Oahe Dam Threshold Days by Year (USC00396170)

18 fixed thresholds counted per year at Oahe Dam (USC00396170): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oahe Dam Thresholds

Oahe Dam: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1977 with 19.
Oahe Dam: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 1976 with 83.
Oahe Dam: days with a maximum temperature at or above 35 C (95 F) in 36 years, most in 1988 with 37.
Oahe Dam: days with a maximum temperature at or above 90 F (32.2 C) in 36 years, most in 1983 with 58.
18 fixed thresholds have at least one qualifying day at Oahe Dam.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Oahe Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 83 in 1976.

Days at or above 30 C (86 F) per year at Oahe Dam
Year	Days	Decade average
1961	77	58
1962	41	58
1963	75	58
1964	62	58
1965	51	58
1966	66	58
1967	50	58
1968	42	58
1969	58	58
1970	70	59.4
1971	56	59.4
1972	45	59.4
1973	64	59.4
1974	60	59.4
1975	57	59.4
1976	83	59.4
1977	49	59.4
1978	61	59.4
1979	49	59.4
1980	71	59.8
1981	45	59.8
1982	50	59.8
1983	67	59.8
1984	62	59.8
1985	55	59.8
1986	42	59.8
1987	64	59.8
1988	76	59.8
1989	66	59.8
1990	71	69
1991	67	69
2022	71	59.4
2023	65	59.4
2024	57	59.4
2025	52	59.4
2026	52	59.4

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

First to last qualifying date each year at Oahe Dam
Year	First date	Last date
1961	1961-04-20	1961-10-07
1962	1962-04-25	1962-10-15
1963	1963-05-08	1963-10-14
1964	1964-04-17	1964-10-15
1965	1965-04-30	1965-10-16
1966	1966-05-05	1966-09-13
1967	1967-05-23	1967-10-04
1968	1968-05-01	1968-09-15
1969	1969-05-15	1969-09-28
1970	1970-04-08	1970-10-06
1971	1971-04-08	1971-09-14
1972	1972-05-17	1972-09-23
1973	1973-05-19	1973-10-08
1974	1974-06-04	1974-10-22
1975	1975-05-17	1975-10-08
1976	1976-05-12	1976-10-03
1977	1977-04-10	1977-09-15
1978	1978-05-25	1978-09-27
1979	1979-04-24	1979-10-01
1980	1980-04-21	1980-10-09
1981	1981-06-01	1981-09-29
1982	1982-05-04	1982-09-11
1983	1983-06-10	1983-09-28
1984	1984-05-17	1984-09-22
1985	1985-04-29	1985-09-06
1986	1986-05-04	1986-08-30
1987	1987-04-18	1987-10-03
1988	1988-03-27	1988-09-10
1989	1989-04-22	1989-09-30
1990	1990-04-23	1990-11-01
1991	1991-04-05	1991-10-17
2022	2022-05-28	2022-10-01
2023	2023-04-12	2023-10-01
2024	2024-04-13	2024-10-17
2025	2025-05-10	2025-10-03
2026	2026-04-22	2026-08-31

Every Fixed Threshold

Fixed thresholds at Oahe Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	83	1976	52
35 C (95 F): Days	36	37	1988	18
40 C (104 F): Days	30	12	1988	1
45 C (113 F): Days	1	1	1988	1
90 F (32.2 C): Days	36	58	1983	33
100 F (37.8 C): Days	36	23	1988	6
110 F (43.3 C): Days	8	2	1988	1
0 C (32 F): Ice days (max	36	92	1978	23
0 C (32 F): Frost days (min	35	177	2023	108
-10 C (14 F): Days with min	35	90	1978	30
-20 C (-4 F): Days with min	35	40	1978	6
-30 C (-22 F): Days with min	8	5	1989	4
20 C (68 F): Tropical nights (min	34	22	1988	1
25 C (77 F): Days with min	4	1	1963	1
10 mm (0.39 in): Days with 10 mm or more rain	38	19	1977	5
25 mm (0.98 in): Days with 25 mm or more rain	35	7	1991	2
50 mm (1.97 in): Days with 50 mm or more rain	9	2	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	7	3	1962	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Oahe Dam 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Oahe Dam Threshold Days by Year (USC00396170)

Key Facts for Oahe Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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