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Built 2026-10-19 (19 October 2026)

Rudyard 4N Threshold Days by Year (USC00207190)

14 fixed thresholds counted per year at Rudyard 4N (USC00207190): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rudyard 4N Thresholds

  • Rudyard 4N: days with 10 cm (3.9 in) or more of snowfall in 24 years, most in 1987 with 11.
  • Rudyard 4N: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1989 with 208.
  • Rudyard 4N: nights with a minimum temperature at or below -10 C (14 F) in 23 years, most in 1989 with 90.
  • Rudyard 4N: nights with a minimum temperature at or below -20 C (-4 F) in 23 years, most in 1982 with 38.
  • 14 fixed thresholds have at least one qualifying day at Rudyard 4N.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Rudyard 4N Days per year at Rudyard 4N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1983. 01020301979: 31980: 81981: 51982: 11983: 221984: 31985: 21986: 101987: 141989: 171993: 31994: 61997: 111998: 91999: 152000: 22001: 222002: 102003: 62004: 12007: 222008: 319791982198519891997200020032008
Days per year at Rudyard 4N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1983.
Days at or above 30 C (86 F) per year at Rudyard 4N
YearDaysDecade average
197933
198089.1
198159.1
198219.1
1983229.1
198439.1
198529.1
1986109.1
1987149.1
1989179.1
199338.8
199468.8
1997118.8
199898.8
1999158.8
200029.4
2001229.4
2002109.4
200369.4
200419.4
2007229.4
200839.4
First to last qualifying date each year at Rudyard 4N For each year, a bar from the first to the last day at Rudyard 4N meeting 30 C (86 F). 1979: 12 July 1979 to 14 July 19791980: 23 May 1980 to 7 August 19801981: 6 July 1981 to 11 July 19811982: 6 July 1982 to 6 July 19821983: 14 June 1983 to 29 August 19831984: 6 June 1984 to 4 August 19841985: 28 June 1985 to 13 July 19851986: 27 April 1986 to 30 July 19861987: 20 April 1987 to 25 July 19871989: 17 May 1989 to 12 August 19891993: 10 May 1993 to 25 August 19931994: 22 May 1994 to 27 June 19941997: 10 June 1997 to 9 August 19971998: 19 May 1998 to 27 August 19981999: 29 May 1999 to 5 September 19992000: 30 July 2000 to 31 August 20002001: 14 June 2001 to 9 August 20012002: 25 June 2002 to 9 September 20022003: 22 June 2003 to 15 August 20032004: 28 July 2004 to 28 July 20042007: 24 May 2007 to 11 August 20072008: 4 August 2008 to 2 September 200819791982198519891997200020032008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rudyard 4N meeting 30 C (86 F).
First to last qualifying date each year at Rudyard 4N
YearFirst dateLast date
19791979-07-121979-07-14
19801980-05-231980-08-07
19811981-07-061981-07-11
19821982-07-061982-07-06
19831983-06-141983-08-29
19841984-06-061984-08-04
19851985-06-281985-07-13
19861986-04-271986-07-30
19871987-04-201987-07-25
19891989-05-171989-08-12
19931993-05-101993-08-25
19941994-05-221994-06-27
19971997-06-101997-08-09
19981998-05-191998-08-27
19991999-05-291999-09-05
20002000-07-302000-08-31
20012001-06-142001-08-09
20022002-06-252002-09-09
20032003-06-222003-08-15
20042004-07-282004-07-28
20072007-05-242007-08-11
20082008-08-042008-09-02

Every Fixed Threshold

Fixed thresholds at Rudyard 4N
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days222219833
35 C (95 F): Days3119831
90 F (32.2 C): Days111320017
0 C (32 F): Ice days (max2294198582
0 C (32 F): Frost days (min232081989177
-10 C (14 F): Days with min2390198980
-20 C (-4 F): Days with min2338198216
-30 C (-22 F): Days with min14619811
20 C (68 F): Tropical nights (min7420011
10 mm (0.39 in): Days with 10 mm or more rain2336200131
25 mm (0.98 in): Days with 25 mm or more rain23819795
50 mm (1.97 in): Days with 50 mm or more rain10319791
10 cm (3.9 in): Days with 10 cm or more snowfall241119873
25 cm (9.8 in): Days with 25 cm or more snowfall2119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Rudyard 4N 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).