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Built 2026-10-19 (19 October 2026)

Tully Heiberg Forest Threshold Days by Year (USC00308627)

15 fixed thresholds counted per year at Tully Heiberg Forest (USC00308627): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tully Heiberg Forest Thresholds

  • Tully Heiberg Forest: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1969 with 94.
  • Tully Heiberg Forest: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1972 with 47.
  • Tully Heiberg Forest: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 2002 with 15.
  • Tully Heiberg Forest: days with 10 cm (3.9 in) or more of snowfall in 39 years, most in 1993 with 18.
  • 15 fixed thresholds have at least one qualifying day at Tully Heiberg Forest.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Tully Heiberg Forest Days per year at Tully Heiberg Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 2002. 051015201967: 21968: 41969: 21973: 71974: 21975: 61977: 61979: 21980: 21981: 11982: 11983: 41987: 61988: 131990: 11991: 71993: 41994: 31995: 131996: 21997: 31999: 172001: 72002: 182003: 12004: 12005: 162006: 61967197319771981198719911995199920032006
Days per year at Tully Heiberg Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 2002.
Days at or above 30 C (86 F) per year at Tully Heiberg Forest
YearDaysDecade average
196722.7
196842.7
196922.7
197374.6
197424.6
197564.6
197764.6
197924.6
198024.5
198114.5
198214.5
198344.5
198764.5
1988134.5
199016.3
199176.3
199346.3
199436.3
1995136.3
199626.3
199736.3
1999176.3
200178.2
2002188.2
200318.2
200418.2
2005168.2
200668.2
First to last qualifying date each year at Tully Heiberg Forest For each year, a bar from the first to the last day at Tully Heiberg Forest meeting 30 C (86 F). 1967: 16 June 1967 to 23 July 19671968: 9 June 1968 to 18 July 19681969: 27 June 1969 to 28 June 19691973: 9 August 1973 to 5 September 19731974: 14 July 1974 to 15 July 19741975: 31 July 1975 to 26 August 19751977: 16 July 1977 to 28 August 19771979: 15 July 1979 to 1 August 19791980: 21 July 1980 to 22 July 19801981: 10 July 1981 to 10 July 19811982: 19 July 1982 to 19 July 19821983: 4 July 1983 to 6 September 19831987: 12 July 1987 to 18 August 19871988: 15 June 1988 to 15 August 19881990: 5 July 1990 to 5 July 19901991: 16 June 1991 to 17 September 19911993: 8 July 1993 to 1 September 19931994: 17 June 1994 to 9 July 19941995: 20 June 1995 to 1 September 19951996: 20 May 1996 to 21 May 19961997: 22 June 1997 to 11 August 19971999: 8 June 1999 to 6 September 19992001: 15 June 2001 to 10 August 20012002: 26 June 2002 to 11 September 20022003: 27 June 2003 to 27 June 20032004: 10 June 2004 to 10 June 20042005: 9 June 2005 to 11 August 20052006: 31 May 2006 to 3 August 20061967197419801987199319972003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tully Heiberg Forest meeting 30 C (86 F).
First to last qualifying date each year at Tully Heiberg Forest
YearFirst dateLast date
19671967-06-161967-07-23
19681968-06-091968-07-18
19691969-06-271969-06-28
19731973-08-091973-09-05
19741974-07-141974-07-15
19751975-07-311975-08-26
19771977-07-161977-08-28
19791979-07-151979-08-01
19801980-07-211980-07-22
19811981-07-101981-07-10
19821982-07-191982-07-19
19831983-07-041983-09-06
19871987-07-121987-08-18
19881988-06-151988-08-15
19901990-07-051990-07-05
19911991-06-161991-09-17
19931993-07-081993-09-01
19941994-06-171994-07-09
19951995-06-201995-09-01
19961996-05-201996-05-21
19971997-06-221997-08-11
19991999-06-081999-09-06
20012001-06-152001-08-10
20022002-06-262002-09-11
20032003-06-272003-06-27
20042004-06-102004-06-10
20052005-06-092005-08-11
20062006-05-312006-08-03

Every Fixed Threshold

Fixed thresholds at Tully Heiberg Forest
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days281820026
90 F (32.2 C): Days8419881
0 C (32 F): Ice days (max3994196950
0 C (32 F): Frost days (min351871972152
-10 C (14 F): Days with min3583198956
-20 C (-4 F): Days with min342419689
-30 C (-22 F): Days with min2119791
20 C (68 F): Tropical nights (min25819885
10 mm (0.39 in): Days with 10 mm or more rain3947197244
25 mm (0.98 in): Days with 25 mm or more rain3915200214
50 mm (1.97 in): Days with 50 mm or more rain22319941
100 mm (3.94 in): Days with 100 mm or more rain2119941
10 cm (3.9 in): Days with 10 cm or more snowfall391819934
25 cm (9.8 in): Days with 25 cm or more snowfall14319771
50 cm (19.7 in): Days with 50 cm or more snowfall2119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Tully Heiberg Forest 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).