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Built 2026-10-19 (19 October 2026)

March AFB Threshold Days by Year (USW00023119)

13 fixed thresholds counted per year at March AFB (USW00023119): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for March AFB Thresholds

  • March AFB: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1965 with 16.
  • March AFB: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 2020 with 151.
  • March AFB: days with a maximum temperature at or above 35 C (95 F) in 35 years, most in 2024 with 78.
  • March AFB: days with a maximum temperature at or above 90 F (32.2 C) in 35 years, most in 2020 with 125.
  • 13 fixed thresholds have at least one qualifying day at March AFB.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at March AFB Days per year at March AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 151 in 2020. 0501001502001949: 1271950: 1001951: 1001952: 1111953: 961954: 951955: 1031956: 1061957: 981958: 1321959: 1071960: 1281961: 1091962: 1271963: 891964: 1031965: 1071966: 1191967: 1221968: 1061969: 911970: 1162012: 1462013: 1272014: 1502015: 1282016: 1292017: 1382020: 1512021: 1312022: 1322023: 1012024: 1262025: 1242026: 142194919531957196119651969201420202024
Days per year at March AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 151 in 2020.
Days at or above 30 C (86 F) per year at March AFB
YearDaysDecade average
1949127127
1950100104.8
1951100104.8
1952111104.8
195396104.8
195495104.8
1955103104.8
1956106104.8
195798104.8
1958132104.8
1959107104.8
1960128110.1
1961109110.1
1962127110.1
196389110.1
1964103110.1
1965107110.1
1966119110.1
1967122110.1
1968106110.1
196991110.1
1970116116
2012146136.3
2013127136.3
2014150136.3
2015128136.3
2016129136.3
2017138136.3
2020151129.6
2021131129.6
2022132129.6
2023101129.6
2024126129.6
2025124129.6
2026142129.6
First to last qualifying date each year at March AFB For each year, a bar from the first to the last day at March AFB meeting 30 C (86 F). 1949: 9 April 1949 to 24 November 19491950: 29 March 1950 to 10 December 19501951: 9 February 1951 to 5 November 19511952: 4 April 1952 to 28 October 19521953: 23 March 1953 to 31 October 19531954: 6 February 1954 to 21 October 19541955: 25 March 1955 to 9 November 19551956: 20 April 1956 to 11 November 19561957: 26 May 1957 to 30 September 19571958: 15 April 1958 to 11 December 19581959: 1 April 1959 to 24 October 19591960: 3 April 1960 to 30 October 19601961: 2 April 1961 to 5 November 19611962: 5 April 1962 to 7 November 19621963: 3 February 1963 to 7 October 19631964: 14 April 1964 to 21 October 19641965: 24 April 1965 to 30 October 19651966: 30 March 1966 to 2 November 19661967: 7 May 1967 to 13 November 19671968: 29 March 1968 to 10 November 19681969: 9 May 1969 to 3 November 19691970: 3 May 1970 to 1 November 19702012: 4 January 2012 to 24 November 20122013: 13 March 2013 to 14 November 20132014: 14 February 2014 to 27 November 20142015: 14 March 2015 to 20 November 20152016: 16 February 2016 to 14 November 20162017: 12 March 2017 to 25 November 20172020: 23 April 2020 to 16 November 20202021: 28 March 2021 to 1 December 20212022: 11 February 2022 to 20 October 20222023: 10 April 2023 to 5 November 20232024: 11 April 2024 to 27 October 20242025: 26 February 2025 to 11 November 20252026: 27 February 2026 to 9 October 20261949195419591964196920152022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at March AFB meeting 30 C (86 F).
First to last qualifying date each year at March AFB
YearFirst dateLast date
19491949-04-091949-11-24
19501950-03-291950-12-10
19511951-02-091951-11-05
19521952-04-041952-10-28
19531953-03-231953-10-31
19541954-02-061954-10-21
19551955-03-251955-11-09
19561956-04-201956-11-11
19571957-05-261957-09-30
19581958-04-151958-12-11
19591959-04-011959-10-24
19601960-04-031960-10-30
19611961-04-021961-11-05
19621962-04-051962-11-07
19631963-02-031963-10-07
19641964-04-141964-10-21
19651965-04-241965-10-30
19661966-03-301966-11-02
19671967-05-071967-11-13
19681968-03-291968-11-10
19691969-05-091969-11-03
19701970-05-031970-11-01
20122012-01-042012-11-24
20132013-03-132013-11-14
20142014-02-142014-11-27
20152015-03-142015-11-20
20162016-02-162016-11-14
20172017-03-122017-11-25
20202020-04-232020-11-16
20212021-03-282021-12-01
20222022-02-112022-10-20
20232023-04-102023-11-05
20242024-04-112024-10-27
20252025-02-262025-11-11
20262026-02-272026-10-09

Every Fixed Threshold

Fixed thresholds at March AFB
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days351512020142
35 C (95 F): Days3578202471
40 C (104 F): Days311520207
45 C (113 F): Days2220201
90 F (32.2 C): Days351252020112
100 F (37.8 C): Days3543202431
110 F (43.3 C): Days6320203
0 C (32 F): Frost days (min344320132
20 C (68 F): Tropical nights (min3544202241
25 C (77 F): Days with min5320221
10 mm (0.39 in): Days with 10 mm or more rain361619653
25 mm (0.98 in): Days with 25 mm or more rain27719521
50 mm (1.97 in): Days with 50 mm or more rain7219691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for March AFB 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).