Houlton Weather Records (USC00173897)

Record envelope, standing records and threshold days for Houlton (USC00173897), Maine, United States, with 93 years of record.

Key Facts for Houlton

Houlton (USC00173897) is a weather station in Maine, United States at 46.13 latitude and -67.83 longitude, 125 m (410 ft) above sea level.
The station reports from 1893 to 1985, 93 years of record.
1,464 records set at Houlton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Houlton set a daily record low minimum temperature of -7.8 C (18.0 F) on 18 April 1985.

About the Station

Location: Maine, United States, 46.13 latitude, -67.83 longitude.
Elevation: 125 m (410 ft).
Period of record: 1893 to 1985, 93 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

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 Houlton. 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 Houlton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.7 C (62.1 F)	-41.7 C (-43.1 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-38.3 C (-36.9 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-33.3 C (-27.9 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-18.9 C (-2.0 F)	n/a	n/a
May	34.4 C (93.9 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Jul	38.9 C (102.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	-0.6 C (30.9 F)	n/a	n/a
Sep	35.0 C (95.0 F)	-6.7 C (19.9 F)	n/a	n/a
Oct	28.3 C (82.9 F)	-11.1 C (12.0 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-27.2 C (-17.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-34.4 C (-29.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Houlton still stand. 1908 holds the most, with 34.

Standing records at Houlton by the year they were set
Year set	Standing records
1893	19
1894	29
1895	33
1896	6
1902	10
1903	21
1904	10
1905	30
1906	16
1907	13
1908	34
1909	15
1910	28
1911	29
1912	22
1913	22
1914	33
1915	17
1916	18
1917	14
1918	20
1919	21
1920	17
1921	19
1924	1
1925	22
1926	17
1927	14
1928	10
1929	6
1930	16
1931	13
1932	11
1933	14
1934	27
1935	14
1936	30
1937	18
1938	18
1939	18
1940	20
1941	10
1942	19
1943	13
1944	18
1945	25
1946	12
1947	24
1948	14
1949	23
1950	17
1951	9
1952	10
1953	23
1954	14
1955	5
1956	19
1957	14
1958	16
1959	18
1960	9
1961	12
1962	18
1963	16
1964	22
1965	16
1966	17
1967	14
1968	9
1969	12
1970	17
1971	11
1972	15
1973	15
1974	23
1975	15
1976	15
1977	25
1978	10
1979	26
1980	9
1981	22
1982	21
1983	15
1984	10
1985	2

Wettest Day of Each Month

Nov: 203.7 mm (8.0 in)

The wettest day on record for each calendar month at Houlton. The most was 203.7 mm (8.0 in) on 3 November 1909.

Record daily precipitation for each month at Houlton
Month	Record daily precipitation (mm)	Date
Jan	53.3 mm (2.1 in)	17 January 1906
Feb	53.3 mm (2.1 in)	15 February 1908
Mar	53.3 mm (2.1 in)	15 March 1913
Apr	52.3 mm (2.1 in)	4 April 1933
May	66.0 mm (2.6 in)	27 May 1961
Jun	90.2 mm (3.6 in)	16 June 1942
Jul	67.3 mm (2.6 in)	6 July 1951
Aug	68.6 mm (2.7 in)	14 August 1963
Sep	147.3 mm (5.8 in)	29 September 1909
Oct	87.1 mm (3.4 in)	25 October 1959
Nov	203.7 mm (8.0 in)	3 November 1909
Dec	71.1 mm (2.8 in)	17 December 1960

Period of Record Coverage

1893 to 1985

87 years of record at Houlton, 1893 to 1985. 16 years have data for under 90 percent of days and are left out of rankings: 1896, 1902, 1906, 1907, 1914, 1915, 1916, 1920 and others.

Days with data per year at Houlton
Year	Days with data	Share of year	Complete
1893	335	92%	Yes
1894	363	99%	Yes
1895	360	99%	Yes
1896	59	16%	No
1902	271	74%	No
1903	352	96%	Yes
1904	353	96%	Yes
1905	349	96%	Yes
1906	321	88%	No
1907	308	84%	No
1908	357	98%	Yes
1909	355	97%	Yes
1910	361	99%	Yes
1911	351	96%	Yes
1912	351	96%	Yes
1913	340	93%	Yes
1914	327	90%	No
1915	315	86%	No
1916	314	86%	No
1917	348	95%	Yes
1918	330	90%	Yes
1919	334	92%	Yes
1920	279	76%	No
1921	291	80%	No
1922	30	8%	No
1924	123	34%	No
1925	344	94%	Yes
1926	357	98%	Yes
1927	357	98%	Yes
1928	357	98%	Yes
1929	347	95%	Yes
1930	332	91%	Yes
1931	346	95%	Yes
1932	325	89%	No
1933	329	90%	Yes
1934	329	90%	Yes
1935	352	96%	Yes
1936	364	99%	Yes
1937	365	100%	Yes
1938	362	99%	Yes
1939	362	99%	Yes
1940	361	99%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	364	100%	Yes
1944	365	100%	Yes
1945	365	100%	Yes
1946	332	91%	Yes
1947	363	99%	Yes
1948	365	100%	Yes
1949	364	100%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	364	100%	Yes
1955	362	99%	Yes
1956	361	99%	Yes
1957	364	100%	Yes
1958	361	99%	Yes
1959	333	91%	Yes
1960	361	99%	Yes
1961	363	99%	Yes
1962	361	99%	Yes
1963	361	99%	Yes
1964	305	83%	No
1965	334	92%	Yes
1966	332	91%	Yes
1967	364	100%	Yes
1968	273	75%	No
1969	364	100%	Yes
1970	364	100%	Yes
1971	363	99%	Yes
1972	365	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	363	99%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	332	91%	Yes
1979	364	100%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	359	98%	Yes
1983	364	100%	Yes
1984	327	89%	No
1985	117	32%	No

Latest Records

Latest records at Houlton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1985	Houlton, US	daily low min	-7.8 C (18.0 F)	1.1 C (2.0 F)	76 years	34 of 100 (Routine)
16 April 1985	Houlton, US	daily high min	7.8 C (46.0 F)	3.4 C (6.1 F)	80 years	41 of 100 (Notable)
14 April 1985	Houlton, US	daily low max (Tie)	1.1 C (34.0 F)	tie	40 years	5 of 100 (Routine)
13 April 1985	Houlton, US	daily low max (Tie)	0.6 C (33.1 F)	tie	20 years	3 of 100 (Routine)
13 April 1985	Houlton, US	daily low min (Tie)	-10.0 C (14.0 F)	tie	12 years	3 of 100 (Routine)
24 February 1985	Houlton, US	daily rain	19.1 mm (0.8 in)	5.1 mm (0.20 in)	24 years	20 of 100 (Routine)
10 February 1985	Houlton, US	daily high min (Tie)	-3.9 C (25.0 F)	tie	60 years	6 of 100 (Routine)
17 December 1984	Houlton, US	daily high min (Tie)	1.1 C (34.0 F)	tie	89 years	8 of 100 (Routine)
6 December 1984	Houlton, US	daily snowfall	20.3 cm (8.0 in)	2.5 cm (1.0 in)	32 years	21 of 100 (Routine)
4 December 1984	Houlton, US	daily snowfall	30.5 cm (12.0 in)	5.1 cm (2.0 in)	79 years	38 of 100 (Notable)
4 December 1984	Houlton, US	daily rain	20.3 mm (0.8 in)	5.1 mm (0.20 in)	79 years	20 of 100 (Routine)
12 November 1984	Houlton, US	daily high min	10.0 C (50.0 F)	3.9 C (7.0 F)	15 years	20 of 100 (Routine)
4 November 1984	Houlton, US	daily low min	-8.9 C (16.0 F)	0.6 C (1.1 F)	12 years	13 of 100 (Routine)
4 October 1984	Houlton, US	daily low max (Tie)	7.2 C (45.0 F)	tie	10 years	3 of 100 (Routine)
16 August 1984	Houlton, US	daily rain	38.1 mm (1.5 in)	8.9 mm (0.35 in)	3 years	17 of 100 (Routine)
7 July 1984	Houlton, US	daily high min (Tie)	19.4 C (66.9 F)	tie	88 years	8 of 100 (Routine)
26 June 1984	Houlton, US	daily rain	35.6 mm (1.4 in)	2.6 mm (0.10 in)	80 years	35 of 100 (Notable)
26 June 1984	Houlton, US	daily low max	13.9 C (57.0 F)	1.1 C (2.0 F)	44 years	24 of 100 (Routine)
19 June 1984	Houlton, US	daily rain	33.3 mm (1.3 in)	21.4 mm (0.8 in)	54 years	45 of 100 (Notable)
2 June 1984	Houlton, US	daily rain	59.7 mm (2.4 in)	19.1 mm (0.8 in)	32 years	36 of 100 (Notable)

Climate Trend

67 complete years, 1894 to 1983

One stripe for each of 67 complete years at Houlton, 1894 to 1983. Blue stripes are years cooler than the station's own mean of 5.0 C (41.0 F); red stripes are warmer. The coolest year was 1926, at 3.1 C (37.6 F), and the warmest was 1983, at 6.4 C (43.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Houlton as warming stripes, 1894 to 1983
Year	Annual mean temperature	Difference from the station mean
1894	4.5 C	-0.46 C
1895	5.0 C	-0.04 C
1903	6.2 C	+1.17 C
1904	4.0 C	-0.99 C
1905	4.2 C	-0.77 C
1908	5.8 C	+0.77 C
1909	4.9 C	-0.12 C
1910	5.4 C	+0.39 C
1911	5.6 C	+0.55 C
1912	5.0 C	+0.04 C
1913	6.1 C	+1.09 C
1914	4.2 C	-0.77 C
1917	3.8 C	-1.25 C
1918	4.5 C	-0.54 C
1919	5.4 C	+0.44 C
1925	3.6 C	-1.38 C
1926	3.1 C	-1.89 C
1927	4.8 C	-0.18 C
1928	4.3 C	-0.69 C
1929	4.3 C	-0.67 C
1930	5.2 C	+0.19 C
1931	5.8 C	+0.76 C
1932	5.5 C	+0.48 C
1933	4.8 C	-0.19 C
1934	4.0 C	-0.99 C
1935	4.5 C	-0.52 C
1936	4.4 C	-0.65 C
1937	5.9 C	+0.91 C
1938	5.3 C	+0.29 C
1939	3.9 C	-1.13 C
1940	4.3 C	-0.70 C
1941	5.2 C	+0.23 C
1942	5.7 C	+0.73 C
1943	4.6 C	-0.38 C
1944	5.7 C	+0.69 C
1945	5.7 C	+0.69 C
1947	5.7 C	+0.74 C
1948	4.9 C	-0.11 C
1949	6.0 C	+1.01 C
1950	5.3 C	+0.25 C
1951	5.6 C	+0.60 C
1952	5.8 C	+0.79 C
1953	6.4 C	+1.37 C
1954	5.2 C	+0.22 C
1955	5.1 C	+0.13 C
1956	4.5 C	-0.50 C
1957	5.4 C	+0.43 C
1958	4.8 C	-0.19 C
1960	5.5 C	+0.53 C
1961	4.9 C	-0.06 C
1962	4.1 C	-0.94 C
1963	4.3 C	-0.70 C
1967	4.3 C	-0.71 C
1969	5.2 C	+0.24 C
1970	4.5 C	-0.47 C
1971	4.8 C	-0.25 C
1972	3.8 C	-1.19 C
1973	6.0 C	+1.01 C
1974	4.7 C	-0.31 C
1975	5.2 C	+0.21 C
1976	4.6 C	-0.39 C
1977	5.0 C	-0.03 C
1979	6.1 C	+1.09 C
1980	4.8 C	-0.18 C
1981	6.1 C	+1.14 C
1982	5.0 C	+0.04 C
1983	6.4 C	+1.43 C

The fitted trend in annual mean temperature here over 1894 to 1983 is 0.05 C (-0.02 to 0.12) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.09 F (-0.05 to 0.22) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Houlton
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.05 C (-0.02 to 0.12) per decade	0.09 F (-0.05 to 0.22) per decade	1894 to 1983	67	Not clearly different from zero
Mean daily maximum	-0.11 C (-0.20 to -0.02) per decade	-0.20 F (-0.36 to -0.04) per decade	1894 to 1983	67	Fall
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.5) per decade	1894 to 1983	67	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 1985

Yearly extremes at Houlton: 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)	87
Coldest night (TNn)	-41.7 C (-43.1 F)	1925	-31.7 C (-25.1 F)	87
Wettest day (Rx1day)	203.7 mm (8.0 in)	1909	50.8 mm (2.0 in)	87
Wettest five days (Rx5day)	154.9 mm (6.1 in)	1909	72.2 mm (2.8 in)	86
Longest dry spell (CDD)	39 days	1903	17 days	86

Hottest day (TXx)

The hottest day of the year at Houlton, 1893 to 1985. 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 Houlton by year
Year	Hottest day (TXx)
1893	36.1 C (97.0 F)
1894	34.4 C (93.9 F)
1895	36.1 C (97.0 F)
1896	6.7 C (44.1 F)
1902	31.1 C (88.0 F)
1903	33.3 C (91.9 F)
1904	31.7 C (89.1 F)
1905	31.7 C (89.1 F)
1906	35.0 C (95.0 F)
1907	35.6 C (96.1 F)
1908	37.8 C (100.0 F)
1909	35.0 C (95.0 F)
1910	37.8 C (100.0 F)
1911	38.9 C (102.0 F)
1912	35.0 C (95.0 F)
1913	33.9 C (93.0 F)
1914	35.0 C (95.0 F)
1915	30.6 C (87.1 F)
1916	35.0 C (95.0 F)
1917	34.4 C (93.9 F)
1918	33.3 C (91.9 F)
1919	35.0 C (95.0 F)
1920	33.3 C (91.9 F)
1921	32.2 C (90.0 F)
1922	12.2 C (54.0 F)
1924	26.7 C (80.1 F)
1925	33.9 C (93.0 F)
1926	31.7 C (89.1 F)
1927	31.1 C (88.0 F)
1928	32.8 C (91.0 F)
1929	33.3 C (91.9 F)
1930	33.3 C (91.9 F)
1931	33.3 C (91.9 F)
1932	32.2 C (90.0 F)
1933	32.2 C (90.0 F)
1934	31.1 C (88.0 F)
1935	36.7 C (98.1 F)
1936	28.9 C (84.0 F)
1937	32.8 C (91.0 F)
1938	32.8 C (91.0 F)
1939	33.9 C (93.0 F)
1940	33.3 C (91.9 F)
1941	34.4 C (93.9 F)
1942	33.9 C (93.0 F)
1943	34.4 C (93.9 F)
1944	36.7 C (98.1 F)
1945	33.9 C (93.0 F)
1946	34.4 C (93.9 F)
1947	35.0 C (95.0 F)
1948	33.3 C (91.9 F)
1949	34.4 C (93.9 F)
1950	31.1 C (88.0 F)
1951	30.6 C (87.1 F)
1952	34.4 C (93.9 F)
1953	32.2 C (90.0 F)
1954	30.0 C (86.0 F)
1955	34.4 C (93.9 F)
1956	32.2 C (90.0 F)
1957	32.2 C (90.0 F)
1958	29.4 C (84.9 F)
1959	33.9 C (93.0 F)
1960	32.8 C (91.0 F)
1961	31.7 C (89.1 F)
1962	31.1 C (88.0 F)
1963	32.8 C (91.0 F)
1964	32.8 C (91.0 F)
1965	30.6 C (87.1 F)
1966	30.6 C (87.1 F)
1967	31.7 C (89.1 F)
1968	26.7 C (80.1 F)
1969	32.8 C (91.0 F)
1970	31.1 C (88.0 F)
1971	31.7 C (89.1 F)
1972	31.7 C (89.1 F)
1973	31.7 C (89.1 F)
1974	30.6 C (87.1 F)
1975	35.6 C (96.1 F)
1976	34.4 C (93.9 F)
1977	34.4 C (93.9 F)
1978	34.4 C (93.9 F)
1979	32.2 C (90.0 F)
1980	32.2 C (90.0 F)
1981	32.2 C (90.0 F)
1982	32.8 C (91.0 F)
1983	34.4 C (93.9 F)
1984	33.9 C (93.0 F)
1985	21.7 C (71.1 F)

Coldest night (TNn)

The coldest night of the year at Houlton, 1893 to 1985. The record is -41.7 C (-43.1 F) in 1925, marked on the chart; the median year is -31.7 C (-25.1 F).

Coldest night (TNn) at Houlton by year
Year	Coldest night (TNn)
1893	-33.3 C (-27.9 F)
1894	-39.4 C (-38.9 F)
1895	-32.2 C (-26.0 F)
1896	-36.7 C (-34.1 F)
1902	-29.4 C (-20.9 F)
1903	-30.6 C (-23.1 F)
1904	-33.3 C (-27.9 F)
1905	-34.4 C (-29.9 F)
1906	-30.0 C (-22.0 F)
1907	-37.8 C (-36.0 F)
1908	-30.0 C (-22.0 F)
1909	-32.2 C (-26.0 F)
1910	-31.7 C (-25.1 F)
1911	-32.2 C (-26.0 F)
1912	-36.1 C (-33.0 F)
1913	-28.9 C (-20.0 F)
1914	-34.4 C (-29.9 F)
1915	-32.2 C (-26.0 F)
1916	-28.3 C (-18.9 F)
1917	-34.4 C (-29.9 F)
1918	-36.7 C (-34.1 F)
1919	-33.3 C (-27.9 F)
1920	-36.1 C (-33.0 F)
1921	-27.2 C (-17.0 F)
1922	-17.8 C (0.0 F)
1924	-27.8 C (-18.0 F)
1925	-41.7 C (-43.1 F)
1926	-30.0 C (-22.0 F)
1927	-33.3 C (-27.9 F)
1928	-26.7 C (-16.1 F)
1929	-30.6 C (-23.1 F)
1930	-32.8 C (-27.0 F)
1931	-33.9 C (-29.0 F)
1932	-27.8 C (-18.0 F)
1933	-33.3 C (-27.9 F)
1934	-36.7 C (-34.1 F)
1935	-34.4 C (-29.9 F)
1936	-26.1 C (-15.0 F)
1937	-27.8 C (-18.0 F)
1938	-33.3 C (-27.9 F)
1939	-27.8 C (-18.0 F)
1940	-33.3 C (-27.9 F)
1941	-30.0 C (-22.0 F)
1942	-31.1 C (-24.0 F)
1943	-32.2 C (-26.0 F)
1944	-27.2 C (-17.0 F)
1945	-33.3 C (-27.9 F)
1946	-27.2 C (-17.0 F)
1947	-30.0 C (-22.0 F)
1948	-36.1 C (-33.0 F)
1949	-30.6 C (-23.1 F)
1950	-29.4 C (-20.9 F)
1951	-31.7 C (-25.1 F)
1952	-30.6 C (-23.1 F)
1953	-24.4 C (-11.9 F)
1954	-29.4 C (-20.9 F)
1955	-37.2 C (-35.0 F)
1956	-27.8 C (-18.0 F)
1957	-35.6 C (-32.1 F)
1958	-28.9 C (-20.0 F)
1959	-28.9 C (-20.0 F)
1960	-28.9 C (-20.0 F)
1961	-31.7 C (-25.1 F)
1962	-36.7 C (-34.1 F)
1963	-33.3 C (-27.9 F)
1964	-27.8 C (-18.0 F)
1965	-30.0 C (-22.0 F)
1966	-32.2 C (-26.0 F)
1967	-35.0 C (-31.0 F)
1968	-28.9 C (-20.0 F)
1969	-29.4 C (-20.9 F)
1970	-31.7 C (-25.1 F)
1971	-37.2 C (-35.0 F)
1972	-33.3 C (-27.9 F)
1973	-30.6 C (-23.1 F)
1974	-31.1 C (-24.0 F)
1975	-31.1 C (-24.0 F)
1976	-34.4 C (-29.9 F)
1977	-31.7 C (-25.1 F)
1978	-27.8 C (-18.0 F)
1979	-30.0 C (-22.0 F)
1980	-30.0 C (-22.0 F)
1981	-30.6 C (-23.1 F)
1982	-35.0 C (-31.0 F)
1983	-24.4 C (-11.9 F)
1984	-33.3 C (-27.9 F)
1985	-29.4 C (-20.9 F)

Wettest day (Rx1day)

The wettest day of the year at Houlton, 1893 to 1985. The record is 203.7 mm (8.0 in) in 1909, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Houlton by year
Year	Wettest day (Rx1day)
1893	48.3 mm (1.9 in)
1894	58.4 mm (2.3 in)
1895	48.3 mm (1.9 in)
1896	15.2 mm (0.6 in)
1902	43.7 mm (1.7 in)
1903	28.2 mm (1.1 in)
1904	50.8 mm (2.0 in)
1905	27.9 mm (1.1 in)
1906	53.3 mm (2.1 in)
1907	78.7 mm (3.1 in)
1908	53.3 mm (2.1 in)
1909	203.7 mm (8.0 in)
1910	35.6 mm (1.4 in)
1911	48.3 mm (1.9 in)
1912	53.3 mm (2.1 in)
1913	53.3 mm (2.1 in)
1914	41.1 mm (1.6 in)
1915	36.3 mm (1.4 in)
1916	48.3 mm (1.9 in)
1917	61.0 mm (2.4 in)
1918	44.5 mm (1.8 in)
1919	38.1 mm (1.5 in)
1920	49.5 mm (1.9 in)
1921	40.6 mm (1.6 in)
1922	27.4 mm (1.1 in)
1924	28.7 mm (1.1 in)
1925	44.5 mm (1.8 in)
1926	45.7 mm (1.8 in)
1927	50.8 mm (2.0 in)
1928	37.1 mm (1.5 in)
1929	44.5 mm (1.8 in)
1930	51.3 mm (2.0 in)
1931	73.7 mm (2.9 in)
1932	50.3 mm (2.0 in)
1933	61.0 mm (2.4 in)
1934	49.0 mm (1.9 in)
1935	36.1 mm (1.4 in)
1936	54.6 mm (2.1 in)
1937	58.4 mm (2.3 in)
1938	34.3 mm (1.4 in)
1939	70.4 mm (2.8 in)
1940	50.8 mm (2.0 in)
1941	40.1 mm (1.6 in)
1942	90.2 mm (3.6 in)
1943	36.8 mm (1.4 in)
1944	73.7 mm (2.9 in)
1945	53.3 mm (2.1 in)
1946	23.9 mm (0.9 in)
1947	63.5 mm (2.5 in)
1948	46.2 mm (1.8 in)
1949	49.0 mm (1.9 in)
1950	58.4 mm (2.3 in)
1951	67.3 mm (2.6 in)
1952	57.2 mm (2.3 in)
1953	35.1 mm (1.4 in)
1954	89.4 mm (3.5 in)
1955	34.3 mm (1.4 in)
1956	63.5 mm (2.5 in)
1957	29.7 mm (1.2 in)
1958	52.1 mm (2.1 in)
1959	87.1 mm (3.4 in)
1960	71.1 mm (2.8 in)
1961	66.0 mm (2.6 in)
1962	64.8 mm (2.6 in)
1963	68.6 mm (2.7 in)
1964	58.4 mm (2.3 in)
1965	54.6 mm (2.1 in)
1966	38.6 mm (1.5 in)
1967	56.4 mm (2.2 in)
1968	36.8 mm (1.4 in)
1969	94.0 mm (3.7 in)
1970	52.1 mm (2.1 in)
1971	36.8 mm (1.4 in)
1972	61.0 mm (2.4 in)
1973	49.5 mm (1.9 in)
1974	30.5 mm (1.2 in)
1975	48.3 mm (1.9 in)
1976	67.3 mm (2.6 in)
1977	39.4 mm (1.6 in)
1978	53.3 mm (2.1 in)
1979	50.8 mm (2.0 in)
1980	33.0 mm (1.3 in)
1981	38.6 mm (1.5 in)
1982	61.0 mm (2.4 in)
1983	67.3 mm (2.6 in)
1984	59.7 mm (2.4 in)
1985	19.1 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Houlton, 1893 to 1985. The record is 154.9 mm (6.1 in) in 1909, marked on the chart; the median year is 72.2 mm (2.8 in).

Wettest five days (Rx5day) at Houlton by year
Year	Wettest five days (Rx5day)
1893	54.4 mm (2.1 in)
1894	65.3 mm (2.6 in)
1895	57.2 mm (2.3 in)
1896	30.4 mm (1.2 in)
1902	57.6 mm (2.3 in)
1903	57.1 mm (2.2 in)
1904	63.5 mm (2.5 in)
1905	38.1 mm (1.5 in)
1906	68.5 mm (2.7 in)
1907	78.7 mm (3.1 in)
1908	66.8 mm (2.6 in)
1909	154.9 mm (6.1 in)
1910	62.6 mm (2.5 in)
1911	61.0 mm (2.4 in)
1912	109.3 mm (4.3 in)
1913	53.3 mm (2.1 in)
1914	56.4 mm (2.2 in)
1915	41.4 mm (1.6 in)
1916	59.7 mm (2.4 in)
1917	67.9 mm (2.7 in)
1918	55.9 mm (2.2 in)
1919	49.5 mm (1.9 in)
1920	87.6 mm (3.4 in)
1921	55.1 mm (2.2 in)
1922	n/a
1924	52.1 mm (2.1 in)
1925	88.2 mm (3.5 in)
1926	53.1 mm (2.1 in)
1927	66.3 mm (2.6 in)
1928	46.7 mm (1.8 in)
1929	48.0 mm (1.9 in)
1930	79.0 mm (3.1 in)
1931	86.4 mm (3.4 in)
1932	79.1 mm (3.1 in)
1933	74.4 mm (2.9 in)
1934	58.4 mm (2.3 in)
1935	60.8 mm (2.4 in)
1936	72.4 mm (2.9 in)
1937	79.8 mm (3.1 in)
1938	78.9 mm (3.1 in)
1939	86.7 mm (3.4 in)
1940	84.3 mm (3.3 in)
1941	51.3 mm (2.0 in)
1942	132.9 mm (5.2 in)
1943	68.3 mm (2.7 in)
1944	79.3 mm (3.1 in)
1945	61.9 mm (2.4 in)
1946	43.9 mm (1.7 in)
1947	83.3 mm (3.3 in)
1948	75.1 mm (3.0 in)
1949	71.8 mm (2.8 in)
1950	121.1 mm (4.8 in)
1951	90.5 mm (3.6 in)
1952	80.1 mm (3.2 in)
1953	68.5 mm (2.7 in)
1954	139.7 mm (5.5 in)
1955	54.6 mm (2.1 in)
1956	71.2 mm (2.8 in)
1957	83.2 mm (3.3 in)
1958	72.0 mm (2.8 in)
1959	102.1 mm (4.0 in)
1960	86.4 mm (3.4 in)
1961	123.2 mm (4.9 in)
1962	108.7 mm (4.3 in)
1963	89.0 mm (3.5 in)
1964	82.5 mm (3.2 in)
1965	80.0 mm (3.1 in)
1966	50.8 mm (2.0 in)
1967	82.6 mm (3.3 in)
1968	60.5 mm (2.4 in)
1969	110.5 mm (4.4 in)
1970	83.8 mm (3.3 in)
1971	55.9 mm (2.2 in)
1972	83.9 mm (3.3 in)
1973	81.3 mm (3.2 in)
1974	49.6 mm (2.0 in)
1975	64.8 mm (2.6 in)
1976	89.4 mm (3.5 in)
1977	76.3 mm (3.0 in)
1978	74.4 mm (2.9 in)
1979	76.6 mm (3.0 in)
1980	54.6 mm (2.1 in)
1981	112.0 mm (4.4 in)
1982	77.5 mm (3.1 in)
1983	104.6 mm (4.1 in)
1984	73.7 mm (2.9 in)
1985	33.0 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Houlton, 1893 to 1985. The record is 39 days in 1903, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Houlton by year
Year	Longest dry spell (CDD)
1893	15 days
1894	14 days
1895	14 days
1896	9 days
1902	16 days
1903	39 days
1904	19 days
1905	29 days
1906	25 days
1907	24 days
1908	37 days
1909	30 days
1910	18 days
1911	31 days
1912	17 days
1913	20 days
1914	23 days
1915	19 days
1916	17 days
1917	17 days
1918	37 days
1919	19 days
1920	19 days
1921	15 days
1922	n/a
1924	26 days
1925	11 days
1926	13 days
1927	16 days
1928	17 days
1929	10 days
1930	19 days
1931	15 days
1932	18 days
1933	10 days
1934	16 days
1935	16 days
1936	11 days
1937	20 days
1938	17 days
1939	19 days
1940	15 days
1941	17 days
1942	19 days
1943	14 days
1944	26 days
1945	22 days
1946	12 days
1947	12 days
1948	17 days
1949	12 days
1950	21 days
1951	16 days
1952	12 days
1953	15 days
1954	11 days
1955	12 days
1956	17 days
1957	13 days
1958	11 days
1959	20 days
1960	19 days
1961	14 days
1962	19 days
1963	16 days
1964	19 days
1965	18 days
1966	12 days
1967	24 days
1968	26 days
1969	14 days
1970	25 days
1971	12 days
1972	12 days
1973	20 days
1974	13 days
1975	14 days
1976	19 days
1977	16 days
1978	22 days
1979	19 days
1980	23 days
1981	15 days
1982	21 days
1983	15 days
1984	15 days
1985	17 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

67 years with a frost

Across 67 years with a frost, the median last spring frost at Houlton falls on 23 May and the median first autumn frost on 20 September, which leaves a median of 120 days between them.

In 1948 to 1983 the median growing season was 121 days. That is 4 days more than in 1894 to 1939.

Fitted over all years, the growing season changes by +2.1 days per decade at this station.

Frost dates and growing season at Houlton
Measure	Median, all years	Earliest period (1894 to 1939)	Recent period (1948 to 1983)	Recent against earliest	Fitted trend
Last spring frost	23 May	25 May	23 May	2 days earlier	-1.0 days per decade
First autumn frost	20 September	19 September	20 September	1 day later	+1.1 days per decade
Growing days	120 days	117 days	121 days	4 days more	+2.1 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

56 years, 1894 to 1984

A day with at least 52.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 97.7 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Houlton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	52.5 mm (2.1 in)
5 years	67.5 mm (2.7 in)
10 years	76.1 mm (3.0 in)
25 years	85.7 mm (3.4 in)
50 years	92.0 mm (3.6 in)
100 years	97.7 mm (3.8 in)	Longer than the 56 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, 56 years of values from 1894 to 1984.

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: 94.0 mm (3.7 in) in 1969; 90.2 mm (3.6 in) in 1942; 89.4 mm (3.5 in) in 1954.

Station Changes

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

Download the Data

Data for Houlton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Houlton 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).