Record envelope, standing records and threshold days for Humboldt 3 W (USC00133985), Iowa, United States, with 105 years of record.
Key Facts for Humboldt 3 W
Humboldt 3 W (USC00133985) is a weather station in Iowa, United States at 42.72 latitude and -94.27 longitude, 338 m (1,110 ft) above sea level.
The station reports from 1893 to 1997, 105 years of record.
1,464 records set at Humboldt 3 W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Humboldt 3 W set a daily record low minimum temperature of -2.8 C (27.0 F) on 13 May 1997.
About the Station
Location: Iowa, United States, 42.72 latitude, -94.27 longitude.
Elevation: 338 m (1,110 ft).
Period of record: 1893 to 1997, 105 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 Humboldt 3 W. 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 Humboldt 3 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-35.6 C (-32.1 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-16.1 C (3.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
40.6 C (105.1 F)
1.1 C (34.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
2.8 C (37.0 F)
n/a
n/a
Aug
43.9 C (111.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Humboldt 3 W still stand. 1936 holds the most, with 45.
Standing records at Humboldt 3 W by the year they were set
Year set
Standing records
1895
22
1896
17
1897
23
1898
12
1899
28
1900
16
1901
24
1902
27
1903
8
1904
14
1905
19
1906
5
1907
21
1908
13
1909
23
1910
17
1911
27
1912
12
1913
24
1914
15
1915
15
1916
16
1917
14
1918
11
1919
22
1920
8
1921
14
1922
14
1923
14
1924
22
1925
27
1926
20
1927
18
1928
22
1929
15
1930
42
1931
28
1932
12
1933
13
1934
38
1935
24
1936
45
1937
24
1938
15
1939
9
1956
10
1957
10
1958
18
1959
22
1960
16
1961
6
1962
15
1963
20
1964
19
1965
21
1966
18
1967
16
1968
15
1969
16
1970
16
1971
7
1972
12
1973
10
1974
11
1975
17
1976
13
1977
24
1978
10
1979
10
1980
10
1981
19
1982
13
1983
21
1984
10
1985
12
1986
15
1987
19
1988
11
1989
15
1990
16
1991
19
1992
20
1993
8
1994
11
1995
8
1996
9
1997
7
All-Time Record Progression
5 new records
5 all-time records were set at Humboldt 3 W between 3 August 1930 and 31 July 1964. Each dot is a new record.
When Humboldt 3 W set new all-time records
Date
Kind
Detail
1930-08-03
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
1930-08-03
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
1932-07-14
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
1963-06-02
Record daily precipitation
Record daily precipitation 195.6 mm (7.7 in)
1964-07-31
Record daily precipitation
Record daily precipitation 208.5 mm (8.2 in)
Wettest Day of Each Month
Jul: 208.5 mm (8.2 in)
The wettest day on record for each calendar month at Humboldt 3 W. The most was 208.5 mm (8.2 in) on 31 July 1964.
Record daily precipitation for each month at Humboldt 3 W
Month
Record daily precipitation (mm)
Date
Jan
41.4 mm (1.6 in)
22 January 1933
Feb
35.6 mm (1.4 in)
18 February 1971
Mar
85.3 mm (3.4 in)
19 March 1982
Apr
68.6 mm (2.7 in)
18 April 1894
May
86.4 mm (3.4 in)
14 May 1896
Jun
195.6 mm (7.7 in)
2 June 1963
Jul
208.5 mm (8.2 in)
31 July 1964
Aug
132.3 mm (5.2 in)
22 August 1985
Sep
104.6 mm (4.1 in)
29 September 1925
Oct
59.4 mm (2.3 in)
16 October 1968
Nov
87.4 mm (3.4 in)
1 November 1909
Dec
42.7 mm (1.7 in)
10 December 1911
Period of Record Coverage
1895 to 1997
Complete yearUnder 90 percent of days
87 years of record at Humboldt 3 W, 1895 to 1997. 9 years have data for under 90 percent of days and are left out of rankings: 1895, 1912, 1914, 1918, 1921, 1939, 1956, 1983 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 73 complete years at Humboldt 3 W, 1896 to 1996. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 1979, at 6.6 C (43.9 F), and the warmest was 1931, at 11.1 C (51.9 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Humboldt 3 W as warming stripes, 1896 to 1996
Year
Annual mean temperature
Difference from the station mean
1896
8.8 C
+0.45 C
1897
8.1 C
-0.25 C
1898
8.0 C
-0.39 C
1899
8.1 C
-0.28 C
1900
9.2 C
+0.78 C
1901
9.1 C
+0.68 C
1902
8.6 C
+0.19 C
1903
8.2 C
-0.23 C
1904
7.4 C
-0.99 C
1905
7.8 C
-0.58 C
1906
8.5 C
+0.13 C
1907
8.0 C
-0.40 C
1908
9.4 C
+0.97 C
1911
9.2 C
+0.86 C
1913
9.0 C
+0.63 C
1915
8.5 C
+0.15 C
1916
8.2 C
-0.17 C
1917
7.2 C
-1.21 C
1919
8.7 C
+0.33 C
1922
9.7 C
+1.27 C
1923
9.0 C
+0.59 C
1924
7.3 C
-1.13 C
1925
8.6 C
+0.26 C
1926
8.5 C
+0.07 C
1927
8.6 C
+0.17 C
1928
8.6 C
+0.25 C
1929
7.3 C
-1.07 C
1930
9.3 C
+0.95 C
1931
11.1 C
+2.70 C
1932
7.7 C
-0.67 C
1933
9.1 C
+0.72 C
1934
9.4 C
+0.97 C
1935
7.6 C
-0.77 C
1936
8.2 C
-0.17 C
1937
8.0 C
-0.36 C
1938
9.8 C
+1.40 C
1957
8.6 C
+0.23 C
1958
8.3 C
-0.06 C
1959
8.4 C
+0.01 C
1960
8.3 C
-0.06 C
1961
8.5 C
+0.09 C
1962
8.2 C
-0.14 C
1963
9.0 C
+0.57 C
1964
8.8 C
+0.43 C
1965
7.6 C
-0.76 C
1966
7.4 C
-0.96 C
1967
7.7 C
-0.72 C
1968
8.4 C
+0.05 C
1969
7.3 C
-1.12 C
1971
8.1 C
-0.31 C
1972
7.0 C
-1.38 C
1973
9.0 C
+0.64 C
1974
8.4 C
+0.03 C
1975
8.6 C
+0.19 C
1976
8.6 C
+0.19 C
1977
9.0 C
+0.58 C
1978
6.9 C
-1.51 C
1979
6.6 C
-1.76 C
1980
8.4 C
-0.01 C
1981
8.8 C
+0.44 C
1984
8.5 C
+0.10 C
1985
7.6 C
-0.75 C
1986
8.9 C
+0.47 C
1987
10.6 C
+2.19 C
1988
8.8 C
+0.46 C
1989
7.8 C
-0.61 C
1990
9.4 C
+1.02 C
1991
8.6 C
+0.19 C
1992
8.5 C
+0.15 C
1993
6.9 C
-1.49 C
1994
7.9 C
-0.46 C
1995
8.0 C
-0.40 C
1996
6.9 C
-1.50 C
The fitted trend in annual mean temperature here over 1896 to 1996 is -0.04 C (-0.10 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.07 F (-0.18 to 0.03) per decade. The slope is a straight line fitted to 73 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Humboldt 3 W
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.10 to 0.02) per decade
-0.07 F (-0.18 to 0.03) per decade
1896 to 1996
73
Not clearly different from zero
Mean daily maximum
-0.10 C (-0.17 to -0.02) per decade
-0.18 F (-0.31 to -0.05) per decade
1896 to 1996
73
Fall
Mean daily minimum
0.02 C (-0.04 to 0.08) per decade
0.03 F (-0.07 to 0.14) per decade
1896 to 1996
73
Not clearly different from zero
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 1997
Yearly extremes at Humboldt 3 W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1930
36.7 C (98.1 F)
87
Coldest night (TNn)
-41.1 C (-42.0 F)
1912
-30.0 C (-22.0 F)
87
Wettest day (Rx1day)
208.5 mm (8.2 in)
1964
58.4 mm (2.3 in)
89
Wettest five days (Rx5day)
225.1 mm (8.9 in)
1963
88.0 mm (3.5 in)
89
Longest dry spell (CDD)
63 days
1931
29 days
89
Hottest day (TXx)
The hottest day of the year at Humboldt 3 W, 1893 to 1997. The record is 43.9 C (111.0 F) in 1930, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Humboldt 3 W by year
Year
Hottest day (TXx)
1893
n/a
1894
n/a
1895
36.7 C (98.1 F)
1896
37.2 C (99.0 F)
1897
37.8 C (100.0 F)
1898
35.6 C (96.1 F)
1899
36.1 C (97.0 F)
1900
35.0 C (95.0 F)
1901
42.2 C (108.0 F)
1902
34.4 C (93.9 F)
1903
33.3 C (91.9 F)
1904
33.9 C (93.0 F)
1905
35.6 C (96.1 F)
1906
36.1 C (97.0 F)
1907
33.3 C (91.9 F)
1908
34.4 C (93.9 F)
1909
36.7 C (98.1 F)
1910
35.6 C (96.1 F)
1911
40.6 C (105.1 F)
1912
35.0 C (95.0 F)
1913
38.3 C (100.9 F)
1914
37.2 C (99.0 F)
1915
32.2 C (90.0 F)
1916
38.3 C (100.9 F)
1917
37.2 C (99.0 F)
1918
37.2 C (99.0 F)
1919
38.3 C (100.9 F)
1920
36.1 C (97.0 F)
1921
36.7 C (98.1 F)
1922
38.9 C (102.0 F)
1923
37.2 C (99.0 F)
1924
35.6 C (96.1 F)
1925
39.4 C (102.9 F)
1926
41.1 C (106.0 F)
1927
38.9 C (102.0 F)
1928
36.1 C (97.0 F)
1929
35.6 C (96.1 F)
1930
43.9 C (111.0 F)
1931
39.4 C (102.9 F)
1932
36.7 C (98.1 F)
1933
39.4 C (102.9 F)
1934
40.6 C (105.1 F)
1935
36.1 C (97.0 F)
1936
43.3 C (109.9 F)
1937
39.4 C (102.9 F)
1938
37.2 C (99.0 F)
1939
37.8 C (100.0 F)
1956
36.7 C (98.1 F)
1957
35.6 C (96.1 F)
1958
35.0 C (95.0 F)
1959
36.7 C (98.1 F)
1960
35.6 C (96.1 F)
1961
36.7 C (98.1 F)
1962
33.3 C (91.9 F)
1963
37.8 C (100.0 F)
1964
36.7 C (98.1 F)
1965
37.2 C (99.0 F)
1966
38.9 C (102.0 F)
1967
36.7 C (98.1 F)
1968
36.1 C (97.0 F)
1969
34.4 C (93.9 F)
1970
37.2 C (99.0 F)
1971
37.8 C (100.0 F)
1972
34.4 C (93.9 F)
1973
36.1 C (97.0 F)
1974
38.3 C (100.9 F)
1975
36.7 C (98.1 F)
1976
37.8 C (100.0 F)
1977
37.8 C (100.0 F)
1978
36.7 C (98.1 F)
1979
34.4 C (93.9 F)
1980
38.9 C (102.0 F)
1981
36.1 C (97.0 F)
1982
36.7 C (98.1 F)
1983
37.2 C (99.0 F)
1984
36.1 C (97.0 F)
1985
40.0 C (104.0 F)
1986
35.0 C (95.0 F)
1987
37.2 C (99.0 F)
1988
37.8 C (100.0 F)
1989
34.4 C (93.9 F)
1990
38.3 C (100.9 F)
1991
36.7 C (98.1 F)
1992
32.2 C (90.0 F)
1993
32.2 C (90.0 F)
1994
33.9 C (93.0 F)
1995
36.7 C (98.1 F)
1996
34.4 C (93.9 F)
1997
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Humboldt 3 W, 1893 to 1997. The record is -41.1 C (-42.0 F) in 1912, marked on the chart; the median year is -30.0 C (-22.0 F).
Coldest night (TNn) at Humboldt 3 W by year
Year
Coldest night (TNn)
1893
n/a
1894
n/a
1895
-22.2 C (-8.0 F)
1896
-24.4 C (-11.9 F)
1897
-30.6 C (-23.1 F)
1898
-30.0 C (-22.0 F)
1899
-35.0 C (-31.0 F)
1900
-28.9 C (-20.0 F)
1901
-31.1 C (-24.0 F)
1902
-30.0 C (-22.0 F)
1903
-27.2 C (-17.0 F)
1904
-33.3 C (-27.9 F)
1905
-35.6 C (-32.1 F)
1906
-27.2 C (-17.0 F)
1907
-27.8 C (-18.0 F)
1908
-25.6 C (-14.1 F)
1909
-28.9 C (-20.0 F)
1910
-33.3 C (-27.9 F)
1911
-33.3 C (-27.9 F)
1912
-41.1 C (-42.0 F)
1913
-30.6 C (-23.1 F)
1914
-32.2 C (-26.0 F)
1915
-31.7 C (-25.1 F)
1916
-31.7 C (-25.1 F)
1917
-33.3 C (-27.9 F)
1918
-16.1 C (3.0 F)
1919
-30.0 C (-22.0 F)
1920
-28.3 C (-18.9 F)
1921
-28.9 C (-20.0 F)
1922
-30.6 C (-23.1 F)
1923
-26.1 C (-15.0 F)
1924
-33.9 C (-29.0 F)
1925
-28.3 C (-18.9 F)
1926
-26.1 C (-15.0 F)
1927
-26.1 C (-15.0 F)
1928
-27.2 C (-17.0 F)
1929
-30.0 C (-22.0 F)
1930
-31.7 C (-25.1 F)
1931
-20.0 C (-4.0 F)
1932
-28.9 C (-20.0 F)
1933
-31.7 C (-25.1 F)
1934
-25.6 C (-14.1 F)
1935
-32.2 C (-26.0 F)
1936
-32.8 C (-27.0 F)
1937
-31.1 C (-24.0 F)
1938
-27.2 C (-17.0 F)
1939
-25.0 C (-13.0 F)
1956
-27.2 C (-17.0 F)
1957
-30.0 C (-22.0 F)
1958
-32.8 C (-27.0 F)
1959
-28.9 C (-20.0 F)
1960
-28.3 C (-18.9 F)
1961
-28.3 C (-18.9 F)
1962
-30.6 C (-23.1 F)
1963
-30.0 C (-22.0 F)
1964
-24.4 C (-11.9 F)
1965
-30.0 C (-22.0 F)
1966
-30.0 C (-22.0 F)
1967
-30.0 C (-22.0 F)
1968
-27.8 C (-18.0 F)
1969
-26.7 C (-16.1 F)
1970
-35.6 C (-32.1 F)
1971
-31.1 C (-24.0 F)
1972
-35.0 C (-31.0 F)
1973
-28.9 C (-20.0 F)
1974
-31.1 C (-24.0 F)
1975
-27.8 C (-18.0 F)
1976
-26.7 C (-16.1 F)
1977
-31.1 C (-24.0 F)
1978
-28.3 C (-18.9 F)
1979
-31.7 C (-25.1 F)
1980
-26.1 C (-15.0 F)
1981
-28.3 C (-18.9 F)
1982
-36.1 C (-33.0 F)
1983
-32.2 C (-26.0 F)
1984
-28.9 C (-20.0 F)
1985
-31.1 C (-24.0 F)
1986
-30.0 C (-22.0 F)
1987
-23.9 C (-11.0 F)
1988
-30.0 C (-22.0 F)
1989
-31.1 C (-24.0 F)
1990
-31.7 C (-25.1 F)
1991
-27.8 C (-18.0 F)
1992
-23.9 C (-11.0 F)
1993
-29.4 C (-20.9 F)
1994
-31.7 C (-25.1 F)
1995
-25.0 C (-13.0 F)
1996
-32.8 C (-27.0 F)
1997
-25.6 C (-14.1 F)
Wettest day (Rx1day)
The wettest day of the year at Humboldt 3 W, 1893 to 1997. The record is 208.5 mm (8.2 in) in 1964, marked on the chart; the median year is 58.4 mm (2.3 in).
Wettest day (Rx1day) at Humboldt 3 W by year
Year
Wettest day (Rx1day)
1893
41.9 mm (1.6 in)
1894
68.6 mm (2.7 in)
1895
34.5 mm (1.4 in)
1896
86.4 mm (3.4 in)
1897
43.7 mm (1.7 in)
1898
72.1 mm (2.8 in)
1899
83.8 mm (3.3 in)
1900
54.9 mm (2.2 in)
1901
70.1 mm (2.8 in)
1902
127.0 mm (5.0 in)
1903
68.6 mm (2.7 in)
1904
52.8 mm (2.1 in)
1905
52.1 mm (2.1 in)
1906
50.8 mm (2.0 in)
1907
49.5 mm (1.9 in)
1908
64.0 mm (2.5 in)
1909
87.4 mm (3.4 in)
1910
50.8 mm (2.0 in)
1911
45.5 mm (1.8 in)
1912
38.9 mm (1.5 in)
1913
39.9 mm (1.6 in)
1914
53.8 mm (2.1 in)
1915
63.0 mm (2.5 in)
1916
50.8 mm (2.0 in)
1917
48.5 mm (1.9 in)
1918
62.7 mm (2.5 in)
1919
45.7 mm (1.8 in)
1920
105.9 mm (4.2 in)
1921
38.4 mm (1.5 in)
1922
50.8 mm (2.0 in)
1923
51.8 mm (2.0 in)
1924
41.1 mm (1.6 in)
1925
104.6 mm (4.1 in)
1926
50.8 mm (2.0 in)
1927
47.5 mm (1.9 in)
1928
85.1 mm (3.4 in)
1929
35.8 mm (1.4 in)
1930
39.9 mm (1.6 in)
1931
81.3 mm (3.2 in)
1932
80.3 mm (3.2 in)
1933
59.4 mm (2.3 in)
1934
47.2 mm (1.9 in)
1935
85.1 mm (3.4 in)
1936
55.6 mm (2.2 in)
1937
58.4 mm (2.3 in)
1938
82.6 mm (3.3 in)
1939
37.6 mm (1.5 in)
1956
52.8 mm (2.1 in)
1957
43.2 mm (1.7 in)
1958
98.8 mm (3.9 in)
1959
64.0 mm (2.5 in)
1960
50.0 mm (2.0 in)
1961
42.4 mm (1.7 in)
1962
101.6 mm (4.0 in)
1963
195.6 mm (7.7 in)
1964
208.5 mm (8.2 in)
1965
73.7 mm (2.9 in)
1966
53.3 mm (2.1 in)
1967
44.2 mm (1.7 in)
1968
59.4 mm (2.3 in)
1969
71.1 mm (2.8 in)
1970
38.1 mm (1.5 in)
1971
67.3 mm (2.6 in)
1972
87.6 mm (3.4 in)
1973
95.3 mm (3.8 in)
1974
55.9 mm (2.2 in)
1975
42.4 mm (1.7 in)
1976
48.3 mm (1.9 in)
1977
74.7 mm (2.9 in)
1978
101.6 mm (4.0 in)
1979
50.8 mm (2.0 in)
1980
50.0 mm (2.0 in)
1981
63.5 mm (2.5 in)
1982
85.3 mm (3.4 in)
1983
63.5 mm (2.5 in)
1984
93.2 mm (3.7 in)
1985
132.3 mm (5.2 in)
1986
58.4 mm (2.3 in)
1987
80.0 mm (3.1 in)
1988
120.9 mm (4.8 in)
1989
76.2 mm (3.0 in)
1990
52.1 mm (2.1 in)
1991
79.2 mm (3.1 in)
1992
62.5 mm (2.5 in)
1993
65.8 mm (2.6 in)
1994
51.3 mm (2.0 in)
1995
59.2 mm (2.3 in)
1996
54.1 mm (2.1 in)
1997
31.8 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Humboldt 3 W, 1893 to 1997. The record is 225.1 mm (8.9 in) in 1963, marked on the chart; the median year is 88.0 mm (3.5 in).
Wettest five days (Rx5day) at Humboldt 3 W by year
Year
Wettest five days (Rx5day)
1893
70.1 mm (2.8 in)
1894
74.5 mm (2.9 in)
1895
47.2 mm (1.9 in)
1896
167.5 mm (6.6 in)
1897
44.0 mm (1.7 in)
1898
100.3 mm (3.9 in)
1899
102.4 mm (4.0 in)
1900
79.3 mm (3.1 in)
1901
88.0 mm (3.5 in)
1902
147.8 mm (5.8 in)
1903
106.5 mm (4.2 in)
1904
74.4 mm (2.9 in)
1905
76.0 mm (3.0 in)
1906
70.4 mm (2.8 in)
1907
86.8 mm (3.4 in)
1908
131.9 mm (5.2 in)
1909
135.2 mm (5.3 in)
1910
89.7 mm (3.5 in)
1911
50.3 mm (2.0 in)
1912
20.3 mm (0.8 in)
1913
62.7 mm (2.5 in)
1914
96.2 mm (3.8 in)
1915
110.1 mm (4.3 in)
1916
59.2 mm (2.3 in)
1917
75.4 mm (3.0 in)
1918
104.4 mm (4.1 in)
1919
94.7 mm (3.7 in)
1920
150.6 mm (5.9 in)
1921
57.1 mm (2.2 in)
1922
62.2 mm (2.4 in)
1923
93.5 mm (3.7 in)
1924
74.1 mm (2.9 in)
1925
137.9 mm (5.4 in)
1926
55.1 mm (2.2 in)
1927
63.0 mm (2.5 in)
1928
111.5 mm (4.4 in)
1929
55.0 mm (2.2 in)
1930
68.1 mm (2.7 in)
1931
119.2 mm (4.7 in)
1932
74.0 mm (2.9 in)
1933
103.7 mm (4.1 in)
1934
56.7 mm (2.2 in)
1935
137.4 mm (5.4 in)
1936
80.5 mm (3.2 in)
1937
73.4 mm (2.9 in)
1938
131.1 mm (5.2 in)
1939
88.7 mm (3.5 in)
1956
63.5 mm (2.5 in)
1957
68.8 mm (2.7 in)
1958
140.0 mm (5.5 in)
1959
86.8 mm (3.4 in)
1960
66.5 mm (2.6 in)
1961
61.5 mm (2.4 in)
1962
176.0 mm (6.9 in)
1963
225.1 mm (8.9 in)
1964
224.8 mm (8.9 in)
1965
150.3 mm (5.9 in)
1966
65.0 mm (2.6 in)
1967
121.7 mm (4.8 in)
1968
107.1 mm (4.2 in)
1969
90.5 mm (3.6 in)
1970
67.1 mm (2.6 in)
1971
115.0 mm (4.5 in)
1972
125.3 mm (4.9 in)
1973
145.6 mm (5.7 in)
1974
69.1 mm (2.7 in)
1975
65.5 mm (2.6 in)
1976
59.7 mm (2.4 in)
1977
78.3 mm (3.1 in)
1978
107.0 mm (4.2 in)
1979
105.7 mm (4.2 in)
1980
69.4 mm (2.7 in)
1981
84.6 mm (3.3 in)
1982
121.5 mm (4.8 in)
1983
92.1 mm (3.6 in)
1984
118.6 mm (4.7 in)
1985
153.1 mm (6.0 in)
1986
77.0 mm (3.0 in)
1987
99.0 mm (3.9 in)
1988
122.9 mm (4.8 in)
1989
77.2 mm (3.0 in)
1990
91.6 mm (3.6 in)
1991
124.5 mm (4.9 in)
1992
107.0 mm (4.2 in)
1993
125.5 mm (4.9 in)
1994
70.9 mm (2.8 in)
1995
62.5 mm (2.5 in)
1996
71.7 mm (2.8 in)
1997
43.9 mm (1.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Humboldt 3 W, 1893 to 1997. The record is 63 days in 1931, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Humboldt 3 W by year
Year
Longest dry spell (CDD)
1893
29 days
1894
23 days
1895
42 days
1896
22 days
1897
39 days
1898
35 days
1899
51 days
1900
28 days
1901
22 days
1902
19 days
1903
54 days
1904
30 days
1905
20 days
1906
35 days
1907
30 days
1908
30 days
1909
21 days
1910
37 days
1911
35 days
1912
25 days
1913
33 days
1914
44 days
1915
29 days
1916
46 days
1917
23 days
1918
28 days
1919
27 days
1920
19 days
1921
18 days
1922
19 days
1923
61 days
1924
24 days
1925
23 days
1926
39 days
1927
22 days
1928
18 days
1929
29 days
1930
30 days
1931
63 days
1932
30 days
1933
25 days
1934
57 days
1935
24 days
1936
24 days
1937
31 days
1938
27 days
1939
21 days
1956
24 days
1957
26 days
1958
30 days
1959
24 days
1960
34 days
1961
31 days
1962
57 days
1963
29 days
1964
20 days
1965
21 days
1966
49 days
1967
38 days
1968
40 days
1969
18 days
1970
28 days
1971
30 days
1972
31 days
1973
17 days
1974
29 days
1975
28 days
1976
44 days
1977
33 days
1978
20 days
1979
30 days
1980
38 days
1981
30 days
1982
20 days
1983
23 days
1984
28 days
1985
15 days
1986
29 days
1987
36 days
1988
40 days
1989
26 days
1990
20 days
1991
37 days
1992
23 days
1993
17 days
1994
33 days
1995
25 days
1996
26 days
1997
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
73 years with a frost
Across 73 years with a frost, the median last spring frost at Humboldt 3 W falls on 3 May and the median first autumn frost on 2 October, which leaves a median of 154 days between them.
In 1964 to 1996 the median growing season was 155 days. That is 2 days more than in 1896 to 1932.
Fitted over all years, the growing season changes by +1.0 days per decade at this station.
Frost dates and growing season at Humboldt 3 W
Measure
Median, all years
Earliest period (1896 to 1932)
Recent period (1964 to 1996)
Recent against earliest
Fitted trend
Last spring frost
3 May
6 May
2 May
4 days earlier
-0.8 days per decade
First autumn frost
2 October
2 October
3 October
1 day later
+0.2 days per decade
Growing days
154 days
153 days
155 days
2 days more
+1.0 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
77 years, 1896 to 1996
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 194.4 mm (7.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Humboldt 3 W: 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
84.4 mm (3.3 in)
10 years
103.8 mm (4.1 in)
25 years
134.1 mm (5.3 in)
50 years
161.7 mm (6.4 in)
100 years
194.4 mm (7.7 in)
Longer than the 77 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, 77 years of values from 1896 to 1996.
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: 208.5 mm (8.2 in) in 1964; 195.6 mm (7.7 in) in 1963; 132.3 mm (5.2 in) in 1985.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Humboldt 3 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Humboldt 3 W 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.