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

Sylvan Road Threshold Days by Year (USS0010E20S)

10 fixed thresholds counted per year at Sylvan Road (USS0010E20S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sylvan Road Thresholds

  • Sylvan Road: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1996 with 40.
  • Sylvan Road: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 1997 with 100.
  • Sylvan Road: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 2008 with 313.
  • Sylvan Road: nights with a minimum temperature at or below -10 C (14 F) in 33 years, most in 2008 with 133.
  • 10 fixed thresholds have at least one qualifying day at Sylvan Road.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Sylvan Road Days per year at Sylvan Road with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 2003. 051015201990: 81991: 41994: 71995: 41996: 51997: 11998: 81999: 12000: 122001: 82002: 122003: 192005: 62006: 92007: 142008: 12009: 12011: 12012: 32013: 12015: 22017: 12018: 32019: 12020: 22021: 42022: 42023: 12024: 32025: 12026: 819901996200020052009201520202024
Days per year at Sylvan Road with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 2003.
Days at or above 30 C (86 F) per year at Sylvan Road
YearDaysDecade average
199084.8
199144.8
199474.8
199544.8
199654.8
199714.8
199884.8
199914.8
2000129.1
200189.1
2002129.1
2003199.1
200569.1
200699.1
2007149.1
200819.1
200919.1
201111.7
201231.7
201311.7
201521.7
201711.7
201831.7
201911.7
202023.3
202143.3
202243.3
202313.3
202433.3
202513.3
202683.3
First to last qualifying date each year at Sylvan Road For each year, a bar from the first to the last day at Sylvan Road meeting 30 C (86 F). 1990: 24 June 1990 to 8 August 19901991: 13 July 1991 to 31 August 19911994: 20 June 1994 to 7 August 19941995: 8 July 1995 to 7 August 19951996: 2 July 1996 to 24 August 19961997: 3 August 1997 to 3 August 19971998: 16 July 1998 to 6 August 19981999: 28 July 1999 to 28 July 19992000: 5 June 2000 to 9 August 20002001: 1 July 2001 to 8 August 20012002: 26 June 2002 to 15 July 20022003: 10 July 2003 to 14 August 20032005: 21 June 2005 to 21 July 20052006: 7 June 2006 to 29 July 20062007: 28 June 2007 to 30 July 20072008: 25 August 2008 to 25 August 20082009: 22 August 2009 to 22 August 20092011: 27 August 2011 to 27 August 20112012: 24 June 2012 to 8 August 20122013: 2 July 2013 to 2 July 20132015: 29 June 2015 to 20 July 20152017: 14 July 2017 to 14 July 20172018: 10 August 2018 to 12 August 20182019: 22 July 2019 to 22 July 20192020: 1 August 2020 to 17 August 20202021: 14 June 2021 to 26 July 20212022: 17 July 2022 to 7 September 20222023: 23 July 2023 to 23 July 20232024: 24 July 2024 to 3 August 20242025: 19 August 2025 to 19 August 20252026: 11 July 2026 to 1 August 202619901996200020052009201520202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sylvan Road meeting 30 C (86 F).
First to last qualifying date each year at Sylvan Road
YearFirst dateLast date
19901990-06-241990-08-08
19911991-07-131991-08-31
19941994-06-201994-08-07
19951995-07-081995-08-07
19961996-07-021996-08-24
19971997-08-031997-08-03
19981998-07-161998-08-06
19991999-07-281999-07-28
20002000-06-052000-08-09
20012001-07-012001-08-08
20022002-06-262002-07-15
20032003-07-102003-08-14
20052005-06-212005-07-21
20062006-06-072006-07-29
20072007-06-282007-07-30
20082008-08-252008-08-25
20092009-08-222009-08-22
20112011-08-272011-08-27
20122012-06-242012-08-08
20132013-07-022013-07-02
20152015-06-292015-07-20
20172017-07-142017-07-14
20182018-08-102018-08-12
20192019-07-222019-07-22
20202020-08-012020-08-17
20212021-06-142021-07-26
20222022-07-172022-09-07
20232023-07-232023-07-23
20242024-07-242024-08-03
20252025-08-192025-08-19
20262026-07-112026-08-01

Every Fixed Threshold

Fixed thresholds at Sylvan Road
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days311920038
35 C (95 F): Days1120021
90 F (32.2 C): Days10520022
0 C (32 F): Ice days (max37100199721
0 C (32 F): Frost days (min333132008194
-10 C (14 F): Days with min33133200845
-20 C (-4 F): Days with min334420095
-30 C (-22 F): Days with min25720224
10 mm (0.39 in): Days with 10 mm or more rain3940199616
25 mm (0.98 in): Days with 25 mm or more rain30420181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Sylvan Road 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).