Built 2026-10-18 (18 October 2026)

Walkamin Post Office Threshold Days by Year

5 fixed thresholds counted per year at Walkamin Post Office (ASN00031061): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Walkamin Post Office Thresholds

  • Walkamin Post Office: days with 10 mm (0.39 in) or more of precipitation in 20 years, most in 1974 with 54.
  • Walkamin Post Office: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 1974 with 27.
  • Walkamin Post Office: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1974 with 10.
  • Walkamin Post Office: days with 100 mm (3.94 in) or more of precipitation in 7 years, most in 1967 with 3.
  • 5 fixed thresholds have at least one qualifying day at Walkamin Post Office.
20 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Walkamin Post Office Days per year at Walkamin Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 54 in 1974. 02040601951: 201952: 231953: 311954: 201955: 371956: 391957: 261958: 351959: 181960: 221961: 141966: 171967: 241968: 221970: 301971: 291973: 301974: 541976: 301977: 341951195319551957195919611967197019731976
Days per year at Walkamin Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 54 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Walkamin Post Office
YearDaysDecade average
19512027.7
19522327.7
19533127.7
19542027.7
19553727.7
19563927.7
19572627.7
19583527.7
19591827.7
19602219.8
19611419.8
19661719.8
19672419.8
19682219.8
19703034.5
19712934.5
19733034.5
19745434.5
19763034.5
19773434.5
First to last qualifying date each year at Walkamin Post Office For each year, a bar from the first to the last day at Walkamin Post Office meeting 10 mm (0.39 in). 1951: 3 January 1951 to 27 December 19511952: 12 January 1952 to 12 December 19521953: 4 January 1953 to 29 December 19531954: 4 January 1954 to 4 November 19541955: 6 January 1955 to 31 December 19551956: 4 January 1956 to 27 December 19561957: 1 January 1957 to 14 December 19571958: 6 January 1958 to 30 December 19581959: 12 February 1959 to 29 December 19591960: 16 January 1960 to 30 December 19601961: 4 January 1961 to 26 November 19611966: 4 January 1966 to 14 November 19661967: 2 January 1967 to 25 December 19671968: 3 January 1968 to 29 December 19681970: 19 January 1970 to 26 December 19701971: 6 January 1971 to 29 December 19711973: 27 January 1973 to 29 December 19731974: 3 January 1974 to 31 December 19741976: 14 January 1976 to 25 December 19761977: 17 January 1977 to 23 December 19771951195419571960196719711976JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Walkamin Post Office meeting 10 mm (0.39 in).
First to last qualifying date each year at Walkamin Post Office
YearFirst dateLast date
19511951-01-031951-12-27
19521952-01-121952-12-12
19531953-01-041953-12-29
19541954-01-041954-11-04
19551955-01-061955-12-31
19561956-01-041956-12-27
19571957-01-011957-12-14
19581958-01-061958-12-30
19591959-02-121959-12-29
19601960-01-161960-12-30
19611961-01-041961-11-26
19661966-01-041966-11-14
19671967-01-021967-12-25
19681968-01-031968-12-29
19701970-01-191970-12-26
19711971-01-061971-12-29
19731973-01-271973-12-29
19741974-01-031974-12-31
19761976-01-141976-12-25
19771977-01-171977-12-23

Every Fixed Threshold

Fixed thresholds at Walkamin Post Office
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2054197434
25 mm (0.98 in): Days with 25 mm or more rain2027197413
50 mm (1.97 in): Days with 50 mm or more rain201019747
100 mm (3.94 in): Days with 100 mm or more rain7319672
200 mm (7.87 in): Days with 200 mm or more rain1119771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Walkamin Post Office 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).