Roy 24 NE Mobridge Threshold Days by Year (USC00247234)

18 fixed thresholds counted per year at Roy 24 NE Mobridge (USC00247234): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roy 24 NE Mobridge Thresholds

Roy 24 NE Mobridge: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1986 with 15.
Roy 24 NE Mobridge: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 1970 with 205.
Roy 24 NE Mobridge: nights with a minimum temperature at or below -10 C (14 F) in 28 years, most in 1978 with 100.
Roy 24 NE Mobridge: nights with a minimum temperature at or below -20 C (-4 F) in 28 years, most in 1978 with 50.
18 fixed thresholds have at least one qualifying day at Roy 24 NE Mobridge.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Roy 24 NE Mobridge with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1988.

Days at or above 30 C (86 F) per year at Roy 24 NE Mobridge
Year	Days	Decade average
1965	41	62.4
1966	75	62.4
1967	76	62.4
1968	49	62.4
1969	71	62.4
1970	77	58.8
1971	71	58.8
1972	58	58.8
1973	68	58.8
1974	53	58.8
1975	40	58.8
1976	61	58.8
1977	49	58.8
1978	44	58.8
1979	67	58.8
1980	56	58.4
1981	67	58.4
1982	43	58.4
1983	56	58.4
1984	66	58.4
1985	50	58.4
1986	50	58.4
1987	57	58.4
1988	81	58.4
1990	67	65
1991	63	65

For each year, a bar from the first to the last day at Roy 24 NE Mobridge meeting 30 C (86 F).

First to last qualifying date each year at Roy 24 NE Mobridge
Year	First date	Last date
1965	1965-06-10	1965-09-01
1966	1966-05-03	1966-09-23
1967	1967-05-17	1967-09-30
1968	1968-04-29	1968-09-12
1969	1969-05-13	1969-09-19
1970	1970-05-17	1970-10-04
1971	1971-05-12	1971-10-10
1972	1972-05-15	1972-09-18
1973	1973-05-15	1973-09-30
1974	1974-06-12	1974-10-02
1975	1975-05-15	1975-10-03
1976	1976-05-13	1976-10-02
1977	1977-04-26	1977-09-07
1978	1978-05-14	1978-09-25
1979	1979-05-26	1979-10-04
1980	1980-04-20	1980-10-08
1981	1981-05-01	1981-09-19
1982	1982-06-21	1982-09-09
1983	1983-05-25	1983-09-26
1984	1984-05-14	1984-09-18
1985	1985-05-01	1985-08-30
1986	1986-05-20	1986-08-30
1987	1987-04-27	1987-10-03
1988	1988-05-13	1988-09-06
1990	1990-06-09	1990-10-25
1991	1991-06-10	1991-10-16

Every Fixed Threshold

Fixed thresholds at Roy 24 NE Mobridge
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	81	1988	63
35 C (95 F): Days	26	40	1988	20
40 C (104 F): Days	14	6	1969	3
90 F (32.2 C): Days	26	63	1988	44
100 F (37.8 C): Days	25	17	1971	5
110 F (43.3 C): Days	2	1	1983	1
0 C (32 F): Ice days (max	26	87	1978	27
0 C (32 F): Frost days (min	28	205	1970	184
-10 C (14 F): Days with min	28	100	1978	63
-20 C (-4 F): Days with min	28	50	1978	9
-30 C (-22 F): Days with min	26	16	1972	1
-40 C (-40 F): Days with min	7	2	1969	2
20 C (68 F): Tropical nights (min	17	5	1988	1
10 mm (0.39 in): Days with 10 mm or more rain	29	15	1986	7
25 mm (0.98 in): Days with 25 mm or more rain	22	6	1974	4
50 mm (1.97 in): Days with 50 mm or more rain	5	1	1973	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	8	1971	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

Data for Roy 24 NE Mobridge 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).

Roy 24 NE Mobridge Threshold Days by Year (USC00247234)

Key Facts for Roy 24 NE Mobridge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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