Summerside Cda Weather Records (CA008300600)

Record envelope, standing records and threshold days for Summerside Cda (CA008300600), Prince Edward Island, Canada, with 35 years of record.

Key Facts for Summerside Cda

Summerside Cda (CA008300600) is a weather station in Prince Edward Island, Canada at 46.40 latitude and -63.78 longitude, 5 m (16 ft) above sea level.
The station reports from 1929 to 1963, 35 years of record.
1,464 records set at Summerside Cda 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, 46.40 latitude, -63.78 longitude.
Elevation: 5 m (16 ft).
Period of record: 1929 to 1963, 35 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 Summerside Cda. 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 Summerside Cda, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.8 C (55.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Mar	13.9 C (57.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Apr	23.9 C (75.0 F)	-11.7 C (10.9 F)	n/a	n/a
May	28.3 C (82.9 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	30.0 C (86.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	30.6 C (87.1 F)	5.0 C (41.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	30.6 C (87.1 F)	-0.6 C (30.9 F)	n/a	n/a
Oct	26.1 C (79.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-14.4 C (6.1 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-25.6 C (-14.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Summerside Cda still stand. 1930 holds the most, with 78.

Standing records at Summerside Cda by the year they were set
Year set	Standing records
1929	24
1930	78
1931	9
1936	49
1937	51
1938	56
1939	65
1940	53
1941	64
1942	53
1943	52
1944	48
1945	54
1946	54
1947	74
1948	44
1949	47
1950	73
1951	50
1952	37
1953	49
1954	58
1955	30
1956	46
1957	53
1958	35
1959	32
1960	27
1961	47
1962	45
1963	7

Wettest Day of Each Month

Sep: 119.4 mm (4.7 in)

The wettest day on record for each calendar month at Summerside Cda. The most was 119.4 mm (4.7 in) on 22 September 1942.

Record daily precipitation for each month at Summerside Cda
Month	Record daily precipitation (mm)	Date
Jan	48.3 mm (1.9 in)	20 January 1961
Feb	48.3 mm (1.9 in)	8 February 1953
Mar	50.8 mm (2.0 in)	12 March 1949
Apr	73.4 mm (2.9 in)	1 April 1962
May	50.8 mm (2.0 in)	29 May 1951
Jun	45.2 mm (1.8 in)	3 June 1947
Jul	48.3 mm (1.9 in)	1 July 1950
Aug	81.5 mm (3.2 in)	14 August 1948
Sep	119.4 mm (4.7 in)	22 September 1942
Oct	65.3 mm (2.6 in)	26 October 1959
Nov	57.2 mm (2.3 in)	11 November 1944
Dec	47.0 mm (1.9 in)	7 December 1941

Period of Record Coverage

1929 to 1963

31 years of record at Summerside Cda, 1929 to 1963. 5 years have data for under 90 percent of days and are left out of rankings: 1929, 1931, 1936, 1962, 1963.

Days with data per year at Summerside Cda
Year	Days with data	Share of year	Complete
1929	147	40%	No
1930	365	100%	Yes
1931	120	33%	No
1936	240	66%	No
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	364	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	364	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	328	90%	No
1963	72	20%	No

Latest Records

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

Climate Trend

26 complete years, 1930 to 1961

One stripe for each of 26 complete years at Summerside Cda, 1930 to 1961. Blue stripes are years cooler than the station's own mean of 5.6 C (42.1 F); red stripes are warmer. The coolest year was 1941, at 4.4 C (40.0 F), and the warmest was 1953, at 7.0 C (44.7 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Summerside Cda as warming stripes, 1930 to 1961
Year	Annual mean temperature	Difference from the station mean
1930	6.2 C	+0.58 C
1937	5.9 C	+0.32 C
1938	5.4 C	-0.27 C
1939	4.7 C	-0.91 C
1940	4.7 C	-0.95 C
1941	4.4 C	-1.18 C
1942	5.4 C	-0.18 C
1943	4.7 C	-0.94 C
1944	6.0 C	+0.39 C
1945	5.4 C	-0.27 C
1946	5.1 C	-0.52 C
1947	5.6 C	0.00 C
1948	4.9 C	-0.70 C
1949	5.7 C	+0.09 C
1950	5.5 C	-0.15 C
1951	6.5 C	+0.92 C
1952	6.5 C	+0.85 C
1953	7.0 C	+1.42 C
1954	6.2 C	+0.62 C
1955	5.7 C	+0.08 C
1956	5.4 C	-0.18 C
1957	5.7 C	+0.06 C
1958	5.7 C	+0.09 C
1959	5.8 C	+0.14 C
1960	6.5 C	+0.83 C
1961	5.5 C	-0.13 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

1929 to 1963

Yearly extremes at Summerside Cda: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.2 C (90.0 F)	1944	29.4 C (84.9 F)	31
Coldest night (TNn)	-32.2 C (-26.0 F)	1930	-23.3 C (-9.9 F)	31
Wettest day (Rx1day)	119.4 mm (4.7 in)	1942	45.2 mm (1.8 in)	31
Wettest five days (Rx5day)	166.4 mm (6.6 in)	1942	69.9 mm (2.8 in)	31
Longest dry spell (CDD)	26 days	1940	15 days	31

Hottest day (TXx)

The hottest day of the year at Summerside Cda, 1929 to 1963. The record is 32.2 C (90.0 F) in 1944, marked on the chart; the median year is 29.4 C (84.9 F).

Hottest day (TXx) at Summerside Cda by year
Year	Hottest day (TXx)
1929	25.6 C (78.1 F)
1930	30.0 C (86.0 F)
1931	16.1 C (61.0 F)
1936	27.8 C (82.0 F)
1937	31.7 C (89.1 F)
1938	30.0 C (86.0 F)
1939	30.6 C (87.1 F)
1940	29.4 C (84.9 F)
1941	28.9 C (84.0 F)
1942	30.6 C (87.1 F)
1943	29.4 C (84.9 F)
1944	32.2 C (90.0 F)
1945	29.4 C (84.9 F)
1946	29.4 C (84.9 F)
1947	30.6 C (87.1 F)
1948	28.3 C (82.9 F)
1949	30.6 C (87.1 F)
1950	27.2 C (81.0 F)
1951	28.3 C (82.9 F)
1952	31.1 C (88.0 F)
1953	28.9 C (84.0 F)
1954	28.9 C (84.0 F)
1955	30.0 C (86.0 F)
1956	28.3 C (82.9 F)
1957	27.8 C (82.0 F)
1958	27.2 C (81.0 F)
1959	30.0 C (86.0 F)
1960	32.2 C (90.0 F)
1961	29.4 C (84.9 F)
1962	27.2 C (81.0 F)
1963	8.9 C (48.0 F)

Coldest night (TNn)

The coldest night of the year at Summerside Cda, 1929 to 1963. The record is -32.2 C (-26.0 F) in 1930, marked on the chart; the median year is -23.3 C (-9.9 F).

Coldest night (TNn) at Summerside Cda by year
Year	Coldest night (TNn)
1929	-19.4 C (-2.9 F)
1930	-32.2 C (-26.0 F)
1931	-24.4 C (-11.9 F)
1936	-15.0 C (5.0 F)
1937	-23.3 C (-9.9 F)
1938	-28.9 C (-20.0 F)
1939	-21.7 C (-7.1 F)
1940	-23.3 C (-9.9 F)
1941	-22.8 C (-9.0 F)
1942	-25.0 C (-13.0 F)
1943	-26.1 C (-15.0 F)
1944	-21.1 C (-6.0 F)
1945	-22.2 C (-8.0 F)
1946	-26.1 C (-15.0 F)
1947	-22.2 C (-8.0 F)
1948	-27.2 C (-17.0 F)
1949	-22.8 C (-9.0 F)
1950	-26.7 C (-16.1 F)
1951	-26.7 C (-16.1 F)
1952	-21.1 C (-6.0 F)
1953	-20.0 C (-4.0 F)
1954	-23.3 C (-9.9 F)
1955	-23.3 C (-9.9 F)
1956	-21.7 C (-7.1 F)
1957	-27.8 C (-18.0 F)
1958	-20.6 C (-5.1 F)
1959	-23.3 C (-9.9 F)
1960	-23.9 C (-11.0 F)
1961	-26.1 C (-15.0 F)
1962	-26.7 C (-16.1 F)
1963	-21.7 C (-7.1 F)

Wettest day (Rx1day)

The wettest day of the year at Summerside Cda, 1929 to 1963. The record is 119.4 mm (4.7 in) in 1942, marked on the chart; the median year is 45.2 mm (1.8 in).

Wettest day (Rx1day) at Summerside Cda by year
Year	Wettest day (Rx1day)
1929	43.4 mm (1.7 in)
1930	38.1 mm (1.5 in)
1931	30.5 mm (1.2 in)
1936	34.3 mm (1.4 in)
1937	35.6 mm (1.4 in)
1938	44.7 mm (1.8 in)
1939	45.2 mm (1.8 in)
1940	56.1 mm (2.2 in)
1941	69.9 mm (2.8 in)
1942	119.4 mm (4.7 in)
1943	44.5 mm (1.8 in)
1944	57.2 mm (2.3 in)
1945	49.8 mm (2.0 in)
1946	47.0 mm (1.9 in)
1947	45.2 mm (1.8 in)
1948	81.5 mm (3.2 in)
1949	50.8 mm (2.0 in)
1950	48.3 mm (1.9 in)
1951	50.8 mm (2.0 in)
1952	44.5 mm (1.8 in)
1953	49.5 mm (1.9 in)
1954	31.8 mm (1.3 in)
1955	29.7 mm (1.2 in)
1956	48.3 mm (1.9 in)
1957	37.6 mm (1.5 in)
1958	32.5 mm (1.3 in)
1959	65.3 mm (2.6 in)
1960	40.6 mm (1.6 in)
1961	48.3 mm (1.9 in)
1962	73.4 mm (2.9 in)
1963	26.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Summerside Cda, 1929 to 1963. The record is 166.4 mm (6.6 in) in 1942, marked on the chart; the median year is 69.9 mm (2.8 in).

Wettest five days (Rx5day) at Summerside Cda by year
Year	Wettest five days (Rx5day)
1929	62.8 mm (2.5 in)
1930	57.9 mm (2.3 in)
1931	58.4 mm (2.3 in)
1936	70.9 mm (2.8 in)
1937	97.6 mm (3.8 in)
1938	68.3 mm (2.7 in)
1939	77.5 mm (3.1 in)
1940	83.7 mm (3.3 in)
1941	74.9 mm (2.9 in)
1942	166.4 mm (6.6 in)
1943	66.8 mm (2.6 in)
1944	69.9 mm (2.8 in)
1945	62.2 mm (2.4 in)
1946	47.0 mm (1.9 in)
1947	82.7 mm (3.3 in)
1948	89.3 mm (3.5 in)
1949	78.8 mm (3.1 in)
1950	82.8 mm (3.3 in)
1951	70.4 mm (2.8 in)
1952	44.5 mm (1.8 in)
1953	67.0 mm (2.6 in)
1954	56.6 mm (2.2 in)
1955	49.0 mm (1.9 in)
1956	102.2 mm (4.0 in)
1957	72.7 mm (2.9 in)
1958	56.7 mm (2.2 in)
1959	110.7 mm (4.4 in)
1960	56.9 mm (2.2 in)
1961	68.3 mm (2.7 in)
1962	98.0 mm (3.9 in)
1963	49.1 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Summerside Cda, 1929 to 1963. The record is 26 days in 1940, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Summerside Cda by year
Year	Longest dry spell (CDD)
1929	11 days
1930	18 days
1931	14 days
1936	9 days
1937	14 days
1938	13 days
1939	19 days
1940	26 days
1941	15 days
1942	16 days
1943	16 days
1944	22 days
1945	16 days
1946	13 days
1947	25 days
1948	16 days
1949	12 days
1950	24 days
1951	14 days
1952	16 days
1953	15 days
1954	12 days
1955	11 days
1956	15 days
1957	16 days
1958	15 days
1959	19 days
1960	20 days
1961	25 days
1962	10 days
1963	8 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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Summerside Cda falls on 10 May and the median first autumn frost on 16 October, which leaves a median of 155 days between them.

Fitted over all years, the growing season changes by +3.0 days per decade at this station.

Frost dates and growing season at Summerside Cda
Measure	Median, all years	Earliest period	Recent period (1930 to 1961)	Recent against earliest	Fitted trend
Last spring frost	10 May	n/a	10 May	n/a	-1.5 days per decade
First autumn frost	16 October	n/a	16 October	n/a	+1.5 days per decade
Growing days	155 days	n/a	155 days	n/a	+3.0 days per decade

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