Record envelope, standing records and threshold days for Hillsboro 3 N (USC00324203), North Dakota, United States, with 109 years of record.
Key Facts for Hillsboro 3 N
Hillsboro 3 N (USC00324203) is a weather station in North Dakota, United States at 47.44 latitude and -97.07 longitude, 277 m (910 ft) above sea level.
The station reports from 1905 to 2013, 109 years of record.
1,464 records set at Hillsboro 3 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hillsboro 3 N tied a daily record low minimum temperature of 7.8 C (46.0 F) on 28 July 2013.
About the Station
Location: North Dakota, United States, 47.44 latitude, -97.07 longitude.
Elevation: 277 m (910 ft).
Period of record: 1905 to 2013, 109 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 Hillsboro 3 N. 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 Hillsboro 3 N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
18.3 C (64.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Mar
27.8 C (82.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Apr
37.2 C (99.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
40.6 C (105.1 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
40.6 C (105.1 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
46.1 C (115.0 F)
3.9 C (39.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-7.2 C (19.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-21.7 C (-7.1 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-33.9 C (-29.0 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hillsboro 3 N still stand. 1936 holds the most, with 51.
Standing records at Hillsboro 3 N by the year they were set
Year set
Standing records
1905
1
1906
13
1907
20
1908
14
1909
14
1910
28
1911
13
1912
17
1913
20
1914
22
1915
14
1916
21
1917
39
1918
22
1919
34
1920
10
1921
12
1922
10
1923
12
1924
19
1925
14
1926
10
1927
10
1928
17
1929
15
1930
17
1931
31
1932
20
1933
14
1934
18
1935
22
1936
51
1937
11
1938
3
1939
9
1940
15
1941
10
1942
24
1943
12
1944
14
1945
13
1946
12
1947
22
1948
13
1949
4
1950
22
1951
13
1952
21
1953
14
1954
13
1955
14
1956
18
1957
3
1958
13
1959
14
1960
5
1961
5
1962
17
1963
12
1964
16
1965
7
1966
12
1967
16
1968
10
1969
14
1970
9
1971
3
1972
11
1973
7
1974
11
1975
9
1976
11
1977
7
1978
11
1979
11
1980
9
1981
11
1982
5
1983
16
1984
11
1985
13
1986
12
1987
7
1988
8
1989
12
1990
19
1991
17
1992
20
1993
7
1994
13
1995
13
1996
10
1997
11
1998
8
1999
14
2000
17
2001
10
2002
2
2003
5
2004
10
2005
10
2006
12
2007
15
2008
3
2009
6
2010
3
2011
10
2012
20
All-Time Record Progression
5 new records
5 all-time records were set at Hillsboro 3 N between 23 January 1936 and 2 February 1996. Each dot is a new record.
When Hillsboro 3 N set new all-time records
Date
Kind
Detail
1936-01-23
Record low maximum temperature
Record low maximum temperature -31.7 C (-25.1 F)
1936-07-06
Record high maximum temperature
Record high maximum temperature 46.1 C (115.0 F)
1954-07-11
Record high minimum temperature
Record high minimum temperature 26.1 C (79.0 F)
1987-07-21
Record daily precipitation
Record daily precipitation 162.1 mm (6.4 in)
1996-02-02
Record low maximum temperature
Record low maximum temperature -32.8 C (-27.0 F)
Wettest Day of Each Month
Jul: 162.1 mm (6.4 in)
The wettest day on record for each calendar month at Hillsboro 3 N. The most was 162.1 mm (6.4 in) on 21 July 1987.
Record daily precipitation for each month at Hillsboro 3 N
Month
Record daily precipitation (mm)
Date
Jan
23.6 mm (0.9 in)
25 January 2004
Feb
36.8 mm (1.4 in)
26 February 2000
Mar
45.7 mm (1.8 in)
22 March 2011
Apr
48.0 mm (1.9 in)
21 April 1964
May
149.9 mm (5.9 in)
29 May 1909
Jun
137.2 mm (5.4 in)
6 June 1939
Jul
162.1 mm (6.4 in)
21 July 1987
Aug
67.3 mm (2.6 in)
6 August 1919
Sep
131.6 mm (5.2 in)
2 September 1957
Oct
66.5 mm (2.6 in)
11 October 1961
Nov
48.8 mm (1.9 in)
19 November 1998
Dec
40.6 mm (1.6 in)
30 December 2008
Period of Record Coverage
1905 to 2013
Complete yearUnder 90 percent of days
109 years of record at Hillsboro 3 N, 1905 to 2013. 15 years have data for under 90 percent of days and are left out of rankings: 1905, 1928, 1939, 1940, 1982, 1984, 1985, 2001 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 85 complete years at Hillsboro 3 N, 1906 to 2011. Blue stripes are years cooler than the station's own mean of 4.9 C (40.8 F); red stripes are warmer. The coolest year was 1950, at 2.0 C (35.6 F), and the warmest was 1987, at 7.4 C (45.3 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Hillsboro 3 N as warming stripes, 1906 to 2011
Year
Annual mean temperature
Difference from the station mean
1906
4.6 C
-0.28 C
1907
3.2 C
-1.70 C
1908
5.4 C
+0.53 C
1910
5.6 C
+0.71 C
1911
4.4 C
-0.48 C
1912
4.4 C
-0.51 C
1913
5.0 C
+0.17 C
1914
4.9 C
+0.02 C
1915
5.1 C
+0.19 C
1916
2.6 C
-2.29 C
1917
2.2 C
-2.70 C
1918
4.7 C
-0.14 C
1919
3.6 C
-1.26 C
1920
4.2 C
-0.68 C
1921
5.7 C
+0.80 C
1922
4.7 C
-0.19 C
1923
4.7 C
-0.22 C
1924
4.2 C
-0.69 C
1925
5.2 C
+0.31 C
1926
4.9 C
+0.07 C
1927
4.5 C
-0.35 C
1929
4.0 C
-0.85 C
1931
6.8 C
+1.93 C
1932
4.6 C
-0.24 C
1933
4.7 C
-0.16 C
1934
6.0 C
+1.13 C
1935
4.3 C
-0.54 C
1936
3.7 C
-1.17 C
1937
3.6 C
-1.25 C
1938
5.4 C
+0.57 C
1941
6.1 C
+1.19 C
1942
5.4 C
+0.54 C
1943
4.7 C
-0.19 C
1944
5.6 C
+0.77 C
1945
4.5 C
-0.42 C
1946
5.1 C
+0.23 C
1947
5.0 C
+0.14 C
1949
4.7 C
-0.21 C
1950
2.0 C
-2.86 C
1951
2.8 C
-2.06 C
1952
5.4 C
+0.57 C
1953
6.2 C
+1.36 C
1954
5.6 C
+0.69 C
1955
4.8 C
-0.11 C
1956
4.3 C
-0.58 C
1957
5.5 C
+0.58 C
1958
5.7 C
+0.85 C
1959
5.4 C
+0.49 C
1960
5.0 C
+0.11 C
1961
5.8 C
+0.88 C
1962
4.8 C
-0.06 C
1963
6.3 C
+1.44 C
1965
4.0 C
-0.91 C
1966
3.9 C
-0.98 C
1967
4.6 C
-0.26 C
1968
5.4 C
+0.52 C
1969
4.7 C
-0.20 C
1970
4.4 C
-0.45 C
1971
4.8 C
-0.03 C
1972
4.0 C
-0.86 C
1973
6.4 C
+1.49 C
1974
5.0 C
+0.15 C
1975
5.3 C
+0.47 C
1976
5.9 C
+1.00 C
1978
4.6 C
-0.29 C
1979
3.5 C
-1.37 C
1980
5.6 C
+0.68 C
1981
5.2 C
+0.32 C
1987
7.4 C
+2.52 C
1988
5.2 C
+0.31 C
1989
3.8 C
-1.04 C
1990
6.0 C
+1.16 C
1991
5.9 C
+1.01 C
1992
4.6 C
-0.23 C
1993
3.2 C
-1.66 C
1994
4.5 C
-0.35 C
1995
4.3 C
-0.59 C
1996
2.8 C
-2.10 C
1997
4.1 C
-0.73 C
1998
7.1 C
+2.21 C
1999
6.3 C
+1.40 C
2000
5.5 C
+0.64 C
2004
5.2 C
+0.34 C
2006
7.4 C
+2.51 C
2011
6.4 C
+1.50 C
The annual mean temperature here has risen by 0.10 C (0.02 to 0.17) per decade over 1906 to 2011. In Fahrenheit: 0.17 F (0.03 to 0.31) per decade. The slope is a straight line fitted to 85 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hillsboro 3 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.10 C (0.02 to 0.17) per decade
0.17 F (0.03 to 0.31) per decade
1906 to 2011
85
Rise
Mean daily maximum
0.05 C (-0.03 to 0.13) per decade
0.1 F (-0.1 to 0.2) per decade
1906 to 2011
85
Not clearly different from zero
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1906 to 2011
85
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
1905 to 2013
Yearly extremes at Hillsboro 3 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1936
36.7 C (98.1 F)
109
Coldest night (TNn)
-40.0 C (-40.0 F)
1916
-33.3 C (-27.9 F)
109
Wettest day (Rx1day)
162.1 mm (6.4 in)
1987
47.0 mm (1.9 in)
109
Wettest five days (Rx5day)
202.9 mm (8.0 in)
1987
68.8 mm (2.7 in)
108
Longest dry spell (CDD)
69 days
1912
30 days
109
Hottest day (TXx)
The hottest day of the year at Hillsboro 3 N, 1905 to 2013. The record is 46.1 C (115.0 F) in 1936, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Hillsboro 3 N by year
Year
Hottest day (TXx)
1905
16.1 C (61.0 F)
1906
37.2 C (99.0 F)
1907
35.0 C (95.0 F)
1908
35.0 C (95.0 F)
1909
33.9 C (93.0 F)
1910
36.7 C (98.1 F)
1911
35.0 C (95.0 F)
1912
35.6 C (96.1 F)
1913
36.7 C (98.1 F)
1914
34.4 C (93.9 F)
1915
32.8 C (91.0 F)
1916
33.9 C (93.0 F)
1917
41.1 C (106.0 F)
1918
37.2 C (99.0 F)
1919
33.9 C (93.0 F)
1920
36.7 C (98.1 F)
1921
35.6 C (96.1 F)
1922
37.2 C (99.0 F)
1923
34.4 C (93.9 F)
1924
34.4 C (93.9 F)
1925
38.3 C (100.9 F)
1926
35.0 C (95.0 F)
1927
36.7 C (98.1 F)
1928
34.4 C (93.9 F)
1929
40.6 C (105.1 F)
1930
38.3 C (100.9 F)
1931
39.4 C (102.9 F)
1932
39.4 C (102.9 F)
1933
40.6 C (105.1 F)
1934
40.6 C (105.1 F)
1935
37.8 C (100.0 F)
1936
46.1 C (115.0 F)
1937
37.2 C (99.0 F)
1938
37.2 C (99.0 F)
1939
38.3 C (100.9 F)
1940
38.9 C (102.0 F)
1941
37.8 C (100.0 F)
1942
35.6 C (96.1 F)
1943
35.6 C (96.1 F)
1944
35.0 C (95.0 F)
1945
37.8 C (100.0 F)
1946
37.2 C (99.0 F)
1947
41.1 C (106.0 F)
1948
37.8 C (100.0 F)
1949
37.8 C (100.0 F)
1950
37.8 C (100.0 F)
1951
37.2 C (99.0 F)
1952
36.7 C (98.1 F)
1953
35.6 C (96.1 F)
1954
36.1 C (97.0 F)
1955
37.8 C (100.0 F)
1956
36.1 C (97.0 F)
1957
36.7 C (98.1 F)
1958
38.3 C (100.9 F)
1959
37.8 C (100.0 F)
1960
36.1 C (97.0 F)
1961
37.2 C (99.0 F)
1962
35.0 C (95.0 F)
1963
36.7 C (98.1 F)
1964
37.2 C (99.0 F)
1965
40.0 C (104.0 F)
1966
35.6 C (96.1 F)
1967
35.0 C (95.0 F)
1968
36.7 C (98.1 F)
1969
36.1 C (97.0 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
35.0 C (95.0 F)
1973
36.1 C (97.0 F)
1974
37.8 C (100.0 F)
1975
37.8 C (100.0 F)
1976
39.4 C (102.9 F)
1977
36.1 C (97.0 F)
1978
38.9 C (102.0 F)
1979
35.0 C (95.0 F)
1980
40.0 C (104.0 F)
1981
36.1 C (97.0 F)
1982
36.7 C (98.1 F)
1983
41.1 C (106.0 F)
1984
38.9 C (102.0 F)
1985
36.7 C (98.1 F)
1986
36.1 C (97.0 F)
1987
37.8 C (100.0 F)
1988
41.1 C (106.0 F)
1989
40.0 C (104.0 F)
1990
37.2 C (99.0 F)
1991
36.7 C (98.1 F)
1992
34.4 C (93.9 F)
1993
34.4 C (93.9 F)
1994
32.2 C (90.0 F)
1995
37.2 C (99.0 F)
1996
34.4 C (93.9 F)
1997
34.4 C (93.9 F)
1998
35.0 C (95.0 F)
1999
34.4 C (93.9 F)
2000
35.0 C (95.0 F)
2001
36.7 C (98.1 F)
2002
34.4 C (93.9 F)
2003
38.9 C (102.0 F)
2004
32.8 C (91.0 F)
2005
35.0 C (95.0 F)
2006
37.2 C (99.0 F)
2007
35.6 C (96.1 F)
2008
32.8 C (91.0 F)
2009
35.6 C (96.1 F)
2010
35.6 C (96.1 F)
2011
34.4 C (93.9 F)
2012
34.4 C (93.9 F)
2013
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Hillsboro 3 N, 1905 to 2013. The record is -40.0 C (-40.0 F) in 1916, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at Hillsboro 3 N by year
Year
Coldest night (TNn)
1905
-33.9 C (-29.0 F)
1906
-35.6 C (-32.1 F)
1907
-38.9 C (-38.0 F)
1908
-33.9 C (-29.0 F)
1909
-36.7 C (-34.1 F)
1910
-31.1 C (-24.0 F)
1911
-33.3 C (-27.9 F)
1912
-38.9 C (-38.0 F)
1913
-39.4 C (-38.9 F)
1914
-37.8 C (-36.0 F)
1915
-37.8 C (-36.0 F)
1916
-40.0 C (-40.0 F)
1917
-37.8 C (-36.0 F)
1918
-36.1 C (-33.0 F)
1919
-37.8 C (-36.0 F)
1920
-33.9 C (-29.0 F)
1921
-32.2 C (-26.0 F)
1922
-36.1 C (-33.0 F)
1923
-34.4 C (-29.9 F)
1924
-36.7 C (-34.1 F)
1925
-31.1 C (-24.0 F)
1926
-30.0 C (-22.0 F)
1927
-32.8 C (-27.0 F)
1928
-30.0 C (-22.0 F)
1929
-34.4 C (-29.9 F)
1930
-35.0 C (-31.0 F)
1931
-26.1 C (-15.0 F)
1932
-31.7 C (-25.1 F)
1933
-36.7 C (-34.1 F)
1934
-33.3 C (-27.9 F)
1935
-36.1 C (-33.0 F)
1936
-40.0 C (-40.0 F)
1937
-35.6 C (-32.1 F)
1938
-32.2 C (-26.0 F)
1939
-37.8 C (-36.0 F)
1940
-29.4 C (-20.9 F)
1941
-32.8 C (-27.0 F)
1942
-31.1 C (-24.0 F)
1943
-34.4 C (-29.9 F)
1944
-33.3 C (-27.9 F)
1945
-31.7 C (-25.1 F)
1946
-33.9 C (-29.0 F)
1947
-32.2 C (-26.0 F)
1948
-38.9 C (-38.0 F)
1949
-32.2 C (-26.0 F)
1950
-36.7 C (-34.1 F)
1951
-36.7 C (-34.1 F)
1952
-36.7 C (-34.1 F)
1953
-28.9 C (-20.0 F)
1954
-35.6 C (-32.1 F)
1955
-34.4 C (-29.9 F)
1956
-35.0 C (-31.0 F)
1957
-32.8 C (-27.0 F)
1958
-30.0 C (-22.0 F)
1959
-32.2 C (-26.0 F)
1960
-30.6 C (-23.1 F)
1961
-32.8 C (-27.0 F)
1962
-35.6 C (-32.1 F)
1963
-32.8 C (-27.0 F)
1964
-32.8 C (-27.0 F)
1965
-33.9 C (-29.0 F)
1966
-35.6 C (-32.1 F)
1967
-34.4 C (-29.9 F)
1968
-36.7 C (-34.1 F)
1969
-32.8 C (-27.0 F)
1970
-37.2 C (-35.0 F)
1971
-33.9 C (-29.0 F)
1972
-37.2 C (-35.0 F)
1973
-33.9 C (-29.0 F)
1974
-32.8 C (-27.0 F)
1975
-31.1 C (-24.0 F)
1976
-31.7 C (-25.1 F)
1977
-36.1 C (-33.0 F)
1978
-32.8 C (-27.0 F)
1979
-34.4 C (-29.9 F)
1980
-31.7 C (-25.1 F)
1981
-30.0 C (-22.0 F)
1982
-33.9 C (-29.0 F)
1983
-33.9 C (-29.0 F)
1984
-33.3 C (-27.9 F)
1985
-33.3 C (-27.9 F)
1986
-31.7 C (-25.1 F)
1987
-28.3 C (-18.9 F)
1988
-32.8 C (-27.0 F)
1989
-33.9 C (-29.0 F)
1990
-33.3 C (-27.9 F)
1991
-28.9 C (-20.0 F)
1992
-29.4 C (-20.9 F)
1993
-31.1 C (-24.0 F)
1994
-37.2 C (-35.0 F)
1995
-28.3 C (-18.9 F)
1996
-38.3 C (-36.9 F)
1997
-35.6 C (-32.1 F)
1998
-27.2 C (-17.0 F)
1999
-30.6 C (-23.1 F)
2000
-28.3 C (-18.9 F)
2001
-28.3 C (-18.9 F)
2002
0.6 C (33.1 F)
2003
-22.8 C (-9.0 F)
2004
-37.2 C (-35.0 F)
2005
-33.3 C (-27.9 F)
2006
-29.4 C (-20.9 F)
2007
-27.2 C (-17.0 F)
2008
-33.3 C (-27.9 F)
2009
-32.8 C (-27.0 F)
2010
-33.3 C (-27.9 F)
2011
-30.0 C (-22.0 F)
2012
-27.2 C (-17.0 F)
2013
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Hillsboro 3 N, 1905 to 2013. The record is 162.1 mm (6.4 in) in 1987, marked on the chart; the median year is 47.0 mm (1.9 in).
Wettest day (Rx1day) at Hillsboro 3 N by year
Year
Wettest day (Rx1day)
1905
35.6 mm (1.4 in)
1906
48.8 mm (1.9 in)
1907
54.6 mm (2.1 in)
1908
36.1 mm (1.4 in)
1909
149.9 mm (5.9 in)
1910
54.1 mm (2.1 in)
1911
37.1 mm (1.5 in)
1912
53.8 mm (2.1 in)
1913
79.5 mm (3.1 in)
1914
46.0 mm (1.8 in)
1915
80.0 mm (3.1 in)
1916
76.2 mm (3.0 in)
1917
52.1 mm (2.1 in)
1918
40.1 mm (1.6 in)
1919
67.3 mm (2.6 in)
1920
49.5 mm (1.9 in)
1921
33.3 mm (1.3 in)
1922
68.6 mm (2.7 in)
1923
53.8 mm (2.1 in)
1924
35.6 mm (1.4 in)
1925
45.7 mm (1.8 in)
1926
43.2 mm (1.7 in)
1927
54.4 mm (2.1 in)
1928
63.8 mm (2.5 in)
1929
23.1 mm (0.9 in)
1930
27.9 mm (1.1 in)
1931
41.1 mm (1.6 in)
1932
42.2 mm (1.7 in)
1933
44.5 mm (1.8 in)
1934
38.9 mm (1.5 in)
1935
49.5 mm (1.9 in)
1936
23.6 mm (0.9 in)
1937
57.2 mm (2.3 in)
1938
33.0 mm (1.3 in)
1939
137.2 mm (5.4 in)
1940
42.2 mm (1.7 in)
1941
81.0 mm (3.2 in)
1942
57.2 mm (2.3 in)
1943
29.7 mm (1.2 in)
1944
43.2 mm (1.7 in)
1945
82.6 mm (3.3 in)
1946
44.5 mm (1.8 in)
1947
51.3 mm (2.0 in)
1948
25.7 mm (1.0 in)
1949
63.5 mm (2.5 in)
1950
31.8 mm (1.3 in)
1951
27.4 mm (1.1 in)
1952
128.3 mm (5.1 in)
1953
100.3 mm (3.9 in)
1954
58.4 mm (2.3 in)
1955
26.4 mm (1.0 in)
1956
48.3 mm (1.9 in)
1957
131.6 mm (5.2 in)
1958
27.7 mm (1.1 in)
1959
45.2 mm (1.8 in)
1960
90.4 mm (3.6 in)
1961
66.5 mm (2.6 in)
1962
53.3 mm (2.1 in)
1963
19.1 mm (0.8 in)
1964
59.7 mm (2.4 in)
1965
47.0 mm (1.9 in)
1966
35.6 mm (1.4 in)
1967
34.3 mm (1.4 in)
1968
104.6 mm (4.1 in)
1969
63.5 mm (2.5 in)
1970
33.0 mm (1.3 in)
1971
58.9 mm (2.3 in)
1972
40.4 mm (1.6 in)
1973
88.4 mm (3.5 in)
1974
99.1 mm (3.9 in)
1975
22.9 mm (0.9 in)
1976
43.9 mm (1.7 in)
1977
27.9 mm (1.1 in)
1978
52.3 mm (2.1 in)
1979
33.3 mm (1.3 in)
1980
63.5 mm (2.5 in)
1981
40.1 mm (1.6 in)
1982
41.7 mm (1.6 in)
1983
43.2 mm (1.7 in)
1984
36.3 mm (1.4 in)
1985
49.5 mm (1.9 in)
1986
37.1 mm (1.5 in)
1987
162.1 mm (6.4 in)
1988
33.5 mm (1.3 in)
1989
26.7 mm (1.1 in)
1990
33.8 mm (1.3 in)
1991
27.7 mm (1.1 in)
1992
41.9 mm (1.6 in)
1993
47.5 mm (1.9 in)
1994
127.5 mm (5.0 in)
1995
40.4 mm (1.6 in)
1996
30.0 mm (1.2 in)
1997
62.2 mm (2.4 in)
1998
70.4 mm (2.8 in)
1999
42.2 mm (1.7 in)
2000
40.9 mm (1.6 in)
2001
56.4 mm (2.2 in)
2002
41.1 mm (1.6 in)
2003
59.7 mm (2.4 in)
2004
38.6 mm (1.5 in)
2005
76.2 mm (3.0 in)
2006
34.8 mm (1.4 in)
2007
50.8 mm (2.0 in)
2008
53.3 mm (2.1 in)
2009
50.3 mm (2.0 in)
2010
49.0 mm (1.9 in)
2011
59.7 mm (2.4 in)
2012
29.2 mm (1.1 in)
2013
47.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hillsboro 3 N, 1905 to 2013. The record is 202.9 mm (8.0 in) in 1987, marked on the chart; the median year is 68.8 mm (2.7 in).
Wettest five days (Rx5day) at Hillsboro 3 N by year
Year
Wettest five days (Rx5day)
1905
42.7 mm (1.7 in)
1906
65.9 mm (2.6 in)
1907
62.7 mm (2.5 in)
1908
67.1 mm (2.6 in)
1909
192.6 mm (7.6 in)
1910
61.7 mm (2.4 in)
1911
74.7 mm (2.9 in)
1912
93.0 mm (3.7 in)
1913
99.1 mm (3.9 in)
1914
61.0 mm (2.4 in)
1915
114.8 mm (4.5 in)
1916
84.1 mm (3.3 in)
1917
59.5 mm (2.3 in)
1918
58.6 mm (2.3 in)
1919
108.7 mm (4.3 in)
1920
62.9 mm (2.5 in)
1921
52.9 mm (2.1 in)
1922
88.2 mm (3.5 in)
1923
n/a
1924
21.8 mm (0.9 in)
1925
84.1 mm (3.3 in)
1926
59.0 mm (2.3 in)
1927
56.2 mm (2.2 in)
1928
86.2 mm (3.4 in)
1929
39.7 mm (1.6 in)
1930
67.3 mm (2.6 in)
1931
29.7 mm (1.2 in)
1932
45.2 mm (1.8 in)
1933
44.5 mm (1.8 in)
1934
86.5 mm (3.4 in)
1935
60.7 mm (2.4 in)
1936
29.4 mm (1.2 in)
1937
88.4 mm (3.5 in)
1938
57.3 mm (2.3 in)
1939
165.6 mm (6.5 in)
1940
91.2 mm (3.6 in)
1941
150.9 mm (5.9 in)
1942
109.8 mm (4.3 in)
1943
55.4 mm (2.2 in)
1944
78.8 mm (3.1 in)
1945
94.8 mm (3.7 in)
1946
86.7 mm (3.4 in)
1947
59.0 mm (2.3 in)
1948
39.8 mm (1.6 in)
1949
84.0 mm (3.3 in)
1950
60.0 mm (2.4 in)
1951
73.1 mm (2.9 in)
1952
139.2 mm (5.5 in)
1953
164.3 mm (6.5 in)
1954
90.1 mm (3.5 in)
1955
42.4 mm (1.7 in)
1956
55.9 mm (2.2 in)
1957
135.7 mm (5.3 in)
1958
75.2 mm (3.0 in)
1959
79.5 mm (3.1 in)
1960
91.4 mm (3.6 in)
1961
93.9 mm (3.7 in)
1962
86.3 mm (3.4 in)
1963
34.3 mm (1.4 in)
1964
66.8 mm (2.6 in)
1965
53.9 mm (2.1 in)
1966
63.8 mm (2.5 in)
1967
42.7 mm (1.7 in)
1968
156.4 mm (6.2 in)
1969
110.5 mm (4.4 in)
1970
62.3 mm (2.5 in)
1971
125.0 mm (4.9 in)
1972
46.8 mm (1.8 in)
1973
119.6 mm (4.7 in)
1974
104.1 mm (4.1 in)
1975
54.5 mm (2.1 in)
1976
57.6 mm (2.3 in)
1977
46.2 mm (1.8 in)
1978
54.1 mm (2.1 in)
1979
44.7 mm (1.8 in)
1980
64.3 mm (2.5 in)
1981
66.6 mm (2.6 in)
1982
120.5 mm (4.7 in)
1983
77.6 mm (3.1 in)
1984
86.6 mm (3.4 in)
1985
63.5 mm (2.5 in)
1986
66.1 mm (2.6 in)
1987
202.9 mm (8.0 in)
1988
52.8 mm (2.1 in)
1989
47.0 mm (1.9 in)
1990
63.3 mm (2.5 in)
1991
56.7 mm (2.2 in)
1992
90.9 mm (3.6 in)
1993
72.6 mm (2.9 in)
1994
171.2 mm (6.7 in)
1995
90.7 mm (3.6 in)
1996
44.7 mm (1.8 in)
1997
90.0 mm (3.5 in)
1998
94.0 mm (3.7 in)
1999
80.6 mm (3.2 in)
2000
70.6 mm (2.8 in)
2001
72.1 mm (2.8 in)
2002
41.1 mm (1.6 in)
2003
15.7 mm (0.6 in)
2004
71.4 mm (2.8 in)
2005
100.9 mm (4.0 in)
2006
70.3 mm (2.8 in)
2007
77.3 mm (3.0 in)
2008
58.5 mm (2.3 in)
2009
77.6 mm (3.1 in)
2010
64.2 mm (2.5 in)
2011
64.8 mm (2.6 in)
2012
49.1 mm (1.9 in)
2013
83.3 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hillsboro 3 N, 1905 to 2013. The record is 69 days in 1912, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Hillsboro 3 N by year
Year
Longest dry spell (CDD)
1905
30 days
1906
22 days
1907
37 days
1908
29 days
1909
22 days
1910
32 days
1911
39 days
1912
69 days
1913
30 days
1914
17 days
1915
22 days
1916
25 days
1917
31 days
1918
46 days
1919
42 days
1920
23 days
1921
28 days
1922
29 days
1923
2 days
1924
18 days
1925
21 days
1926
9 days
1927
23 days
1928
26 days
1929
19 days
1930
40 days
1931
20 days
1932
27 days
1933
23 days
1934
36 days
1935
42 days
1936
33 days
1937
29 days
1938
31 days
1939
22 days
1940
25 days
1941
39 days
1942
30 days
1943
36 days
1944
27 days
1945
25 days
1946
26 days
1947
22 days
1948
16 days
1949
22 days
1950
24 days
1951
21 days
1952
47 days
1953
26 days
1954
25 days
1955
20 days
1956
39 days
1957
41 days
1958
31 days
1959
32 days
1960
33 days
1961
39 days
1962
45 days
1963
38 days
1964
38 days
1965
25 days
1966
32 days
1967
40 days
1968
42 days
1969
62 days
1970
29 days
1971
38 days
1972
59 days
1973
56 days
1974
39 days
1975
23 days
1976
32 days
1977
17 days
1978
34 days
1979
26 days
1980
44 days
1981
31 days
1982
29 days
1983
40 days
1984
42 days
1985
23 days
1986
39 days
1987
47 days
1988
32 days
1989
47 days
1990
62 days
1991
44 days
1992
44 days
1993
17 days
1994
24 days
1995
28 days
1996
25 days
1997
26 days
1998
28 days
1999
56 days
2000
35 days
2001
23 days
2002
18 days
2003
15 days
2004
26 days
2005
35 days
2006
41 days
2007
31 days
2008
34 days
2009
25 days
2010
25 days
2011
36 days
2012
21 days
2013
19 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
85 years with a frost
Across 85 years with a frost, the median last spring frost at Hillsboro 3 N falls on 13 May and the median first autumn frost on 25 September, which leaves a median of 137 days between them.
In 1968 to 2011 the median growing season was 144 days. That is 13 days more than in 1906 to 1938.
Fitted over all years, the growing season changes by +2.7 days per decade at this station.
Frost dates and growing season at Hillsboro 3 N
Measure
Median, all years
Earliest period (1906 to 1938)
Recent period (1968 to 2011)
Recent against earliest
Fitted trend
Last spring frost
13 May
18 May
8 May
10 days earlier
-1.7 days per decade
First autumn frost
25 September
25 September
30 September
5 days later
+1.0 days per decade
Growing days
137 days
131 days
144 days
13 days more
+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
81 years, 1906 to 2011
A day with at least 47.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 173.8 mm (6.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Hillsboro 3 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.4 mm (1.9 in)
5 years
70.5 mm (2.8 in)
10 years
89.4 mm (3.5 in)
25 years
118.2 mm (4.7 in)
50 years
143.9 mm (5.7 in)
100 years
173.8 mm (6.8 in)
Longer than the 81 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, 81 years of values from 1906 to 2011.
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: 162.1 mm (6.4 in) in 1987; 149.9 mm (5.9 in) in 1909; 131.6 mm (5.2 in) in 1957.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Hillsboro 3 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hillsboro 3 N 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.