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

Chattahoochee 1 W Threshold Days by Year (USC00081502)

5 fixed thresholds counted per year at Chattahoochee 1 W (USC00081502): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chattahoochee 1 W Thresholds

  • Chattahoochee 1 W: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1945 with 60.
  • Chattahoochee 1 W: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1945 with 25.
  • Chattahoochee 1 W: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1942 with 8.
  • Chattahoochee 1 W: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1956 with 2.
  • 5 fixed thresholds have at least one qualifying day at Chattahoochee 1 W.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Chattahoochee 1 W Days per year at Chattahoochee 1 W with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1945. 02040601937: 331938: 311939: 431940: 321941: 311942: 431943: 331944: 401945: 601947: 591948: 481949: 381950: 341951: 371952: 401953: 511954: 261955: 271956: 411957: 451958: 351937194019431947195019531956
Days per year at Chattahoochee 1 W with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1945.
Days with 10 mm (0.39 in) or more of precipitation per year at Chattahoochee 1 W
YearDaysDecade average
19373335.7
19383135.7
19394335.7
19403242.7
19413142.7
19424342.7
19433342.7
19444042.7
19456042.7
19475942.7
19484842.7
19493842.7
19503437.3
19513737.3
19524037.3
19535137.3
19542637.3
19552737.3
19564137.3
19574537.3
19583537.3
First to last qualifying date each year at Chattahoochee 1 W For each year, a bar from the first to the last day at Chattahoochee 1 W meeting 10 mm (0.39 in). 1937: 26 January 1937 to 23 December 19371938: 3 January 1938 to 27 December 19381939: 6 January 1939 to 27 December 19391940: 13 January 1940 to 27 December 19401941: 16 January 1941 to 26 December 19411942: 2 January 1942 to 29 December 19421943: 8 January 1943 to 26 December 19431944: 3 January 1944 to 11 December 19441945: 6 January 1945 to 31 December 19451947: 3 January 1947 to 25 December 19471948: 13 January 1948 to 30 December 19481949: 6 January 1949 to 15 December 19491950: 7 January 1950 to 7 December 19501951: 8 January 1951 to 27 December 19511952: 28 January 1952 to 31 December 19521953: 9 January 1953 to 31 December 19531954: 11 January 1954 to 13 December 19541955: 17 January 1955 to 5 December 19551956: 23 January 1956 to 24 December 19561957: 26 February 1957 to 8 December 19571958: 6 January 1958 to 5 November 19581937194019431947195019531956JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chattahoochee 1 W meeting 10 mm (0.39 in).
First to last qualifying date each year at Chattahoochee 1 W
YearFirst dateLast date
19371937-01-261937-12-23
19381938-01-031938-12-27
19391939-01-061939-12-27
19401940-01-131940-12-27
19411941-01-161941-12-26
19421942-01-021942-12-29
19431943-01-081943-12-26
19441944-01-031944-12-11
19451945-01-061945-12-31
19471947-01-031947-12-25
19481948-01-131948-12-30
19491949-01-061949-12-15
19501950-01-071950-12-07
19511951-01-081951-12-27
19521952-01-281952-12-31
19531953-01-091953-12-31
19541954-01-111954-12-13
19551955-01-171955-12-05
19561956-01-231956-12-24
19571957-02-261957-12-08
19581958-01-061958-11-05

Every Fixed Threshold

Fixed thresholds at Chattahoochee 1 W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2160194535
25 mm (0.98 in): Days with 25 mm or more rain2125194511
50 mm (1.97 in): Days with 50 mm or more rain19819424
100 mm (3.94 in): Days with 100 mm or more rain6219561
200 mm (7.87 in): Days with 200 mm or more rain1119481

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Chattahoochee 1 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).