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Built 2026-10-19 (19 October 2026)

Grant 12 W Threshold Days by Year (USC00243712)

11 fixed thresholds counted per year at Grant 12 W (USC00243712): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grant 12 W Thresholds

  • Grant 12 W: days with a maximum temperature at or below 0 C (32 F) in 13 years, most in 1922 with 117.
  • Grant 12 W: nights with a minimum temperature at or below 0 C (32 F) in 13 years, most in 1915 with 258.
  • Grant 12 W: nights with a minimum temperature at or below -10 C (14 F) in 13 years, most in 1920 with 111.
  • Grant 12 W: nights with a minimum temperature at or below -20 C (-4 F) in 13 years, most in 1916 with 32.
  • 11 fixed thresholds have at least one qualifying day at Grant 12 W.
10 years with a qualifying day
Days at or above 30 C (86 F) per year at Grant 12 W Days per year at Grant 12 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1919. 051015201914: 11915: 21917: 61918: 21919: 191920: 21921: 51924: 41925: 31926: 61914191519171918191919201921192419251926
Days per year at Grant 12 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1919.
Days at or above 30 C (86 F) per year at Grant 12 W
YearDaysDecade average
191416
191526
191766
191826
1919196
192024
192154
192444
192534
192664
First to last qualifying date each year at Grant 12 W For each year, a bar from the first to the last day at Grant 12 W meeting 30 C (86 F). 1914: 14 August 1914 to 14 August 19141915: 30 August 1915 to 31 August 19151917: 6 July 1917 to 26 July 19171918: 10 June 1918 to 18 July 19181919: 19 June 1919 to 30 August 19191920: 24 July 1920 to 26 July 19201921: 14 July 1921 to 24 July 19211924: 30 June 1924 to 29 August 19241925: 14 July 1925 to 17 July 19251926: 27 June 1926 to 25 August 192619141917191919211925JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grant 12 W meeting 30 C (86 F).
First to last qualifying date each year at Grant 12 W
YearFirst dateLast date
19141914-08-141914-08-14
19151915-08-301915-08-31
19171917-07-061917-07-26
19181918-06-101918-07-18
19191919-06-191919-08-30
19201920-07-241920-07-26
19211921-07-141921-07-24
19241924-06-301924-08-29
19251925-07-141925-07-17
19261926-06-271926-08-25

Every Fixed Threshold

Fixed thresholds at Grant 12 W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days101919196
90 F (32.2 C): Days3319192
0 C (32 F): Ice days (max13117192276
0 C (32 F): Frost days (min132581915222
-10 C (14 F): Days with min13111192073
-20 C (-4 F): Days with min1332191610
-30 C (-22 F): Days with min10819161
20 C (68 F): Tropical nights (min1119191
10 mm (0.39 in): Days with 10 mm or more rain101119252
25 mm (0.98 in): Days with 25 mm or more rain1119251
10 cm (3.9 in): Days with 10 cm or more snowfall6919197

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

  • Data for Grant 12 W 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).