Rose 10 WNW Threshold Days by Year (USC00257318)

17 fixed thresholds counted per year at Rose 10 WNW (USC00257318): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rose 10 WNW Thresholds

Rose 10 WNW: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1963 with 78.
Rose 10 WNW: days with a maximum temperature at or above 90 F (32.2 C) in 23 years, most in 1980 with 46.
Rose 10 WNW: days with a maximum temperature at or below 0 C (32 F) in 23 years, most in 1978 with 87.
Rose 10 WNW: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1984 with 186.
17 fixed thresholds have at least one qualifying day at Rose 10 WNW.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Rose 10 WNW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1963.

Days at or above 30 C (86 F) per year at Rose 10 WNW
Year	Days	Decade average
1963	78	61.5
1965	45	61.5
1974	45	46
1975	57	46
1976	52	46
1977	33	46
1978	49	46
1979	40	46
1980	69	49
1981	41	49
1982	41	49
1983	60	49
1984	45	49
1985	46	49
1986	32	49
1987	56	49
1988	59	49
1989	41	49
1990	50	35.2
1991	53	35.2
1992	17	35.2
1993	14	35.2
1994	42	35.2

For each year, a bar from the first to the last day at Rose 10 WNW meeting 30 C (86 F).

First to last qualifying date each year at Rose 10 WNW
Year	First date	Last date
1963	1963-04-01	1963-10-19
1965	1965-04-29	1965-10-09
1974	1974-06-19	1974-09-27
1975	1975-05-05	1975-10-05
1976	1976-05-20	1976-10-01
1977	1977-04-11	1977-09-09
1978	1978-05-25	1978-10-21
1979	1979-05-07	1979-10-01
1980	1980-04-21	1980-10-10
1981	1981-04-27	1981-09-24
1982	1982-06-29	1982-09-23
1983	1983-05-27	1983-09-28
1984	1984-06-01	1984-09-20
1985	1985-04-12	1985-09-19
1986	1986-05-05	1986-08-31
1987	1987-04-18	1987-10-05
1988	1988-05-18	1988-09-26
1989	1989-04-21	1989-10-14
1990	1990-04-23	1990-10-06
1991	1991-04-06	1991-10-17
1992	1992-05-01	1992-10-04
1993	1993-06-22	1993-10-07
1994	1994-04-19	1994-09-20

Every Fixed Threshold

Fixed thresholds at Rose 10 WNW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	78	1963	42
35 C (95 F): Days	22	25	1980	1
40 C (104 F): Days	5	2	1980	1
90 F (32.2 C): Days	23	46	1980	13
100 F (37.8 C): Days	14	11	1980	5
110 F (43.3 C): Days	1	1	1990	1
0 C (32 F): Ice days (max	23	87	1978	51
0 C (32 F): Frost days (min	23	186	1984	163
-10 C (14 F): Days with min	23	99	1978	60
-20 C (-4 F): Days with min	22	37	1978	15
-30 C (-22 F): Days with min	14	6	1983	2
20 C (68 F): Tropical nights (min	16	8	1963	5
10 mm (0.39 in): Days with 10 mm or more rain	21	31	1977	17
25 mm (0.98 in): Days with 25 mm or more rain	21	10	1977	2
50 mm (1.97 in): Days with 50 mm or more rain	9	2	1974	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	7	1983	1
25 cm (9.8 in): Days with 25 cm or more snowfall	5	2	1975	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

Data for Rose 10 WNW 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).

Rose 10 WNW Threshold Days by Year (USC00257318)

Key Facts for Rose 10 WNW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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