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

Slide Mtn Threshold Days by Year (USC00307799)

16 fixed thresholds counted per year at Slide Mtn (USC00307799): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Slide Mtn Thresholds

  • Slide Mtn: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1975 with 67.
  • Slide Mtn: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1996 with 29.
  • Slide Mtn: days with 50 mm (1.97 in) or more of precipitation in 59 years, most in 1952 with 9.
  • Slide Mtn: days with 10 cm (3.9 in) or more of snowfall in 45 years, most in 1971 with 16.
  • 16 fixed thresholds have at least one qualifying day at Slide Mtn.
11 years with a qualifying day
Days at or above 30 C (86 F) per year at Slide Mtn Days per year at Slide Mtn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1988. 02461962: 21963: 11964: 11966: 31988: 51991: 21995: 22001: 12002: 42006: 22010: 4196219641988199520022010
Days per year at Slide Mtn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1988.
Days at or above 30 C (86 F) per year at Slide Mtn
YearDaysDecade average
196221.8
196311.8
196411.8
196631.8
198855
199122
199522
200112.3
200242.3
200622.3
201044
First to last qualifying date each year at Slide Mtn For each year, a bar from the first to the last day at Slide Mtn meeting 30 C (86 F). 1962: 19 May 1962 to 20 May 19621963: 3 July 1963 to 3 July 19631964: 1 July 1964 to 1 July 19641966: 3 July 1966 to 14 July 19661988: 7 July 1988 to 17 July 19881991: 20 July 1991 to 21 July 19911995: 15 July 1995 to 16 July 19952001: 10 August 2001 to 10 August 20012002: 3 August 2002 to 15 August 20022006: 2 August 2006 to 3 August 20062010: 27 May 2010 to 8 July 2010196219641988199520022010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Slide Mtn meeting 30 C (86 F).
First to last qualifying date each year at Slide Mtn
YearFirst dateLast date
19621962-05-191962-05-20
19631963-07-031963-07-03
19641964-07-011964-07-01
19661966-07-031966-07-14
19881988-07-071988-07-17
19911991-07-201991-07-21
19951995-07-151995-07-16
20012001-08-102001-08-10
20022002-08-032002-08-15
20062006-08-022006-08-03
20102010-05-272010-07-08

Every Fixed Threshold

Fixed thresholds at Slide Mtn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days11519884
90 F (32.2 C): Days1120011
0 C (32 F): Ice days (max4397196974
0 C (32 F): Frost days (min442111966148
-10 C (14 F): Days with min4497197648
-20 C (-4 F): Days with min432819682
-30 C (-22 F): Days with min3219631
20 C (68 F): Tropical nights (min2220062
10 mm (0.39 in): Days with 10 mm or more rain6067197558
25 mm (0.98 in): Days with 25 mm or more rain6029199623
50 mm (1.97 in): Days with 50 mm or more rain59919529
100 mm (3.94 in): Days with 100 mm or more rain27419551
200 mm (7.87 in): Days with 200 mm or more rain2119551
10 cm (3.9 in): Days with 10 cm or more snowfall451619718
25 cm (9.8 in): Days with 25 cm or more snowfall35520105
50 cm (19.7 in): Days with 50 cm or more snowfall9119641

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 Slide Mtn 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).