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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Robert Gray AAF Threshold Days by Year (USW00003902)

15 fixed thresholds counted per year at Robert Gray AAF (USW00003902): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Robert Gray AAF Thresholds

  • Robert Gray AAF: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 2007 with 38.
  • Robert Gray AAF: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 2007 with 17.
  • Robert Gray AAF: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 2011 with 202.
  • Robert Gray AAF: days with a maximum temperature at or above 35 C (95 F) in 17 years, most in 2011 with 135.
  • 15 fixed thresholds have at least one qualifying day at Robert Gray AAF.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at Robert Gray AAF Days per year at Robert Gray AAF with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 202 in 2011. 01002003001951: 1371952: 1331953: 1401954: 1481955: 1621956: 1641957: 1181958: 1221959: 1262007: 1162009: 1362011: 2022012: 1432013: 1302023: 1422024: 1742025: 177195119531955195719592009201220232025
Days per year at Robert Gray AAF with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 202 in 2011.
Days at or above 30 C (86 F) per year at Robert Gray AAF
YearDaysDecade average
1951137138.9
1952133138.9
1953140138.9
1954148138.9
1955162138.9
1956164138.9
1957118138.9
1958122138.9
1959126138.9
2007116126
2009136126
2011202158.3
2012143158.3
2013130158.3
2023142164.3
2024174164.3
2025177164.3
First to last qualifying date each year at Robert Gray AAF For each year, a bar from the first to the last day at Robert Gray AAF meeting 30 C (86 F). 1951: 7 March 1951 to 15 November 19511952: 19 March 1952 to 14 October 19521953: 7 April 1953 to 12 October 19531954: 26 February 1954 to 26 October 19541955: 10 March 1955 to 24 December 19551956: 27 March 1956 to 29 October 19561957: 9 February 1957 to 5 October 19571958: 4 April 1958 to 9 November 19581959: 17 February 1959 to 23 October 19592007: 12 May 2007 to 14 November 20072009: 26 February 2009 to 15 October 20092011: 13 February 2011 to 26 October 20112012: 23 February 2012 to 26 November 20122013: 4 March 2013 to 17 November 20132023: 28 February 2023 to 27 October 20232024: 22 February 2024 to 30 December 20242025: 3 February 2025 to 26 December 2025195119541957200720122024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Robert Gray AAF meeting 30 C (86 F).
First to last qualifying date each year at Robert Gray AAF
YearFirst dateLast date
19511951-03-071951-11-15
19521952-03-191952-10-14
19531953-04-071953-10-12
19541954-02-261954-10-26
19551955-03-101955-12-24
19561956-03-271956-10-29
19571957-02-091957-10-05
19581958-04-041958-11-09
19591959-02-171959-10-23
20072007-05-122007-11-14
20092009-02-262009-10-15
20112011-02-132011-10-26
20122012-02-232012-11-26
20132013-03-042013-11-17
20232023-02-282023-10-27
20242024-02-222024-12-30
20252025-02-032025-12-26

Every Fixed Threshold

Fixed thresholds at Robert Gray AAF
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days172022011177
35 C (95 F): Days17135201148
40 C (104 F): Days123920094
90 F (32.2 C): Days171712011130
100 F (37.8 C): Days168920114
110 F (43.3 C): Days1120111
0 C (32 F): Ice days (max11519512
0 C (32 F): Frost days (min1730201329
-10 C (14 F): Days with min2419512
20 C (68 F): Tropical nights (min171472024139
25 C (77 F): Days with min176520096
10 mm (0.39 in): Days with 10 mm or more rain1838200730
25 mm (0.98 in): Days with 25 mm or more rain1817200711
50 mm (1.97 in): Days with 50 mm or more rain13519572
100 mm (3.94 in): Days with 100 mm or more rain5219591

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Robert Gray AAF 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).