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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Blue Ridge Resvr Dam Threshold Days by Year

13 fixed thresholds counted per year at Blue Ridge Resvr Dam (USC00091029): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blue Ridge Resvr Dam Thresholds

  • Blue Ridge Resvr Dam: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1923 with 60.
  • Blue Ridge Resvr Dam: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1922 with 22.
  • Blue Ridge Resvr Dam: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1922 with 5.
  • Blue Ridge Resvr Dam: days with a maximum temperature at or above 30 C (86 F) in 8 years, most in 1925 with 107.
  • 13 fixed thresholds have at least one qualifying day at Blue Ridge Resvr Dam.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Blue Ridge Resvr Dam Days per year at Blue Ridge Resvr Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 107 in 1925. 0501001501921: 741922: 411923: 211924: 621925: 1071926: 881927: 721928: 5119211922192319241925192619271928
Days per year at Blue Ridge Resvr Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 107 in 1925.
Days at or above 30 C (86 F) per year at Blue Ridge Resvr Dam
YearDaysDecade average
19217464.5
19224164.5
19232164.5
19246264.5
192510764.5
19268864.5
19277264.5
19285164.5
First to last qualifying date each year at Blue Ridge Resvr Dam For each year, a bar from the first to the last day at Blue Ridge Resvr Dam meeting 30 C (86 F). 1921: 24 May 1921 to 25 September 19211922: 13 June 1922 to 16 September 19221923: 16 June 1923 to 6 September 19231924: 7 June 1924 to 3 September 19241925: 20 April 1925 to 28 September 19251926: 3 May 1926 to 4 October 19261927: 17 April 1927 to 5 October 19271928: 12 May 1928 to 14 October 192819211922192319241925192619271928JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blue Ridge Resvr Dam meeting 30 C (86 F).
First to last qualifying date each year at Blue Ridge Resvr Dam
YearFirst dateLast date
19211921-05-241921-09-25
19221922-06-131922-09-16
19231923-06-161923-09-06
19241924-06-071924-09-03
19251925-04-201925-09-28
19261926-05-031926-10-04
19271927-04-171927-10-05
19281928-05-121928-10-14

Every Fixed Threshold

Fixed thresholds at Blue Ridge Resvr Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8107192551
35 C (95 F): Days41919252
90 F (32.2 C): Days877192511
100 F (37.8 C): Days2519251
0 C (32 F): Ice days (max6619243
0 C (32 F): Frost days (min81161926100
-10 C (14 F): Days with min719192614
-20 C (-4 F): Days with min2119241
20 C (68 F): Tropical nights (min81019261
10 mm (0.39 in): Days with 10 mm or more rain2160192354
25 mm (0.98 in): Days with 25 mm or more rain2122192217
50 mm (1.97 in): Days with 50 mm or more rain21519225
100 mm (3.94 in): Days with 100 mm or more rain5219511

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

  • Data for Blue Ridge Resvr Dam 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).