Alamosa Threshold Days by Year (USC00050125)

12 fixed thresholds counted per year at Alamosa (USC00050125): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alamosa Thresholds

Alamosa: days with a maximum temperature at or below 0 C (32 F) in 17 years, most in 1939 with 55.
Alamosa: nights with a minimum temperature at or below 0 C (32 F) in 17 years, most in 1945 with 250.
Alamosa: nights with a minimum temperature at or below -10 C (14 F) in 17 years, most in 1949 with 139.
Alamosa: nights with a minimum temperature at or below -20 C (-4 F) in 17 years, most in 1944 with 57.
12 fixed thresholds have at least one qualifying day at Alamosa.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Alamosa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1946.

Days at or above 30 C (86 F) per year at Alamosa
Year	Days	Decade average
1933	4	9.7
1934	21	9.7
1935	5	9.7
1936	14	9.7
1937	9	9.7
1938	6	9.7
1939	9	9.7
1940	14	12.9
1942	6	12.9
1943	12	12.9
1944	13	12.9
1945	17	12.9
1946	22	12.9
1947	12	12.9
1948	19	12.9
1949	1	12.9

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

First to last qualifying date each year at Alamosa
Year	First date	Last date
1933	1933-06-11	1933-09-07
1934	1934-07-02	1934-08-14
1935	1935-06-20	1935-07-29
1936	1936-06-18	1936-08-25
1937	1937-06-20	1937-08-15
1938	1938-07-31	1938-08-23
1939	1939-06-15	1939-07-21
1940	1940-06-25	1940-08-19
1942	1942-07-11	1942-07-16
1943	1943-06-23	1943-08-02
1944	1944-06-20	1944-08-16
1945	1945-06-25	1945-09-07
1946	1946-06-05	1946-08-07
1947	1947-06-15	1947-08-09
1948	1948-07-07	1948-09-05
1949	1949-06-16	1949-06-16

Every Fixed Threshold

Fixed thresholds at Alamosa
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	22	1946	1
90 F (32.2 C): Days	2	3	1934	1
0 C (32 F): Ice days (max	17	55	1939	33
0 C (32 F): Frost days (min	17	250	1945	237
-10 C (14 F): Days with min	17	139	1949	139
-20 C (-4 F): Days with min	17	57	1944	42
-30 C (-22 F): Days with min	11	9	1944	2
-40 C (-40 F): Days with min	1	1	1948	1
10 mm (0.39 in): Days with 10 mm or more rain	16	8	1938	1
25 mm (0.98 in): Days with 25 mm or more rain	5	3	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	5	1940	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1938	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.

Download the Data

Data for Alamosa 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).

Alamosa Threshold Days by Year (USC00050125)

Key Facts for Alamosa Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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