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Tree Point Lt STN Weather Records (USC00509399)

Record envelope, standing records and threshold days for Tree Point Lt STN (USC00509399), Alaska, United States, with 42 years of record.

Key Facts for Tree Point Lt STN

  • Tree Point Lt STN (USC00509399) is a weather station in Alaska, United States at 54.80 latitude and -130.93 longitude, 11 m (36 ft) above sea level.
  • The station reports from 1929 to 1970, 42 years of record.
  • 1,464 records set at Tree Point Lt STN still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Tree Point Lt STN set a daily record precipitation of 41.4 mm (1.6 in) on 26 January 1970.

About the Station

  • Location: Alaska, United States, 54.80 latitude, -130.93 longitude.
  • Elevation: 11 m (36 ft).
  • Period of record: 1929 to 1970, 42 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Tree Point Lt STN, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tree Point Lt STN. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Tree Point Lt STN. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Tree Point Lt STN, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-23.9 C (-11.0 F)n/an/a
Feb16.7 C (62.1 F)-20.6 C (-5.1 F)n/an/a
Mar22.8 C (73.0 F)-18.9 C (-2.0 F)n/an/a
Apr24.4 C (75.9 F)-11.1 C (12.0 F)n/an/a
May28.9 C (84.0 F)-6.7 C (19.9 F)n/an/a
Jun30.6 C (87.1 F)0.0 C (32.0 F)n/an/a
Jul28.9 C (84.0 F)-1.7 C (28.9 F)n/an/a
Aug30.0 C (86.0 F)-1.1 C (30.0 F)n/an/a
Sep26.1 C (79.0 F)-2.2 C (28.0 F)n/an/a
Oct22.2 C (72.0 F)-10.0 C (14.0 F)n/an/a
Nov19.4 C (66.9 F)-13.3 C (8.1 F)n/an/a
Dec16.7 C (62.1 F)-19.4 C (-2.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tree Point Lt STN by the year they were set 1,464 records at Tree Point Lt STN still stand. 1936 holds the most, with 94. 02550751001929: 171930: 541931: 411932: 321933: 651934: 431935: 621936: 941937: 461938: 721939: 321940: 541941: 551944: 451945: 251946: 201947: 301948: 481949: 221950: 431951: 321952: 201953: 351954: 341955: 581956: 341957: 161958: 51959: 121960: 201961: 231962: 241963: 541964: 341965: 311966: 391967: 281968: 281969: 341970: 31929193319371941194719511955195919631967
1,464 records at Tree Point Lt STN still stand. 1936 holds the most, with 94.
Standing records at Tree Point Lt STN by the year they were set
Year setStanding records
192917
193054
193141
193232
193365
193443
193562
193694
193746
193872
193932
194054
194155
194445
194525
194620
194730
194848
194922
195043
195132
195220
195335
195434
195558
195634
195716
19585
195912
196020
196123
196224
196354
196434
196531
196639
196728
196828
196934
19703

All-Time Record Progression

2 new records
When Tree Point Lt STN set new all-time records 2 all-time records were set at Tree Point Lt STN between 15 December 1964 and 23 September 1967. Each dot is a new record. Record low maximum temperatureRecord daily precipitation15 December 1964: Record low maximum temperature -11.7 C (10.9 F)23 September 1967: Record daily precipitation 114.3 mm (4.5 in)1965
2 all-time records were set at Tree Point Lt STN between 15 December 1964 and 23 September 1967. Each dot is a new record.
When Tree Point Lt STN set new all-time records
DateKindDetail
1964-12-15Record low maximum temperatureRecord low maximum temperature -11.7 C (10.9 F)
1967-09-23Record daily precipitationRecord daily precipitation 114.3 mm (4.5 in)

Wettest Day of Each Month

Sep: 114.3 mm (4.5 in)
Record daily precipitation for each month at Tree Point Lt STN The wettest day on record for each calendar month at Tree Point Lt STN. The most was 114.3 mm (4.5 in) on 23 September 1967. 050100150 Jan: 63.5 mm (2.5 in), 8 January 1938 Jan Feb: 75.7 mm (3.0 in), 23 February 1932 Feb Mar: 59.4 mm (2.3 in), 28 March 1951 Mar Apr: 58.7 mm (2.3 in), 8 April 1968 Apr May: 61.0 mm (2.4 in), 5 May 1931 May Jun: 79.5 mm (3.1 in), 7 June 1962 Jun Jul: 88.1 mm (3.5 in), 27 July 1967 Jul Aug: 75.4 mm (3.0 in), 28 August 1940 Aug Sep: 114.3 mm (4.5 in), 23 September 1967 Sep Oct: 95.3 mm (3.8 in), 26 October 1933 Oct Nov: 88.9 mm (3.5 in), 18 November 1932 Nov Dec: 91.4 mm (3.6 in), 4 December 1954 Dec
The wettest day on record for each calendar month at Tree Point Lt STN. The most was 114.3 mm (4.5 in) on 23 September 1967.
Record daily precipitation for each month at Tree Point Lt STN
MonthRecord daily precipitation (mm)Date
Jan63.5 mm (2.5 in)8 January 1938
Feb75.7 mm (3.0 in)23 February 1932
Mar59.4 mm (2.3 in)28 March 1951
Apr58.7 mm (2.3 in)8 April 1968
May61.0 mm (2.4 in)5 May 1931
Jun79.5 mm (3.1 in)7 June 1962
Jul88.1 mm (3.5 in)27 July 1967
Aug75.4 mm (3.0 in)28 August 1940
Sep114.3 mm (4.5 in)23 September 1967
Oct95.3 mm (3.8 in)26 October 1933
Nov88.9 mm (3.5 in)18 November 1932
Dec91.4 mm (3.6 in)4 December 1954

Period of Record Coverage

1929 to 1970
Days with data per year at Tree Point Lt STN 40 years of record at Tree Point Lt STN, 1929 to 1970. 9 years have data for under 90 percent of days and are left out of rankings: 1929, 1937, 1941, 1944, 1945, 1947, 1948, 1958 and others. 1929: 84 of 365 days1930: 363 of 365 days1931: 362 of 365 days1932: 363 of 366 days1933: 361 of 365 days1934: 359 of 365 days1935: 347 of 365 days1936: 365 of 366 days1937: 318 of 365 days1938: 360 of 365 days1939: 359 of 365 days1940: 359 of 366 days1941: 325 of 365 days1944: 320 of 366 days1945: 292 of 365 days1946: 343 of 365 days1947: 205 of 365 days1948: 304 of 366 days1949: 362 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 358 of 366 days1953: 364 of 365 days1954: 349 of 365 days1955: 362 of 365 days1956: 360 of 366 days1957: 353 of 365 days1958: 89 of 365 days1959: 361 of 365 days1960: 364 of 366 days1961: 347 of 365 days1962: 330 of 365 days1963: 364 of 365 days1964: 364 of 366 days1965: 364 of 365 days1966: 362 of 365 days1967: 361 of 365 days1968: 354 of 366 days1969: 339 of 365 days1970: 24 of 365 days193019351940194519501955196019651970
40 years of record at Tree Point Lt STN, 1929 to 1970. 9 years have data for under 90 percent of days and are left out of rankings: 1929, 1937, 1941, 1944, 1945, 1947, 1948, 1958 and others.
Days with data per year at Tree Point Lt STN
YearDays with dataShare of yearComplete
19298423%No
193036399%Yes
193136299%Yes
193236399%Yes
193336199%Yes
193435998%Yes
193534795%Yes
1936365100%Yes
193731887%No
193836099%Yes
193935998%Yes
194035998%Yes
194132589%No
194432087%No
194529280%No
194634394%Yes
194720556%No
194830483%No
194936299%Yes
1950365100%Yes
1951365100%Yes
195235898%Yes
1953364100%Yes
195434996%Yes
195536299%Yes
195636098%Yes
195735397%Yes
19588924%No
195936199%Yes
196036499%Yes
196134795%Yes
196233090%Yes
1963364100%Yes
196436499%Yes
1965364100%Yes
196636299%Yes
196736199%Yes
196835497%Yes
196933993%Yes
1970247%No

Latest Records

20
Latest records at Tree Point Lt STN
DateStationRecordValueBeat old record byOld record stoodSignificance
26 January 1970Tree Point Lt STN, USdaily rain41.4 mm (1.6 in)4.6 mm (0.18 in)32 years16 of 100 (Routine)
14 January 1970Tree Point Lt STN, USdaily low max-4.4 C (24.1 F)2.7 C (4.9 F)20 years16 of 100 (Routine)
13 January 1970Tree Point Lt STN, USdaily low max-5.0 C (23.0 F)1.1 C (2.0 F)20 years12 of 100 (Routine)
2 January 1970Tree Point Lt STN, USdaily high max12.2 C (54.0 F)2.2 C (4.0 F)39 years20 of 100 (Routine)
27 December 1969Tree Point Lt STN, USdaily high max10.6 C (51.1 F)1.2 C (2.2 F)34 years17 of 100 (Routine)
25 December 1969Tree Point Lt STN, USdaily high max10.0 C (50.0 F)0.6 C (1.1 F)16 years10 of 100 (Routine)
24 December 1969Tree Point Lt STN, USdaily high min (Tie)5.6 C (42.1 F)tie40 years4 of 100 (Routine)
24 December 1969Tree Point Lt STN, USdaily high max (Tie)10.0 C (50.0 F)tie8 years1 of 100 (Routine)
20 December 1969Tree Point Lt STN, USdaily high max11.7 C (53.1 F)1.7 C (3.1 F)34 years18 of 100 (Routine)
20 December 1969Tree Point Lt STN, USdaily high min (Tie)5.6 C (42.1 F)tie28 years3 of 100 (Routine)
19 December 1969Tree Point Lt STN, USdaily high max12.8 C (55.0 F)0.6 C (1.1 F)34 years15 of 100 (Routine)
8 December 1969Tree Point Lt STN, USdaily high min5.6 C (42.1 F)1.2 C (2.2 F)10 years9 of 100 (Routine)
7 December 1969Tree Point Lt STN, USdaily rain (Tie)57.2 mm (2.3 in)tie24 years2 of 100 (Routine)
30 November 1969Tree Point Lt STN, USdaily rain44.5 mm (1.8 in)3.6 mm (0.14 in)10 years9 of 100 (Routine)
21 November 1969Tree Point Lt STN, USdaily rain61.0 mm (2.4 in)15.3 mm (0.6 in)0 years16 of 100 (Routine)
21 November 1969Tree Point Lt STN, USdaily high min (Tie)7.8 C (46.0 F)tie15 years2 of 100 (Routine)
20 November 1969Tree Point Lt STN, USdaily rain48.3 mm (1.9 in)7.7 mm (0.30 in)39 years21 of 100 (Routine)
19 November 1969Tree Point Lt STN, USdaily rain52.1 mm (2.1 in)18.8 mm (0.7 in)10 years21 of 100 (Routine)
14 November 1969Tree Point Lt STN, USdaily rain53.3 mm (2.1 in)15.5 mm (0.6 in)24 years23 of 100 (Routine)
1 November 1969Tree Point Lt STN, USdaily high min9.4 C (48.9 F)0.5 C (0.9 F)24 years12 of 100 (Routine)

Climate Trend

27 complete years, 1930 to 1969
Annual mean temperature at Tree Point Lt STN as warming stripes, 1930 to 1969 One stripe for each of 27 complete years at Tree Point Lt STN, 1930 to 1969. Blue stripes are years cooler than the station's own mean of 7.5 C (45.4 F); red stripes are warmer. The coolest year was 1955, at 5.9 C (42.5 F), and the warmest was 1963, at 8.8 C (47.9 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1930: 7.5 C, 0.0 C from the station mean1931: 8.0 C, +0.5 C from the station mean1932: 7.0 C, -0.4 C from the station mean1933: 6.1 C, -1.4 C from the station mean1934: 7.9 C, +0.4 C from the station mean1935: 7.0 C, -0.4 C from the station mean1936: 7.3 C, -0.1 C from the station mean1938: 7.3 C, -0.2 C from the station mean1939: 8.1 C, +0.6 C from the station mean1946: 7.8 C, +0.3 C from the station mean1949: 7.4 C, -0.1 C from the station mean1950: 6.2 C, -1.3 C from the station mean1951: 6.9 C, -0.5 C from the station mean1952: 7.3 C, -0.2 C from the station mean1953: 8.2 C, +0.8 C from the station mean1955: 5.9 C, -1.6 C from the station mean1957: 7.9 C, +0.4 C from the station mean1959: 7.9 C, +0.5 C from the station mean1960: 8.4 C, +0.9 C from the station mean1961: 7.7 C, +0.2 C from the station mean1963: 8.8 C, +1.4 C from the station mean1964: 7.3 C, -0.2 C from the station mean1965: 6.8 C, -0.6 C from the station mean1966: 7.1 C, -0.3 C from the station mean1967: 8.2 C, +0.7 C from the station mean1968: 7.6 C, +0.2 C from the station mean1969: 7.8 C, +0.3 C from the station mean19301935194019451950195519601965
One stripe for each of 27 complete years at Tree Point Lt STN, 1930 to 1969. Blue stripes are years cooler than the station's own mean of 7.5 C (45.4 F); red stripes are warmer. The coolest year was 1955, at 5.9 C (42.5 F), and the warmest was 1963, at 8.8 C (47.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Tree Point Lt STN as warming stripes, 1930 to 1969
YearAnnual mean temperatureDifference from the station mean
19307.5 C-0.01 C
19318.0 C+0.52 C
19327.0 C-0.42 C
19336.1 C-1.36 C
19347.9 C+0.40 C
19357.0 C-0.44 C
19367.3 C-0.12 C
19387.3 C-0.15 C
19398.1 C+0.62 C
19467.8 C+0.35 C
19497.4 C-0.10 C
19506.2 C-1.29 C
19516.9 C-0.54 C
19527.3 C-0.16 C
19538.2 C+0.77 C
19555.9 C-1.60 C
19577.9 C+0.42 C
19597.9 C+0.48 C
19608.4 C+0.93 C
19617.7 C+0.21 C
19638.8 C+1.38 C
19647.3 C-0.15 C
19656.8 C-0.63 C
19667.1 C-0.34 C
19678.2 C+0.75 C
19687.6 C+0.17 C
19697.8 C+0.31 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1929 to 1970
Yearly extremes at Tree Point Lt STN: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)30.6 C (87.1 F)193925.6 C (78.1 F)40
Coldest night (TNn)-23.9 C (-11.0 F)1947-14.7 C (5.5 F)40
Wettest day (Rx1day)114.3 mm (4.5 in)196765.3 mm (2.6 in)40
Wettest five days (Rx5day)231.6 mm (9.1 in)1967150.1 mm (5.9 in)40
Longest dry spell (CDD)24 days193015 days40

Hottest day (TXx)

Hottest day (TXx) at Tree Point Lt STN by year The hottest day of the year at Tree Point Lt STN, 1929 to 1970. The record is 30.6 C (87.1 F) in 1939, marked on the chart; the median year is 25.6 C (78.1 F). 10152025303519301940195019601970Record: 30.6 C (87.1 F) in 1939
The hottest day of the year at Tree Point Lt STN, 1929 to 1970. The record is 30.6 C (87.1 F) in 1939, marked on the chart; the median year is 25.6 C (78.1 F).
Hottest day (TXx) at Tree Point Lt STN by year
YearHottest day (TXx)
192913.9 C (57.0 F)
193027.8 C (82.0 F)
193126.7 C (80.1 F)
193225.6 C (78.1 F)
193326.1 C (79.0 F)
193424.4 C (75.9 F)
193526.1 C (79.0 F)
193628.3 C (82.9 F)
193725.6 C (78.1 F)
193824.4 C (75.9 F)
193930.6 C (87.1 F)
194028.9 C (84.0 F)
194127.2 C (81.0 F)
194428.9 C (84.0 F)
194526.7 C (80.1 F)
194623.9 C (75.0 F)
194727.8 C (82.0 F)
194828.9 C (84.0 F)
194926.1 C (79.0 F)
195022.8 C (73.0 F)
195123.9 C (75.0 F)
195226.1 C (79.0 F)
195325.0 C (77.0 F)
195423.9 C (75.0 F)
195526.7 C (80.1 F)
195624.4 C (75.9 F)
195728.9 C (84.0 F)
195815.0 C (59.0 F)
195927.2 C (81.0 F)
196029.4 C (84.9 F)
196122.8 C (73.0 F)
196221.1 C (70.0 F)
196326.1 C (79.0 F)
196424.4 C (75.9 F)
196520.6 C (69.1 F)
196625.6 C (78.1 F)
196722.8 C (73.0 F)
196822.2 C (72.0 F)
196923.9 C (75.0 F)
197012.2 C (54.0 F)

Coldest night (TNn)

Coldest night (TNn) at Tree Point Lt STN by year The coldest night of the year at Tree Point Lt STN, 1929 to 1970. The record is -23.9 C (-11.0 F) in 1947, marked on the chart; the median year is -14.7 C (5.5 F). -25-20-15-10-519301940195019601970Record: -23.9 C (-11.0 F) in 1947
The coldest night of the year at Tree Point Lt STN, 1929 to 1970. The record is -23.9 C (-11.0 F) in 1947, marked on the chart; the median year is -14.7 C (5.5 F).
Coldest night (TNn) at Tree Point Lt STN by year
YearColdest night (TNn)
1929-10.6 C (12.9 F)
1930-10.6 C (12.9 F)
1931-11.7 C (10.9 F)
1932-15.0 C (5.0 F)
1933-17.8 C (0.0 F)
1934-16.1 C (3.0 F)
1935-17.2 C (1.0 F)
1936-17.8 C (0.0 F)
1937-19.4 C (-2.9 F)
1938-14.4 C (6.1 F)
1939-20.6 C (-5.1 F)
1940-13.3 C (8.1 F)
1941-11.1 C (12.0 F)
1944-7.2 C (19.0 F)
1945-8.3 C (17.1 F)
1946-10.0 C (14.0 F)
1947-23.9 C (-11.0 F)
1948-19.4 C (-2.9 F)
1949-17.8 C (0.0 F)
1950-20.6 C (-5.1 F)
1951-13.9 C (7.0 F)
1952-14.4 C (6.1 F)
1953-16.7 C (1.9 F)
1954-15.6 C (3.9 F)
1955-18.9 C (-2.0 F)
1956-15.0 C (5.0 F)
1957-15.6 C (3.9 F)
1958-10.6 C (12.9 F)
1959-11.7 C (10.9 F)
1960-5.6 C (21.9 F)
1961-7.8 C (18.0 F)
1962-10.6 C (12.9 F)
1963-11.7 C (10.9 F)
1964-17.2 C (1.0 F)
1965-16.7 C (1.9 F)
1966-16.1 C (3.0 F)
1967-8.9 C (16.0 F)
1968-17.8 C (0.0 F)
1969-13.9 C (7.0 F)
1970-13.3 C (8.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tree Point Lt STN by year The wettest day of the year at Tree Point Lt STN, 1929 to 1970. The record is 114.3 mm (4.5 in) in 1967, marked on the chart; the median year is 65.3 mm (2.6 in). 40608010012019301940195019601970Record: 114.3 mm (4.5 in) in 1967
The wettest day of the year at Tree Point Lt STN, 1929 to 1970. The record is 114.3 mm (4.5 in) in 1967, marked on the chart; the median year is 65.3 mm (2.6 in).
Wettest day (Rx1day) at Tree Point Lt STN by year
YearWettest day (Rx1day)
192976.2 mm (3.0 in)
193066.0 mm (2.6 in)
193183.8 mm (3.3 in)
193289.4 mm (3.5 in)
193395.3 mm (3.8 in)
193450.8 mm (2.0 in)
193550.8 mm (2.0 in)
193650.8 mm (2.0 in)
193763.5 mm (2.5 in)
193863.5 mm (2.5 in)
193954.6 mm (2.1 in)
194075.4 mm (3.0 in)
194171.6 mm (2.8 in)
194466.8 mm (2.6 in)
194565.0 mm (2.6 in)
194653.3 mm (2.1 in)
194755.1 mm (2.2 in)
194853.3 mm (2.1 in)
194961.5 mm (2.4 in)
195060.7 mm (2.4 in)
195159.4 mm (2.3 in)
195253.3 mm (2.1 in)
195369.1 mm (2.7 in)
195491.4 mm (3.6 in)
195571.4 mm (2.8 in)
195658.4 mm (2.3 in)
195759.2 mm (2.3 in)
195855.9 mm (2.2 in)
195979.0 mm (3.1 in)
196066.3 mm (2.6 in)
196161.0 mm (2.4 in)
196279.5 mm (3.1 in)
196376.2 mm (3.0 in)
196473.7 mm (2.9 in)
196568.6 mm (2.7 in)
196665.5 mm (2.6 in)
1967114.3 mm (4.5 in)
196867.3 mm (2.6 in)
196963.5 mm (2.5 in)
197049.0 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tree Point Lt STN by year The wettest five days of the year at Tree Point Lt STN, 1929 to 1970. The record is 231.6 mm (9.1 in) in 1967, marked on the chart; the median year is 150.1 mm (5.9 in). 5010015020025019301940195019601970Record: 231.6 mm (9.1 in) in 1967
The wettest five days of the year at Tree Point Lt STN, 1929 to 1970. The record is 231.6 mm (9.1 in) in 1967, marked on the chart; the median year is 150.1 mm (5.9 in).
Wettest five days (Rx5day) at Tree Point Lt STN by year
YearWettest five days (Rx5day)
1929181.6 mm (7.1 in)
1930157.5 mm (6.2 in)
1931165.8 mm (6.5 in)
1932223.5 mm (8.8 in)
1933190.5 mm (7.5 in)
1934108.0 mm (4.3 in)
1935156.2 mm (6.1 in)
1936108.4 mm (4.3 in)
193794.0 mm (3.7 in)
1938140.4 mm (5.5 in)
1939116.1 mm (4.6 in)
1940147.9 mm (5.8 in)
1941148.1 mm (5.8 in)
1944156.5 mm (6.2 in)
1945187.1 mm (7.4 in)
1946150.1 mm (5.9 in)
1947102.7 mm (4.0 in)
1948129.3 mm (5.1 in)
1949125.9 mm (5.0 in)
1950102.6 mm (4.0 in)
1951119.6 mm (4.7 in)
1952117.6 mm (4.6 in)
1953133.1 mm (5.2 in)
1954186.2 mm (7.3 in)
1955155.9 mm (6.1 in)
1956136.4 mm (5.4 in)
1957167.2 mm (6.6 in)
1958212.0 mm (8.3 in)
1959159.8 mm (6.3 in)
1960144.7 mm (5.7 in)
1961188.3 mm (7.4 in)
1962195.3 mm (7.7 in)
1963149.1 mm (5.9 in)
1964202.6 mm (8.0 in)
1965170.2 mm (6.7 in)
1966140.5 mm (5.5 in)
1967231.6 mm (9.1 in)
1968150.1 mm (5.9 in)
1969221.8 mm (8.7 in)
197096.8 mm (3.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tree Point Lt STN by year The longest dry spell of the year at Tree Point Lt STN, 1929 to 1970. The record is 24 days in 1930, marked on the chart; the median year is 15 days. 010203019301940195019601970Record: 24 days in 1930
The longest dry spell of the year at Tree Point Lt STN, 1929 to 1970. The record is 24 days in 1930, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Tree Point Lt STN by year
YearLongest dry spell (CDD)
19292 days
193024 days
193110 days
193213 days
19338 days
193415 days
193518 days
193619 days
193712 days
193821 days
19398 days
194015 days
194116 days
194411 days
194515 days
194618 days
19477 days
194811 days
194915 days
195018 days
195118 days
195215 days
195311 days
195411 days
195521 days
195610 days
195721 days
195812 days
195910 days
196014 days
196116 days
196213 days
196319 days
196414 days
196517 days
196611 days
196712 days
196816 days
196918 days
19707 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

27 years with a frost

Across 27 years with a frost, the median last spring frost at Tree Point Lt STN falls on 3 May and the median first autumn frost on 17 October, which leaves a median of 168 days between them.

Fitted over all years, the growing season changes by +23.2 days per decade at this station.

Frost dates and growing season at Tree Point Lt STN
MeasureMedian, all yearsEarliest periodRecent period (1930 to 1969)Recent against earliestFitted trend
Last spring frost3 Mayn/a3 Mayn/a-8.9 days per decade
First autumn frost17 Octobern/a17 Octobern/a+14.4 days per decade
Growing days168 daysn/a168 daysn/a+23.2 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

32 years, 1930 to 1969

A day with at least 65.9 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 120.5 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Tree Point Lt STN: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years65.9 mm (2.6 in)
5 years78.4 mm (3.1 in)
10 years87.5 mm (3.4 in)
25 years99.9 mm (3.9 in)
50 years109.9 mm (4.3 in)Longer than the 32 years of record
100 years120.5 mm (4.7 in)Longer than the 32 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 32 years of values from 1930 to 1969.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 114.3 mm (4.5 in) in 1967; 95.3 mm (3.8 in) in 1933; 91.4 mm (3.6 in) in 1954.

Download the Data

  • Data for Tree Point Lt STN standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Tree Point Lt STN 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).