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

Green Mountain Threshold Days by Year (USS0015J09S)

9 fixed thresholds counted per year at Green Mountain (USS0015J09S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Green Mountain Thresholds

  • Green Mountain: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 2019 with 52.
  • Green Mountain: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1983 with 10.
  • Green Mountain: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 2008 with 74.
  • Green Mountain: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1998 with 212.
  • 9 fixed thresholds have at least one qualifying day at Green Mountain.
15 years with a qualifying day
Days at or above 30 C (86 F) per year at Green Mountain Days per year at Green Mountain with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 2003. 024681985: 21988: 21989: 21995: 11998: 42000: 42001: 42002: 42003: 52005: 32013: 12018: 12020: 42022: 42026: 819851989199820012003201320202026
Days per year at Green Mountain with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 2003.
Days at or above 30 C (86 F) per year at Green Mountain
YearDaysDecade average
198522
198822
198922
199512.5
199842.5
200044
200144
200244
200354
200534
201311
201811
202045.3
202245.3
202685.3
First to last qualifying date each year at Green Mountain For each year, a bar from the first to the last day at Green Mountain meeting 30 C (86 F). 1985: 3 July 1985 to 9 July 19851988: 21 July 1988 to 30 July 19881989: 19 July 1989 to 20 July 19891995: 28 July 1995 to 28 July 19951998: 16 July 1998 to 19 July 19982000: 29 July 2000 to 1 August 20002001: 2 July 2001 to 7 August 20012002: 10 July 2002 to 13 July 20022003: 10 July 2003 to 30 July 20032005: 12 July 2005 to 15 July 20052013: 1 July 2013 to 1 July 20132018: 10 August 2018 to 10 August 20182020: 30 July 2020 to 5 September 20202022: 3 September 2022 to 7 September 20222026: 11 July 2026 to 8 August 202619851989199820012003201320202026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Green Mountain meeting 30 C (86 F).
First to last qualifying date each year at Green Mountain
YearFirst dateLast date
19851985-07-031985-07-09
19881988-07-211988-07-30
19891989-07-191989-07-20
19951995-07-281995-07-28
19981998-07-161998-07-19
20002000-07-292000-08-01
20012001-07-022001-08-07
20022002-07-102002-07-13
20032003-07-102003-07-30
20052005-07-122005-07-15
20132013-07-012013-07-01
20182018-08-102018-08-10
20202020-07-302020-09-05
20222022-09-032022-09-07
20262026-07-112026-08-08

Every Fixed Threshold

Fixed thresholds at Green Mountain
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days15520038
90 F (32.2 C): Days2120001
0 C (32 F): Ice days (max4074200812
0 C (32 F): Frost days (min32212199898
-10 C (14 F): Days with min3258202310
-20 C (-4 F): Days with min12720131
10 mm (0.39 in): Days with 10 mm or more rain4652201918
25 mm (0.98 in): Days with 25 mm or more rain461019831
50 mm (1.97 in): Days with 50 mm or more rain12220101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1985.

Download the Data

  • Data for Green Mountain 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).