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Built 2026-10-19 (19 October 2026)

Bartlett 1W Threshold Days by Year (USC00250525)

18 fixed thresholds counted per year at Bartlett 1W (USC00250525): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bartlett 1W Thresholds

  • Bartlett 1W: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 2019 with 33.
  • Bartlett 1W: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 2007 with 14.
  • Bartlett 1W: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 2017 with 4.
  • Bartlett 1W: days with 10 cm (3.9 in) or more of snowfall in 37 years, most in 2020 with 8.
  • 18 fixed thresholds have at least one qualifying day at Bartlett 1W.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Bartlett 1W Days per year at Bartlett 1W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 2022. 02550751001985: 451986: 361988: 751989: 511990: 661995: 551996: 321997: 621999: 472000: 682001: 672004: 492005: 732006: 732007: 742008: 182011: 452012: 772013: 502014: 332017: 582018: 552019: 512020: 832021: 752022: 902023: 812024: 571985198919962000200520082013201820212024
Days per year at Bartlett 1W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 2022.
Days at or above 30 C (86 F) per year at Bartlett 1W
YearDaysDecade average
19854551.8
19863651.8
19887551.8
19895151.8
19906652.4
19955552.4
19963252.4
19976252.4
19994752.4
20006860.3
20016760.3
20044960.3
20057360.3
20067360.3
20077460.3
20081860.3
20114552.7
20127752.7
20135052.7
20143352.7
20175852.7
20185552.7
20195152.7
20208377.2
20217577.2
20229077.2
20238177.2
20245777.2
First to last qualifying date each year at Bartlett 1W For each year, a bar from the first to the last day at Bartlett 1W meeting 30 C (86 F). 1985: 15 April 1985 to 18 September 19851986: 28 March 1986 to 3 September 19861988: 7 April 1988 to 26 September 19881989: 26 March 1989 to 31 August 19891990: 22 April 1990 to 6 October 19901995: 7 June 1995 to 12 October 19951996: 25 April 1996 to 11 September 19961997: 17 May 1997 to 5 October 19971999: 5 June 1999 to 25 September 19992000: 5 May 2000 to 19 October 20002001: 27 April 2001 to 4 October 20012004: 18 April 2004 to 20 September 20042005: 21 May 2005 to 19 October 20052006: 14 April 2006 to 4 October 20062007: 30 April 2007 to 6 October 20072008: 1 June 2008 to 27 September 20082011: 9 May 2011 to 5 October 20112012: 1 April 2012 to 13 September 20122013: 14 May 2013 to 27 September 20132014: 27 May 2014 to 20 September 20142017: 7 May 2017 to 23 September 20172018: 30 April 2018 to 3 October 20182019: 20 April 2019 to 30 September 20192020: 1 June 2020 to 9 October 20202021: 4 April 2021 to 28 September 20212022: 12 April 2022 to 22 October 20222023: 12 April 2023 to 1 October 20232024: 17 May 2024 to 29 September 20241985199019992005201120172021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bartlett 1W meeting 30 C (86 F).
First to last qualifying date each year at Bartlett 1W
YearFirst dateLast date
19851985-04-151985-09-18
19861986-03-281986-09-03
19881988-04-071988-09-26
19891989-03-261989-08-31
19901990-04-221990-10-06
19951995-06-071995-10-12
19961996-04-251996-09-11
19971997-05-171997-10-05
19991999-06-051999-09-25
20002000-05-052000-10-19
20012001-04-272001-10-04
20042004-04-182004-09-20
20052005-05-212005-10-19
20062006-04-142006-10-04
20072007-04-302007-10-06
20082008-06-012008-09-27
20112011-05-092011-10-05
20122012-04-012012-09-13
20132013-05-142013-09-27
20142014-05-272014-09-20
20172017-05-072017-09-23
20182018-04-302018-10-03
20192019-04-202019-09-30
20202020-06-012020-10-09
20212021-04-042021-09-28
20222022-04-122022-10-22
20232023-04-122023-10-01
20242024-05-172024-09-29

Every Fixed Threshold

Fixed thresholds at Bartlett 1W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2890202257
35 C (95 F): Days2831202219
40 C (104 F): Days8320061
90 F (32.2 C): Days2861202236
100 F (37.8 C): Days191020062
0 C (32 F): Ice days (max2863199625
0 C (32 F): Frost days (min281801996112
-10 C (14 F): Days with min2872199625
-20 C (-4 F): Days with min272219968
-30 C (-22 F): Days with min6619961
20 C (68 F): Tropical nights (min2836202436
25 C (77 F): Days with min6119861
10 mm (0.39 in): Days with 10 mm or more rain6033201921
25 mm (0.98 in): Days with 25 mm or more rain591420077
50 mm (1.97 in): Days with 50 mm or more rain43420172
100 mm (3.94 in): Days with 100 mm or more rain1120051
10 cm (3.9 in): Days with 10 cm or more snowfall37820202
25 cm (9.8 in): Days with 25 cm or more snowfall8220171

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 Bartlett 1W 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 (2026-10-12).