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Built 2026-10-19 (19 October 2026)

Mansfield 4 NW Threshold Days by Year (USC00165874)

17 fixed thresholds counted per year at Mansfield 4 NW (USC00165874): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mansfield 4 NW Thresholds

  • Mansfield 4 NW: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1957 with 55.
  • Mansfield 4 NW: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1961 with 26.
  • Mansfield 4 NW: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1992 with 10.
  • Mansfield 4 NW: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1955 with 158.
  • 17 fixed thresholds have at least one qualifying day at Mansfield 4 NW.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Mansfield 4 NW Days per year at Mansfield 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 158 in 1955. 0501001502001897: 1481898: 1391899: 1501900: 1351901: 1321902: 1261955: 1581956: 1481957: 1091958: 1191959: 1251960: 1161961: 931962: 1351963: 1581964: 1161997: 1101998: 1331999: 1402000: 1512001: 1132006: 1402007: 1252008: 902010: 129189719001955195819611964199920062010
Days per year at Mansfield 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 158 in 1955.
Days at or above 30 C (86 F) per year at Mansfield 4 NW
YearDaysDecade average
1897148145.7
1898139145.7
1899150145.7
1900135131
1901132131
1902126131
1955158131.8
1956148131.8
1957109131.8
1958119131.8
1959125131.8
1960116123.6
196193123.6
1962135123.6
1963158123.6
1964116123.6
1997110127.7
1998133127.7
1999140127.7
2000151123.8
2001113123.8
2006140123.8
2007125123.8
200890123.8
2010129129
First to last qualifying date each year at Mansfield 4 NW For each year, a bar from the first to the last day at Mansfield 4 NW meeting 30 C (86 F). 1897: 9 March 1897 to 24 October 18971898: 18 March 1898 to 11 October 18981899: 23 March 1899 to 23 October 18991900: 13 March 1900 to 24 October 19001901: 24 April 1901 to 26 October 19011902: 19 April 1902 to 8 November 19021955: 11 March 1955 to 13 November 19551956: 8 May 1956 to 20 October 19561957: 11 May 1957 to 5 October 19571958: 24 April 1958 to 10 October 19581959: 1 May 1959 to 13 October 19591960: 7 April 1960 to 10 October 19601961: 7 May 1961 to 30 September 19611962: 8 May 1962 to 21 October 19621963: 14 March 1963 to 28 October 19631964: 4 May 1964 to 2 October 19641997: 22 April 1997 to 12 October 19971998: 8 May 1998 to 6 October 19981999: 11 February 1999 to 23 October 19992000: 10 March 2000 to 2 November 20002001: 7 April 2001 to 25 October 20012006: 12 March 2006 to 19 October 20062007: 18 April 2007 to 22 October 20072008: 10 May 2008 to 13 September 20082010: 4 May 2010 to 28 October 20101897190119571961199720012010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mansfield 4 NW meeting 30 C (86 F).
First to last qualifying date each year at Mansfield 4 NW
YearFirst dateLast date
18971897-03-091897-10-24
18981898-03-181898-10-11
18991899-03-231899-10-23
19001900-03-131900-10-24
19011901-04-241901-10-26
19021902-04-191902-11-08
19551955-03-111955-11-13
19561956-05-081956-10-20
19571957-05-111957-10-05
19581958-04-241958-10-10
19591959-05-011959-10-13
19601960-04-071960-10-10
19611961-05-071961-09-30
19621962-05-081962-10-21
19631963-03-141963-10-28
19641964-05-041964-10-02
19971997-04-221997-10-12
19981998-05-081998-10-06
19991999-02-111999-10-23
20002000-03-102000-11-02
20012001-04-072001-10-25
20062006-03-122006-10-19
20072007-04-182007-10-22
20082008-05-102008-09-13
20102010-05-042010-10-28

Every Fixed Threshold

Fixed thresholds at Mansfield 4 NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days251581955129
35 C (95 F): Days2579199830
40 C (104 F): Days101019981
90 F (32.2 C): Days25120189994
100 F (37.8 C): Days163320003
0 C (32 F): Ice days (max18819631
0 C (32 F): Frost days (min2574196347
-10 C (14 F): Days with min11719632
-20 C (-4 F): Days with min1118991
20 C (68 F): Tropical nights (min251331998117
25 C (77 F): Days with min1427199812
10 mm (0.39 in): Days with 10 mm or more rain4755195728
25 mm (0.98 in): Days with 25 mm or more rain4726196110
50 mm (1.97 in): Days with 50 mm or more rain451019923
100 mm (3.94 in): Days with 100 mm or more rain19219581
200 mm (7.87 in): Days with 200 mm or more rain2119551
10 cm (3.9 in): Days with 10 cm or more snowfall2119771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

  • Data for Mansfield 4 NW 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).