Record envelope, standing records and threshold days for Harlan (USC00133632), Iowa, United States, with 118 years of record.
Key Facts for Harlan
Harlan (USC00133632) is a weather station in Iowa, United States at 41.65 latitude and -95.33 longitude, 387 m (1,270 ft) above sea level.
The station reports from 1899 to 2016, 118 years of record.
1,464 records set at Harlan still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Harlan set a daily record precipitation of 25.4 mm (1.0 in) on 3 February 2016.
About the Station
Location: Iowa, United States, 41.65 latitude, -95.33 longitude.
Elevation: 387 m (1,270 ft).
Period of record: 1899 to 2016, 118 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
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
20.0 C (68.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-38.3 C (-36.9 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-16.7 C (1.9 F)
n/a
n/a
May
41.1 C (106.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
45.6 C (114.1 F)
4.4 C (39.9 F)
n/a
n/a
Aug
43.9 C (111.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
41.1 C (106.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-17.8 C (0.0 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Harlan still stand. 1936 holds the most, with 46.
Standing records at Harlan by the year they were set
Year set
Standing records
1899
24
1900
5
1901
21
1902
20
1903
12
1904
8
1905
20
1906
9
1907
18
1908
13
1909
18
1910
16
1911
13
1912
19
1913
19
1914
9
1915
21
1916
16
1917
19
1918
22
1919
9
1920
10
1921
11
1922
8
1923
7
1924
15
1925
33
1926
11
1927
6
1928
14
1929
9
1930
28
1931
21
1932
9
1933
17
1934
31
1935
14
1936
46
1937
28
1938
23
1939
21
1940
14
1941
14
1942
17
1943
6
1944
19
1945
14
1946
17
1947
12
1948
12
1949
6
1950
11
1951
15
1952
9
1953
12
1954
6
1955
23
1956
9
1957
7
1958
7
1959
15
1960
11
1961
7
1962
13
1963
8
1964
8
1965
9
1966
10
1967
11
1968
6
1969
11
1970
11
1971
6
1972
11
1973
8
1974
5
1975
10
1976
7
1977
10
1978
6
1979
6
1980
9
1981
9
1982
4
1983
14
1984
6
1985
10
1986
11
1987
13
1988
10
1989
21
1990
10
1991
19
1992
12
1993
3
1994
5
1995
7
1996
6
1997
11
1998
15
1999
12
2000
17
2001
6
2002
7
2003
8
2004
16
2005
6
2006
12
2007
7
2008
5
2009
8
2010
4
2011
6
2012
16
2013
11
2014
13
2015
3
All-Time Record Progression
7 new records
7 all-time records were set at Harlan between 25 July 1936 and 2 March 2007. Each dot is a new record.
When Harlan set new all-time records
Date
Kind
Detail
1936-07-25
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1936-07-25
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
1952-08-29
Record daily precipitation
Record daily precipitation 130.8 mm (5.1 in)
1958-07-02
Record daily precipitation
Record daily precipitation 170.7 mm (6.7 in)
1965-02-11
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
1972-09-11
Record daily precipitation
Record daily precipitation 198.9 mm (7.8 in)
2007-03-02
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
Wettest Day of Each Month
Sep: 198.9 mm (7.8 in)
The wettest day on record for each calendar month at Harlan. The most was 198.9 mm (7.8 in) on 11 September 1972.
Record daily precipitation for each month at Harlan
Month
Record daily precipitation (mm)
Date
Jan
34.3 mm (1.4 in)
28 January 1909
Feb
40.4 mm (1.6 in)
19 February 1954
Mar
73.9 mm (2.9 in)
28 March 2004
Apr
76.2 mm (3.0 in)
19 April 1920
May
136.4 mm (5.4 in)
21 May 1962
Jun
104.1 mm (4.1 in)
30 June 2014
Jul
170.7 mm (6.7 in)
2 July 1958
Aug
130.8 mm (5.1 in)
29 August 1952
Sep
198.9 mm (7.8 in)
11 September 1972
Oct
94.0 mm (3.7 in)
11 October 1986
Nov
103.6 mm (4.1 in)
13 November 1909
Dec
55.1 mm (2.2 in)
14 December 2015
Period of Record Coverage
1899 to 2016
Complete yearUnder 90 percent of days
118 years of record at Harlan, 1899 to 2016. 3 years have data for under 90 percent of days and are left out of rankings: 1920, 2015, 2016.
Cooler than the station meanWarmer than the station mean
One stripe for each of 110 complete years at Harlan, 1900 to 2014. Blue stripes are years cooler than the station's own mean of 9.5 C (49.1 F); red stripes are warmer. The coolest year was 1912, at 7.8 C (46.0 F), and the warmest was 1931, at 11.9 C (53.4 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Harlan as warming stripes, 1900 to 2014
Year
Annual mean temperature
Difference from the station mean
1900
9.5 C
-0.05 C
1901
9.5 C
-0.03 C
1902
8.6 C
-0.96 C
1903
8.5 C
-1.06 C
1904
8.1 C
-1.39 C
1905
8.4 C
-1.10 C
1906
9.1 C
-0.40 C
1907
8.8 C
-0.71 C
1908
9.6 C
+0.08 C
1909
8.4 C
-1.13 C
1910
9.3 C
-0.26 C
1911
9.6 C
+0.11 C
1912
7.8 C
-1.72 C
1913
9.6 C
+0.10 C
1914
9.6 C
+0.10 C
1915
9.0 C
-0.55 C
1916
8.5 C
-1.00 C
1918
9.7 C
+0.20 C
1919
9.0 C
-0.53 C
1921
11.3 C
+1.78 C
1922
10.3 C
+0.82 C
1925
8.9 C
-0.58 C
1926
9.2 C
-0.30 C
1927
9.3 C
-0.19 C
1928
9.4 C
-0.12 C
1929
7.8 C
-1.71 C
1930
10.1 C
+0.62 C
1931
11.9 C
+2.40 C
1932
9.2 C
-0.35 C
1933
10.8 C
+1.28 C
1934
11.2 C
+1.65 C
1935
9.8 C
+0.30 C
1936
9.5 C
-0.02 C
1937
8.9 C
-0.62 C
1938
11.1 C
+1.59 C
1939
11.1 C
+1.54 C
1940
9.1 C
-0.44 C
1941
10.9 C
+1.37 C
1942
9.7 C
+0.20 C
1943
9.5 C
-0.02 C
1944
10.0 C
+0.46 C
1945
9.2 C
-0.29 C
1946
11.1 C
+1.58 C
1947
9.9 C
+0.39 C
1948
9.9 C
+0.40 C
1949
9.7 C
+0.15 C
1950
8.3 C
-1.18 C
1951
8.1 C
-1.37 C
1952
9.9 C
+0.37 C
1953
11.0 C
+1.49 C
1954
11.1 C
+1.59 C
1955
10.2 C
+0.68 C
1956
10.5 C
+1.02 C
1957
10.0 C
+0.49 C
1958
9.7 C
+0.14 C
1959
9.7 C
+0.17 C
1960
8.9 C
-0.59 C
1961
9.2 C
-0.33 C
1962
9.4 C
-0.08 C
1963
9.8 C
+0.27 C
1964
9.9 C
+0.37 C
1965
9.1 C
-0.46 C
1966
8.9 C
-0.66 C
1967
9.0 C
-0.51 C
1968
9.4 C
-0.15 C
1969
8.7 C
-0.81 C
1970
9.3 C
-0.22 C
1971
9.4 C
-0.11 C
1972
8.6 C
-0.92 C
1973
9.9 C
+0.36 C
1974
9.6 C
+0.08 C
1975
9.2 C
-0.30 C
1976
9.5 C
-0.05 C
1977
10.1 C
+0.58 C
1978
8.1 C
-1.44 C
1980
9.9 C
+0.38 C
1981
10.3 C
+0.76 C
1982
8.6 C
-0.92 C
1983
9.3 C
-0.26 C
1984
9.5 C
-0.01 C
1985
8.5 C
-1.00 C
1986
10.4 C
+0.85 C
1987
11.5 C
+1.94 C
1988
10.5 C
+0.98 C
1989
9.1 C
-0.41 C
1990
10.5 C
+1.03 C
1991
9.9 C
+0.43 C
1992
9.9 C
+0.34 C
1993
8.4 C
-1.14 C
1994
9.6 C
+0.11 C
1995
9.5 C
-0.01 C
1996
8.5 C
-1.03 C
1997
9.5 C
-0.02 C
1998
11.3 C
+1.78 C
1999
9.7 C
+0.14 C
2000
9.4 C
-0.11 C
2001
9.6 C
+0.04 C
2002
9.4 C
-0.12 C
2003
8.9 C
-0.57 C
2004
9.1 C
-0.40 C
2005
9.9 C
+0.43 C
2006
10.5 C
+1.01 C
2007
9.7 C
+0.20 C
2008
8.0 C
-1.51 C
2009
8.3 C
-1.25 C
2010
8.9 C
-0.59 C
2011
9.0 C
-0.56 C
2012
11.1 C
+1.55 C
2013
8.3 C
-1.18 C
2014
8.9 C
-0.57 C
The fitted trend in annual mean temperature here over 1900 to 2014 is 0.01 C (-0.04 to 0.06) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.02 F (-0.07 to 0.11) per decade. The slope is a straight line fitted to 110 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Harlan
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.04 to 0.06) per decade
0.02 F (-0.07 to 0.11) per decade
1900 to 2014
110
Not clearly different from zero
Mean daily maximum
-0.03 C (-0.09 to 0.03) per decade
-0.06 F (-0.16 to 0.05) per decade
1900 to 2014
110
Not clearly different from zero
Mean daily minimum
0.06 C (0.01 to 0.11) per decade
0.10 F (0.01 to 0.19) per decade
1900 to 2014
110
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
1899 to 2016
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)
45.6 C (114.1 F)
1936
36.1 C (97.0 F)
118
Coldest night (TNn)
-38.3 C (-36.9 F)
1905
-27.5 C (-17.5 F)
118
Wettest day (Rx1day)
198.9 mm (7.8 in)
1972
64.4 mm (2.5 in)
118
Wettest five days (Rx5day)
387.3 mm (15.2 in)
1972
96.8 mm (3.8 in)
118
Longest dry spell (CDD)
61 days
1952
28 days
118
Hottest day (TXx)
The hottest day of the year at Harlan, 1899 to 2016. The record is 45.6 C (114.1 F) in 1936, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Harlan by year
Year
Hottest day (TXx)
1899
35.6 C (96.1 F)
1900
36.7 C (98.1 F)
1901
43.9 C (111.0 F)
1902
35.0 C (95.0 F)
1903
35.0 C (95.0 F)
1904
33.9 C (93.0 F)
1905
36.1 C (97.0 F)
1906
34.4 C (93.9 F)
1907
35.6 C (96.1 F)
1908
36.1 C (97.0 F)
1909
36.7 C (98.1 F)
1910
36.1 C (97.0 F)
1911
41.1 C (106.0 F)
1912
37.2 C (99.0 F)
1913
38.9 C (102.0 F)
1914
37.2 C (99.0 F)
1915
35.6 C (96.1 F)
1916
37.8 C (100.0 F)
1917
37.8 C (100.0 F)
1918
41.7 C (107.1 F)
1919
36.1 C (97.0 F)
1920
32.8 C (91.0 F)
1921
36.1 C (97.0 F)
1922
36.1 C (97.0 F)
1923
36.1 C (97.0 F)
1924
33.9 C (93.0 F)
1925
37.8 C (100.0 F)
1926
37.8 C (100.0 F)
1927
36.1 C (97.0 F)
1928
34.4 C (93.9 F)
1929
34.4 C (93.9 F)
1930
41.1 C (106.0 F)
1931
41.1 C (106.0 F)
1932
36.1 C (97.0 F)
1933
41.7 C (107.1 F)
1934
43.9 C (111.0 F)
1935
40.6 C (105.1 F)
1936
45.6 C (114.1 F)
1937
40.0 C (104.0 F)
1938
38.9 C (102.0 F)
1939
41.1 C (106.0 F)
1940
41.1 C (106.0 F)
1941
38.9 C (102.0 F)
1942
37.8 C (100.0 F)
1943
36.7 C (98.1 F)
1944
37.8 C (100.0 F)
1945
35.6 C (96.1 F)
1946
39.4 C (102.9 F)
1947
38.3 C (100.9 F)
1948
37.8 C (100.0 F)
1949
35.0 C (95.0 F)
1950
33.9 C (93.0 F)
1951
34.4 C (93.9 F)
1952
36.1 C (97.0 F)
1953
37.8 C (100.0 F)
1954
40.0 C (104.0 F)
1955
41.1 C (106.0 F)
1956
40.6 C (105.1 F)
1957
38.3 C (100.9 F)
1958
34.4 C (93.9 F)
1959
35.6 C (96.1 F)
1960
36.1 C (97.0 F)
1961
35.6 C (96.1 F)
1962
36.1 C (97.0 F)
1963
37.2 C (99.0 F)
1964
37.2 C (99.0 F)
1965
34.4 C (93.9 F)
1966
37.2 C (99.0 F)
1967
37.8 C (100.0 F)
1968
36.7 C (98.1 F)
1969
36.7 C (98.1 F)
1970
37.2 C (99.0 F)
1971
36.7 C (98.1 F)
1972
35.0 C (95.0 F)
1973
34.4 C (93.9 F)
1974
40.0 C (104.0 F)
1975
35.6 C (96.1 F)
1976
35.6 C (96.1 F)
1977
37.2 C (99.0 F)
1978
35.6 C (96.1 F)
1979
34.4 C (93.9 F)
1980
37.8 C (100.0 F)
1981
35.6 C (96.1 F)
1982
35.0 C (95.0 F)
1983
37.2 C (99.0 F)
1984
36.1 C (97.0 F)
1985
37.8 C (100.0 F)
1986
33.9 C (93.0 F)
1987
36.7 C (98.1 F)
1988
38.9 C (102.0 F)
1989
35.0 C (95.0 F)
1990
37.2 C (99.0 F)
1991
33.9 C (93.0 F)
1992
32.8 C (91.0 F)
1993
33.9 C (93.0 F)
1994
34.4 C (93.9 F)
1995
38.3 C (100.9 F)
1996
34.4 C (93.9 F)
1997
36.1 C (97.0 F)
1998
36.1 C (97.0 F)
1999
35.0 C (95.0 F)
2000
41.1 C (106.0 F)
2001
35.6 C (96.1 F)
2002
36.7 C (98.1 F)
2003
38.9 C (102.0 F)
2004
32.2 C (90.0 F)
2005
37.8 C (100.0 F)
2006
35.6 C (96.1 F)
2007
35.0 C (95.0 F)
2008
35.0 C (95.0 F)
2009
34.4 C (93.9 F)
2010
33.9 C (93.0 F)
2011
36.7 C (98.1 F)
2012
37.8 C (100.0 F)
2013
37.2 C (99.0 F)
2014
35.6 C (96.1 F)
2015
33.3 C (91.9 F)
2016
16.1 C (61.0 F)
Coldest night (TNn)
The coldest night of the year at Harlan, 1899 to 2016. The record is -38.3 C (-36.9 F) in 1905, marked on the chart; the median year is -27.5 C (-17.5 F).
Coldest night (TNn) at Harlan by year
Year
Coldest night (TNn)
1899
-33.9 C (-29.0 F)
1900
-30.6 C (-23.1 F)
1901
-30.0 C (-22.0 F)
1902
-30.0 C (-22.0 F)
1903
-27.8 C (-18.0 F)
1904
-28.9 C (-20.0 F)
1905
-38.3 C (-36.9 F)
1906
-26.1 C (-15.0 F)
1907
-28.3 C (-18.9 F)
1908
-25.6 C (-14.1 F)
1909
-27.8 C (-18.0 F)
1910
-32.8 C (-27.0 F)
1911
-30.6 C (-23.1 F)
1912
-38.3 C (-36.9 F)
1913
-27.8 C (-18.0 F)
1914
-26.1 C (-15.0 F)
1915
-32.2 C (-26.0 F)
1916
-31.7 C (-25.1 F)
1917
-32.2 C (-26.0 F)
1918
-32.2 C (-26.0 F)
1919
-32.8 C (-27.0 F)
1920
-26.7 C (-16.1 F)
1921
-22.8 C (-9.0 F)
1922
-22.8 C (-9.0 F)
1923
-25.6 C (-14.1 F)
1924
-33.3 C (-27.9 F)
1925
-25.0 C (-13.0 F)
1926
-23.3 C (-9.9 F)
1927
-26.1 C (-15.0 F)
1928
-25.0 C (-13.0 F)
1929
-27.8 C (-18.0 F)
1930
-31.7 C (-25.1 F)
1931
-20.6 C (-5.1 F)
1932
-30.6 C (-23.1 F)
1933
-31.1 C (-24.0 F)
1934
-25.0 C (-13.0 F)
1935
-25.6 C (-14.1 F)
1936
-32.2 C (-26.0 F)
1937
-32.2 C (-26.0 F)
1938
-26.1 C (-15.0 F)
1939
-24.4 C (-11.9 F)
1940
-30.6 C (-23.1 F)
1941
-17.8 C (0.0 F)
1942
-31.1 C (-24.0 F)
1943
-29.4 C (-20.9 F)
1944
-28.9 C (-20.0 F)
1945
-25.0 C (-13.0 F)
1946
-25.6 C (-14.1 F)
1947
-29.4 C (-20.9 F)
1948
-29.4 C (-20.9 F)
1949
-26.7 C (-16.1 F)
1950
-28.9 C (-20.0 F)
1951
-27.2 C (-17.0 F)
1952
-21.7 C (-7.1 F)
1953
-24.4 C (-11.9 F)
1954
-26.1 C (-15.0 F)
1955
-27.8 C (-18.0 F)
1956
-23.3 C (-9.9 F)
1957
-29.4 C (-20.9 F)
1958
-31.7 C (-25.1 F)
1959
-25.6 C (-14.1 F)
1960
-30.6 C (-23.1 F)
1961
-26.1 C (-15.0 F)
1962
-30.0 C (-22.0 F)
1963
-29.4 C (-20.9 F)
1964
-24.4 C (-11.9 F)
1965
-27.8 C (-18.0 F)
1966
-30.6 C (-23.1 F)
1967
-26.7 C (-16.1 F)
1968
-30.0 C (-22.0 F)
1969
-27.2 C (-17.0 F)
1970
-32.8 C (-27.0 F)
1971
-30.0 C (-22.0 F)
1972
-28.3 C (-18.9 F)
1973
-26.7 C (-16.1 F)
1974
-33.9 C (-29.0 F)
1975
-31.1 C (-24.0 F)
1976
-27.8 C (-18.0 F)
1977
-28.9 C (-20.0 F)
1978
-27.2 C (-17.0 F)
1979
-27.2 C (-17.0 F)
1980
-26.7 C (-16.1 F)
1981
-30.0 C (-22.0 F)
1982
-31.1 C (-24.0 F)
1983
-31.7 C (-25.1 F)
1984
-25.6 C (-14.1 F)
1985
-28.9 C (-20.0 F)
1986
-27.8 C (-18.0 F)
1987
-23.3 C (-9.9 F)
1988
-28.9 C (-20.0 F)
1989
-32.2 C (-26.0 F)
1990
-27.2 C (-17.0 F)
1991
-25.6 C (-14.1 F)
1992
-22.8 C (-9.0 F)
1993
-23.3 C (-9.9 F)
1994
-26.7 C (-16.1 F)
1995
-24.4 C (-11.9 F)
1996
-31.7 C (-25.1 F)
1997
-28.3 C (-18.9 F)
1998
-25.0 C (-13.0 F)
1999
-27.2 C (-17.0 F)
2000
-26.1 C (-15.0 F)
2001
-26.1 C (-15.0 F)
2002
-21.7 C (-7.1 F)
2003
-25.0 C (-13.0 F)
2004
-25.0 C (-13.0 F)
2005
-24.4 C (-11.9 F)
2006
-23.3 C (-9.9 F)
2007
-25.0 C (-13.0 F)
2008
-25.6 C (-14.1 F)
2009
-30.0 C (-22.0 F)
2010
-28.3 C (-18.9 F)
2011
-26.1 C (-15.0 F)
2012
-21.1 C (-6.0 F)
2013
-23.9 C (-11.0 F)
2014
-25.6 C (-14.1 F)
2015
-24.4 C (-11.9 F)
2016
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Harlan, 1899 to 2016. The record is 198.9 mm (7.8 in) in 1972, marked on the chart; the median year is 64.4 mm (2.5 in).
Wettest day (Rx1day) at Harlan by year
Year
Wettest day (Rx1day)
1899
68.8 mm (2.7 in)
1900
90.2 mm (3.6 in)
1901
51.8 mm (2.0 in)
1902
86.9 mm (3.4 in)
1903
75.2 mm (3.0 in)
1904
53.6 mm (2.1 in)
1905
49.0 mm (1.9 in)
1906
59.7 mm (2.4 in)
1907
39.6 mm (1.6 in)
1908
52.3 mm (2.1 in)
1909
103.6 mm (4.1 in)
1910
112.3 mm (4.4 in)
1911
81.3 mm (3.2 in)
1912
90.4 mm (3.6 in)
1913
45.2 mm (1.8 in)
1914
62.0 mm (2.4 in)
1915
49.5 mm (1.9 in)
1916
55.6 mm (2.2 in)
1917
61.0 mm (2.4 in)
1918
63.5 mm (2.5 in)
1919
64.0 mm (2.5 in)
1920
76.2 mm (3.0 in)
1921
82.6 mm (3.3 in)
1922
96.5 mm (3.8 in)
1923
61.0 mm (2.4 in)
1924
54.6 mm (2.1 in)
1925
50.8 mm (2.0 in)
1926
102.9 mm (4.1 in)
1927
57.9 mm (2.3 in)
1928
41.9 mm (1.6 in)
1929
34.5 mm (1.4 in)
1930
39.6 mm (1.6 in)
1931
69.6 mm (2.7 in)
1932
47.5 mm (1.9 in)
1933
76.5 mm (3.0 in)
1934
78.7 mm (3.1 in)
1935
72.6 mm (2.9 in)
1936
97.0 mm (3.8 in)
1937
40.6 mm (1.6 in)
1938
59.7 mm (2.4 in)
1939
66.3 mm (2.6 in)
1940
105.4 mm (4.1 in)
1941
64.8 mm (2.6 in)
1942
61.0 mm (2.4 in)
1943
57.7 mm (2.3 in)
1944
56.1 mm (2.2 in)
1945
77.5 mm (3.1 in)
1946
68.8 mm (2.7 in)
1947
91.2 mm (3.6 in)
1948
67.3 mm (2.6 in)
1949
32.3 mm (1.3 in)
1950
83.8 mm (3.3 in)
1951
65.5 mm (2.6 in)
1952
130.8 mm (5.1 in)
1953
32.5 mm (1.3 in)
1954
58.2 mm (2.3 in)
1955
58.2 mm (2.3 in)
1956
85.6 mm (3.4 in)
1957
37.6 mm (1.5 in)
1958
170.7 mm (6.7 in)
1959
61.0 mm (2.4 in)
1960
39.1 mm (1.5 in)
1961
94.7 mm (3.7 in)
1962
136.4 mm (5.4 in)
1963
38.6 mm (1.5 in)
1964
63.5 mm (2.5 in)
1965
55.1 mm (2.2 in)
1966
69.3 mm (2.7 in)
1967
70.1 mm (2.8 in)
1968
50.0 mm (2.0 in)
1969
44.5 mm (1.8 in)
1970
44.7 mm (1.8 in)
1971
62.0 mm (2.4 in)
1972
198.9 mm (7.8 in)
1973
142.0 mm (5.6 in)
1974
45.5 mm (1.8 in)
1975
76.5 mm (3.0 in)
1976
40.9 mm (1.6 in)
1977
69.1 mm (2.7 in)
1978
192.0 mm (7.6 in)
1979
68.8 mm (2.7 in)
1980
70.6 mm (2.8 in)
1981
67.1 mm (2.6 in)
1982
72.4 mm (2.9 in)
1983
39.4 mm (1.6 in)
1984
37.6 mm (1.5 in)
1985
88.4 mm (3.5 in)
1986
94.0 mm (3.7 in)
1987
68.8 mm (2.7 in)
1988
62.7 mm (2.5 in)
1989
163.3 mm (6.4 in)
1990
35.1 mm (1.4 in)
1991
50.3 mm (2.0 in)
1992
65.5 mm (2.6 in)
1993
46.0 mm (1.8 in)
1994
55.9 mm (2.2 in)
1995
36.8 mm (1.4 in)
1996
132.3 mm (5.2 in)
1997
46.2 mm (1.8 in)
1998
69.9 mm (2.8 in)
1999
68.8 mm (2.7 in)
2000
51.1 mm (2.0 in)
2001
96.0 mm (3.8 in)
2002
37.8 mm (1.5 in)
2003
56.9 mm (2.2 in)
2004
73.9 mm (2.9 in)
2005
32.0 mm (1.3 in)
2006
90.2 mm (3.6 in)
2007
97.0 mm (3.8 in)
2008
65.0 mm (2.6 in)
2009
75.2 mm (3.0 in)
2010
59.9 mm (2.4 in)
2011
70.1 mm (2.8 in)
2012
61.2 mm (2.4 in)
2013
63.5 mm (2.5 in)
2014
104.1 mm (4.1 in)
2015
86.9 mm (3.4 in)
2016
25.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Harlan, 1899 to 2016. The record is 387.3 mm (15.2 in) in 1972, marked on the chart; the median year is 96.8 mm (3.8 in).
Wettest five days (Rx5day) at Harlan by year
Year
Wettest five days (Rx5day)
1899
122.3 mm (4.8 in)
1900
132.4 mm (5.2 in)
1901
96.0 mm (3.8 in)
1902
175.6 mm (6.9 in)
1903
114.1 mm (4.5 in)
1904
72.4 mm (2.9 in)
1905
72.9 mm (2.9 in)
1906
90.3 mm (3.6 in)
1907
68.1 mm (2.7 in)
1908
82.8 mm (3.3 in)
1909
160.5 mm (6.3 in)
1910
159.6 mm (6.3 in)
1911
91.2 mm (3.6 in)
1912
117.1 mm (4.6 in)
1913
61.8 mm (2.4 in)
1914
115.4 mm (4.5 in)
1915
124.4 mm (4.9 in)
1916
72.4 mm (2.9 in)
1917
149.4 mm (5.9 in)
1918
104.7 mm (4.1 in)
1919
102.1 mm (4.0 in)
1920
118.4 mm (4.7 in)
1921
119.4 mm (4.7 in)
1922
172.7 mm (6.8 in)
1923
124.5 mm (4.9 in)
1924
107.5 mm (4.2 in)
1925
63.6 mm (2.5 in)
1926
106.9 mm (4.2 in)
1927
73.4 mm (2.9 in)
1928
77.8 mm (3.1 in)
1929
54.4 mm (2.1 in)
1930
79.4 mm (3.1 in)
1931
79.0 mm (3.1 in)
1932
56.2 mm (2.2 in)
1933
101.7 mm (4.0 in)
1934
111.8 mm (4.4 in)
1935
84.0 mm (3.3 in)
1936
134.3 mm (5.3 in)
1937
67.0 mm (2.6 in)
1938
73.9 mm (2.9 in)
1939
106.4 mm (4.2 in)
1940
106.9 mm (4.2 in)
1941
81.2 mm (3.2 in)
1942
61.0 mm (2.4 in)
1943
97.9 mm (3.9 in)
1944
101.0 mm (4.0 in)
1945
79.5 mm (3.1 in)
1946
97.6 mm (3.8 in)
1947
116.0 mm (4.6 in)
1948
84.8 mm (3.3 in)
1949
77.5 mm (3.1 in)
1950
134.6 mm (5.3 in)
1951
107.4 mm (4.2 in)
1952
141.5 mm (5.6 in)
1953
72.9 mm (2.9 in)
1954
94.5 mm (3.7 in)
1955
76.0 mm (3.0 in)
1956
128.7 mm (5.1 in)
1957
86.1 mm (3.4 in)
1958
193.5 mm (7.6 in)
1959
119.3 mm (4.7 in)
1960
84.6 mm (3.3 in)
1961
153.4 mm (6.0 in)
1962
149.9 mm (5.9 in)
1963
66.3 mm (2.6 in)
1964
99.6 mm (3.9 in)
1965
91.9 mm (3.6 in)
1966
83.3 mm (3.3 in)
1967
135.4 mm (5.3 in)
1968
76.0 mm (3.0 in)
1969
72.7 mm (2.9 in)
1970
83.6 mm (3.3 in)
1971
105.9 mm (4.2 in)
1972
387.3 mm (15.2 in)
1973
179.1 mm (7.1 in)
1974
117.5 mm (4.6 in)
1975
106.8 mm (4.2 in)
1976
62.2 mm (2.4 in)
1977
107.2 mm (4.2 in)
1978
217.6 mm (8.6 in)
1979
79.5 mm (3.1 in)
1980
94.9 mm (3.7 in)
1981
87.6 mm (3.4 in)
1982
90.9 mm (3.6 in)
1983
74.5 mm (2.9 in)
1984
88.4 mm (3.5 in)
1985
128.3 mm (5.1 in)
1986
95.6 mm (3.8 in)
1987
86.8 mm (3.4 in)
1988
64.0 mm (2.5 in)
1989
249.2 mm (9.8 in)
1990
113.9 mm (4.5 in)
1991
80.8 mm (3.2 in)
1992
98.0 mm (3.9 in)
1993
81.8 mm (3.2 in)
1994
87.4 mm (3.4 in)
1995
69.4 mm (2.7 in)
1996
137.4 mm (5.4 in)
1997
75.2 mm (3.0 in)
1998
107.0 mm (4.2 in)
1999
82.5 mm (3.2 in)
2000
67.3 mm (2.6 in)
2001
108.5 mm (4.3 in)
2002
67.8 mm (2.7 in)
2003
73.5 mm (2.9 in)
2004
143.9 mm (5.7 in)
2005
76.0 mm (3.0 in)
2006
126.8 mm (5.0 in)
2007
126.4 mm (5.0 in)
2008
132.3 mm (5.2 in)
2009
78.0 mm (3.1 in)
2010
116.3 mm (4.6 in)
2011
123.9 mm (4.9 in)
2012
84.3 mm (3.3 in)
2013
70.9 mm (2.8 in)
2014
143.4 mm (5.6 in)
2015
106.4 mm (4.2 in)
2016
10.4 mm (0.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Harlan, 1899 to 2016. The record is 61 days in 1952, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Harlan by year
Year
Longest dry spell (CDD)
1899
24 days
1900
29 days
1901
36 days
1902
19 days
1903
33 days
1904
30 days
1905
29 days
1906
29 days
1907
25 days
1908
25 days
1909
18 days
1910
40 days
1911
23 days
1912
26 days
1913
28 days
1914
36 days
1915
21 days
1916
22 days
1917
38 days
1918
35 days
1919
23 days
1920
34 days
1921
53 days
1922
31 days
1923
26 days
1924
52 days
1925
27 days
1926
37 days
1927
25 days
1928
36 days
1929
26 days
1930
28 days
1931
26 days
1932
30 days
1933
28 days
1934
34 days
1935
24 days
1936
27 days
1937
29 days
1938
45 days
1939
41 days
1940
20 days
1941
21 days
1942
31 days
1943
30 days
1944
26 days
1945
24 days
1946
47 days
1947
29 days
1948
21 days
1949
48 days
1950
32 days
1951
34 days
1952
61 days
1953
24 days
1954
31 days
1955
28 days
1956
28 days
1957
37 days
1958
40 days
1959
15 days
1960
29 days
1961
23 days
1962
30 days
1963
26 days
1964
20 days
1965
21 days
1966
47 days
1967
46 days
1968
26 days
1969
35 days
1970
25 days
1971
25 days
1972
22 days
1973
27 days
1974
29 days
1975
23 days
1976
35 days
1977
17 days
1978
29 days
1979
39 days
1980
24 days
1981
30 days
1982
16 days
1983
21 days
1984
17 days
1985
19 days
1986
33 days
1987
57 days
1988
44 days
1989
28 days
1990
20 days
1991
23 days
1992
23 days
1993
22 days
1994
41 days
1995
21 days
1996
25 days
1997
25 days
1998
49 days
1999
25 days
2000
19 days
2001
31 days
2002
35 days
2003
35 days
2004
20 days
2005
30 days
2006
26 days
2007
22 days
2008
19 days
2009
24 days
2010
29 days
2011
21 days
2012
33 days
2013
42 days
2014
24 days
2015
47 days
2016
11 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
110 years with a frost
Across 110 years with a frost, the median last spring frost at Harlan falls on 2 May and the median first autumn frost on 4 October, which leaves a median of 156 days between them.
In 1985 to 2014 the median growing season was 166 days. That is 22 days more than in 1900 to 1933.
Fitted over all years, the growing season changes by +2.0 days per decade at this station.
Frost dates and growing season at Harlan
Measure
Median, all years
Earliest period (1900 to 1933)
Recent period (1985 to 2014)
Recent against earliest
Fitted trend
Last spring frost
2 May
9 May
26 April
13 days earlier
-1.2 days per decade
First autumn frost
4 October
29 September
7 October
8 days later
+0.7 days per decade
Growing days
156 days
144 days
166 days
22 days more
+2.0 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
111 years, 1900 to 2014
A day with at least 63.6 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 187.6 mm (7.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Harlan: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.6 mm (2.5 in)
5 years
89.1 mm (3.5 in)
10 years
108.7 mm (4.3 in)
25 years
137.0 mm (5.4 in)
50 years
161.0 mm (6.3 in)
100 years
187.6 mm (7.4 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 111 years of values from 1900 to 2014.
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: 198.9 mm (7.8 in) in 1972; 192.0 mm (7.6 in) in 1978; 170.7 mm (6.7 in) in 1958.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.