Newmarket Weather Records (CA006155616)

Record envelope, standing records and threshold days for Newmarket (CA006155616), Ontario, Canada, with 97 years of record.

Key Facts for Newmarket

Newmarket (CA006155616) is a weather station in Ontario, Canada at 44.07 latitude and -79.43 longitude, 282 m (925 ft) above sea level.
The station reports from 1871 to 1967, 97 years of record.
1,464 records set at Newmarket 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, 44.07 latitude, -79.43 longitude.
Elevation: 282 m (925 ft).
Period of record: 1871 to 1967, 97 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 Newmarket. 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 Newmarket, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.7 C (53.1 F)	-29.4 C (-20.9 F)	n/a	n/a
Feb	9.4 C (48.9 F)	-33.3 C (-27.9 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-28.3 C (-18.9 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-18.3 C (-0.9 F)	n/a	n/a
May	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	35.6 C (96.1 F)	2.8 C (37.0 F)	n/a	n/a
Aug	36.1 C (97.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	28.3 C (82.9 F)	-9.4 C (15.1 F)	n/a	n/a
Nov	18.3 C (64.9 F)	-24.4 C (-11.9 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-28.9 C (-20.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Newmarket still stand. 1876 holds the most, with 154.

Wettest Day of Each Month

Sep: 114.6 mm (4.5 in)

The wettest day on record for each calendar month at Newmarket. The most was 114.6 mm (4.5 in) on 13 September 1878.

Record daily precipitation for each month at Newmarket
Month	Record daily precipitation (mm)	Date
Jan	40.6 mm (1.6 in)	15 January 1877
Feb	30.7 mm (1.2 in)	9 February 1965
Mar	53.3 mm (2.1 in)	27 March 1876
Apr	33.5 mm (1.3 in)	19 April 1877
May	34.0 mm (1.3 in)	8 May 1960
Jun	73.4 mm (2.9 in)	12 June 1967
Jul	58.9 mm (2.3 in)	4 July 1878
Aug	75.4 mm (3.0 in)	9 August 1966
Sep	114.6 mm (4.5 in)	13 September 1878
Oct	39.6 mm (1.6 in)	23 October 1876
Nov	53.3 mm (2.1 in)	8 November 1877
Dec	32.3 mm (1.3 in)	27 December 1959

Period of Record Coverage

1875 to 1967

17 years of record at Newmarket, 1875 to 1967. 6 years have data for under 90 percent of days and are left out of rankings: 1875, 1877, 1879, 1956, 1960, 1961.

Days with data per year at Newmarket
Year	Days with data	Share of year	Complete
1875	278	76%	No
1876	366	100%	Yes
1877	314	86%	No
1878	365	100%	Yes
1879	254	70%	No
1956	29	8%	No
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	182	50%	No
1961	47	13%	No
1962	363	99%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	334	92%	Yes

Latest Records

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

Climate Trend

10 complete years, 1876 to 1966

One stripe for each of 10 complete years at Newmarket, 1876 to 1966. Blue stripes are years cooler than the station's own mean of 6.3 C (43.3 F); red stripes are warmer. The coolest year was 1876, at 5.3 C (41.5 F), and the warmest was 1957, at 6.9 C (44.4 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Newmarket as warming stripes, 1876 to 1966
Year	Annual mean temperature	Difference from the station mean
1876	5.3 C	-1.00 C
1878	6.7 C	+0.40 C
1957	6.9 C	+0.61 C
1958	6.1 C	-0.22 C
1959	6.7 C	+0.44 C
1962	6.4 C	+0.10 C
1963	6.0 C	-0.33 C
1964	6.7 C	+0.42 C
1965	5.8 C	-0.52 C
1966	6.4 C	+0.14 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

1871 to 1967

Yearly extremes at Newmarket: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.1 C (97.0 F)	1876	33.3 C (91.9 F)	17
Coldest night (TNn)	-33.3 C (-27.9 F)	1879	-28.3 C (-18.9 F)	17
Wettest day (Rx1day)	114.6 mm (4.5 in)	1878	37.3 mm (1.5 in)	21
Wettest five days (Rx5day)	137.4 mm (5.4 in)	1967	60.9 mm (2.4 in)	21
Longest dry spell (CDD)	28 days	1876	18 days	21

Hottest day (TXx)

The hottest day of the year at Newmarket, 1871 to 1967. The record is 36.1 C (97.0 F) in 1876, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Newmarket by year
Year	Hottest day (TXx)
1871	n/a
1872	n/a
1873	n/a
1875	33.3 C (91.9 F)
1876	36.1 C (97.0 F)
1877	32.8 C (91.0 F)
1878	34.4 C (93.9 F)
1879	30.6 C (87.1 F)
1882	n/a
1956	10.6 C (51.1 F)
1957	32.2 C (90.0 F)
1958	32.8 C (91.0 F)
1959	33.9 C (93.0 F)
1960	27.8 C (82.0 F)
1961	12.2 C (54.0 F)
1962	33.3 C (91.9 F)
1963	33.9 C (93.0 F)
1964	33.9 C (93.0 F)
1965	33.9 C (93.0 F)
1966	34.4 C (93.9 F)
1967	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Newmarket, 1871 to 1967. The record is -33.3 C (-27.9 F) in 1879, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Newmarket by year
Year	Coldest night (TNn)
1871	n/a
1872	n/a
1873	n/a
1875	-28.9 C (-20.0 F)
1876	-28.9 C (-20.0 F)
1877	-29.4 C (-20.9 F)
1878	-29.4 C (-20.9 F)
1879	-33.3 C (-27.9 F)
1882	n/a
1956	-22.2 C (-8.0 F)
1957	-27.2 C (-17.0 F)
1958	-28.3 C (-18.9 F)
1959	-28.9 C (-20.0 F)
1960	-23.3 C (-9.9 F)
1961	-18.3 C (-0.9 F)
1962	-29.4 C (-20.9 F)
1963	-26.7 C (-16.1 F)
1964	-26.7 C (-16.1 F)
1965	-27.2 C (-17.0 F)
1966	-27.8 C (-18.0 F)
1967	-30.0 C (-22.0 F)

Wettest day (Rx1day)

The wettest day of the year at Newmarket, 1871 to 1967. The record is 114.6 mm (4.5 in) in 1878, marked on the chart; the median year is 37.3 mm (1.5 in).

Wettest day (Rx1day) at Newmarket by year
Year	Wettest day (Rx1day)
1871	30.5 mm (1.2 in)
1872	57.9 mm (2.3 in)
1873	20.1 mm (0.8 in)
1875	46.5 mm (1.8 in)
1876	53.3 mm (2.1 in)
1877	53.3 mm (2.1 in)
1878	114.6 mm (4.5 in)
1879	27.9 mm (1.1 in)
1882	37.3 mm (1.5 in)
1956	35.6 mm (1.4 in)
1957	49.0 mm (1.9 in)
1958	27.9 mm (1.1 in)
1959	32.3 mm (1.3 in)
1960	34.0 mm (1.3 in)
1961	22.1 mm (0.9 in)
1962	47.0 mm (1.9 in)
1963	27.2 mm (1.1 in)
1964	42.4 mm (1.7 in)
1965	32.0 mm (1.3 in)
1966	75.4 mm (3.0 in)
1967	73.4 mm (2.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Newmarket, 1871 to 1967. The record is 137.4 mm (5.4 in) in 1967, marked on the chart; the median year is 60.9 mm (2.4 in).

Wettest five days (Rx5day) at Newmarket by year
Year	Wettest five days (Rx5day)
1871	45.7 mm (1.8 in)
1872	64.8 mm (2.6 in)
1873	31.2 mm (1.2 in)
1875	76.5 mm (3.0 in)
1876	59.7 mm (2.4 in)
1877	59.4 mm (2.3 in)
1878	129.0 mm (5.1 in)
1879	41.9 mm (1.6 in)
1882	82.0 mm (3.2 in)
1956	60.9 mm (2.4 in)
1957	88.1 mm (3.5 in)
1958	47.4 mm (1.9 in)
1959	53.2 mm (2.1 in)
1960	109.4 mm (4.3 in)
1961	22.8 mm (0.9 in)
1962	94.0 mm (3.7 in)
1963	50.8 mm (2.0 in)
1964	61.6 mm (2.4 in)
1965	60.4 mm (2.4 in)
1966	90.9 mm (3.6 in)
1967	137.4 mm (5.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Newmarket, 1871 to 1967. The record is 28 days in 1876, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Newmarket by year
Year	Longest dry spell (CDD)
1871	24 days
1872	19 days
1873	15 days
1875	15 days
1876	28 days
1877	23 days
1878	22 days
1879	22 days
1882	14 days
1956	13 days
1957	23 days
1958	18 days
1959	15 days
1960	11 days
1961	9 days
1962	23 days
1963	28 days
1964	12 days
1965	13 days
1966	18 days
1967	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 Newmarket standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Newmarket 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).