.5 F)	14
Wettest day (Rx1day)	79.2 mm (3.1 in)	1980	44.8 mm (1.8 in)	20
Wettest five days (Rx5day)	120.5 mm (4.7 in)	1983	66.0 mm (2.6 in)	20
Longest dry spell (CDD)	27 days	1969	16 days	20

Hottest day (TXx)

The hottest day of the year at Peterborough Stp, 1964 to 1983. The record is 34.4 C (93.9 F) in 1977, marked on the chart; the median year is 32.0 C (89.6 F).

Hottest day (TXx) at Peterborough Stp by year
Year	Hottest day (TXx)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	31.1 C (88.0 F)
1971	32.2 C (90.0 F)
1972	31.1 C (88.0 F)
1973	32.8 C (91.0 F)
1974	32.2 C (90.0 F)
1975	33.9 C (93.0 F)
1976	31.1 C (88.0 F)
1977	34.4 C (93.9 F)
1978	32.5 C (90.5 F)
1979	31.0 C (87.8 F)
1980	30.5 C (86.9 F)
1981	31.0 C (87.8 F)
1982	32.0 C (89.6 F)
1983	32.0 C (89.6 F)

Coldest night (TNn)

The coldest night of the year at Peterborough Stp, 1964 to 1983. The record is -33.5 C (-28.3 F) in 1979, marked on the chart; the median year is -28.6 C (-19.5 F).

Coldest night (TNn) at Peterborough Stp by year
Year	Coldest night (TNn)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	-28.9 C (-20.0 F)
1971	-31.1 C (-24.0 F)
1972	-27.2 C (-17.0 F)
1973	-25.6 C (-14.1 F)
1974	-23.3 C (-9.9 F)
1975	-25.6 C (-14.1 F)
1976	-32.2 C (-26.0 F)
1977	-28.3 C (-18.9 F)
1978	-26.1 C (-15.0 F)
1979	-33.5 C (-28.3 F)
1980	-30.0 C (-22.0 F)
1981	-32.0 C (-25.6 F)
1982	-32.0 C (-25.6 F)
1983	-25.0 C (-13.0 F)

Wettest day (Rx1day)

The wettest day of the year at Peterborough Stp, 1964 to 1983. The record is 79.2 mm (3.1 in) in 1980, marked on the chart; the median year is 44.8 mm (1.8 in).

Wettest day (Rx1day) at Peterborough Stp by year
Year	Wettest day (Rx1day)
1964	27.2 mm (1.1 in)
1965	47.8 mm (1.9 in)
1966	38.6 mm (1.5 in)
1967	61.2 mm (2.4 in)
1968	29.5 mm (1.2 in)
1969	59.2 mm (2.3 in)
1970	26.4 mm (1.0 in)
1971	26.2 mm (1.0 in)
1972	64.0 mm (2.5 in)
1973	46.5 mm (1.8 in)
1974	46.5 mm (1.8 in)
1975	57.9 mm (2.3 in)
1976	30.0 mm (1.2 in)
1977	57.2 mm (2.3 in)
1978	28.0 mm (1.1 in)
1979	37.0 mm (1.5 in)
1980	79.2 mm (3.1 in)
1981	57.6 mm (2.3 in)
1982	43.0 mm (1.7 in)
1983	42.1 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Peterborough Stp, 1964 to 1983. The record is 120.5 mm (4.7 in) in 1983, marked on the chart; the median year is 66.0 mm (2.6 in).

Wettest five days (Rx5day) at Peterborough Stp by year
Year	Wettest five days (Rx5day)
1964	35.1 mm (1.4 in)
1965	70.6 mm (2.8 in)
1966	54.6 mm (2.1 in)
1967	81.6 mm (3.2 in)
1968	52.5 mm (2.1 in)
1969	68.1 mm (2.7 in)
1970	40.1 mm (1.6 in)
1971	41.3 mm (1.6 in)
1972	96.9 mm (3.8 in)
1973	74.9 mm (2.9 in)
1974	63.1 mm (2.5 in)
1975	74.2 mm (2.9 in)
1976	51.0 mm (2.0 in)
1977	63.9 mm (2.5 in)
1978	57.5 mm (2.3 in)
1979	62.5 mm (2.5 in)
1980	95.2 mm (3.7 in)
1981	72.6 mm (2.9 in)
1982	74.4 mm (2.9 in)
1983	120.5 mm (4.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Peterborough Stp, 1964 to 1983. The record is 27 days in 1969, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Peterborough Stp by year
Year	Longest dry spell (CDD)
1964	7 days
1965	14 days
1966	14 days
1967	21 days
1968	20 days
1969	27 days
1970	16 days
1971	17 days
1972	15 days
1973	21 days
1974	14 days
1975	14 days
1976	13 days
1977	21 days
1978	15 days
1979	17 days
1980	14 days
1981	16 days
1982	17 days
1983	20 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.

Download the Data

Data for Peterborough Stp standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Peterborough Stp 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).