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

Dell Threshold Days by Year (USC00242309)

11 fixed thresholds counted per year at Dell (USC00242309): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dell Thresholds

  • Dell: days with 10 mm (0.39 in) or more of precipitation in 12 years, most in 1957 with 9.
  • Dell: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 1957 with 4.
  • Dell: nights with a minimum temperature at or below 0 C (32 F) in 4 years, most in 1920 with 236.
  • Dell: nights with a minimum temperature at or below -10 C (14 F) in 4 years, most in 1920 with 107.
  • 11 fixed thresholds have at least one qualifying day at Dell.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Dell Days per year at Dell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1899. 0510151899: 121918: 71920: 2189919181920
Days per year at Dell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1899.
Days at or above 30 C (86 F) per year at Dell
YearDaysDecade average
18991212
191877
192022
First to last qualifying date each year at Dell For each year, a bar from the first to the last day at Dell meeting 30 C (86 F). 1899: 17 June 1899 to 9 August 18991918: 9 June 1918 to 31 July 19181920: 15 August 1920 to 16 August 1920189919181920JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dell meeting 30 C (86 F).
First to last qualifying date each year at Dell
YearFirst dateLast date
18991899-06-171899-08-09
19181918-06-091918-07-31
19201920-08-151920-08-16

Every Fixed Threshold

Fixed thresholds at Dell
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days31218992
90 F (32.2 C): Days2618991
0 C (32 F): Ice days (max383192083
0 C (32 F): Frost days (min42361920236
-10 C (14 F): Days with min41071920107
-20 C (-4 F): Days with min424191819
-30 C (-22 F): Days with min4618991
10 mm (0.39 in): Days with 10 mm or more rain12919579
25 mm (0.98 in): Days with 25 mm or more rain2219182
10 cm (3.9 in): Days with 10 cm or more snowfall9419574
25 cm (9.8 in): Days with 25 cm or more snowfall2119521

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 Dell 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).