Pella 1S Threshold Days by Year (USC00136527)

19 fixed thresholds counted per year at Pella 1S (USC00136527): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pella 1S Thresholds

Pella 1S: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1951 with 46.
Pella 1S: days with 25 mm (0.98 in) or more of precipitation in 89 years, most in 2007 with 17.
Pella 1S: days with 50 mm (1.97 in) or more of precipitation in 72 years, most in 2010 with 7.
Pella 1S: days with 10 cm (3.9 in) or more of snowfall in 66 years, most in 1979 with 6.
19 fixed thresholds have at least one qualifying day at Pella 1S.

Days at or above 30 C (86 F)

17 years with a qualifying day

Days per year at Pella 1S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 1911.

Days at or above 30 C (86 F) per year at Pella 1S
Year	Days	Decade average
1900	74	61.5
1907	49	61.5
1910	64	54.9
1911	76	54.9
1912	47	54.9
1913	71	54.9
1914	72	54.9
1915	15	54.9
1916	57	54.9
1917	38	54.9
1918	53	54.9
1919	56	54.9
1920	41	41.2
1921	57	41.2
1922	52	41.2
1923	32	41.2
1924	24	41.2

For each year, a bar from the first to the last day at Pella 1S meeting 30 C (86 F).

First to last qualifying date each year at Pella 1S
Year	First date	Last date
1900	1900-05-14	1900-10-15
1907	1907-03-25	1907-09-19
1910	1910-03-23	1910-10-16
1911	1911-05-09	1911-09-14
1912	1912-05-22	1912-10-05
1913	1913-05-28	1913-09-10
1914	1914-05-10	1914-09-16
1915	1915-04-16	1915-09-13
1916	1916-04-12	1916-10-08
1917	1917-05-17	1917-09-15
1918	1918-05-03	1918-10-15
1919	1919-05-30	1919-10-02
1920	1920-06-10	1920-09-24
1921	1921-05-19	1921-09-22
1922	1922-05-10	1922-10-05
1923	1923-04-29	1923-08-26
1924	1924-05-05	1924-08-29

Every Fixed Threshold

Fixed thresholds at Pella 1S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	17	76	1911	24
35 C (95 F): Days	15	27	1911	1
40 C (104 F): Days	3	5	1913	4
90 F (32.2 C): Days	17	52	1913	13
100 F (37.8 C): Days	7	12	1913	7
110 F (43.3 C): Days	1	1	1918	1
0 C (32 F): Ice days (max	17	56	1900	55
0 C (32 F): Frost days (min	17	153	1923	130
-10 C (14 F): Days with min	17	65	1917	52
-20 C (-4 F): Days with min	17	33	1912	20
-30 C (-22 F): Days with min	9	3	1910	2
20 C (68 F): Tropical nights (min	17	36	1913	10
25 C (77 F): Days with min	10	3	1917	1
10 mm (0.39 in): Days with 10 mm or more rain	89	46	1951	35
25 mm (0.98 in): Days with 25 mm or more rain	89	17	2007	14
50 mm (1.97 in): Days with 50 mm or more rain	72	7	2010	3
100 mm (3.94 in): Days with 100 mm or more rain	15	3	2014	1
10 cm (3.9 in): Days with 10 cm or more snowfall	66	6	1979	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	1	1921	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Pella 1S Threshold Days by Year (USC00136527)

Key Facts for Pella 1S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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