Humboldt 3 W Weather Records (USC00133985)

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

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

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

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.

Days with data per year at Humboldt 3 W
Year	Days with data	Share of year	Complete
1895	269	74%	No
1896	360	98%	Yes
1897	362	99%	Yes
1898	353	97%	Yes
1899	363	99%	Yes
1900	363	99%	Yes
1901	354	97%	Yes
1902	357	98%	Yes
1903	356	98%	Yes
1904	362	99%	Yes
1905	360	99%	Yes
1906	356	98%	Yes
1907	357	98%	Yes
1908	358	98%	Yes
1909	363	99%	Yes
1910	362	99%	Yes
1911	363	99%	Yes
1912	203	55%	No
1913	363	99%	Yes
1914	300	82%	No
1915	353	97%	Yes
1916	364	99%	Yes
1917	351	96%	Yes
1918	239	65%	No
1919	364	100%	Yes
1920	346	95%	Yes
1921	304	83%	No
1922	362	99%	Yes
1923	363	99%	Yes
1924	365	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	364	100%	Yes
1930	365	100%	Yes
1931	364	100%	Yes
1932	363	99%	Yes
1933	365	100%	Yes
1934	363	99%	Yes
1935	365	100%	Yes
1936	364	99%	Yes
1937	364	100%	Yes
1938	363	99%	Yes
1939	243	67%	No
1956	274	75%	No
1957	362	99%	Yes
1958	364	100%	Yes
1959	364	100%	Yes
1960	364	99%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	365	100%	Yes
1965	363	99%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	363	99%	Yes
1977	363	99%	Yes
1978	364	100%	Yes
1979	362	99%	Yes
1980	363	99%	Yes
1981	356	98%	Yes
1982	339	93%	Yes
1983	185	51%	No
1984	366	100%	Yes
1985	365	100%	Yes
1986	363	99%	Yes
1987	363	99%	Yes
1988	364	99%	Yes
1989	364	100%	Yes
1990	363	99%	Yes
1991	364	100%	Yes
1992	365	100%	Yes
1993	364	100%	Yes
1994	363	99%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	154	42%	No

Latest Records

Latest records at Humboldt 3 W
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 May 1997	Humboldt 3 W, US	daily low min	-2.8 C (27.0 F)	1.1 C (2.0 F)	87 years	38 of 100 (Notable)
30 April 1997	Humboldt 3 W, US	daily rain (Tie)	21.3 mm (0.8 in)	tie	35 years	5 of 100 (Routine)
12 April 1997	Humboldt 3 W, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	101 years	55 of 100 (Notable)
11 April 1997	Humboldt 3 W, US	daily low max	0.0 C (32.0 F)	3.3 C (5.9 F)	84 years	39 of 100 (Notable)
10 April 1997	Humboldt 3 W, US	daily low max (Tie)	0.6 C (33.1 F)	tie	2 years	2 of 100 (Routine)
8 April 1997	Humboldt 3 W, US	daily low min	-11.7 C (10.9 F)	1.1 C (2.0 F)	68 years	32 of 100 (Routine)
8 April 1997	Humboldt 3 W, US	daily low max	-0.6 C (30.9 F)	1.2 C (2.2 F)	15 years	15 of 100 (Routine)
15 March 1997	Humboldt 3 W, US	daily low max (Tie)	-6.7 C (19.9 F)	tie	96 years	9 of 100 (Routine)
13 March 1997	Humboldt 3 W, US	daily rain	31.8 mm (1.3 in)	1.8 mm (0.07 in)	7 years	14 of 100 (Routine)
4 February 1997	Humboldt 3 W, US	daily snowfall	19.1 cm (7.5 in)	6.4 cm (2.5 in)	81 years	46 of 100 (Notable)
4 February 1997	Humboldt 3 W, US	daily rain	19.1 mm (0.8 in)	4.9 mm (0.19 in)	81 years	20 of 100 (Routine)
1 February 1997	Humboldt 3 W, US	daily high min	-0.6 C (30.9 F)	0.5 C (0.9 F)	86 years	35 of 100 (Notable)
24 January 1997	Humboldt 3 W, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	25 years	21 of 100 (Routine)
3 January 1997	Humboldt 3 W, US	daily high min	0.6 C (33.1 F)	1.7 C (3.1 F)	5 years	13 of 100 (Routine)
2 January 1997	Humboldt 3 W, US	daily high min	0.6 C (33.1 F)	1.7 C (3.1 F)	5 years	13 of 100 (Routine)
25 December 1996	Humboldt 3 W, US	daily low max (Tie)	-18.9 C (-2.0 F)	tie	13 years	3 of 100 (Routine)
1 November 1996	Humboldt 3 W, US	daily low max (Tie)	0.0 C (32.0 F)	tie	30 years	4 of 100 (Routine)
26 August 1996	Humboldt 3 W, US	daily rain	49.8 mm (2.0 in)	15.8 mm (0.6 in)	93 years	47 of 100 (Notable)
29 June 1996	Humboldt 3 W, US	monthly high min	25.6 C (78.1 F)	0.6 C (1.1 F)	59 years	38 of 100 (Notable)
19 May 1996	Humboldt 3 W, US	daily high min	19.4 C (66.9 F)	1.1 C (2.0 F)	87 years	38 of 100 (Notable)

Climate Trend

73 complete years, 1896 to 1996

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 2026-10-17 (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).