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

Mountain Valley Threshold Days by Year

4 fixed thresholds counted per year at Mountain Valley (ASN00014625): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mountain Valley Thresholds

  • Mountain Valley: days with 10 mm (0.39 in) or more of precipitation in 14 years, most in 1969 with 36.
  • Mountain Valley: days with 25 mm (0.98 in) or more of precipitation in 14 years, most in 1968 with 18.
  • Mountain Valley: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 1968 with 7.
  • Mountain Valley: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1963 with 1.
  • 4 fixed thresholds have at least one qualifying day at Mountain Valley.
14 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mountain Valley Days per year at Mountain Valley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1969. 0102030401962: 101963: 251964: 211965: 321966: 201967: 301968: 331969: 361970: 211971: 311972: 221973: 331974: 351977: 351962196419661968197019721974
Days per year at Mountain Valley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1969.
Days with 10 mm (0.39 in) or more of precipitation per year at Mountain Valley
YearDaysDecade average
19621025.9
19632525.9
19642125.9
19653225.9
19662025.9
19673025.9
19683325.9
19693625.9
19702129.5
19713129.5
19722229.5
19733329.5
19743529.5
19773529.5
First to last qualifying date each year at Mountain Valley For each year, a bar from the first to the last day at Mountain Valley meeting 10 mm (0.39 in). 1962: 6 January 1962 to 20 December 19621963: 7 January 1963 to 18 December 19631964: 5 January 1964 to 30 December 19641965: 2 January 1965 to 28 December 19651966: 8 January 1966 to 26 December 19661967: 1 January 1967 to 30 December 19671968: 1 February 1968 to 26 December 19681969: 4 January 1969 to 21 December 19691970: 2 January 1970 to 24 December 19701971: 18 January 1971 to 31 December 19711972: 8 January 1972 to 29 November 19721973: 3 January 1973 to 31 December 19731974: 3 January 1974 to 26 December 19741977: 3 January 1977 to 26 November 19771962196419661968197019721974JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mountain Valley meeting 10 mm (0.39 in).
First to last qualifying date each year at Mountain Valley
YearFirst dateLast date
19621962-01-061962-12-20
19631963-01-071963-12-18
19641964-01-051964-12-30
19651965-01-021965-12-28
19661966-01-081966-12-26
19671967-01-011967-12-30
19681968-02-011968-12-26
19691969-01-041969-12-21
19701970-01-021970-12-24
19711971-01-181971-12-31
19721972-01-081972-11-29
19731973-01-031973-12-31
19741974-01-031974-12-26
19771977-01-031977-11-26

Every Fixed Threshold

Fixed thresholds at Mountain Valley
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1436196935
25 mm (0.98 in): Days with 25 mm or more rain1418196816
50 mm (1.97 in): Days with 50 mm or more rain13719686
100 mm (3.94 in): Days with 100 mm or more rain2119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Mountain Valley 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).