Rocky Mtn House Threshold Days by Year (CA003015520)

13 fixed thresholds counted per year at Rocky Mtn House (CA003015520): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rocky Mtn House Thresholds

Rocky Mtn House: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 1951 with 116.
Rocky Mtn House: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1950 with 234.
Rocky Mtn House: nights with a minimum temperature at or below -10 C (14 F) in 33 years, most in 1951 with 116.
Rocky Mtn House: nights with a minimum temperature at or below -20 C (-4 F) in 33 years, most in 1951 with 53.
13 fixed thresholds have at least one qualifying day at Rocky Mtn House.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Rocky Mtn House with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1961.

Days at or above 30 C (86 F) per year at Rocky Mtn House
Year	Days	Decade average
1945	1	2
1946	2	2
1949	3	2
1950	3	2
1951	2	2
1952	1	2
1954	1	2
1955	4	2
1956	3	2
1958	1	2
1959	1	2
1960	5	2.8
1961	7	2.8
1964	1	2.8
1965	2	2.8
1966	1	2.8
1967	4	2.8
1968	1	2.8
1969	1	2.8
1970	4	3.4
1971	5	3.4
1972	1	3.4
1973	5	3.4
1974	2	3.4
1975	5	3.4
1977	2	3.4

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

First to last qualifying date each year at Rocky Mtn House
Year	First date	Last date
1945	1945-07-13	1945-07-13
1946	1946-07-21	1946-08-22
1949	1949-06-06	1949-07-15
1950	1950-07-25	1950-09-22
1951	1951-06-14	1951-08-03
1952	1952-09-25	1952-09-25
1954	1954-07-05	1954-07-05
1955	1955-07-14	1955-09-02
1956	1956-05-31	1956-08-14
1958	1958-08-25	1958-08-25
1959	1959-07-23	1959-07-23
1960	1960-07-07	1960-07-30
1961	1961-06-03	1961-08-15
1964	1964-07-12	1964-07-12
1965	1965-07-26	1965-08-01
1966	1966-08-25	1966-08-25
1967	1967-08-18	1967-09-27
1968	1968-07-05	1968-07-05
1969	1969-06-18	1969-06-18
1970	1970-06-02	1970-08-07
1971	1971-07-30	1971-08-20
1972	1972-05-30	1972-05-30
1973	1973-06-22	1973-08-13
1974	1974-06-23	1974-08-04
1975	1975-07-04	1975-07-27
1977	1977-06-07	1977-07-21

Every Fixed Threshold

Fixed thresholds at Rocky Mtn House
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	7	1961	2
90 F (32.2 C): Days	7	1	1946	1
0 C (32 F): Ice days (max	33	116	1951	59
0 C (32 F): Frost days (min	33	234	1950	194
-10 C (14 F): Days with min	33	116	1951	79
-20 C (-4 F): Days with min	33	53	1951	27
-30 C (-22 F): Days with min	33	22	1969	5
-40 C (-40 F): Days with min	7	5	1950	1
10 mm (0.39 in): Days with 10 mm or more rain	33	22	1965	18
25 mm (0.98 in): Days with 25 mm or more rain	26	6	1945	2
50 mm (1.97 in): Days with 50 mm or more rain	10	2	1946	1
10 cm (3.9 in): Days with 10 cm or more snowfall	30	7	1945	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

Data for Rocky Mtn House 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).

Rocky Mtn House Threshold Days by Year (CA003015520)

Key Facts for Rocky Mtn House Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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