Pella 1S Weather Records (USC00136527)

Record envelope, standing records and threshold days for Pella 1S (USC00136527), Iowa, United States, with 129 years of record.

Key Facts for Pella 1S

Pella 1S (USC00136527) is a weather station in Iowa, United States at 41.38 latitude and -92.92 longitude, 238 m (780 ft) above sea level.
The station reports from 1898 to 2026, 129 years of record.
1,464 records set at Pella 1S still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Pella 1S set a daily record precipitation of 34.3 mm (1.4 in) on 30 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Iowa, United States, 41.38 latitude, -92.92 longitude.
Elevation: 238 m (780 ft).
Period of record: 1898 to 2026, 129 years.
Eligible elements: 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 Pella 1S. 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 Pella 1S, 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)	-35.6 C (-32.1 F)	n/a	n/a
Feb	24.4 C (75.9 F)	-33.3 C (-27.9 F)	n/a	n/a
Mar	31.1 C (88.0 F)	-26.1 C (-15.0 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-11.7 C (10.9 F)	n/a	n/a
May	34.4 C (93.9 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	38.3 C (100.9 F)	3.9 C (39.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	5.6 C (42.1 F)	n/a	n/a
Aug	44.4 C (111.9 F)	2.8 C (37.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	26.7 C (80.1 F)	-25.0 C (-13.0 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-34.4 C (-29.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Pella 1S still stand. 1918 holds the most, with 89.

Standing records at Pella 1S by the year they were set
Year set	Standing records
1898	68
1899	70
1900	47
1901	69
1902	14
1903	13
1905	14
1906	51
1907	40
1908	37
1909	59
1910	84
1911	81
1912	80
1913	87
1914	58
1915	63
1916	69
1917	58
1918	89
1919	35
1920	58
1921	60
1922	46
1923	48
1924	64
1925	2

Wettest Day of Each Month

Sep: 156.0 mm (6.1 in)

The wettest day on record for each calendar month at Pella 1S. The most was 156.0 mm (6.1 in) on 14 September 1914.

Record daily precipitation for each month at Pella 1S
Month	Record daily precipitation (mm)	Date
Jan	29.7 mm (1.2 in)	16 January 1980
Feb	47.0 mm (1.9 in)	25 February 2007
Mar	52.1 mm (2.1 in)	19 March 1963
Apr	139.7 mm (5.5 in)	18 April 2013
May	97.8 mm (3.9 in)	31 May 1907
Jun	121.2 mm (4.8 in)	10 June 2011
Jul	148.8 mm (5.9 in)	31 July 2024
Aug	113.5 mm (4.5 in)	26 August 1987
Sep	156.0 mm (6.1 in)	14 September 1914
Oct	108.7 mm (4.3 in)	14 October 2014
Nov	132.3 mm (5.2 in)	17 November 1952
Dec	51.1 mm (2.0 in)	14 December 2015

Period of Record Coverage

1898 to 1925

27 years of record at Pella 1S, 1898 to 1925. 10 years have data for under 90 percent of days and are left out of rankings: 1898, 1899, 1901, 1902, 1903, 1905, 1906, 1908 and others.

Days with data per year at Pella 1S
Year	Days with data	Share of year	Complete
1898	226	62%	No
1899	321	88%	No
1900	330	90%	Yes
1901	309	85%	No
1902	87	24%	No
1903	85	23%	No
1905	151	41%	No
1906	320	88%	No
1907	345	95%	Yes
1908	302	83%	No
1909	305	84%	No
1910	365	100%	Yes
1911	365	100%	Yes
1912	358	98%	Yes
1913	361	99%	Yes
1914	359	98%	Yes
1915	361	99%	Yes
1916	354	97%	Yes
1917	356	98%	Yes
1918	362	99%	Yes
1919	359	98%	Yes
1920	361	99%	Yes
1921	360	99%	Yes
1922	357	98%	Yes
1923	358	98%	Yes
1924	342	93%	Yes
1925	31	8%	No

Latest Records

Latest records at Pella 1S
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 2026	Pella 1S, US	daily rain (Provisional)	34.3 mm (1.4 in)	0.5 mm (0.02 in)	107 years	40 of 100 (Notable)
9 September 2026	Pella 1S, US	daily rain (Provisional)	86.9 mm (3.4 in)	25.7 mm (1.0 in)	36 years	37 of 100 (Notable)
19 May 2026	Pella 1S, US	daily rain	80.8 mm (3.2 in)	39.9 mm (1.6 in)	41 years	54 of 100 (Notable)
10 April 2026	Pella 1S, US	daily rain	30.7 mm (1.2 in)	7.1 mm (0.28 in)	12 years	18 of 100 (Routine)
9 January 2026	Pella 1S, US	daily rain	26.7 mm (1.1 in)	13.0 mm (0.5 in)	2 years	37 of 100 (Notable)
30 November 2025	Pella 1S, US	daily snow depth (Tie)	15.2 cm (6.0 in)	tie	51 years	6 of 100 (Routine)
29 November 2025	Pella 1S, US	daily snowfall	9.1 cm (3.6 in)	0.2 cm (0.1 in)	54 years	26 of 100 (Routine)
6 July 2025	Pella 1S, US	daily rain	65.8 mm (2.6 in)	13.0 mm (0.5 in)	11 years	21 of 100 (Routine)
2 April 2025	Pella 1S, US	daily rain	27.4 mm (1.1 in)	8.3 mm (0.33 in)	42 years	28 of 100 (Routine)
15 December 2024	Pella 1S, US	daily rain	20.3 mm (0.8 in)	4.6 mm (0.18 in)	34 years	20 of 100 (Routine)
31 July 2024	Pella 1S, US	monthly rain	148.8 mm (5.9 in)	9.1 mm (0.36 in)	55 years	41 of 100 (Notable)
20 May 2024	Pella 1S, US	daily rain	67.1 mm (2.6 in)	16.3 mm (0.6 in)	37 years	34 of 100 (Routine)
22 January 2024	Pella 1S, US	daily snow depth	38.1 cm (15.0 in)	7.6 cm (3.0 in)	112 years	49 of 100 (Notable)
21 January 2024	Pella 1S, US	daily snow depth	43.2 cm (17.0 in)	10.2 cm (4.0 in)	44 years	35 of 100 (Notable)
20 January 2024	Pella 1S, US	daily snow depth	43.2 cm (17.0 in)	5.1 cm (2.0 in)	44 years	29 of 100 (Routine)
19 January 2024	Pella 1S, US	daily snow depth	45.7 cm (18.0 in)	5.1 cm (2.0 in)	44 years	29 of 100 (Routine)
9 January 2024	Pella 1S, US	daily rain	13.7 mm (0.5 in)	1.0 mm (0.04 in)	122 years	20 of 100 (Routine)
27 February 2023	Pella 1S, US	daily rain	28.4 mm (1.1 in)	0.5 mm (0.02 in)	24 years	17 of 100 (Routine)
9 February 2023	Pella 1S, US	daily rain	17.0 mm (0.7 in)	2.8 mm (0.11 in)	21 years	20 of 100 (Routine)
15 November 2022	Pella 1S, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	123 years	53 of 100 (Notable)

Climate Trend

17 complete years, 1900 to 1924

One stripe for each of 17 complete years at Pella 1S, 1900 to 1924. Blue stripes are years cooler than the station's own mean of 9.9 C (49.9 F); red stripes are warmer. The coolest year was 1917, at 8.3 C (46.9 F), and the warmest was 1921, at 12.0 C (53.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Pella 1S as warming stripes, 1900 to 1924
Year	Annual mean temperature	Difference from the station mean
1900	10.3 C	+0.34 C
1907	10.3 C	+0.33 C
1910	10.0 C	+0.07 C
1911	10.7 C	+0.74 C
1912	8.6 C	-1.34 C
1913	10.8 C	+0.81 C
1914	10.5 C	+0.55 C
1915	9.7 C	-0.21 C
1916	9.2 C	-0.70 C
1917	8.3 C	-1.64 C
1918	10.3 C	+0.40 C
1919	9.9 C	-0.03 C
1920	9.5 C	-0.47 C
1921	12.0 C	+2.03 C
1922	10.8 C	+0.85 C
1923	9.7 C	-0.22 C
1924	8.4 C	-1.54 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1898 to 2026

Yearly extremes at Pella 1S: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1918	36.1 C (97.0 F)	27
Coldest night (TNn)	-35.6 C (-32.1 F)	1912	-27.2 C (-17.0 F)	28
Wettest day (Rx1day)	156.0 mm (6.1 in)	1914	63.0 mm (2.5 in)	107
Wettest five days (Rx5day)	209.4 mm (8.2 in)	2010	99.0 mm (3.9 in)	107
Longest dry spell (CDD)	75 days	1952	25 days	107

Hottest day (TXx)

The hottest day of the year at Pella 1S, 1898 to 2026. The record is 44.4 C (111.9 F) in 1918, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Pella 1S by year
Year	Hottest day (TXx)
1898	35.6 C (96.1 F)
1899	32.8 C (91.0 F)
1900	35.6 C (96.1 F)
1901	43.3 C (109.9 F)
1902	31.1 C (88.0 F)
1903	28.3 C (82.9 F)
1905	35.6 C (96.1 F)
1906	36.7 C (98.1 F)
1907	35.0 C (95.0 F)
1908	37.2 C (99.0 F)
1909	35.0 C (95.0 F)
1910	38.3 C (100.9 F)
1911	41.7 C (107.1 F)
1912	36.7 C (98.1 F)
1913	42.2 C (108.0 F)
1914	38.3 C (100.9 F)
1915	34.4 C (93.9 F)
1916	38.9 C (102.0 F)
1917	39.4 C (102.9 F)
1918	44.4 C (111.9 F)
1919	36.7 C (98.1 F)
1920	34.4 C (93.9 F)
1921	36.1 C (97.0 F)
1922	36.1 C (97.0 F)
1923	36.7 C (98.1 F)
1924	35.0 C (95.0 F)
1925	7.2 C (45.0 F)
1927	n/a
1928	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Pella 1S, 1898 to 2026. The record is -35.6 C (-32.1 F) in 1912, marked on the chart; the median year is -27.2 C (-17.0 F).

Coldest night (TNn) at Pella 1S by year
Year	Coldest night (TNn)
1898	-26.7 C (-16.1 F)
1899	-31.7 C (-25.1 F)
1900	-24.4 C (-11.9 F)
1901	-24.4 C (-11.9 F)
1902	-30.0 C (-22.0 F)
1903	-25.6 C (-14.1 F)
1905	-16.7 C (1.9 F)
1906	-21.1 C (-6.0 F)
1907	-25.6 C (-14.1 F)
1908	-27.8 C (-18.0 F)
1909	-26.7 C (-16.1 F)
1910	-33.3 C (-27.9 F)
1911	-27.2 C (-17.0 F)
1912	-35.6 C (-32.1 F)
1913	-27.2 C (-17.0 F)
1914	-32.8 C (-27.0 F)
1915	-24.4 C (-11.9 F)
1916	-31.1 C (-24.0 F)
1917	-31.7 C (-25.1 F)
1918	-33.3 C (-27.9 F)
1919	-33.3 C (-27.9 F)
1920	-28.3 C (-18.9 F)
1921	-25.6 C (-14.1 F)
1922	-27.8 C (-18.0 F)
1923	-26.1 C (-15.0 F)
1924	-34.4 C (-29.9 F)
1925	-25.0 C (-13.0 F)
1927	n/a
1928	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	-0.6 C (30.9 F)
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Pella 1S, 1898 to 2026. The record is 156.0 mm (6.1 in) in 1914, marked on the chart; the median year is 63.0 mm (2.5 in).

Wettest day (Rx1day) at Pella 1S by year
Year	Wettest day (Rx1day)
1898	43.2 mm (1.7 in)
1899	90.9 mm (3.6 in)
1900	66.0 mm (2.6 in)
1901	57.2 mm (2.3 in)
1902	43.2 mm (1.7 in)
1903	55.9 mm (2.2 in)
1905	58.9 mm (2.3 in)
1906	50.5 mm (2.0 in)
1907	97.8 mm (3.9 in)
1908	104.1 mm (4.1 in)
1909	55.4 mm (2.2 in)
1910	51.3 mm (2.0 in)
1911	77.0 mm (3.0 in)
1912	46.7 mm (1.8 in)
1913	39.4 mm (1.6 in)
1914	156.0 mm (6.1 in)
1915	84.3 mm (3.3 in)
1916	57.4 mm (2.3 in)
1917	77.5 mm (3.1 in)
1918	57.2 mm (2.3 in)
1919	40.6 mm (1.6 in)
1920	84.8 mm (3.3 in)
1921	55.9 mm (2.2 in)
1922	52.1 mm (2.1 in)
1923	135.9 mm (5.4 in)
1924	42.4 mm (1.7 in)
1925	2.5 mm (0.10 in)
1927	20.8 mm (0.8 in)
1928	49.3 mm (1.9 in)
1949	44.5 mm (1.8 in)
1950	54.4 mm (2.1 in)
1951	72.4 mm (2.9 in)
1952	132.3 mm (5.2 in)
1953	36.6 mm (1.4 in)
1954	67.3 mm (2.6 in)
1955	78.7 mm (3.1 in)
1956	31.8 mm (1.3 in)
1957	65.5 mm (2.6 in)
1958	63.5 mm (2.5 in)
1959	67.8 mm (2.7 in)
1960	60.5 mm (2.4 in)
1961	96.5 mm (3.8 in)
1962	83.8 mm (3.3 in)
1963	101.6 mm (4.0 in)
1964	46.2 mm (1.8 in)
1965	53.6 mm (2.1 in)
1966	58.7 mm (2.3 in)
1967	48.5 mm (1.9 in)
1968	41.9 mm (1.6 in)
1969	139.7 mm (5.5 in)
1970	77.7 mm (3.1 in)
1971	51.6 mm (2.0 in)
1972	79.2 mm (3.1 in)
1973	112.0 mm (4.4 in)
1974	109.5 mm (4.3 in)
1975	58.2 mm (2.3 in)
1976	104.1 mm (4.1 in)
1977	51.1 mm (2.0 in)
1978	61.2 mm (2.4 in)
1979	46.0 mm (1.8 in)
1980	41.4 mm (1.6 in)
1981	43.4 mm (1.7 in)
1982	87.1 mm (3.4 in)
1983	68.6 mm (2.7 in)
1984	55.9 mm (2.2 in)
1985	45.7 mm (1.8 in)
1986	99.1 mm (3.9 in)
1987	113.5 mm (4.5 in)
1988	61.0 mm (2.4 in)
1989	76.7 mm (3.0 in)
1990	107.2 mm (4.2 in)
1991	51.6 mm (2.0 in)
1992	48.8 mm (1.9 in)
1993	75.9 mm (3.0 in)
1994	46.2 mm (1.8 in)
1995	56.1 mm (2.2 in)
1996	61.5 mm (2.4 in)
1997	66.5 mm (2.6 in)
1998	63.0 mm (2.5 in)
1999	54.4 mm (2.1 in)
2000	55.4 mm (2.2 in)
2001	61.5 mm (2.4 in)
2002	62.2 mm (2.4 in)
2003	92.7 mm (3.6 in)
2004	78.2 mm (3.1 in)
2005	47.0 mm (1.9 in)
2006	82.0 mm (3.2 in)
2007	94.5 mm (3.7 in)
2008	80.5 mm (3.2 in)
2009	82.8 mm (3.3 in)
2010	89.2 mm (3.5 in)
2011	121.2 mm (4.8 in)
2012	66.0 mm (2.6 in)
2013	139.7 mm (5.5 in)
2014	123.7 mm (4.9 in)
2015	72.4 mm (2.9 in)
2016	91.4 mm (3.6 in)
2017	29.5 mm (1.2 in)
2018	75.2 mm (3.0 in)
2019	56.4 mm (2.2 in)
2020	63.0 mm (2.5 in)
2021	66.0 mm (2.6 in)
2022	106.7 mm (4.2 in)
2023	40.9 mm (1.6 in)
2024	148.8 mm (5.9 in)
2025	68.6 mm (2.7 in)
2026	86.9 mm (3.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Pella 1S, 1898 to 2026. The record is 209.4 mm (8.2 in) in 2010, marked on the chart; the median year is 99.0 mm (3.9 in).

Wettest five days (Rx5day) at Pella 1S by year
Year	Wettest five days (Rx5day)
1898	61.3 mm (2.4 in)
1899	134.8 mm (5.3 in)
1900	135.6 mm (5.3 in)
1901	57.2 mm (2.3 in)
1902	50.3 mm (2.0 in)
1903	144.6 mm (5.7 in)
1905	61.5 mm (2.4 in)
1906	85.3 mm (3.4 in)
1907	108.5 mm (4.3 in)
1908	192.0 mm (7.6 in)
1909	68.8 mm (2.7 in)
1910	82.1 mm (3.2 in)
1911	95.3 mm (3.8 in)
1912	79.7 mm (3.1 in)
1913	75.2 mm (3.0 in)
1914	196.6 mm (7.7 in)
1915	138.1 mm (5.4 in)
1916	79.5 mm (3.1 in)
1917	170.0 mm (6.7 in)
1918	77.2 mm (3.0 in)
1919	126.5 mm (5.0 in)
1920	105.7 mm (4.2 in)
1921	78.5 mm (3.1 in)
1922	76.1 mm (3.0 in)
1923	198.4 mm (7.8 in)
1924	90.7 mm (3.6 in)
1925	2.5 mm (0.10 in)
1927	24.6 mm (1.0 in)
1928	86.9 mm (3.4 in)
1949	71.2 mm (2.8 in)
1950	75.8 mm (3.0 in)
1951	96.5 mm (3.8 in)
1952	160.7 mm (6.3 in)
1953	62.0 mm (2.4 in)
1954	101.1 mm (4.0 in)
1955	106.4 mm (4.2 in)
1956	43.7 mm (1.7 in)
1957	79.7 mm (3.1 in)
1958	112.6 mm (4.4 in)
1959	122.5 mm (4.8 in)
1960	73.0 mm (2.9 in)
1961	135.1 mm (5.3 in)
1962	87.1 mm (3.4 in)
1963	126.7 mm (5.0 in)
1964	119.3 mm (4.7 in)
1965	91.7 mm (3.6 in)
1966	89.3 mm (3.5 in)
1967	81.3 mm (3.2 in)
1968	63.8 mm (2.5 in)
1969	148.1 mm (5.8 in)
1970	106.7 mm (4.2 in)
1971	88.2 mm (3.5 in)
1972	133.3 mm (5.2 in)
1973	112.0 mm (4.4 in)
1974	111.3 mm (4.4 in)
1975	88.2 mm (3.5 in)
1976	130.8 mm (5.1 in)
1977	70.2 mm (2.8 in)
1978	112.8 mm (4.4 in)
1979	64.8 mm (2.6 in)
1980	64.3 mm (2.5 in)
1981	83.8 mm (3.3 in)
1982	119.6 mm (4.7 in)
1983	144.4 mm (5.7 in)
1984	99.1 mm (3.9 in)
1985	77.0 mm (3.0 in)
1986	137.9 mm (5.4 in)
1987	153.6 mm (6.0 in)
1988	88.5 mm (3.5 in)
1989	128.8 mm (5.1 in)
1990	182.9 mm (7.2 in)
1991	99.4 mm (3.9 in)
1992	99.0 mm (3.9 in)
1993	133.0 mm (5.2 in)
1994	65.5 mm (2.6 in)
1995	79.0 mm (3.1 in)
1996	96.9 mm (3.8 in)
1997	80.2 mm (3.2 in)
1998	74.7 mm (2.9 in)
1999	77.8 mm (3.1 in)
2000	113.8 mm (4.5 in)
2001	88.0 mm (3.5 in)
2002	74.4 mm (2.9 in)
2003	103.4 mm (4.1 in)
2004	78.2 mm (3.1 in)
2005	68.8 mm (2.7 in)
2006	97.0 mm (3.8 in)
2007	169.7 mm (6.7 in)
2008	105.6 mm (4.2 in)
2009	104.4 mm (4.1 in)
2010	209.4 mm (8.2 in)
2011	191.6 mm (7.5 in)
2012	72.6 mm (2.9 in)
2013	172.2 mm (6.8 in)
2014	132.1 mm (5.2 in)
2015	139.9 mm (5.5 in)
2016	139.4 mm (5.5 in)
2017	58.0 mm (2.3 in)
2018	161.1 mm (6.3 in)
2019	122.8 mm (4.8 in)
2020	92.2 mm (3.6 in)
2021	100.6 mm (4.0 in)
2022	108.0 mm (4.3 in)
2023	67.7 mm (2.7 in)
2024	194.8 mm (7.7 in)
2025	102.4 mm (4.0 in)
2026	139.5 mm (5.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Pella 1S, 1898 to 2026. The record is 75 days in 1952, marked on the chart; the median year is 25 days.

Longest dry spell (CDD) at Pella 1S by year
Year	Longest dry spell (CDD)
1898	16 days
1899	24 days
1900	35 days
1901	27 days
1902	32 days
1903	6 days
1905	22 days
1906	28 days
1907	25 days
1908	26 days
1909	24 days
1910	33 days
1911	18 days
1912	28 days
1913	30 days
1914	21 days
1915	21 days
1916	26 days
1917	26 days
1918	36 days
1919	35 days
1920	15 days
1921	34 days
1922	27 days
1923	18 days
1924	13 days
1925	15 days
1927	21 days
1928	17 days
1949	30 days
1950	39 days
1951	19 days
1952	75 days
1953	26 days
1954	26 days
1955	19 days
1956	20 days
1957	27 days
1958	30 days
1959	21 days
1960	18 days
1961	18 days
1962	17 days
1963	20 days
1964	33 days
1965	20 days
1966	25 days
1967	45 days
1968	35 days
1969	35 days
1970	19 days
1971	32 days
1972	22 days
1973	19 days
1974	24 days
1975	25 days
1976	30 days
1977	16 days
1978	23 days
1979	14 days
1980	28 days
1981	31 days
1982	17 days
1983	36 days
1984	33 days
1985	41 days
1986	34 days
1987	41 days
1988	43 days
1989	58 days
1990	18 days
1991	31 days
1992	34 days
1993	27 days
1994	28 days
1995	21 days
1996	24 days
1997	23 days
1998	33 days
1999	37 days
2000	28 days
2001	20 days
2002	50 days
2003	35 days
2004	27 days
2005	28 days
2006	20 days
2007	22 days
2008	14 days
2009	24 days
2010	26 days
2011	15 days
2012	25 days
2013	16 days
2014	21 days
2015	23 days
2016	21 days
2017	33 days
2018	24 days
2019	18 days
2020	24 days
2021	34 days
2022	26 days
2023	24 days
2024	23 days
2025	27 days
2026	32 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.

Rainfall Return Levels

88 years, 1899 to 2025

A day with at least 68.3 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 172.5 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Pella 1S: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	68.3 mm (2.7 in)
5 years	93.9 mm (3.7 in)
10 years	111.7 mm (4.4 in)
25 years	135.3 mm (5.3 in)
50 years	153.6 mm (6.0 in)
100 years	172.5 mm (6.8 in)	Longer than the 88 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, 88 years of values from 1899 to 2025.

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: 156.0 mm (6.1 in) in 1914; 148.8 mm (5.9 in) in 2024; 139.7 mm (5.5 in) in 1969.

Download the Data

Data for Pella 1S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pella 1S 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).