Deer Lodge Threshold Days by Year (USC00242273)

16 fixed thresholds counted per year at Deer Lodge (USC00242273): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Deer Lodge Thresholds

Deer Lodge: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1919 with 81.
Deer Lodge: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1955 with 77.
Deer Lodge: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 1899 with 237.
Deer Lodge: nights with a minimum temperature at or below -10 C (14 F) in 37 years, most in 1922 with 92.
16 fixed thresholds have at least one qualifying day at Deer Lodge.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Deer Lodge with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1919.

Days at or above 30 C (86 F) per year at Deer Lodge
Year	Days	Decade average
1899	24	24
1902	1	2
1903	3	2
1904	2	2
1917	32	39.3
1918	5	39.3
1919	81	39.3
1920	27	29.3
1922	19	29.3
1923	24	29.3
1929	47	29.3
1931	36	27.9
1932	26	27.9
1933	29	27.9
1934	24	27.9
1935	29	27.9
1936	36	27.9
1937	22	27.9
1938	19	27.9
1939	30	27.9
1940	42	22.1
1941	17	22.1
1942	22	22.1
1943	21	22.1
1944	7	22.1
1945	27	22.1
1946	31	22.1
1947	26	22.1
1948	8	22.1
1949	20	22.1
1950	11	20.4
1951	17	20.4
1952	14	20.4
1953	27	20.4
1954	25	20.4
1955	28	20.4
1956	26	20.4
1958	15	20.4

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

First to last qualifying date each year at Deer Lodge
Year	First date	Last date
1899	1899-06-24	1899-09-29
1902	1902-06-09	1902-06-09
1903	1903-08-16	1903-08-20
1904	1904-08-14	1904-08-15
1917	1917-05-15	1917-09-10
1918	1918-07-08	1918-09-20
1919	1919-05-18	1919-09-20
1920	1920-07-03	1920-09-17
1922	1922-06-20	1922-09-20
1923	1923-06-12	1923-09-07
1929	1929-05-23	1929-09-02
1931	1931-05-13	1931-09-04
1932	1932-06-21	1932-08-19
1933	1933-06-12	1933-09-05
1934	1934-05-24	1934-08-28
1935	1935-06-22	1935-09-10
1936	1936-05-14	1936-09-21
1937	1937-06-28	1937-09-17
1938	1938-07-10	1938-09-21
1939	1939-06-28	1939-08-27
1940	1940-06-11	1940-09-11
1941	1941-06-22	1941-08-10
1942	1942-07-02	1942-08-24
1943	1943-07-06	1943-08-21
1944	1944-06-30	1944-09-07
1945	1945-06-21	1945-09-03
1946	1946-07-01	1946-09-14
1947	1947-05-08	1947-09-04
1948	1948-06-29	1948-09-14
1949	1949-06-10	1949-09-23
1950	1950-06-30	1950-09-04
1951	1951-07-13	1951-08-03
1952	1952-07-04	1952-09-26
1953	1953-06-11	1953-09-12
1954	1954-06-22	1954-09-10
1955	1955-06-20	1955-09-07
1956	1956-05-31	1956-09-09
1958	1958-07-22	1958-09-11

Every Fixed Threshold

Fixed thresholds at Deer Lodge
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	81	1919	15
35 C (95 F): Days	17	18	1919	2
90 F (32.2 C): Days	35	51	1919	6
100 F (37.8 C): Days	3	8	1919	1
0 C (32 F): Ice days (max	38	77	1955	30
0 C (32 F): Frost days (min	37	237	1899	200
-10 C (14 F): Days with min	37	92	1922	58
-20 C (-4 F): Days with min	37	33	1922	2
-30 C (-22 F): Days with min	25	8	1899	4
-40 C (-40 F): Days with min	1	2	1899	2
20 C (68 F): Tropical nights (min	2	1	1899	1
10 mm (0.39 in): Days with 10 mm or more rain	33	10	1922	5
25 mm (0.98 in): Days with 25 mm or more rain	14	2	1923	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	6	1917	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Deer Lodge 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).

Deer Lodge Threshold Days by Year (USC00242273)

Key Facts for Deer Lodge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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