Millerton Weather Records (USC00135517)

Record envelope, standing records and threshold days for Millerton (USC00135517), Iowa, United States, with 59 years of record.

Key Facts for Millerton

Millerton (USC00135517) is a weather station in Iowa, United States at 40.83 latitude and -93.30 longitude, 326 m (1,070 ft) above sea level.
The station reports from 1893 to 1951, 59 years of record.
1,464 records set at Millerton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Millerton set a daily record high minimum temperature of 2.8 C (37.0 F) on 26 February 1951.

About the Station

Location: Iowa, United States, 40.83 latitude, -93.30 longitude.
Elevation: 326 m (1,070 ft).
Period of record: 1893 to 1951, 59 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 Millerton. 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 Millerton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.8 C (64.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Feb	22.8 C (73.0 F)	-35.0 C (-31.0 F)	n/a	n/a
Mar	31.1 C (88.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Apr	33.3 C (91.9 F)	-13.9 C (7.0 F)	n/a	n/a
May	38.3 C (100.9 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	45.0 C (113.0 F)	7.2 C (45.0 F)	n/a	n/a
Aug	43.9 C (111.0 F)	2.2 C (36.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Nov	28.3 C (82.9 F)	-20.6 C (-5.1 F)	n/a	n/a
Dec	20.6 C (69.1 F)	-31.1 C (-24.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Millerton still stand. 1936 holds the most, with 77.

Standing records at Millerton by the year they were set
Year set	Standing records
1893	15
1894	46
1895	30
1896	30
1897	39
1898	18
1899	36
1900	13
1901	34
1902	30
1903	26
1904	17
1905	23
1906	21
1907	23
1908	29
1909	38
1910	22
1911	33
1912	28
1913	42
1914	25
1915	29
1916	18
1917	36
1918	29
1919	14
1920	16
1921	24
1922	21
1923	15
1924	33
1925	31
1926	14
1927	20
1928	16
1929	21
1930	45
1931	22
1932	20
1933	22
1934	45
1935	17
1936	77
1937	24
1938	18
1939	32
1940	19
1941	13
1942	25
1943	17
1944	15
1945	14
1946	26
1947	19
1948	11
1949	13
1950	13
1951	2

All-Time Record Progression

7 new records

7 all-time records were set at Millerton between 5 January 1924 and 14 July 1936. Each dot is a new record.

When Millerton set new all-time records
Date	Kind	Detail
1924-01-05	Record low maximum temperature	Record low maximum temperature -22.8 C (-9.0 F)
1930-07-27	Record high minimum temperature	Record high minimum temperature 27.2 C (81.0 F)
1930-08-04	Record high minimum temperature	Record high minimum temperature 28.3 C (82.9 F)
1934-07-19	Record high minimum temperature	Record high minimum temperature 28.9 C (84.0 F)
1936-02-05	Record snow depth	Record snow depth 533.4 cm (210.0 in)
1936-02-22	Record snow depth	Record snow depth 558.8 cm (220.0 in)
1936-07-14	Record high maximum temperature	Record high maximum temperature 45.0 C (113.0 F)

Wettest Day of Each Month

Aug: 205.7 mm (8.1 in)

The wettest day on record for each calendar month at Millerton. The most was 205.7 mm (8.1 in) on 27 August 1903.

Record daily precipitation for each month at Millerton
Month	Record daily precipitation (mm)	Date
Jan	63.5 mm (2.5 in)	25 January 1898
Feb	71.6 mm (2.8 in)	17 February 1911
Mar	51.6 mm (2.0 in)	24 March 1920
Apr	82.3 mm (3.2 in)	24 April 1897
May	84.3 mm (3.3 in)	2 May 1912
Jun	146.8 mm (5.8 in)	18 June 1946
Jul	132.8 mm (5.2 in)	18 July 1902
Aug	205.7 mm (8.1 in)	27 August 1903
Sep	142.0 mm (5.6 in)	3 September 1926
Oct	77.7 mm (3.1 in)	29 October 1896
Nov	63.0 mm (2.5 in)	17 November 1928
Dec	50.8 mm (2.0 in)	3 December 1897

Period of Record Coverage

1893 to 1951

59 years of record at Millerton, 1893 to 1951. 6 years have data for under 90 percent of days and are left out of rankings: 1893, 1911, 1927, 1928, 1950, 1951.

Days with data per year at Millerton
Year	Days with data	Share of year	Complete
1893	235	64%	No
1894	356	98%	Yes
1895	358	98%	Yes
1896	362	99%	Yes
1897	359	98%	Yes
1898	359	98%	Yes
1899	353	97%	Yes
1900	357	98%	Yes
1901	354	97%	Yes
1902	363	99%	Yes
1903	363	99%	Yes
1904	361	99%	Yes
1905	363	99%	Yes
1906	364	100%	Yes
1907	365	100%	Yes
1908	364	99%	Yes
1909	364	100%	Yes
1910	350	96%	Yes
1911	327	90%	No
1912	364	99%	Yes
1913	365	100%	Yes
1914	365	100%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	361	99%	Yes
1918	334	92%	Yes
1919	364	100%	Yes
1920	365	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	364	100%	Yes
1924	364	99%	Yes
1925	365	100%	Yes
1926	351	96%	Yes
1927	326	89%	No
1928	285	78%	No
1929	363	99%	Yes
1930	362	99%	Yes
1931	361	99%	Yes
1932	365	100%	Yes
1933	362	99%	Yes
1934	364	100%	Yes
1935	362	99%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	333	91%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	362	99%	Yes
1942	364	100%	Yes
1943	363	99%	Yes
1944	362	99%	Yes
1945	362	99%	Yes
1946	335	92%	Yes
1947	362	99%	Yes
1948	362	99%	Yes
1949	346	95%	Yes
1950	294	81%	No
1951	59	16%	No

Latest Records

Latest records at Millerton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 February 1951	Millerton, US	daily high min	2.8 C (37.0 F)	1.1 C (2.0 F)	48 years	20 of 100 (Routine)
18 February 1951	Millerton, US	daily high min (Tie)	3.3 C (37.9 F)	tie	37 years	4 of 100 (Routine)
16 February 1951	Millerton, US	daily rain	19.6 mm (0.8 in)	12.0 mm (0.5 in)	27 years	20 of 100 (Routine)
16 February 1951	Millerton, US	daily snowfall	5.8 cm (2.3 in)	5.5 cm (2.2 in)	37 years	24 of 100 (Routine)
11 February 1951	Millerton, US	daily high max (Tie)	18.3 C (64.9 F)	tie	32 years	3 of 100 (Routine)
6 February 1951	Millerton, US	daily snowfall	2.5 cm (1.0 in)	1.7 cm (0.7 in)	29 years	15 of 100 (Routine)
31 January 1951	Millerton, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	0 years	10 of 100 (Routine)
20 January 1951	Millerton, US	daily snowfall	6.4 cm (2.5 in)	5.1 cm (2.0 in)	20 years	21 of 100 (Routine)
18 January 1951	Millerton, US	daily high max	17.2 C (63.0 F)	3.3 C (5.9 F)	4 years	10 of 100 (Routine)
16 January 1951	Millerton, US	daily high max (Tie)	13.3 C (55.9 F)	tie	56 years	5 of 100 (Routine)
3 January 1951	Millerton, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	15 years	14 of 100 (Routine)
2 January 1951	Millerton, US	daily snowfall	1.3 cm (0.5 in)	0.3 cm (0.1 in)	45 years	18 of 100 (Routine)
27 December 1950	Millerton, US	daily low min (Tie)	-23.9 C (-11.0 F)	tie	25 years	3 of 100 (Routine)
26 December 1950	Millerton, US	daily snowfall	0.5 cm (0.2 in)	0.2 cm (0.1 in)	29 years	13 of 100 (Routine)
3 October 1950	Millerton, US	daily low min	0.6 C (33.1 F)	1.1 C (2.0 F)	56 years	23 of 100 (Routine)
3 October 1950	Millerton, US	daily low max (Tie)	12.8 C (55.0 F)	tie	55 years	5 of 100 (Routine)
21 August 1950	Millerton, US	daily low min	7.2 C (45.0 F)	2.2 C (4.0 F)	35 years	20 of 100 (Routine)
20 August 1950	Millerton, US	daily low min	4.4 C (39.9 F)	2.8 C (5.0 F)	52 years	27 of 100 (Routine)
20 August 1950	Millerton, US	daily low max	20.0 C (68.0 F)	0.6 C (1.1 F)	16 years	11 of 100 (Routine)
13 August 1950	Millerton, US	daily low max	18.9 C (66.0 F)	0.5 C (0.9 F)	17 years	11 of 100 (Routine)

Climate Trend

48 complete years, 1894 to 1948

One stripe for each of 48 complete years at Millerton, 1894 to 1948. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1917, at 8.6 C (47.5 F), and the warmest was 1921, at 12.6 C (54.7 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Millerton as warming stripes, 1894 to 1948
Year	Annual mean temperature	Difference from the station mean
1894	11.2 C	+0.84 C
1895	9.4 C	-0.99 C
1896	10.4 C	+0.01 C
1897	10.2 C	-0.22 C
1898	9.7 C	-0.73 C
1899	9.8 C	-0.61 C
1900	10.5 C	+0.12 C
1901	10.5 C	+0.16 C
1902	9.7 C	-0.68 C
1903	9.4 C	-0.97 C
1904	9.3 C	-1.12 C
1905	9.9 C	-0.44 C
1906	10.6 C	+0.18 C
1907	10.3 C	-0.10 C
1908	11.2 C	+0.80 C
1909	10.3 C	-0.09 C
1910	10.4 C	+0.04 C
1912	9.5 C	-0.92 C
1913	11.5 C	+1.13 C
1914	10.8 C	+0.42 C
1915	10.1 C	-0.27 C
1916	9.9 C	-0.49 C
1917	8.6 C	-1.77 C
1919	10.3 C	-0.11 C
1920	10.2 C	-0.17 C
1921	12.6 C	+2.21 C
1922	11.7 C	+1.27 C
1923	10.9 C	+0.53 C
1924	9.5 C	-0.86 C
1925	10.6 C	+0.23 C
1929	9.0 C	-1.36 C
1930	10.9 C	+0.47 C
1931	12.1 C	+1.72 C
1932	9.8 C	-0.55 C
1933	11.3 C	+0.93 C
1934	11.8 C	+1.38 C
1935	10.4 C	+0.02 C
1936	11.0 C	+0.63 C
1937	9.7 C	-0.66 C
1939	11.8 C	+1.40 C
1940	9.7 C	-0.70 C
1941	11.4 C	+1.03 C
1942	10.1 C	-0.27 C
1943	9.9 C	-0.46 C
1944	10.2 C	-0.16 C
1945	9.5 C	-0.88 C
1947	10.4 C	+0.02 C
1948	10.4 C	+0.04 C

The fitted trend in annual mean temperature here over 1894 to 1948 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Millerton
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.1 to 0.2) per decade	0.2 F (-0.1 to 0.4) per decade	1894 to 1948	48	Not clearly different from zero
Mean daily maximum	-0.05 C (-0.22 to 0.13) per decade	-0.1 F (-0.4 to 0.2) per decade	1894 to 1948	48	Not clearly different from zero
Mean daily minimum	0.2 C (0.1 to 0.4) per decade	0.4 F (0.1 to 0.7) per decade	1894 to 1948	48	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 1951

Yearly extremes at Millerton: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1936	37.2 C (99.0 F)	59
Coldest night (TNn)	-35.0 C (-31.0 F)	1905	-26.1 C (-15.0 F)	59
Wettest day (Rx1day)	205.7 mm (8.1 in)	1903	62.0 mm (2.4 in)	59
Wettest five days (Rx5day)	215.9 mm (8.5 in)	1903	99.3 mm (3.9 in)	59
Longest dry spell (CDD)	39 days	1904	23 days	59

Hottest day (TXx)

The hottest day of the year at Millerton, 1893 to 1951. The record is 45.0 C (113.0 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Millerton by year
Year	Hottest day (TXx)
1893	35.6 C (96.1 F)
1894	41.7 C (107.1 F)
1895	36.7 C (98.1 F)
1896	35.0 C (95.0 F)
1897	38.9 C (102.0 F)
1898	36.7 C (98.1 F)
1899	37.8 C (100.0 F)
1900	35.6 C (96.1 F)
1901	44.4 C (111.9 F)
1902	33.3 C (91.9 F)
1903	35.0 C (95.0 F)
1904	33.9 C (93.0 F)
1905	35.6 C (96.1 F)
1906	36.1 C (97.0 F)
1907	35.0 C (95.0 F)
1908	35.6 C (96.1 F)
1909	36.7 C (98.1 F)
1910	37.2 C (99.0 F)
1911	42.2 C (108.0 F)
1912	38.3 C (100.9 F)
1913	41.1 C (106.0 F)
1914	38.9 C (102.0 F)
1915	34.4 C (93.9 F)
1916	39.4 C (102.9 F)
1917	39.4 C (102.9 F)
1918	42.8 C (109.0 F)
1919	37.8 C (100.0 F)
1920	36.1 C (97.0 F)
1921	36.7 C (98.1 F)
1922	38.3 C (100.9 F)
1923	37.2 C (99.0 F)
1924	35.6 C (96.1 F)
1925	37.2 C (99.0 F)
1926	37.8 C (100.0 F)
1927	37.2 C (99.0 F)
1928	33.3 C (91.9 F)
1929	35.6 C (96.1 F)
1930	41.7 C (107.1 F)
1931	37.8 C (100.0 F)
1932	35.6 C (96.1 F)
1933	37.2 C (99.0 F)
1934	43.3 C (109.9 F)
1935	37.2 C (99.0 F)
1936	45.0 C (113.0 F)
1937	36.7 C (98.1 F)
1938	37.8 C (100.0 F)
1939	37.8 C (100.0 F)
1940	40.0 C (104.0 F)
1941	38.9 C (102.0 F)
1942	34.4 C (93.9 F)
1943	35.6 C (96.1 F)
1944	35.0 C (95.0 F)
1945	35.6 C (96.1 F)
1946	33.9 C (93.0 F)
1947	38.9 C (102.0 F)
1948	38.3 C (100.9 F)
1949	34.4 C (93.9 F)
1950	32.8 C (91.0 F)
1951	18.3 C (64.9 F)

Coldest night (TNn)

The coldest night of the year at Millerton, 1893 to 1951. The record is -35.0 C (-31.0 F) in 1905, marked on the chart; the median year is -26.1 C (-15.0 F).

Coldest night (TNn) at Millerton by year
Year	Coldest night (TNn)
1893	-21.1 C (-6.0 F)
1894	-31.7 C (-25.1 F)
1895	-28.3 C (-18.9 F)
1896	-22.2 C (-8.0 F)
1897	-26.1 C (-15.0 F)
1898	-23.9 C (-11.0 F)
1899	-31.7 C (-25.1 F)
1900	-23.3 C (-9.9 F)
1901	-27.8 C (-18.0 F)
1902	-28.9 C (-20.0 F)
1903	-26.1 C (-15.0 F)
1904	-30.6 C (-23.1 F)
1905	-35.0 C (-31.0 F)
1906	-22.2 C (-8.0 F)
1907	-26.1 C (-15.0 F)
1908	-22.2 C (-8.0 F)
1909	-25.6 C (-14.1 F)
1910	-28.3 C (-18.9 F)
1911	-25.6 C (-14.1 F)
1912	-34.4 C (-29.9 F)
1913	-25.6 C (-14.1 F)
1914	-26.1 C (-15.0 F)
1915	-30.0 C (-22.0 F)
1916	-30.0 C (-22.0 F)
1917	-30.0 C (-22.0 F)
1918	-31.1 C (-24.0 F)
1919	-28.9 C (-20.0 F)
1920	-22.2 C (-8.0 F)
1921	-20.6 C (-5.1 F)
1922	-20.6 C (-5.1 F)
1923	-22.8 C (-9.0 F)
1924	-31.1 C (-24.0 F)
1925	-23.3 C (-9.9 F)
1926	-25.0 C (-13.0 F)
1927	-25.6 C (-14.1 F)
1928	-18.9 C (-2.0 F)
1929	-27.2 C (-17.0 F)
1930	-30.6 C (-23.1 F)
1931	-18.3 C (-0.9 F)
1932	-27.8 C (-18.0 F)
1933	-27.8 C (-18.0 F)
1934	-27.8 C (-18.0 F)
1935	-24.4 C (-11.9 F)
1936	-31.1 C (-24.0 F)
1937	-20.6 C (-5.1 F)
1938	-22.2 C (-8.0 F)
1939	-22.2 C (-8.0 F)
1940	-28.9 C (-20.0 F)
1941	-18.3 C (-0.9 F)
1942	-28.3 C (-18.9 F)
1943	-30.6 C (-23.1 F)
1944	-26.7 C (-16.1 F)
1945	-23.9 C (-11.0 F)
1946	-22.8 C (-9.0 F)
1947	-27.8 C (-18.0 F)
1948	-24.4 C (-11.9 F)
1949	-24.4 C (-11.9 F)
1950	-23.9 C (-11.0 F)
1951	-26.7 C (-16.1 F)

Wettest day (Rx1day)

The wettest day of the year at Millerton, 1893 to 1951. The record is 205.7 mm (8.1 in) in 1903, marked on the chart; the median year is 62.0 mm (2.4 in).

Wettest day (Rx1day) at Millerton by year
Year	Wettest day (Rx1day)
1893	40.6 mm (1.6 in)
1894	46.0 mm (1.8 in)
1895	67.3 mm (2.6 in)
1896	77.7 mm (3.1 in)
1897	82.3 mm (3.2 in)
1898	118.6 mm (4.7 in)
1899	54.6 mm (2.1 in)
1900	49.5 mm (1.9 in)
1901	49.5 mm (1.9 in)
1902	132.8 mm (5.2 in)
1903	205.7 mm (8.1 in)
1904	49.8 mm (2.0 in)
1905	90.4 mm (3.6 in)
1906	81.3 mm (3.2 in)
1907	42.4 mm (1.7 in)
1908	50.8 mm (2.0 in)
1909	71.6 mm (2.8 in)
1910	38.1 mm (1.5 in)
1911	71.6 mm (2.8 in)
1912	84.3 mm (3.3 in)
1913	71.9 mm (2.8 in)
1914	56.4 mm (2.2 in)
1915	72.6 mm (2.9 in)
1916	79.2 mm (3.1 in)
1917	50.8 mm (2.0 in)
1918	59.2 mm (2.3 in)
1919	121.4 mm (4.8 in)
1920	62.2 mm (2.4 in)
1921	44.7 mm (1.8 in)
1922	71.1 mm (2.8 in)
1923	38.9 mm (1.5 in)
1924	40.1 mm (1.6 in)
1925	62.0 mm (2.4 in)
1926	142.0 mm (5.6 in)
1927	42.7 mm (1.7 in)
1928	88.4 mm (3.5 in)
1929	58.9 mm (2.3 in)
1930	42.4 mm (1.7 in)
1931	54.6 mm (2.1 in)
1932	45.7 mm (1.8 in)
1933	69.9 mm (2.8 in)
1934	59.4 mm (2.3 in)
1935	83.6 mm (3.3 in)
1936	50.8 mm (2.0 in)
1937	56.4 mm (2.2 in)
1938	58.9 mm (2.3 in)
1939	61.0 mm (2.4 in)
1940	40.6 mm (1.6 in)
1941	56.1 mm (2.2 in)
1942	93.0 mm (3.7 in)
1943	72.4 mm (2.9 in)
1944	94.7 mm (3.7 in)
1945	74.2 mm (2.9 in)
1946	146.8 mm (5.8 in)
1947	82.8 mm (3.3 in)
1948	36.8 mm (1.4 in)
1949	62.7 mm (2.5 in)
1950	104.9 mm (4.1 in)
1951	19.6 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Millerton, 1893 to 1951. The record is 215.9 mm (8.5 in) in 1903, marked on the chart; the median year is 99.3 mm (3.9 in).

Wettest five days (Rx5day) at Millerton by year
Year	Wettest five days (Rx5day)
1893	61.5 mm (2.4 in)
1894	63.3 mm (2.5 in)
1895	72.8 mm (2.9 in)
1896	118.6 mm (4.7 in)
1897	152.2 mm (6.0 in)
1898	133.0 mm (5.2 in)
1899	99.3 mm (3.9 in)
1900	83.4 mm (3.3 in)
1901	75.7 mm (3.0 in)
1902	167.1 mm (6.6 in)
1903	215.9 mm (8.5 in)
1904	64.8 mm (2.6 in)
1905	128.2 mm (5.0 in)
1906	82.8 mm (3.3 in)
1907	65.8 mm (2.6 in)
1908	109.5 mm (4.3 in)
1909	157.0 mm (6.2 in)
1910	45.2 mm (1.8 in)
1911	108.5 mm (4.3 in)
1912	104.2 mm (4.1 in)
1913	96.3 mm (3.8 in)
1914	104.7 mm (4.1 in)
1915	154.4 mm (6.1 in)
1916	105.5 mm (4.2 in)
1917	154.1 mm (6.1 in)
1918	103.1 mm (4.1 in)
1919	209.0 mm (8.2 in)
1920	92.5 mm (3.6 in)
1921	76.9 mm (3.0 in)
1922	92.8 mm (3.7 in)
1923	58.4 mm (2.3 in)
1924	65.6 mm (2.6 in)
1925	104.2 mm (4.1 in)
1926	204.2 mm (8.0 in)
1927	68.6 mm (2.7 in)
1928	179.5 mm (7.1 in)
1929	81.2 mm (3.2 in)
1930	57.1 mm (2.2 in)
1931	118.3 mm (4.7 in)
1932	81.5 mm (3.2 in)
1933	82.9 mm (3.3 in)
1934	108.5 mm (4.3 in)
1935	125.7 mm (4.9 in)
1936	61.2 mm (2.4 in)
1937	69.9 mm (2.8 in)
1938	91.4 mm (3.6 in)
1939	110.0 mm (4.3 in)
1940	60.5 mm (2.4 in)
1941	94.7 mm (3.7 in)
1942	100.1 mm (3.9 in)
1943	94.7 mm (3.7 in)
1944	105.9 mm (4.2 in)
1945	109.2 mm (4.3 in)
1946	175.5 mm (6.9 in)
1947	39.1 mm (1.5 in)
1948	65.6 mm (2.6 in)
1949	100.8 mm (4.0 in)
1950	150.9 mm (5.9 in)
1951	24.9 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Millerton, 1893 to 1951. The record is 39 days in 1904, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Millerton by year
Year	Longest dry spell (CDD)
1893	26 days
1894	21 days
1895	29 days
1896	21 days
1897	23 days
1898	17 days
1899	23 days
1900	18 days
1901	31 days
1902	20 days
1903	19 days
1904	39 days
1905	22 days
1906	34 days
1907	39 days
1908	25 days
1909	16 days
1910	37 days
1911	18 days
1912	29 days
1913	30 days
1914	23 days
1915	21 days
1916	27 days
1917	36 days
1918	19 days
1919	32 days
1920	26 days
1921	19 days
1922	19 days
1923	18 days
1924	20 days
1925	26 days
1926	27 days
1927	18 days
1928	18 days
1929	18 days
1930	19 days
1931	31 days
1932	23 days
1933	29 days
1934	36 days
1935	18 days
1936	23 days
1937	34 days
1938	24 days
1939	21 days
1940	25 days
1941	24 days
1942	31 days
1943	27 days
1944	27 days
1945	24 days
1946	21 days
1947	20 days
1948	19 days
1949	26 days
1950	23 days
1951	16 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at Millerton falls on 28 April and the median first autumn frost on 10 October, which leaves a median of 163 days between them.

Fitted over all years, the growing season changes by +2.7 days per decade at this station.

Frost dates and growing season at Millerton
Measure	Median, all years	Earliest period	Recent period (1913 to 1948)	Recent against earliest	Fitted trend
Last spring frost	28 April	n/a	28 April	n/a	-0.3 days per decade
First autumn frost	10 October	n/a	11 October	n/a	+2.5 days per decade
Growing days	163 days	n/a	164 days	n/a	+2.7 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

52 years, 1894 to 1949

A day with at least 61.3 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 192.1 mm (7.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Millerton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.3 mm (2.4 in)
5 years	84.1 mm (3.3 in)
10 years	103.2 mm (4.1 in)
25 years	133.0 mm (5.2 in)
50 years	160.1 mm (6.3 in)
100 years	192.1 mm (7.6 in)	Longer than the 52 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, 52 years of values from 1894 to 1949.

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: 205.7 mm (8.1 in) in 1903; 142.0 mm (5.6 in) in 1926; 132.8 mm (5.2 in) in 1902.

Station Changes

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

Download the Data

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