Harlan Weather Records (USC00153622)

Record envelope, standing records and threshold days for Harlan (USC00153622), Kentucky, United States, with 35 years of record.

Key Facts for Harlan

Harlan (USC00153622) is a weather station in Kentucky, United States at 36.83 latitude and -83.32 longitude, 366 m (1,201 ft) above sea level.
The station reports from 1918 to 1952, 35 years of record.
1,464 records set at Harlan still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Kentucky, United States, 36.83 latitude, -83.32 longitude.
Elevation: 366 m (1,201 ft).
Period of record: 1918 to 1952, 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 Harlan. 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 Harlan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.3 C (73.9 F)	-19.4 C (-2.9 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-21.7 C (-7.1 F)	n/a	n/a
Mar	28.3 C (82.9 F)	-12.2 C (10.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-4.4 C (24.1 F)	n/a	n/a
May	33.9 C (93.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	40.0 C (104.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	38.9 C (102.0 F)	8.3 C (46.9 F)	n/a	n/a
Aug	40.6 C (105.1 F)	7.8 C (46.0 F)	n/a	n/a
Sep	35.6 C (96.1 F)	3.3 C (37.9 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-15.6 C (3.9 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-20.0 C (-4.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Harlan still stand. 1930 holds the most, with 160.

Wettest Day of Each Month

Jul: 98.8 mm (3.9 in)

The wettest day on record for each calendar month at Harlan. The most was 98.8 mm (3.9 in) on 14 July 1938.

Record daily precipitation for each month at Harlan
Month	Record daily precipitation (mm)	Date
Jan	97.3 mm (3.8 in)	22 January 1937
Feb	69.9 mm (2.8 in)	1 February 1951
Mar	68.6 mm (2.7 in)	17 March 1936
Apr	69.3 mm (2.7 in)	27 April 1937
May	66.5 mm (2.6 in)	24 May 1938
Jun	71.1 mm (2.8 in)	19 June 1938
Jul	98.8 mm (3.9 in)	14 July 1938
Aug	58.4 mm (2.3 in)	26 August 1934
Sep	49.3 mm (1.9 in)	4 September 1936
Oct	71.1 mm (2.8 in)	12 October 1919
Nov	50.3 mm (2.0 in)	2 November 1934
Dec	87.4 mm (3.4 in)	12 December 1936

Period of Record Coverage

1918 to 1952

18 years of record at Harlan, 1918 to 1952. 16 years have data for under 90 percent of days and are left out of rankings: 1918, 1919, 1920, 1924, 1925, 1926, 1929, 1930 and others.

Days with data per year at Harlan
Year	Days with data	Share of year	Complete
1918	110	30%	No
1919	277	76%	No
1920	29	8%	No
1924	135	37%	No
1925	206	56%	No
1926	93	25%	No
1929	180	49%	No
1930	328	90%	No
1931	331	91%	Yes
1932	361	99%	Yes
1933	327	90%	No
1934	302	83%	No
1935	285	78%	No
1936	293	80%	No
1937	316	87%	No
1938	192	53%	No
1951	184	50%	No
1952	19	5%	No

Latest Records

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

Extremes by Year

1918 to 1952

Yearly extremes at Harlan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1930	34.2 C (93.5 F)	18
Coldest night (TNn)	-21.7 C (-7.1 F)	1933	-15.3 C (4.5 F)	18
Wettest day (Rx1day)	98.8 mm (3.9 in)	1938	58.8 mm (2.3 in)	18
Wettest five days (Rx5day)	133.3 mm (5.2 in)	1932	94.2 mm (3.7 in)	17
Longest dry spell (CDD)	25 days	1931	16 days	18

Hottest day (TXx)

The hottest day of the year at Harlan, 1918 to 1952. The record is 40.6 C (105.1 F) in 1930, marked on the chart; the median year is 34.2 C (93.5 F).

Hottest day (TXx) at Harlan by year
Year	Hottest day (TXx)
1918	30.0 C (86.0 F)
1919	35.6 C (96.1 F)
1920	22.2 C (72.0 F)
1924	33.9 C (93.0 F)
1925	33.3 C (91.9 F)
1926	32.2 C (90.0 F)
1929	35.0 C (95.0 F)
1930	40.6 C (105.1 F)
1931	36.7 C (98.1 F)
1932	36.1 C (97.0 F)
1933	33.9 C (93.0 F)
1934	35.0 C (95.0 F)
1935	33.3 C (91.9 F)
1936	40.0 C (104.0 F)
1937	36.1 C (97.0 F)
1938	34.4 C (93.9 F)
1951	33.9 C (93.0 F)
1952	20.0 C (68.0 F)

Coldest night (TNn)

The coldest night of the year at Harlan, 1918 to 1952. The record is -21.7 C (-7.1 F) in 1933, marked on the chart; the median year is -15.3 C (4.5 F).

Coldest night (TNn) at Harlan by year
Year	Coldest night (TNn)
1918	-6.7 C (19.9 F)
1919	-7.8 C (18.0 F)
1920	-15.6 C (3.9 F)
1924	17.8 C (64.0 F)
1925	-20.0 C (-4.0 F)
1926	-11.1 C (12.0 F)
1929	-16.7 C (1.9 F)
1930	-15.6 C (3.9 F)
1931	-12.2 C (10.0 F)
1932	-15.0 C (5.0 F)
1933	-21.7 C (-7.1 F)
1934	-17.8 C (0.0 F)
1935	-16.7 C (1.9 F)
1936	-19.4 C (-2.9 F)
1937	-12.2 C (10.0 F)
1938	-13.3 C (8.1 F)
1951	-17.2 C (1.0 F)
1952	-7.2 C (19.0 F)

Wettest day (Rx1day)

The wettest day of the year at Harlan, 1918 to 1952. The record is 98.8 mm (3.9 in) in 1938, marked on the chart; the median year is 58.8 mm (2.3 in).

Wettest day (Rx1day) at Harlan by year
Year	Wettest day (Rx1day)
1918	59.2 mm (2.3 in)
1919	71.1 mm (2.8 in)
1920	37.6 mm (1.5 in)
1924	47.8 mm (1.9 in)
1925	18.8 mm (0.7 in)
1926	25.4 mm (1.0 in)
1929	43.2 mm (1.7 in)
1930	49.0 mm (1.9 in)
1931	59.7 mm (2.4 in)
1932	81.3 mm (3.2 in)
1933	58.4 mm (2.3 in)
1934	62.7 mm (2.5 in)
1935	55.9 mm (2.2 in)
1936	87.4 mm (3.4 in)
1937	97.3 mm (3.8 in)
1938	98.8 mm (3.9 in)
1951	69.9 mm (2.8 in)
1952	35.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Harlan, 1918 to 1952. The record is 133.3 mm (5.2 in) in 1932, marked on the chart; the median year is 94.2 mm (3.7 in).

Wettest five days (Rx5day) at Harlan by year
Year	Wettest five days (Rx5day)
1918	93.7 mm (3.7 in)
1919	131.3 mm (5.2 in)
1920	103.4 mm (4.1 in)
1924	n/a
1925	23.9 mm (0.9 in)
1926	33.0 mm (1.3 in)
1929	94.9 mm (3.7 in)
1930	67.8 mm (2.7 in)
1931	87.3 mm (3.4 in)
1932	133.3 mm (5.2 in)
1933	85.6 mm (3.4 in)
1934	130.5 mm (5.1 in)
1935	127.9 mm (5.0 in)
1936	94.2 mm (3.7 in)
1937	97.3 mm (3.8 in)
1938	91.6 mm (3.6 in)
1951	118.0 mm (4.6 in)
1952	74.2 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Harlan, 1918 to 1952. The record is 25 days in 1931, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Harlan by year
Year	Longest dry spell (CDD)
1918	15 days
1919	12 days
1920	7 days
1924	1 day
1925	21 days
1926	22 days
1929	16 days
1930	21 days
1931	25 days
1932	15 days
1933	10 days
1934	16 days
1935	20 days
1936	11 days
1937	11 days
1938	19 days
1951	17 days
1952	7 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 Harlan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Harlan 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).