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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Beltzville Dam Threshold Days by Year (USC00360560)

15 fixed thresholds counted per year at Beltzville Dam (USC00360560): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Beltzville Dam Thresholds

  • Beltzville Dam: days with 10 cm (3.9 in) or more of snowfall in 20 years, most in 1975 with 3.
  • Beltzville Dam: days with a maximum temperature at or above 30 C (86 F) in 13 years, most in 1980 with 54.
  • Beltzville Dam: days with a maximum temperature at or above 90 F (32.2 C) in 13 years, most in 1980 with 28.
  • Beltzville Dam: days with a maximum temperature at or below 0 C (32 F) in 13 years, most in 1976 with 44.
  • 15 fixed thresholds have at least one qualifying day at Beltzville Dam.
13 years with a qualifying day
Days at or above 30 C (86 F) per year at Beltzville Dam Days per year at Beltzville Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 54 in 1980. 02040601973: 361974: 191975: 221976: 251977: 301979: 231980: 541981: 182022: 262023: 162024: 312025: 422026: 221973197519771980202220242026
Days per year at Beltzville Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 54 in 1980.
Days at or above 30 C (86 F) per year at Beltzville Dam
YearDaysDecade average
19733625.8
19741925.8
19752225.8
19762525.8
19773025.8
19792325.8
19805436
19811836
20222627.4
20231627.4
20243127.4
20254227.4
20262227.4
First to last qualifying date each year at Beltzville Dam For each year, a bar from the first to the last day at Beltzville Dam meeting 30 C (86 F). 1973: 5 June 1973 to 6 September 19731974: 30 April 1974 to 3 August 19741975: 21 May 1975 to 27 August 19751976: 18 April 1976 to 15 September 19761977: 13 April 1977 to 3 September 19771979: 10 May 1979 to 23 October 19791980: 24 May 1980 to 23 September 19801981: 26 May 1981 to 15 September 19812022: 22 May 2022 to 5 September 20222023: 14 April 2023 to 8 September 20232024: 30 April 2024 to 29 August 20242025: 6 June 2025 to 19 September 20252026: 16 April 2026 to 4 September 20261973197519771980202220242026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Beltzville Dam meeting 30 C (86 F).
First to last qualifying date each year at Beltzville Dam
YearFirst dateLast date
19731973-06-051973-09-06
19741974-04-301974-08-03
19751975-05-211975-08-27
19761976-04-181976-09-15
19771977-04-131977-09-03
19791979-05-101979-10-23
19801980-05-241980-09-23
19811981-05-261981-09-15
20222022-05-222022-09-05
20232023-04-142023-09-08
20242024-04-302024-08-29
20252025-06-062025-09-19
20262026-04-162026-09-04

Every Fixed Threshold

Fixed thresholds at Beltzville Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1354198022
35 C (95 F): Days4519802
90 F (32.2 C): Days132819806
100 F (37.8 C): Days1119801
0 C (32 F): Ice days (max1344197626
0 C (32 F): Frost days (min13162197482
-10 C (14 F): Days with min1357198020
-20 C (-4 F): Days with min81119795
20 C (68 F): Tropical nights (min1215202511
10 mm (0.39 in): Days with 10 mm or more rain1143197515
25 mm (0.98 in): Days with 25 mm or more rain111919776
50 mm (1.97 in): Days with 50 mm or more rain11519731
100 mm (3.94 in): Days with 100 mm or more rain2119811
10 cm (3.9 in): Days with 10 cm or more snowfall20319751
25 cm (9.8 in): Days with 25 cm or more snowfall30n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Beltzville 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).