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

Monitor Pass Threshold Days by Year (USS0019L40S)

9 fixed thresholds counted per year at Monitor Pass (USS0019L40S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monitor Pass Thresholds

  • Monitor Pass: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1996 with 36.
  • Monitor Pass: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 2001 with 51.
  • Monitor Pass: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1998 with 243.
  • Monitor Pass: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 2023 with 60.
  • 9 fixed thresholds have at least one qualifying day at Monitor Pass.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Monitor Pass Days per year at Monitor Pass with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1998. 001111998: 12000: 12002: 12003: 11998200020022003
Days per year at Monitor Pass with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1998.
Days at or above 30 C (86 F) per year at Monitor Pass
YearDaysDecade average
199811
200011
200211
200311
First to last qualifying date each year at Monitor Pass For each year, a bar from the first to the last day at Monitor Pass meeting 30 C (86 F). 1998: 18 July 1998 to 18 July 19982000: 30 July 2000 to 30 July 20002002: 10 July 2002 to 10 July 20022003: 22 July 2003 to 22 July 20031998200020022003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Monitor Pass meeting 30 C (86 F).
First to last qualifying date each year at Monitor Pass
YearFirst dateLast date
19981998-07-181998-07-18
20002000-07-302000-07-30
20022002-07-102002-07-10
20032003-07-222003-07-22

Every Fixed Threshold

Fixed thresholds at Monitor Pass
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4119981
0 C (32 F): Ice days (max3551200112
0 C (32 F): Frost days (min342431998105
-10 C (14 F): Days with min346020238
-20 C (-4 F): Days with min6319971
10 mm (0.39 in): Days with 10 mm or more rain363619969
25 mm (0.98 in): Days with 25 mm or more rain341320171
50 mm (1.97 in): Days with 50 mm or more rain22620171
100 mm (3.94 in): Days with 100 mm or more rain1119951

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Monitor Pass 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).