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

Lookout Mtn Threshold Days by Year (USC00405429)

13 fixed thresholds counted per year at Lookout Mtn (USC00405429): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lookout Mtn Thresholds

  • Lookout Mtn: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 1950 with 61.
  • Lookout Mtn: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1957 with 27.
  • Lookout Mtn: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1957 with 7.
  • Lookout Mtn: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1918 with 47.
  • 13 fixed thresholds have at least one qualifying day at Lookout Mtn.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Lookout Mtn Days per year at Lookout Mtn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 47 in 1918. 02040601914: 401915: 51916: 191917: 231918: 4719141915191619171918
Days per year at Lookout Mtn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 47 in 1918.
Days at or above 30 C (86 F) per year at Lookout Mtn
YearDaysDecade average
19144026.8
1915526.8
19161926.8
19172326.8
19184726.8
First to last qualifying date each year at Lookout Mtn For each year, a bar from the first to the last day at Lookout Mtn meeting 30 C (86 F). 1914: 29 May 1914 to 8 September 19141915: 31 July 1915 to 14 September 19151916: 27 May 1916 to 7 September 19161917: 19 May 1917 to 9 September 19171918: 25 May 1918 to 17 September 191819141915191619171918JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lookout Mtn meeting 30 C (86 F).
First to last qualifying date each year at Lookout Mtn
YearFirst dateLast date
19141914-05-291914-09-08
19151915-07-311915-09-14
19161916-05-271916-09-07
19171917-05-191917-09-09
19181918-05-251918-09-17

Every Fixed Threshold

Fixed thresholds at Lookout Mtn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days547191847
35 C (95 F): Days1119141
90 F (32.2 C): Days319191819
0 C (32 F): Ice days (max524191716
0 C (32 F): Frost days (min599191564
-10 C (14 F): Days with min426191713
-20 C (-4 F): Days with min2219182
20 C (68 F): Tropical nights (min545191640
25 C (77 F): Days with min3119141
10 mm (0.39 in): Days with 10 mm or more rain1861195047
25 mm (0.98 in): Days with 25 mm or more rain1827195718
50 mm (1.97 in): Days with 50 mm or more rain18719575
100 mm (3.94 in): Days with 100 mm or more rain4319161

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 Lookout Mtn 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).