Daily records
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Built 2026-10-19 (19 October 2026)

Lanna Weather Records (SWE00138458)

Record envelope, standing records and threshold days for Lanna (SWE00138458), Sweden, with 82 years of record.

Key Facts for Lanna

  • Lanna (SWE00138458) is a weather station in Sweden at 58.35 latitude and 13.13 longitude, 80 m (262 ft) above sea level.
  • The station reports from 1945 to 2026, 82 years of record.
  • 1,464 records set at Lanna still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Lanna set a daily record precipitation of 21.0 mm (0.8 in) on 13 May 2026.

About the Station

  • Location: Sweden, 58.35 latitude, 13.13 longitude.
  • Elevation: 80 m (262 ft).
  • Period of record: 1945 to 2026, 82 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Lanna, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lanna. 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 Lanna. 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 Lanna, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan8.5 C (47.3 F)-25.4 C (-13.7 F)n/an/a
Feb10.1 C (50.2 F)-37.0 C (-34.6 F)n/an/a
Mar18.8 C (65.8 F)-26.9 C (-16.4 F)n/an/a
Apr25.0 C (77.0 F)-13.2 C (8.2 F)n/an/a
May30.5 C (86.9 F)-4.2 C (24.4 F)n/an/a
Jun35.0 C (95.0 F)-1.0 C (30.2 F)n/an/a
Jul32.3 C (90.1 F)3.9 C (39.0 F)n/an/a
Aug31.9 C (89.4 F)0.6 C (33.1 F)n/an/a
Sep26.7 C (80.1 F)-4.7 C (23.5 F)n/an/a
Oct19.8 C (67.6 F)-9.0 C (15.8 F)n/an/a
Nov12.3 C (54.1 F)-19.7 C (-3.5 F)n/an/a
Dec11.0 C (51.8 F)-26.4 C (-15.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lanna by the year they were set 1,464 records at Lanna still stand. 1947 holds the most, with 81. 02550751001945: 591946: 401947: 811948: 471949: 781950: 241951: 351952: 671953: 371954: 261955: 671956: 481957: 521958: 381959: 521960: 421961: 641962: 581963: 431964: 441965: 541966: 631967: 391968: 691969: 631970: 581971: 651980: 91983: 221984: 171985: 319451949195319571961196519691983
1,464 records at Lanna still stand. 1947 holds the most, with 81.
Standing records at Lanna by the year they were set
Year setStanding records
194559
194640
194781
194847
194978
195024
195135
195267
195337
195426
195567
195648
195752
195838
195952
196042
196164
196258
196343
196444
196554
196663
196739
196869
196963
197058
197165
19809
198322
198417
19853

All-Time Record Progression

1 new records
When Lanna set new all-time records 1 all-time records were set at Lanna between 19 August 2014 and 19 August 2014. Each dot is a new record. Record daily precipitation19 August 2014: Record daily precipitation 76.1 mm (3.0 in)2015
1 all-time records were set at Lanna between 19 August 2014 and 19 August 2014. Each dot is a new record.
When Lanna set new all-time records
DateKindDetail
2014-08-19Record daily precipitationRecord daily precipitation 76.1 mm (3.0 in)

Wettest Day of Each Month

Aug: 76.1 mm (3.0 in)
Record daily precipitation for each month at Lanna The wettest day on record for each calendar month at Lanna. The most was 76.1 mm (3.0 in) on 19 August 2014. 020406080 Jan: 18.5 mm (0.7 in), 9 January 2014 Jan Feb: 27.2 mm (1.1 in), 7 February 1990 Feb Mar: 26.5 mm (1.0 in), 20 March 1977 Mar Apr: 30.2 mm (1.2 in), 7 April 1949 Apr May: 49.0 mm (1.9 in), 3 May 1945 May Jun: 56.9 mm (2.2 in), 16 June 1987 Jun Jul: 60.4 mm (2.4 in), 17 July 1958 Jul Aug: 76.1 mm (3.0 in), 19 August 2014 Aug Sep: 44.9 mm (1.8 in), 11 September 1946 Sep Oct: 39.6 mm (1.6 in), 17 October 1967 Oct Nov: 33.4 mm (1.3 in), 18 November 1981 Nov Dec: 20.5 mm (0.8 in), 27 December 1976 Dec
The wettest day on record for each calendar month at Lanna. The most was 76.1 mm (3.0 in) on 19 August 2014.
Record daily precipitation for each month at Lanna
MonthRecord daily precipitation (mm)Date
Jan18.5 mm (0.7 in)9 January 2014
Feb27.2 mm (1.1 in)7 February 1990
Mar26.5 mm (1.0 in)20 March 1977
Apr30.2 mm (1.2 in)7 April 1949
May49.0 mm (1.9 in)3 May 1945
Jun56.9 mm (2.2 in)16 June 1987
Jul60.4 mm (2.4 in)17 July 1958
Aug76.1 mm (3.0 in)19 August 2014
Sep44.9 mm (1.8 in)11 September 1946
Oct39.6 mm (1.6 in)17 October 1967
Nov33.4 mm (1.3 in)18 November 1981
Dec20.5 mm (0.8 in)27 December 1976

Period of Record Coverage

1945 to 1985
Days with data per year at Lanna 32 years of record at Lanna, 1945 to 1985. 7 years have data for under 90 percent of days and are left out of rankings: 1946, 1947, 1980, 1982, 1983, 1984, 1985. 1945: 349 of 365 days1946: 185 of 365 days1947: 317 of 365 days1948: 366 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 364 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1980: 31 of 366 days1982: 30 of 365 days1983: 210 of 365 days1984: 183 of 366 days1985: 61 of 365 days19451950195519601965197019801985
32 years of record at Lanna, 1945 to 1985. 7 years have data for under 90 percent of days and are left out of rankings: 1946, 1947, 1980, 1982, 1983, 1984, 1985.
Days with data per year at Lanna
YearDays with dataShare of yearComplete
194534996%Yes
194618551%No
194731787%No
1948366100%Yes
1949365100%Yes
1950365100%Yes
1951365100%Yes
195236499%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1980318%No
1982308%No
198321058%No
198418350%No
19856117%No

Latest Records

20
Latest records at Lanna
DateStationRecordValueBeat old record byOld record stoodSignificance
13 May 2026Lanna, SEdaily rain21.0 mm (0.8 in)6.0 mm (0.24 in)56 years20 of 100 (Routine)
6 February 2026Lanna, SEdaily rain10.7 mm (0.4 in)0.1 mm (0.00 in)38 years19 of 100 (Routine)
8 December 2025Lanna, SEdaily rain9.4 mm (0.37 in)0.3 mm (0.01 in)4 years10 of 100 (Routine)
5 September 2025Lanna, SEdaily rain26.7 mm (1.1 in)6.9 mm (0.27 in)60 years38 of 100 (Notable)
7 January 2025Lanna, SEdaily rain10.6 mm (0.4 in)0.5 mm (0.02 in)76 years20 of 100 (Routine)
31 December 2024Lanna, SEdaily rain11.3 mm (0.4 in)2.8 mm (0.11 in)12 years20 of 100 (Routine)
24 September 2024Lanna, SEdaily rain18.6 mm (0.7 in)3.5 mm (0.14 in)41 years20 of 100 (Routine)
12 April 2024Lanna, SEdaily rain9.2 mm (0.36 in)0.3 mm (0.01 in)25 years15 of 100 (Routine)
9 April 2024Lanna, SEdaily rain6.8 mm (0.27 in)0.9 mm (0.04 in)74 years20 of 100 (Routine)
15 February 2024Lanna, SEdaily rain9.9 mm (0.39 in)0.3 mm (0.01 in)66 years20 of 100 (Routine)
12 February 2024Lanna, SEdaily rain14.4 mm (0.6 in)4.8 mm (0.19 in)61 years20 of 100 (Routine)
29 October 2023Lanna, SEdaily rain12.7 mm (0.5 in)0.6 mm (0.02 in)21 years14 of 100 (Routine)
19 September 2023Lanna, SEdaily rain19.4 mm (0.8 in)5.2 mm (0.20 in)49 years20 of 100 (Routine)
26 August 2023Lanna, SEdaily rain56.0 mm (2.2 in)13.1 mm (0.5 in)44 years40 of 100 (Notable)
12 August 2023Lanna, SEdaily rain36.5 mm (1.4 in)6.5 mm (0.26 in)40 years29 of 100 (Routine)
6 August 2023Lanna, SEdaily rain26.1 mm (1.0 in)3.9 mm (0.15 in)14 years17 of 100 (Routine)
12 July 2023Lanna, SEdaily rain38.1 mm (1.5 in)22.0 mm (0.9 in)29 years44 of 100 (Notable)
16 May 2023Lanna, SEdaily rain29.6 mm (1.2 in)8.8 mm (0.35 in)40 years37 of 100 (Notable)
30 March 2023Lanna, SEdaily rain (Tie)6.0 mm (0.24 in)tie69 years6 of 100 (Routine)
13 March 2023Lanna, SEdaily rain10.4 mm (0.4 in)1.8 mm (0.07 in)41 years20 of 100 (Routine)

Climate Trend

24 complete years, 1948 to 1971
Annual mean temperature at Lanna as warming stripes, 1948 to 1971 One stripe for each of 24 complete years at Lanna, 1948 to 1971. Blue stripes are years cooler than the station's own mean of 5.9 C (42.7 F); red stripes are warmer. The coolest year was 1970, at 4.4 C (40.0 F), and the warmest was 1949, at 7.9 C (46.1 F). The strongest colour marks a difference of 2.0 C (3.6 F). 1948: 6.6 C, +0.7 C from the station mean1949: 7.9 C, +1.9 C from the station mean1950: 6.2 C, +0.2 C from the station mean1951: 6.2 C, +0.3 C from the station mean1952: 5.1 C, -0.8 C from the station mean1953: 7.2 C, +1.3 C from the station mean1954: 5.7 C, -0.2 C from the station mean1955: 5.3 C, -0.6 C from the station mean1956: 4.7 C, -1.2 C from the station mean1957: 6.3 C, +0.4 C from the station mean1958: 5.6 C, -0.3 C from the station mean1959: 7.5 C, +1.5 C from the station mean1960: 6.1 C, +0.2 C from the station mean1961: 7.0 C, +1.1 C from the station mean1962: 4.9 C, -1.0 C from the station mean1963: 4.9 C, -1.0 C from the station mean1964: 6.1 C, +0.2 C from the station mean1965: 5.2 C, -0.7 C from the station mean1966: 5.0 C, -0.9 C from the station mean1967: 6.5 C, +0.6 C from the station mean1968: 5.8 C, -0.1 C from the station mean1969: 5.4 C, -0.5 C from the station mean1970: 4.4 C, -1.5 C from the station mean1971: 6.5 C, +0.6 C from the station mean194819501952195419561958196019621964196619681970
One stripe for each of 24 complete years at Lanna, 1948 to 1971. Blue stripes are years cooler than the station's own mean of 5.9 C (42.7 F); red stripes are warmer. The coolest year was 1970, at 4.4 C (40.0 F), and the warmest was 1949, at 7.9 C (46.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Lanna as warming stripes, 1948 to 1971
YearAnnual mean temperatureDifference from the station mean
19486.6 C+0.66 C
19497.9 C+1.93 C
19506.2 C+0.25 C
19516.2 C+0.30 C
19525.1 C-0.81 C
19537.2 C+1.32 C
19545.7 C-0.24 C
19555.3 C-0.61 C
19564.7 C-1.21 C
19576.3 C+0.39 C
19585.6 C-0.33 C
19597.5 C+1.55 C
19606.1 C+0.17 C
19617.0 C+1.12 C
19624.9 C-0.99 C
19634.9 C-1.03 C
19646.1 C+0.18 C
19655.2 C-0.72 C
19665.0 C-0.90 C
19676.5 C+0.60 C
19685.8 C-0.12 C
19695.4 C-0.54 C
19704.4 C-1.50 C
19716.5 C+0.59 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

1945 to 2026
Yearly extremes at Lanna: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)194729.0 C (84.1 F)32
Coldest night (TNn)-37.0 C (-34.6 F)1966-20.0 C (-4.0 F)32
Wettest day (Rx1day)76.1 mm (3.0 in)201430.0 mm (1.2 in)82
Wettest five days (Rx5day)106.0 mm (4.2 in)201450.8 mm (2.0 in)82
Longest dry spell (CDD)61 days197423 days82

Hottest day (TXx)

Hottest day (TXx) at Lanna by year The hottest day of the year at Lanna, 1945 to 2026. The record is 35.0 C (95.0 F) in 1947, marked on the chart; the median year is 29.0 C (84.1 F). 0102030401960198020002020Record: 35.0 C (95.0 F) in 1947
The hottest day of the year at Lanna, 1945 to 2026. The record is 35.0 C (95.0 F) in 1947, marked on the chart; the median year is 29.0 C (84.1 F).
Hottest day (TXx) at Lanna by year
YearHottest day (TXx)
194531.0 C (87.8 F)
194630.5 C (86.9 F)
194735.0 C (95.0 F)
194832.0 C (89.6 F)
194929.0 C (84.2 F)
195026.5 C (79.7 F)
195127.2 C (81.0 F)
195228.0 C (82.4 F)
195329.5 C (85.1 F)
195426.8 C (80.2 F)
195531.6 C (88.9 F)
195627.0 C (80.6 F)
195728.2 C (82.8 F)
195830.4 C (86.7 F)
195929.6 C (85.3 F)
196029.2 C (84.6 F)
196127.3 C (81.1 F)
196224.6 C (76.3 F)
196327.7 C (81.9 F)
196429.7 C (85.5 F)
196526.3 C (79.3 F)
196629.4 C (84.9 F)
196728.2 C (82.8 F)
196830.6 C (87.1 F)
196932.3 C (90.1 F)
197032.7 C (90.9 F)
197128.9 C (84.0 F)
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
19807.8 C (46.0 F)
1981n/a
198215.7 C (60.3 F)
198330.0 C (86.0 F)
198427.1 C (80.8 F)
198524.1 C (75.4 F)
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Lanna by year The coldest night of the year at Lanna, 1945 to 2026. The record is -37.0 C (-34.6 F) in 1966, marked on the chart; the median year is -20.0 C (-4.0 F). -40-30-20-1001960198020002020Record: -37.0 C (-34.6 F) in 1966
The coldest night of the year at Lanna, 1945 to 2026. The record is -37.0 C (-34.6 F) in 1966, marked on the chart; the median year is -20.0 C (-4.0 F).
Coldest night (TNn) at Lanna by year
YearColdest night (TNn)
1945-21.5 C (-6.7 F)
1946-22.8 C (-9.0 F)
1947-34.8 C (-30.6 F)
1948-23.0 C (-9.4 F)
1949-12.0 C (10.4 F)
1950-20.5 C (-4.9 F)
1951-18.0 C (-0.4 F)
1952-18.2 C (-0.8 F)
1953-20.0 C (-4.0 F)
1954-19.0 C (-2.2 F)
1955-24.1 C (-11.4 F)
1956-25.0 C (-13.0 F)
1957-16.0 C (3.2 F)
1958-21.5 C (-6.7 F)
1959-17.5 C (0.5 F)
1960-18.6 C (-1.5 F)
1961-16.7 C (1.9 F)
1962-26.9 C (-16.4 F)
1963-30.1 C (-22.2 F)
1964-19.7 C (-3.5 F)
1965-22.0 C (-7.6 F)
1966-37.0 C (-34.6 F)
1967-19.0 C (-2.2 F)
1968-22.2 C (-8.0 F)
1969-25.4 C (-13.7 F)
1970-30.9 C (-23.6 F)
1971-19.6 C (-3.3 F)
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980-16.7 C (1.9 F)
1981n/a
1982-2.4 C (27.7 F)
1983-17.5 C (0.5 F)
1984-20.0 C (-4.0 F)
1985-7.0 C (19.4 F)
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Lanna by year The wettest day of the year at Lanna, 1945 to 2026. The record is 76.1 mm (3.0 in) in 2014, marked on the chart; the median year is 30.0 mm (1.2 in). 0204060801960198020002020Record: 76.1 mm (3.0 in) in 2014
The wettest day of the year at Lanna, 1945 to 2026. The record is 76.1 mm (3.0 in) in 2014, marked on the chart; the median year is 30.0 mm (1.2 in).
Wettest day (Rx1day) at Lanna by year
YearWettest day (Rx1day)
194549.0 mm (1.9 in)
194644.9 mm (1.8 in)
194717.2 mm (0.7 in)
194833.0 mm (1.3 in)
194930.2 mm (1.2 in)
195029.7 mm (1.2 in)
195118.0 mm (0.7 in)
195224.0 mm (0.9 in)
195342.0 mm (1.7 in)
195422.0 mm (0.9 in)
195533.8 mm (1.3 in)
195617.0 mm (0.7 in)
195725.0 mm (1.0 in)
195860.4 mm (2.4 in)
195937.0 mm (1.5 in)
196032.3 mm (1.3 in)
196121.1 mm (0.8 in)
196220.7 mm (0.8 in)
196333.0 mm (1.3 in)
196430.0 mm (1.2 in)
196531.0 mm (1.2 in)
196630.7 mm (1.2 in)
196739.6 mm (1.6 in)
196830.0 mm (1.2 in)
196922.3 mm (0.9 in)
197020.0 mm (0.8 in)
197139.0 mm (1.5 in)
197228.8 mm (1.1 in)
197318.9 mm (0.7 in)
197426.0 mm (1.0 in)
197519.0 mm (0.7 in)
197629.0 mm (1.1 in)
197726.5 mm (1.0 in)
197829.7 mm (1.2 in)
197942.9 mm (1.7 in)
198039.5 mm (1.6 in)
198133.4 mm (1.3 in)
198221.4 mm (0.8 in)
198330.0 mm (1.2 in)
198429.9 mm (1.2 in)
198524.0 mm (0.9 in)
198619.6 mm (0.8 in)
198756.9 mm (2.2 in)
198838.8 mm (1.5 in)
198919.1 mm (0.8 in)
199027.2 mm (1.1 in)
199139.1 mm (1.5 in)
199220.5 mm (0.8 in)
199332.9 mm (1.3 in)
199419.6 mm (0.8 in)
199537.0 mm (1.5 in)
199637.5 mm (1.5 in)
199736.8 mm (1.4 in)
199832.2 mm (1.3 in)
199924.1 mm (0.9 in)
200025.8 mm (1.0 in)
200130.9 mm (1.2 in)
200226.2 mm (1.0 in)
200331.3 mm (1.2 in)
200449.7 mm (2.0 in)
200542.2 mm (1.7 in)
200622.5 mm (0.9 in)
200733.2 mm (1.3 in)
200846.6 mm (1.8 in)
200924.5 mm (1.0 in)
201026.2 mm (1.0 in)
201142.2 mm (1.7 in)
201240.7 mm (1.6 in)
201321.7 mm (0.9 in)
201476.1 mm (3.0 in)
201519.7 mm (0.8 in)
201619.2 mm (0.8 in)
201716.0 mm (0.6 in)
201823.5 mm (0.9 in)
201923.2 mm (0.9 in)
202042.6 mm (1.7 in)
202143.6 mm (1.7 in)
202234.2 mm (1.3 in)
202356.0 mm (2.2 in)
202423.0 mm (0.9 in)
202526.7 mm (1.1 in)
202621.0 mm (0.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lanna by year The wettest five days of the year at Lanna, 1945 to 2026. The record is 106.0 mm (4.2 in) in 2014, marked on the chart; the median year is 50.8 mm (2.0 in). 204060801001201960198020002020Record: 106.0 mm (4.2 in) in 2014
The wettest five days of the year at Lanna, 1945 to 2026. The record is 106.0 mm (4.2 in) in 2014, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest five days (Rx5day) at Lanna by year
YearWettest five days (Rx5day)
194575.6 mm (3.0 in)
194656.7 mm (2.2 in)
194727.3 mm (1.1 in)
194868.0 mm (2.7 in)
194961.0 mm (2.4 in)
195037.0 mm (1.5 in)
195146.7 mm (1.8 in)
195248.0 mm (1.9 in)
195368.1 mm (2.7 in)
195444.4 mm (1.7 in)
195535.4 mm (1.4 in)
195637.6 mm (1.5 in)
195762.1 mm (2.4 in)
195893.1 mm (3.7 in)
195956.6 mm (2.2 in)
196052.8 mm (2.1 in)
196134.4 mm (1.4 in)
196235.4 mm (1.4 in)
196341.0 mm (1.6 in)
196457.2 mm (2.3 in)
196563.4 mm (2.5 in)
196632.9 mm (1.3 in)
196784.9 mm (3.3 in)
196869.3 mm (2.7 in)
196949.9 mm (2.0 in)
197046.0 mm (1.8 in)
197150.8 mm (2.0 in)
197240.6 mm (1.6 in)
197341.3 mm (1.6 in)
197447.4 mm (1.9 in)
197540.3 mm (1.6 in)
197656.1 mm (2.2 in)
197753.2 mm (2.1 in)
197845.4 mm (1.8 in)
197947.0 mm (1.9 in)
198074.8 mm (2.9 in)
198150.9 mm (2.0 in)
198244.1 mm (1.7 in)
198347.7 mm (1.9 in)
198452.8 mm (2.1 in)
198548.1 mm (1.9 in)
198632.9 mm (1.3 in)
198796.3 mm (3.8 in)
198872.8 mm (2.9 in)
198937.4 mm (1.5 in)
199051.9 mm (2.0 in)
199146.8 mm (1.8 in)
199241.7 mm (1.6 in)
199358.5 mm (2.3 in)
199444.0 mm (1.7 in)
199557.9 mm (2.3 in)
199668.5 mm (2.7 in)
199758.4 mm (2.3 in)
199863.3 mm (2.5 in)
199942.8 mm (1.7 in)
200041.1 mm (1.6 in)
200167.0 mm (2.6 in)
200251.9 mm (2.0 in)
200357.8 mm (2.3 in)
200471.5 mm (2.8 in)
200570.6 mm (2.8 in)
200646.6 mm (1.8 in)
200748.5 mm (1.9 in)
200863.6 mm (2.5 in)
200953.5 mm (2.1 in)
201061.7 mm (2.4 in)
201181.5 mm (3.2 in)
201267.7 mm (2.7 in)
201347.2 mm (1.9 in)
2014106.0 mm (4.2 in)
201540.6 mm (1.6 in)
201634.8 mm (1.4 in)
201736.3 mm (1.4 in)
201829.7 mm (1.2 in)
201940.5 mm (1.6 in)
202052.8 mm (2.1 in)
202189.4 mm (3.5 in)
202236.9 mm (1.5 in)
202375.4 mm (3.0 in)
202455.5 mm (2.2 in)
202538.6 mm (1.5 in)
202627.5 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lanna by year The longest dry spell of the year at Lanna, 1945 to 2026. The record is 61 days in 1974, marked on the chart; the median year is 23 days. 0204060801960198020002020Record: 61 days in 1974
The longest dry spell of the year at Lanna, 1945 to 2026. The record is 61 days in 1974, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Lanna by year
YearLongest dry spell (CDD)
194516 days
194620 days
194738 days
194824 days
194922 days
195020 days
195124 days
195223 days
195331 days
195414 days
195524 days
195640 days
195717 days
195830 days
195927 days
196027 days
196119 days
196220 days
196322 days
196439 days
196524 days
196618 days
196715 days
196819 days
196923 days
197016 days
197120 days
197222 days
197319 days
197461 days
197536 days
197625 days
197722 days
197819 days
197918 days
198023 days
198122 days
198236 days
198326 days
198422 days
198521 days
198627 days
198732 days
198830 days
198922 days
199025 days
199129 days
199229 days
199326 days
199418 days
199529 days
199630 days
199718 days
199820 days
199920 days
200019 days
200115 days
200221 days
200328 days
200426 days
200523 days
200621 days
200721 days
200824 days
200925 days
201020 days
201128 days
201228 days
201328 days
201417 days
201541 days
201622 days
201719 days
201826 days
201940 days
202024 days
202121 days
202240 days
202330 days
202423 days
202536 days
202621 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

24 years with a frost

Across 24 years with a frost, the median last spring frost at Lanna falls on 10 May and the median first autumn frost on 26 September, which leaves a median of 140 days between them.

Frost dates and growing season at Lanna
MeasureMedian, all yearsEarliest periodRecent period (1948 to 1971)Recent against earliestFitted trend
Last spring frost10 Mayn/a10 Mayn/an/a
First autumn frost26 Septembern/a26 Septembern/an/a
Growing days140 daysn/a140 daysn/an/a

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

81 years, 1945 to 2025

A day with at least 29.2 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.1 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Lanna: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years29.2 mm (1.1 in)
5 years39.0 mm (1.5 in)
10 years45.8 mm (1.8 in)
25 years54.8 mm (2.2 in)
50 years61.8 mm (2.4 in)
100 years69.1 mm (2.7 in)Longer than the 81 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, 81 years of values from 1945 to 2025.

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: 76.1 mm (3.0 in) in 2014; 60.4 mm (2.4 in) in 1958; 56.9 mm (2.2 in) in 1987.

Download the Data

  • Data for Lanna standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lanna 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). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-12).