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

Silverton 4 SE Threshold Days by Year (USC00357827)

12 fixed thresholds counted per year at Silverton 4 SE (USC00357827): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Silverton 4 SE Thresholds

  • Silverton 4 SE: days with 10 mm (0.39 in) or more of precipitation in 14 years, most in 1953 with 55.
  • Silverton 4 SE: days with 25 mm (0.98 in) or more of precipitation in 14 years, most in 1953 with 13.
  • Silverton 4 SE: days with a maximum temperature at or above 30 C (86 F) in 10 years, most in 1958 with 29.
  • Silverton 4 SE: days with a maximum temperature at or above 90 F (32.2 C) in 10 years, most in 1961 with 12.
  • 12 fixed thresholds have at least one qualifying day at Silverton 4 SE.
10 years with a qualifying day
Days at or above 30 C (86 F) per year at Silverton 4 SE Days per year at Silverton 4 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1958. 01020301951: 221952: 201953: 121955: 81956: 151957: 61958: 291959: 131960: 171961: 271951195219531955195619571958195919601961
Days per year at Silverton 4 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1958.
Days at or above 30 C (86 F) per year at Silverton 4 SE
YearDaysDecade average
19512215.6
19522015.6
19531215.6
1955815.6
19561515.6
1957615.6
19582915.6
19591315.6
19601722
19612722
First to last qualifying date each year at Silverton 4 SE For each year, a bar from the first to the last day at Silverton 4 SE meeting 30 C (86 F). 1951: 20 June 1951 to 17 September 19511952: 8 July 1952 to 22 September 19521953: 7 July 1953 to 5 September 19531955: 9 June 1955 to 7 September 19551956: 18 May 1956 to 26 September 19561957: 23 August 1957 to 23 September 19571958: 17 June 1958 to 8 September 19581959: 18 July 1959 to 3 September 19591960: 6 July 1960 to 10 September 19601961: 15 June 1961 to 14 September 196119511953195619581960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Silverton 4 SE meeting 30 C (86 F).
First to last qualifying date each year at Silverton 4 SE
YearFirst dateLast date
19511951-06-201951-09-17
19521952-07-081952-09-22
19531953-07-071953-09-05
19551955-06-091955-09-07
19561956-05-181956-09-26
19571957-08-231957-09-23
19581958-06-171958-09-08
19591959-07-181959-09-03
19601960-07-061960-09-10
19611961-06-151961-09-14

Every Fixed Threshold

Fixed thresholds at Silverton 4 SE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1029195827
35 C (95 F): Days8419514
90 F (32.2 C): Days1012196112
100 F (37.8 C): Days5219612
0 C (32 F): Ice days (max8819561
0 C (32 F): Frost days (min1079195536
-10 C (14 F): Days with min5619562
20 C (68 F): Tropical nights (min3319613
10 mm (0.39 in): Days with 10 mm or more rain1455195342
25 mm (0.98 in): Days with 25 mm or more rain141319539
50 mm (1.97 in): Days with 50 mm or more rain8219532
10 cm (3.9 in): Days with 10 cm or more snowfall5319542

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 Silverton 4 SE 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).