Oglala 1S Threshold Days by Year (USC00396227)

18 fixed thresholds counted per year at Oglala 1S (USC00396227): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oglala 1S Thresholds

Oglala 1S: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 2013 with 22.
Oglala 1S: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1999 with 6.
Oglala 1S: nights with a minimum temperature at or below 0 C (32 F) in 15 years, most in 2013 with 174.
Oglala 1S: nights with a minimum temperature at or below -10 C (14 F) in 15 years, most in 2008 with 61.
18 fixed thresholds have at least one qualifying day at Oglala 1S.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Oglala 1S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 2000.

Days at or above 30 C (86 F) per year at Oglala 1S
Year	Days	Decade average
1999	43	43
2000	76	65.6
2001	65	65.6
2002	68	65.6
2003	73	65.6
2004	58	65.6
2005	59	65.6
2008	60	65.6
2010	64	55.5
2011	58	55.5
2012	67	55.5
2013	46	55.5
2014	44	55.5
2015	54	55.5

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

First to last qualifying date each year at Oglala 1S
Year	First date	Last date
1999	1999-05-30	1999-10-07
2000	2000-05-05	2000-09-20
2001	2001-04-29	2001-10-02
2002	2002-05-31	2002-09-17
2003	2003-04-13	2003-10-20
2004	2004-05-06	2004-09-20
2005	2005-04-18	2005-10-03
2008	2008-04-16	2008-11-03
2010	2010-05-29	2010-10-08
2011	2011-06-03	2011-10-05
2012	2012-04-24	2012-10-03
2013	2013-05-14	2013-10-01
2014	2014-05-29	2014-09-28
2015	2015-06-03	2015-10-12

Every Fixed Threshold

Fixed thresholds at Oglala 1S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	76	2000	54
35 C (95 F): Days	14	40	2003	10
40 C (104 F): Days	7	5	2012	5
90 F (32.2 C): Days	14	60	2003	30
100 F (37.8 C): Days	13	15	2002	2
110 F (43.3 C): Days	1	1	2003	1
0 C (32 F): Ice days (max	14	47	2010	39
0 C (32 F): Frost days (min	15	174	2013	145
-10 C (14 F): Days with min	15	61	2008	53
-20 C (-4 F): Days with min	15	15	2014	8
-30 C (-22 F): Days with min	4	2	2010	1
20 C (68 F): Tropical nights (min	15	18	2003	2
10 mm (0.39 in): Days with 10 mm or more rain	17	22	2013	21
25 mm (0.98 in): Days with 25 mm or more rain	16	6	1999	6
50 mm (1.97 in): Days with 50 mm or more rain	8	1	1999	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	7	2000	6
25 cm (9.8 in): Days with 25 cm or more snowfall	4	3	2013	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2013	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1999.

Download the Data

Data for Oglala 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Oglala 1S Threshold Days by Year (USC00396227)

Key Facts for Oglala 1S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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