Haileybury Weather Records (CA006073138)

Record envelope, standing records and threshold days for Haileybury (CA006073138), Ontario, Canada, with 85 years of record.

Key Facts for Haileybury

Haileybury (CA006073138) is a weather station in Ontario, Canada at 47.45 latitude and -79.63 longitude, 189 m (620 ft) above sea level.
The station reports from 1893 to 1977, 85 years of record.
1,464 records set at Haileybury still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Haileybury set a daily record high minimum temperature of 8.0 C (46.4 F) on 10 November 1977.

About the Station

Location: Ontario, Canada, 47.45 latitude, -79.63 longitude.
Elevation: 189 m (620 ft).
Period of record: 1893 to 1977, 85 years.
Eligible elements: tmax, tmin, prcp, snow.

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 Haileybury. 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 Haileybury, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	9.4 C (48.9 F)	-41.1 C (-42.0 F)	n/a	n/a
Feb	8.9 C (48.0 F)	-44.4 C (-47.9 F)	n/a	n/a
Mar	24.4 C (75.9 F)	-36.7 C (-34.1 F)	n/a	n/a
Apr	30.6 C (87.1 F)	-23.3 C (-9.9 F)	n/a	n/a
May	33.9 C (93.0 F)	-10.0 C (14.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-7.2 C (19.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	36.1 C (97.0 F)	-1.7 C (28.9 F)	n/a	n/a
Sep	33.3 C (91.9 F)	-6.1 C (21.0 F)	n/a	n/a
Oct	27.8 C (82.0 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-27.2 C (-17.0 F)	n/a	n/a
Dec	13.9 C (57.0 F)	-39.4 C (-38.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Haileybury still stand. 1895 holds the most, with 43.

Standing records at Haileybury by the year they were set
Year set	Standing records
1893	1
1894	41
1895	43
1896	28
1897	27
1898	26
1899	26
1900	28
1901	21
1902	17
1903	26
1904	26
1905	18
1906	26
1907	24
1908	18
1909	18
1910	13
1911	31
1912	10
1913	31
1914	43
1915	22
1916	30
1917	22
1918	28
1919	39
1920	32
1921	33
1922	16
1930	26
1931	24
1932	26
1933	26
1934	21
1935	7
1936	30
1937	10
1938	15
1939	21
1940	20
1941	21
1942	21
1943	25
1944	18
1945	30
1946	27
1947	35
1948	19
1949	16
1950	19
1951	24
1952	13
1969	1
1970	16
1971	28
1972	29
1973	37
1974	25
1975	37
1976	27
1977	6

All-Time Record Progression

5 new records

5 all-time records were set at Haileybury between 28 December 1933 and 21 August 1976. Each dot is a new record.

When Haileybury set new all-time records
Date	Kind	Detail
1933-12-28	Record low maximum temperature	Record low maximum temperature -30.6 C (-23.1 F)
1969-12-11	Record daily snowfall	Record daily snowfall 38.1 cm (15.0 in)
1976-01-22	Record low maximum temperature	Record low maximum temperature -32.2 C (-26.0 F)
1976-01-23	Record low maximum temperature	Record low maximum temperature -33.9 C (-29.0 F)
1976-08-21	Record high minimum temperature	Record high minimum temperature 25.6 C (78.1 F)

Wettest Day of Each Month

Mar: 69.6 mm (2.7 in)

The wettest day on record for each calendar month at Haileybury. The most was 69.6 mm (2.7 in) on 27 March 1917.

Record daily precipitation for each month at Haileybury
Month	Record daily precipitation (mm)	Date
Jan	21.8 mm (0.9 in)	24 January 1938
Feb	36.3 mm (1.4 in)	23 February 1922
Mar	69.6 mm (2.7 in)	27 March 1917
Apr	36.6 mm (1.4 in)	24 April 1904
May	55.9 mm (2.2 in)	2 May 1972
Jun	57.4 mm (2.3 in)	11 June 1911
Jul	54.4 mm (2.1 in)	19 July 1946
Aug	64.8 mm (2.6 in)	18 August 1940
Sep	64.8 mm (2.6 in)	30 September 1921
Oct	40.9 mm (1.6 in)	11 October 1897
Nov	51.8 mm (2.0 in)	18 November 1931
Dec	41.9 mm (1.6 in)	10 December 1971

Period of Record Coverage

1893 to 1977

62 years of record at Haileybury, 1893 to 1977. 5 years have data for under 90 percent of days and are left out of rankings: 1893, 1922, 1930, 1969, 1977.

Days with data per year at Haileybury
Year	Days with data	Share of year	Complete
1893	17	5%	No
1894	335	92%	Yes
1895	364	100%	Yes
1896	366	100%	Yes
1897	363	99%	Yes
1898	365	100%	Yes
1899	365	100%	Yes
1900	365	100%	Yes
1901	365	100%	Yes
1902	365	100%	Yes
1903	365	100%	Yes
1904	366	100%	Yes
1905	365	100%	Yes
1906	365	100%	Yes
1907	365	100%	Yes
1908	366	100%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	364	100%	Yes
1912	366	100%	Yes
1913	365	100%	Yes
1914	364	100%	Yes
1915	364	100%	Yes
1916	366	100%	Yes
1917	365	100%	Yes
1918	365	100%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	334	92%	Yes
1922	212	58%	No
1930	259	71%	No
1931	364	100%	Yes
1932	365	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	364	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	364	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	335	92%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1969	69	19%	No
1970	365	100%	Yes
1971	365	100%	Yes
1972	362	99%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	363	99%	Yes
1976	333	91%	Yes
1977	119	33%	No

Latest Records

Latest records at Haileybury
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 November 1977	Haileybury, CA	daily high min	8.0 C (46.4 F)	1.9 C (3.4 F)	7 years	13 of 100 (Routine)
9 November 1977	Haileybury, CA	daily high min	7.0 C (44.6 F)	0.3 C (0.5 F)	3 years	8 of 100 (Routine)
3 November 1977	Haileybury, CA	daily high min	13.0 C (55.4 F)	0.8 C (1.4 F)	32 years	18 of 100 (Routine)
13 February 1977	Haileybury, CA	daily high min	-2.2 C (28.0 F)	0.6 C (1.1 F)	69 years	28 of 100 (Routine)
12 February 1977	Haileybury, CA	daily rain	11.4 mm (0.4 in)	1.2 mm (0.05 in)	72 years	20 of 100 (Routine)
12 February 1977	Haileybury, CA	daily snowfall	11.4 cm (4.5 in)	1.2 cm (0.5 in)	72 years	31 of 100 (Routine)
3 February 1977	Haileybury, CA	daily high min	-6.7 C (19.9 F)	1.1 C (2.0 F)	38 years	20 of 100 (Routine)
8 January 1977	Haileybury, CA	daily low min	-36.1 C (-33.0 F)	0.5 C (0.9 F)	4 years	9 of 100 (Routine)
19 September 1976	Haileybury, CA	daily high min (Tie)	17.2 C (63.0 F)	tie	32 years	4 of 100 (Routine)
9 September 1976	Haileybury, CA	daily rain	38.1 mm (1.5 in)	23.1 mm (0.9 in)	35 years	45 of 100 (Notable)
2 September 1976	Haileybury, CA	daily low min (Tie)	1.7 C (35.1 F)	tie	2 years	2 of 100 (Routine)
30 August 1976	Haileybury, CA	daily low min (Tie)	1.1 C (34.0 F)	tie	42 years	5 of 100 (Routine)
29 August 1976	Haileybury, CA	daily low max	11.7 C (53.1 F)	1.1 C (2.0 F)	64 years	29 of 100 (Routine)
28 August 1976	Haileybury, CA	daily high min	21.1 C (70.0 F)	1.7 C (3.1 F)	28 years	20 of 100 (Routine)
22 August 1976	Haileybury, CA	daily high min	22.2 C (72.0 F)	1.1 C (2.0 F)	2 years	10 of 100 (Routine)
21 August 1976	Haileybury, CA	all-time high min	25.6 C (78.1 F)	0.6 C (1.1 F)	65 years	48 of 100 (Notable)
21 August 1976	Haileybury, CA	daily high max	32.8 C (91.0 F)	0.6 C (1.1 F)	2 years	9 of 100 (Routine)
12 August 1976	Haileybury, CA	daily high min (Tie)	20.0 C (68.0 F)	tie	2 years	2 of 100 (Routine)
17 July 1976	Haileybury, CA	daily low max	18.3 C (64.9 F)	0.6 C (1.1 F)	44 years	22 of 100 (Routine)
12 July 1976	Haileybury, CA	monthly low max	11.7 C (53.1 F)	0.5 C (0.9 F)	80 years	43 of 100 (Notable)

Climate Trend

51 complete years, 1895 to 1974

One stripe for each of 51 complete years at Haileybury, 1895 to 1974. Blue stripes are years cooler than the station's own mean of 3.3 C (37.9 F); red stripes are warmer. The coolest year was 1917, at 1.0 C (33.8 F), and the warmest was 1931, at 5.2 C (41.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Haileybury as warming stripes, 1895 to 1974
Year	Annual mean temperature	Difference from the station mean
1895	2.7 C	-0.58 C
1896	2.7 C	-0.64 C
1897	3.2 C	-0.06 C
1898	4.1 C	+0.80 C
1899	3.3 C	-0.04 C
1900	3.7 C	+0.42 C
1901	3.5 C	+0.18 C
1902	3.5 C	+0.15 C
1903	3.2 C	-0.09 C
1904	1.6 C	-1.72 C
1905	3.0 C	-0.33 C
1906	3.5 C	+0.21 C
1907	2.0 C	-1.33 C
1908	3.6 C	+0.33 C
1909	3.3 C	+0.02 C
1910	3.8 C	+0.47 C
1911	3.9 C	+0.62 C
1912	2.6 C	-0.75 C
1913	3.7 C	+0.43 C
1914	2.8 C	-0.53 C
1915	4.3 C	+0.95 C
1916	2.8 C	-0.54 C
1917	1.0 C	-2.29 C
1918	2.6 C	-0.66 C
1919	3.7 C	+0.43 C
1920	3.6 C	+0.26 C
1931	5.2 C	+1.87 C
1932	3.7 C	+0.37 C
1933	2.8 C	-0.50 C
1934	2.2 C	-1.15 C
1935	2.4 C	-0.94 C
1936	2.1 C	-1.22 C
1937	4.1 C	+0.76 C
1938	3.9 C	+0.60 C
1939	2.9 C	-0.40 C
1940	2.8 C	-0.55 C
1941	3.7 C	+0.35 C
1942	4.1 C	+0.83 C
1943	2.7 C	-0.63 C
1944	4.3 C	+1.01 C
1945	3.7 C	+0.41 C
1946	3.8 C	+0.45 C
1947	3.7 C	+0.37 C
1948	3.9 C	+0.63 C
1949	4.0 C	+0.74 C
1951	3.4 C	+0.07 C
1952	4.2 C	+0.90 C
1971	3.9 C	+0.56 C
1972	1.9 C	-1.40 C
1973	4.4 C	+1.12 C
1974	3.4 C	+0.05 C

The fitted trend in annual mean temperature here over 1895 to 1974 is 0.07 C (-0.03 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Haileybury
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.07 C (-0.03 to 0.17) per decade	0.1 F (-0.1 to 0.3) per decade	1895 to 1974	51	Not clearly different from zero
Mean daily maximum	-0.03 C (-0.14 to 0.08) per decade	-0.1 F (-0.2 to 0.1) per decade	1895 to 1974	51	Not clearly different from zero
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.3 F (0.1 to 0.5) per decade	1895 to 1974	51	Rise

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

1893 to 1977

Yearly extremes at Haileybury: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1911	32.8 C (91.0 F)	62
Coldest night (TNn)	-44.4 C (-47.9 F)	1914	-37.2 C (-35.0 F)	62
Wettest day (Rx1day)	69.6 mm (2.7 in)	1917	40.6 mm (1.6 in)	62
Wettest five days (Rx5day)	139.5 mm (5.5 in)	1940	60.9 mm (2.4 in)	62
Longest dry spell (CDD)	39 days	1918	15 days	62

Hottest day (TXx)

The hottest day of the year at Haileybury, 1893 to 1977. The record is 38.9 C (102.0 F) in 1911, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Haileybury by year
Year	Hottest day (TXx)
1893	3.3 C (37.9 F)
1894	33.9 C (93.0 F)
1895	32.8 C (91.0 F)
1896	33.9 C (93.0 F)
1897	35.6 C (96.1 F)
1898	32.2 C (90.0 F)
1899	32.2 C (90.0 F)
1900	32.2 C (90.0 F)
1901	37.8 C (100.0 F)
1902	30.0 C (86.0 F)
1903	35.0 C (95.0 F)
1904	31.1 C (88.0 F)
1905	30.6 C (87.1 F)
1906	32.8 C (91.0 F)
1907	36.1 C (97.0 F)
1908	31.7 C (89.1 F)
1909	33.9 C (93.0 F)
1910	32.2 C (90.0 F)
1911	38.9 C (102.0 F)
1912	33.3 C (91.9 F)
1913	37.2 C (99.0 F)
1914	34.4 C (93.9 F)
1915	31.1 C (88.0 F)
1916	37.8 C (100.0 F)
1917	32.8 C (91.0 F)
1918	33.9 C (93.0 F)
1919	36.1 C (97.0 F)
1920	32.2 C (90.0 F)
1921	38.9 C (102.0 F)
1922	34.4 C (93.9 F)
1930	30.0 C (86.0 F)
1931	35.6 C (96.1 F)
1932	31.7 C (89.1 F)
1933	33.3 C (91.9 F)
1934	33.9 C (93.0 F)
1935	33.9 C (93.0 F)
1936	38.3 C (100.9 F)
1937	35.6 C (96.1 F)
1938	32.8 C (91.0 F)
1939	33.3 C (91.9 F)
1940	32.8 C (91.0 F)
1941	32.8 C (91.0 F)
1942	36.1 C (97.0 F)
1943	32.2 C (90.0 F)
1944	35.0 C (95.0 F)
1945	35.6 C (96.1 F)
1946	32.2 C (90.0 F)
1947	36.1 C (97.0 F)
1948	35.6 C (96.1 F)
1949	35.6 C (96.1 F)
1950	31.7 C (89.1 F)
1951	30.0 C (86.0 F)
1952	32.2 C (90.0 F)
1969	10.0 C (50.0 F)
1970	31.7 C (89.1 F)
1971	32.2 C (90.0 F)
1972	30.6 C (87.1 F)
1973	32.2 C (90.0 F)
1974	32.2 C (90.0 F)
1975	36.1 C (97.0 F)
1976	32.8 C (91.0 F)
1977	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Haileybury, 1893 to 1977. The record is -44.4 C (-47.9 F) in 1914, marked on the chart; the median year is -37.2 C (-35.0 F).

Coldest night (TNn) at Haileybury by year
Year	Coldest night (TNn)
1893	-37.2 C (-35.0 F)
1894	-33.9 C (-29.0 F)
1895	-35.0 C (-31.0 F)
1896	-40.0 C (-40.0 F)
1897	-36.7 C (-34.1 F)
1898	-37.8 C (-36.0 F)
1899	-38.9 C (-38.0 F)
1900	-36.7 C (-34.1 F)
1901	-34.4 C (-29.9 F)
1902	-35.0 C (-31.0 F)
1903	-38.9 C (-38.0 F)
1904	-37.2 C (-35.0 F)
1905	-37.2 C (-35.0 F)
1906	-37.2 C (-35.0 F)
1907	-36.7 C (-34.1 F)
1908	-37.2 C (-35.0 F)
1909	-36.1 C (-33.0 F)
1910	-32.8 C (-27.0 F)
1911	-35.6 C (-32.1 F)
1912	-40.0 C (-40.0 F)
1913	-33.3 C (-27.9 F)
1914	-44.4 C (-47.9 F)
1915	-31.7 C (-25.1 F)
1916	-35.6 C (-32.1 F)
1917	-38.9 C (-38.0 F)
1918	-37.2 C (-35.0 F)
1919	-35.6 C (-32.1 F)
1920	-38.9 C (-38.0 F)
1921	-32.8 C (-27.0 F)
1922	-35.6 C (-32.1 F)
1930	-27.8 C (-18.0 F)
1931	-34.4 C (-29.9 F)
1932	-30.6 C (-23.1 F)
1933	-39.4 C (-38.9 F)
1934	-38.3 C (-36.9 F)
1935	-38.3 C (-36.9 F)
1936	-32.8 C (-27.0 F)
1937	-33.9 C (-29.0 F)
1938	-35.6 C (-32.1 F)
1939	-33.9 C (-29.0 F)
1940	-31.7 C (-25.1 F)
1941	-34.4 C (-29.9 F)
1942	-39.4 C (-38.9 F)
1943	-37.8 C (-36.0 F)
1944	-31.7 C (-25.1 F)
1945	-37.8 C (-36.0 F)
1946	-37.8 C (-36.0 F)
1947	-35.6 C (-32.1 F)
1948	-37.2 C (-35.0 F)
1949	-31.1 C (-24.0 F)
1950	-37.2 C (-35.0 F)
1951	-39.4 C (-38.9 F)
1952	-37.2 C (-35.0 F)
1969	-31.7 C (-25.1 F)
1970	-38.3 C (-36.9 F)
1971	-40.6 C (-41.1 F)
1972	-37.2 C (-35.0 F)
1973	-41.1 C (-42.0 F)
1974	-37.8 C (-36.0 F)
1975	-37.2 C (-35.0 F)
1976	-37.2 C (-35.0 F)
1977	-36.1 C (-33.0 F)

Wettest day (Rx1day)

The wettest day of the year at Haileybury, 1893 to 1977. The record is 69.6 mm (2.7 in) in 1917, marked on the chart; the median year is 40.6 mm (1.6 in).

Wettest day (Rx1day) at Haileybury by year
Year	Wettest day (Rx1day)
1893	14.0 mm (0.6 in)
1894	40.6 mm (1.6 in)
1895	24.6 mm (1.0 in)
1896	60.2 mm (2.4 in)
1897	40.9 mm (1.6 in)
1898	45.2 mm (1.8 in)
1899	46.7 mm (1.8 in)
1900	55.4 mm (2.2 in)
1901	42.2 mm (1.7 in)
1902	29.7 mm (1.2 in)
1903	31.8 mm (1.3 in)
1904	51.8 mm (2.0 in)
1905	45.2 mm (1.8 in)
1906	31.5 mm (1.2 in)
1907	41.4 mm (1.6 in)
1908	38.6 mm (1.5 in)
1909	27.2 mm (1.1 in)
1910	44.5 mm (1.8 in)
1911	57.4 mm (2.3 in)
1912	36.3 mm (1.4 in)
1913	33.0 mm (1.3 in)
1914	42.7 mm (1.7 in)
1915	27.2 mm (1.1 in)
1916	40.4 mm (1.6 in)
1917	69.6 mm (2.7 in)
1918	46.0 mm (1.8 in)
1919	32.0 mm (1.3 in)
1920	40.6 mm (1.6 in)
1921	64.8 mm (2.6 in)
1922	36.3 mm (1.4 in)
1930	56.4 mm (2.2 in)
1931	51.8 mm (2.0 in)
1932	40.6 mm (1.6 in)
1933	35.1 mm (1.4 in)
1934	34.0 mm (1.3 in)
1935	34.5 mm (1.4 in)
1936	33.0 mm (1.3 in)
1937	63.8 mm (2.5 in)
1938	30.5 mm (1.2 in)
1939	38.9 mm (1.5 in)
1940	64.8 mm (2.6 in)
1941	52.6 mm (2.1 in)
1942	44.5 mm (1.8 in)
1943	22.4 mm (0.9 in)
1944	21.1 mm (0.8 in)
1945	47.2 mm (1.9 in)
1946	54.4 mm (2.1 in)
1947	50.5 mm (2.0 in)
1948	30.5 mm (1.2 in)
1949	25.4 mm (1.0 in)
1950	25.4 mm (1.0 in)
1951	60.5 mm (2.4 in)
1952	46.2 mm (1.8 in)
1969	38.1 mm (1.5 in)
1970	44.7 mm (1.8 in)
1971	43.9 mm (1.7 in)
1972	55.9 mm (2.2 in)
1973	35.1 mm (1.4 in)
1974	57.2 mm (2.3 in)
1975	33.0 mm (1.3 in)
1976	38.1 mm (1.5 in)
1977	21.1 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Haileybury, 1893 to 1977. The record is 139.5 mm (5.5 in) in 1940, marked on the chart; the median year is 60.9 mm (2.4 in).

Wettest five days (Rx5day) at Haileybury by year
Year	Wettest five days (Rx5day)
1893	27.1 mm (1.1 in)
1894	59.4 mm (2.3 in)
1895	62.5 mm (2.5 in)
1896	67.4 mm (2.7 in)
1897	83.6 mm (3.3 in)
1898	114.2 mm (4.5 in)
1899	53.5 mm (2.1 in)
1900	84.1 mm (3.3 in)
1901	72.0 mm (2.8 in)
1902	50.5 mm (2.0 in)
1903	60.0 mm (2.4 in)
1904	56.9 mm (2.2 in)
1905	72.8 mm (2.9 in)
1906	49.6 mm (2.0 in)
1907	58.0 mm (2.3 in)
1908	53.2 mm (2.1 in)
1909	60.2 mm (2.4 in)
1910	48.4 mm (1.9 in)
1911	71.1 mm (2.8 in)
1912	67.2 mm (2.6 in)
1913	64.8 mm (2.6 in)
1914	51.1 mm (2.0 in)
1915	67.9 mm (2.7 in)
1916	47.2 mm (1.9 in)
1917	92.2 mm (3.6 in)
1918	54.5 mm (2.1 in)
1919	76.7 mm (3.0 in)
1920	40.6 mm (1.6 in)
1921	75.0 mm (3.0 in)
1922	44.2 mm (1.7 in)
1930	135.2 mm (5.3 in)
1931	64.7 mm (2.5 in)
1932	90.1 mm (3.5 in)
1933	63.8 mm (2.5 in)
1934	50.9 mm (2.0 in)
1935	49.3 mm (1.9 in)
1936	48.6 mm (1.9 in)
1937	100.3 mm (3.9 in)
1938	54.6 mm (2.1 in)
1939	59.2 mm (2.3 in)
1940	139.5 mm (5.5 in)
1941	56.9 mm (2.2 in)
1942	90.6 mm (3.6 in)
1943	47.0 mm (1.9 in)
1944	39.3 mm (1.5 in)
1945	102.6 mm (4.0 in)
1946	64.6 mm (2.5 in)
1947	71.1 mm (2.8 in)
1948	62.7 mm (2.5 in)
1949	56.7 mm (2.2 in)
1950	51.1 mm (2.0 in)
1951	61.5 mm (2.4 in)
1952	79.8 mm (3.1 in)
1969	54.4 mm (2.1 in)
1970	86.7 mm (3.4 in)
1971	56.1 mm (2.2 in)
1972	86.4 mm (3.4 in)
1973	49.8 mm (2.0 in)
1974	85.5 mm (3.4 in)
1975	49.5 mm (1.9 in)
1976	63.5 mm (2.5 in)
1977	34.6 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Haileybury, 1893 to 1977. The record is 39 days in 1918, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Haileybury by year
Year	Longest dry spell (CDD)
1893	6 days
1894	15 days
1895	20 days
1896	17 days
1897	15 days
1898	14 days
1899	24 days
1900	12 days
1901	14 days
1902	13 days
1903	18 days
1904	22 days
1905	10 days
1906	14 days
1907	18 days
1908	13 days
1909	14 days
1910	15 days
1911	14 days
1912	11 days
1913	15 days
1914	23 days
1915	22 days
1916	13 days
1917	21 days
1918	39 days
1919	13 days
1920	24 days
1921	12 days
1922	13 days
1930	11 days
1931	16 days
1932	12 days
1933	15 days
1934	10 days
1935	21 days
1936	11 days
1937	11 days
1938	11 days
1939	20 days
1940	16 days
1941	19 days
1942	15 days
1943	13 days
1944	15 days
1945	12 days
1946	13 days
1947	17 days
1948	15 days
1949	13 days
1950	15 days
1951	13 days
1952	19 days
1969	10 days
1970	11 days
1971	13 days
1972	17 days
1973	12 days
1974	16 days
1975	16 days
1976	20 days
1977	14 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

51 years with a frost

Across 51 years with a frost, the median last spring frost at Haileybury falls on 21 May and the median first autumn frost on 25 September, which leaves a median of 124 days between them.

Fitted over all years, the growing season changes by 0.0 days per decade at this station.

Frost dates and growing season at Haileybury
Measure	Median, all years	Earliest period	Recent period (1916 to 1974)	Recent against earliest	Fitted trend
Last spring frost	21 May	n/a	19 May	n/a	-0.1 days per decade
First autumn frost	25 September	n/a	24 September	n/a	-0.1 days per decade
Growing days	124 days	n/a	127 days	n/a	0.0 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.

Rainfall Return Levels

57 years, 1894 to 1976

A day with at least 41.1 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 74.3 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Haileybury: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.1 mm (1.6 in)
5 years	52.0 mm (2.0 in)
10 years	58.3 mm (2.3 in)
25 years	65.4 mm (2.6 in)
50 years	70.1 mm (2.8 in)
100 years	74.3 mm (2.9 in)	Longer than the 57 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 57 years of values from 1894 to 1976.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 69.6 mm (2.7 in) in 1917; 64.8 mm (2.6 in) in 1921; 64.8 mm (2.6 in) in 1940.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Haileybury standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Haileybury 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).