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

Palmyra Threshold Days by Year (USC00236493)

19 fixed thresholds counted per year at Palmyra (USC00236493): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Palmyra Thresholds

  • Palmyra: days with 10 mm (0.39 in) or more of precipitation in 93 years, most in 1898 with 51.
  • Palmyra: days with 25 mm (0.98 in) or more of precipitation in 93 years, most in 1973 with 21.
  • Palmyra: days with 50 mm (1.97 in) or more of precipitation in 74 years, most in 1970 with 8.
  • Palmyra: days with 10 cm (3.9 in) or more of snowfall in 45 years, most in 2000 with 16.
  • 19 fixed thresholds have at least one qualifying day at Palmyra.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Palmyra Days per year at Palmyra with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 1913. 02550751001913: 971914: 971915: 311916: 681917: 551918: 741920: 601922: 7719131914191519161917191819201922
Days per year at Palmyra with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 1913.
Days at or above 30 C (86 F) per year at Palmyra
YearDaysDecade average
19139770.3
19149770.3
19153170.3
19166870.3
19175570.3
19187470.3
19206068.5
19227768.5
First to last qualifying date each year at Palmyra For each year, a bar from the first to the last day at Palmyra meeting 30 C (86 F). 1913: 29 May 1913 to 11 September 19131914: 26 April 1914 to 20 September 19141915: 13 May 1915 to 15 September 19151916: 8 May 1916 to 9 October 19161917: 19 May 1917 to 17 September 19171918: 14 March 1918 to 30 August 19181920: 9 May 1920 to 27 September 19201922: 11 May 1922 to 4 October 192219131914191519161917191819201922JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Palmyra meeting 30 C (86 F).
First to last qualifying date each year at Palmyra
YearFirst dateLast date
19131913-05-291913-09-11
19141914-04-261914-09-20
19151915-05-131915-09-15
19161916-05-081916-10-09
19171917-05-191917-09-17
19181918-03-141918-08-30
19201920-05-091920-09-27
19221922-05-111922-10-04

Every Fixed Threshold

Fixed thresholds at Palmyra
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days897191377
35 C (95 F): Days762191320
40 C (104 F): Days3719134
90 F (32.2 C): Days890191349
100 F (37.8 C): Days63019133
110 F (43.3 C): Days1119181
0 C (32 F): Ice days (max845192245
0 C (32 F): Frost days (min71431917116
-10 C (14 F): Days with min751191737
-20 C (-4 F): Days with min517191817
-30 C (-22 F): Days with min1119181
20 C (68 F): Tropical nights (min752191421
25 C (77 F): Days with min4319181
10 mm (0.39 in): Days with 10 mm or more rain9351189838
25 mm (0.98 in): Days with 25 mm or more rain9321197317
50 mm (1.97 in): Days with 50 mm or more rain74819704
100 mm (3.94 in): Days with 100 mm or more rain11118961
10 cm (3.9 in): Days with 10 cm or more snowfall451620001
25 cm (9.8 in): Days with 25 cm or more snowfall2119201

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

  • Data for Palmyra 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).