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

Littleton Threshold Days by Year (USC00274804)

15 fixed thresholds counted per year at Littleton (USC00274804): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Littleton Thresholds

  • Littleton: days with a maximum temperature at or below 0 C (32 F) in 9 years, most in 1933 with 97.
  • Littleton: nights with a minimum temperature at or below 0 C (32 F) in 9 years, most in 1933 with 200.
  • Littleton: nights with a minimum temperature at or below -10 C (14 F) in 9 years, most in 1934 with 86.
  • Littleton: nights with a minimum temperature at or below -20 C (-4 F) in 9 years, most in 1934 with 49.
  • 15 fixed thresholds have at least one qualifying day at Littleton.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Littleton Days per year at Littleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1894. 0510151894: 121898: 91899: 111900: 81901: 111931: 71933: 101934: 818941898189919001901193119331934
Days per year at Littleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1894.
Days at or above 30 C (86 F) per year at Littleton
YearDaysDecade average
18941210.7
1898910.7
18991110.7
190089.5
1901119.5
193178.3
1933108.3
193488.3
First to last qualifying date each year at Littleton For each year, a bar from the first to the last day at Littleton meeting 30 C (86 F). 1894: 16 June 1894 to 29 July 18941898: 3 July 1898 to 4 September 18981899: 5 June 1899 to 21 August 18991900: 7 July 1900 to 3 September 19001901: 26 June 1901 to 6 September 19011931: 20 June 1931 to 12 September 19311933: 10 June 1933 to 2 August 19331934: 6 June 1934 to 11 August 193418941898189919001901193119331934JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Littleton meeting 30 C (86 F).
First to last qualifying date each year at Littleton
YearFirst dateLast date
18941894-06-161894-07-29
18981898-07-031898-09-04
18991899-06-051899-08-21
19001900-07-071900-09-03
19011901-06-261901-09-06
19311931-06-201931-09-12
19331933-06-101933-08-02
19341934-06-061934-08-11

Every Fixed Threshold

Fixed thresholds at Littleton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days81218948
35 C (95 F): Days1119341
90 F (32.2 C): Days7619332
0 C (32 F): Ice days (max997193390
0 C (32 F): Frost days (min92001933195
-10 C (14 F): Days with min986193486
-20 C (-4 F): Days with min949193449
-30 C (-22 F): Days with min517193417
-40 C (-40 F): Days with min2119331
20 C (68 F): Tropical nights (min7218982
10 mm (0.39 in): Days with 10 mm or more rain937190030
25 mm (0.98 in): Days with 25 mm or more rain9819005
50 mm (1.97 in): Days with 50 mm or more rain3319343
10 cm (3.9 in): Days with 10 cm or more snowfall3919335
25 cm (9.8 in): Days with 25 cm or more snowfall1219332

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

  • Data for Littleton 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).