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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Hemphill Threshold Days by Year (USC00414076)

15 fixed thresholds counted per year at Hemphill (USC00414076): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hemphill Thresholds

  • Hemphill: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1991 with 54.
  • Hemphill: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 1973 with 26.
  • Hemphill: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1989 with 12.
  • Hemphill: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1972 with 3.
  • 15 fixed thresholds have at least one qualifying day at Hemphill.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Hemphill Days per year at Hemphill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 150 in 1972. 0501001501968: 1201969: 1381970: 1351971: 1351972: 1501973: 133196819691970197119721973
Days per year at Hemphill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 150 in 1972.
Days at or above 30 C (86 F) per year at Hemphill
YearDaysDecade average
1968120129
1969138129
1970135138.3
1971135138.3
1972150138.3
1973133138.3
First to last qualifying date each year at Hemphill For each year, a bar from the first to the last day at Hemphill meeting 30 C (86 F). 1968: 14 May 1968 to 31 October 19681969: 16 May 1969 to 8 November 19691970: 23 April 1970 to 27 October 19701971: 20 April 1971 to 3 November 19711972: 8 April 1972 to 2 November 19721973: 12 March 1973 to 2 November 1973196819691970197119721973JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hemphill meeting 30 C (86 F).
First to last qualifying date each year at Hemphill
YearFirst dateLast date
19681968-05-141968-10-31
19691969-05-161969-11-08
19701970-04-231970-10-27
19711971-04-201971-11-03
19721972-04-081972-11-02
19731973-03-121973-11-02

Every Fixed Threshold

Fixed thresholds at Hemphill
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days61501972133
35 C (95 F): Days652196922
40 C (104 F): Days1119691
90 F (32.2 C): Days61191969101
100 F (37.8 C): Days31219695
0 C (32 F): Ice days (max4119701
0 C (32 F): Frost days (min657197357
-10 C (14 F): Days with min3319733
20 C (68 F): Tropical nights (min696197068
25 C (77 F): Days with min2619691
10 mm (0.39 in): Days with 10 mm or more rain2254199154
25 mm (0.98 in): Days with 25 mm or more rain2226197326
50 mm (1.97 in): Days with 50 mm or more rain221219896
100 mm (3.94 in): Days with 100 mm or more rain9319721
200 mm (7.87 in): Days with 200 mm or more rain1119811

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Hemphill 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 . Last revised (2025-12-31).