Built 2026-10-18 (18 October 2026)

Dalton Weather Records (USC00471970)

Record envelope, standing records and threshold days for Dalton (USC00471970), Wisconsin, United States, with 64 years of record.

Key Facts for Dalton

  • Dalton (USC00471970) is a weather station in Wisconsin, United States at 43.66 latitude and -89.20 longitude, 262 m (860 ft) above sea level.
  • The station reports from 1944 to 2007, 64 years of record.
  • 1,464 records set at Dalton still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Dalton tied a daily record high maximum temperature of 28.3 C (82.9 F) on 25 September 2007.

About the Station

  • Location: Wisconsin, United States, 43.66 latitude, -89.20 longitude.
  • Elevation: 262 m (860 ft).
  • Period of record: 1944 to 2007, 64 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Dalton, with 2026 drawn through them The band shows the record high and record low for each calendar day at Dalton. 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 Dalton. 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 Dalton, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan13.9 C (57.0 F)-39.4 C (-38.9 F)n/an/a
Feb17.2 C (63.0 F)-36.7 C (-34.1 F)n/an/a
Mar28.3 C (82.9 F)-32.8 C (-27.0 F)n/an/a
Apr32.8 C (91.0 F)-17.2 C (1.0 F)n/an/a
May36.1 C (97.0 F)-5.6 C (21.9 F)n/an/a
Jun38.9 C (102.0 F)-1.1 C (30.0 F)n/an/a
Jul40.0 C (104.0 F)1.7 C (35.1 F)n/an/a
Aug39.4 C (102.9 F)0.6 C (33.1 F)n/an/a
Sep37.2 C (99.0 F)-6.7 C (19.9 F)n/an/a
Oct32.8 C (91.0 F)-11.7 C (10.9 F)n/an/a
Nov24.4 C (75.9 F)-25.6 C (-14.1 F)n/an/a
Dec18.3 C (64.9 F)-33.3 C (-27.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Dalton by the year they were set 1,464 records at Dalton still stand. 1947 holds the most, with 41. 02040601944: 31945: 251946: 221947: 411948: 311949: 281950: 361951: 341952: 241953: 311954: 171955: 311956: 241957: 131958: 231959: 261960: 171961: 111962: 301963: 311964: 301965: 341966: 221967: 301968: 281969: 211970: 181971: 171972: 251973: 211974: 301975: 241976: 211977: 321978: 91979: 221980: 111981: 191982: 211983: 291984: 171985: 231986: 221987: 181988: 321989: 281990: 241991: 261992: 181993: 51994: 231995: 181996: 191997: 101998: 281999: 172000: 252001: 192002: 272003: 192004: 92005: 212006: 222007: 321944195119581965197219791986199320002007
1,464 records at Dalton still stand. 1947 holds the most, with 41.
Standing records at Dalton by the year they were set
Year setStanding records
19443
194525
194622
194741
194831
194928
195036
195134
195224
195331
195417
195531
195624
195713
195823
195926
196017
196111
196230
196331
196430
196534
196622
196730
196828
196921
197018
197117
197225
197321
197430
197524
197621
197732
19789
197922
198011
198119
198221
198329
198417
198523
198622
198718
198832
198928
199024
199126
199218
19935
199423
199518
199619
199710
199828
199917
200025
200119
200227
200319
20049
200521
200622
200732

All-Time Record Progression

6 new records
When Dalton set new all-time records 6 all-time records were set at Dalton between 25 July 1985 and 7 July 2007. Each dot is a new record. Record daily precipitationRecord daily snowfallRecord high minimum temperatureRecord high maximum temperature25 July 1985: Record daily precipitation 113.5 mm (4.5 in)9 November 1985: Record daily snowfall 35.6 cm (14.0 in)30 May 1989: Record daily precipitation 119.1 mm (4.7 in)4 July 1990: Record high minimum temperature 26.1 C (79.0 F)2 January 1999: Record daily snowfall 53.3 cm (21.0 in)7 July 2007: Record high maximum temperature 40.0 C (104.0 F)19851990199520002005
6 all-time records were set at Dalton between 25 July 1985 and 7 July 2007. Each dot is a new record.
When Dalton set new all-time records
DateKindDetail
1985-07-25Record daily precipitationRecord daily precipitation 113.5 mm (4.5 in)
1985-11-09Record daily snowfallRecord daily snowfall 35.6 cm (14.0 in)
1989-05-30Record daily precipitationRecord daily precipitation 119.1 mm (4.7 in)
1990-07-04Record high minimum temperatureRecord high minimum temperature 26.1 C (79.0 F)
1999-01-02Record daily snowfallRecord daily snowfall 53.3 cm (21.0 in)
2007-07-07Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)

Wettest Day of Each Month

May: 119.1 mm (4.7 in)
Record daily precipitation for each month at Dalton The wettest day on record for each calendar month at Dalton. The most was 119.1 mm (4.7 in) on 30 May 1989. 050100150 Jan: 83.8 mm (3.3 in), 14 January 2002 Jan Feb: 44.2 mm (1.7 in), 22 February 1981 Feb Mar: 67.1 mm (2.6 in), 31 March 1998 Mar Apr: 70.9 mm (2.8 in), 24 April 1955 Apr May: 119.1 mm (4.7 in), 30 May 1989 May Jun: 71.4 mm (2.8 in), 12 June 2001 Jun Jul: 118.9 mm (4.7 in), 21 July 1991 Jul Aug: 78.7 mm (3.1 in), 10 August 1979 Aug Sep: 106.2 mm (4.2 in), 22 September 1988 Sep Oct: 88.4 mm (3.5 in), 3 October 2006 Oct Nov: 68.1 mm (2.7 in), 15 November 1956 Nov Dec: 31.5 mm (1.2 in), 27 December 1946 Dec
The wettest day on record for each calendar month at Dalton. The most was 119.1 mm (4.7 in) on 30 May 1989.
Record daily precipitation for each month at Dalton
MonthRecord daily precipitation (mm)Date
Jan83.8 mm (3.3 in)14 January 2002
Feb44.2 mm (1.7 in)22 February 1981
Mar67.1 mm (2.6 in)31 March 1998
Apr70.9 mm (2.8 in)24 April 1955
May119.1 mm (4.7 in)30 May 1989
Jun71.4 mm (2.8 in)12 June 2001
Jul118.9 mm (4.7 in)21 July 1991
Aug78.7 mm (3.1 in)10 August 1979
Sep106.2 mm (4.2 in)22 September 1988
Oct88.4 mm (3.5 in)3 October 2006
Nov68.1 mm (2.7 in)15 November 1956
Dec31.5 mm (1.2 in)27 December 1946

Period of Record Coverage

1944 to 2007
Days with data per year at Dalton 64 years of record at Dalton, 1944 to 2007. 7 years have data for under 90 percent of days and are left out of rankings: 1944, 1959, 1960, 1961, 2003, 2004, 2007. 1944: 129 of 366 days1945: 364 of 365 days1946: 362 of 365 days1947: 362 of 365 days1948: 362 of 366 days1949: 365 of 365 days1950: 364 of 365 days1951: 365 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 364 of 365 days1955: 349 of 365 days1956: 352 of 366 days1957: 332 of 365 days1958: 343 of 365 days1959: 328 of 365 days1960: 313 of 366 days1961: 266 of 365 days1962: 363 of 365 days1963: 358 of 365 days1964: 361 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 364 of 365 days1968: 365 of 366 days1969: 365 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 362 of 365 days1974: 363 of 365 days1975: 348 of 365 days1976: 363 of 366 days1977: 359 of 365 days1978: 359 of 365 days1979: 360 of 365 days1980: 364 of 366 days1981: 363 of 365 days1982: 364 of 365 days1983: 364 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 365 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 363 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 363 of 365 days1999: 362 of 365 days2000: 346 of 366 days2001: 331 of 365 days2002: 358 of 365 days2003: 312 of 365 days2004: 261 of 366 days2005: 345 of 365 days2006: 342 of 365 days2007: 274 of 365 days195019601970198019902000
64 years of record at Dalton, 1944 to 2007. 7 years have data for under 90 percent of days and are left out of rankings: 1944, 1959, 1960, 1961, 2003, 2004, 2007.
Days with data per year at Dalton
YearDays with dataShare of yearComplete
194412935%No
1945364100%Yes
194636299%Yes
194736299%Yes
194836299%Yes
1949365100%Yes
1950364100%Yes
1951365100%Yes
1952365100%Yes
1953365100%Yes
1954364100%Yes
195534996%Yes
195635296%Yes
195733291%Yes
195834394%Yes
195932890%No
196031386%No
196126673%No
196236399%Yes
196335898%Yes
196436199%Yes
1965364100%Yes
1966364100%Yes
1967364100%Yes
1968365100%Yes
1969365100%Yes
1970364100%Yes
1971364100%Yes
1972365100%Yes
197336299%Yes
197436399%Yes
197534895%Yes
197636399%Yes
197735998%Yes
197835998%Yes
197936099%Yes
198036499%Yes
198136399%Yes
1982364100%Yes
1983364100%Yes
1984365100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988365100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
199336399%Yes
1994365100%Yes
1995364100%Yes
1996366100%Yes
1997365100%Yes
199836399%Yes
199936299%Yes
200034695%Yes
200133191%Yes
200235898%Yes
200331285%No
200426171%No
200534595%Yes
200634294%Yes
200727475%No

Latest Records

20
Latest records at Dalton
DateStationRecordValueBeat old record byOld record stoodSignificance
25 September 2007Dalton, USdaily high max (Tie)28.3 C (82.9 F)tie20 years3 of 100 (Routine)
24 September 2007Dalton, USdaily high max31.1 C (88.0 F)1.7 C (3.1 F)22 years15 of 100 (Routine)
21 September 2007Dalton, USdaily high max28.9 C (84.0 F)0.6 C (1.1 F)1 year7 of 100 (Routine)
12 September 2007Dalton, USdaily low min-2.8 C (27.0 F)1.1 C (2.0 F)52 years23 of 100 (Routine)
11 September 2007Dalton, USdaily low min (Tie)-1.1 C (30.0 F)tie48 years5 of 100 (Routine)
6 September 2007Dalton, USmonthly high min (Tie)22.2 C (72.0 F)tie36 years6 of 100 (Routine)
26 August 2007Dalton, USdaily low min5.6 C (42.1 F)0.5 C (0.9 F)42 years19 of 100 (Routine)
19 August 2007Dalton, USdaily rain74.9 mm (2.9 in)22.8 mm (0.9 in)12 years27 of 100 (Routine)
19 August 2007Dalton, USdaily low max18.3 C (64.9 F)0.6 C (1.1 F)56 years23 of 100 (Routine)
19 August 2007Dalton, USdaily low min (Tie)6.7 C (44.1 F)tie50 years5 of 100 (Routine)
12 August 2007Dalton, USdaily low min5.6 C (42.1 F)1.1 C (2.0 F)40 years20 of 100 (Routine)
7 August 2007Dalton, USdaily rain73.7 mm (2.9 in)10.2 mm (0.4 in)26 years22 of 100 (Routine)
27 July 2007Dalton, USdaily rain31.8 mm (1.3 in)17.6 mm (0.7 in)24 years26 of 100 (Routine)
21 July 2007Dalton, USdaily low min5.0 C (41.0 F)1.7 C (3.1 F)36 years21 of 100 (Routine)
20 July 2007Dalton, USdaily low min3.3 C (37.9 F)3.9 C (7.0 F)40 years28 of 100 (Routine)
13 July 2007Dalton, USmonthly low min1.7 C (35.1 F)2.7 C (4.9 F)42 years35 of 100 (Notable)
11 July 2007Dalton, USdaily low min5.0 C (41.0 F)0.6 C (1.1 F)61 years25 of 100 (Routine)
9 July 2007Dalton, USdaily high max (Tie)35.6 C (96.1 F)tie5 years1 of 100 (Routine)
7 July 2007Dalton, USall-time high max40.0 C (104.0 F)0.6 C (1.1 F)58 years44 of 100 (Notable)
2 July 2007Dalton, USmonthly low min (Tie)4.4 C (39.9 F)tie41 years7 of 100 (Routine)

Climate Trend

53 complete years, 1945 to 2006
Annual mean temperature at Dalton as warming stripes, 1945 to 2006 One stripe for each of 53 complete years at Dalton, 1945 to 2006. Blue stripes are years cooler than the station's own mean of 7.8 C (46.0 F); red stripes are warmer. The coolest year was 1951, at 6.1 C (43.1 F), and the warmest was 1998, at 10.3 C (50.5 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1945: 7.1 C, -0.7 C from the station mean1946: 8.8 C, +1.1 C from the station mean1947: 8.0 C, +0.2 C from the station mean1948: 8.2 C, +0.4 C from the station mean1949: 8.4 C, +0.7 C from the station mean1950: 6.3 C, -1.5 C from the station mean1951: 6.1 C, -1.6 C from the station mean1952: 7.9 C, +0.2 C from the station mean1953: 8.8 C, +1.0 C from the station mean1954: 8.1 C, +0.3 C from the station mean1955: 8.1 C, +0.3 C from the station mean1956: 7.4 C, -0.4 C from the station mean1958: 7.2 C, -0.6 C from the station mean1962: 7.0 C, -0.8 C from the station mean1963: 6.9 C, -0.8 C from the station mean1964: 8.3 C, +0.5 C from the station mean1965: 7.1 C, -0.7 C from the station mean1966: 6.9 C, -0.9 C from the station mean1967: 6.8 C, -1.0 C from the station mean1968: 8.1 C, +0.3 C from the station mean1969: 7.0 C, -0.8 C from the station mean1970: 7.5 C, -0.3 C from the station mean1971: 7.5 C, -0.3 C from the station mean1972: 6.3 C, -1.4 C from the station mean1973: 8.6 C, +0.8 C from the station mean1974: 7.4 C, -0.4 C from the station mean1976: 7.0 C, -0.8 C from the station mean1977: 7.8 C, 0.0 C from the station mean1978: 6.7 C, -1.0 C from the station mean1979: 6.6 C, -1.2 C from the station mean1980: 7.5 C, -0.3 C from the station mean1981: 8.2 C, +0.4 C from the station mean1982: 7.2 C, -0.6 C from the station mean1983: 8.0 C, +0.3 C from the station mean1984: 8.1 C, +0.3 C from the station mean1985: 7.2 C, -0.6 C from the station mean1986: 8.1 C, +0.3 C from the station mean1987: 9.5 C, +1.7 C from the station mean1988: 8.2 C, +0.4 C from the station mean1989: 7.0 C, -0.8 C from the station mean1990: 8.9 C, +1.1 C from the station mean1991: 8.5 C, +0.7 C from the station mean1992: 7.8 C, 0.0 C from the station mean1993: 7.4 C, -0.4 C from the station mean1994: 8.1 C, +0.4 C from the station mean1995: 8.1 C, +0.3 C from the station mean1996: 7.0 C, -0.8 C from the station mean1997: 7.8 C, +0.1 C from the station mean1998: 10.3 C, +2.5 C from the station mean1999: 9.3 C, +1.5 C from the station mean2002: 9.3 C, +1.5 C from the station mean2005: 8.8 C, +1.0 C from the station mean2006: 8.2 C, +0.4 C from the station mean1945195019601970198019902000
One stripe for each of 53 complete years at Dalton, 1945 to 2006. Blue stripes are years cooler than the station's own mean of 7.8 C (46.0 F); red stripes are warmer. The coolest year was 1951, at 6.1 C (43.1 F), and the warmest was 1998, at 10.3 C (50.5 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Dalton as warming stripes, 1945 to 2006
YearAnnual mean temperatureDifference from the station mean
19457.1 C-0.67 C
19468.8 C+1.05 C
19478.0 C+0.19 C
19488.2 C+0.44 C
19498.4 C+0.66 C
19506.3 C-1.51 C
19516.1 C-1.64 C
19527.9 C+0.16 C
19538.8 C+1.01 C
19548.1 C+0.34 C
19558.1 C+0.28 C
19567.4 C-0.39 C
19587.2 C-0.58 C
19627.0 C-0.82 C
19636.9 C-0.84 C
19648.3 C+0.47 C
19657.1 C-0.68 C
19666.9 C-0.86 C
19676.8 C-1.00 C
19688.1 C+0.33 C
19697.0 C-0.80 C
19707.5 C-0.26 C
19717.5 C-0.31 C
19726.3 C-1.44 C
19738.6 C+0.84 C
19747.4 C-0.40 C
19767.0 C-0.77 C
19777.8 C+0.03 C
19786.7 C-1.05 C
19796.6 C-1.18 C
19807.5 C-0.32 C
19818.2 C+0.42 C
19827.2 C-0.60 C
19838.0 C+0.25 C
19848.1 C+0.32 C
19857.2 C-0.57 C
19868.1 C+0.31 C
19879.5 C+1.74 C
19888.2 C+0.38 C
19897.0 C-0.79 C
19908.9 C+1.12 C
19918.5 C+0.74 C
19927.8 C+0.00 C
19937.4 C-0.39 C
19948.1 C+0.36 C
19958.1 C+0.31 C
19967.0 C-0.79 C
19977.8 C+0.06 C
199810.3 C+2.49 C
19999.3 C+1.49 C
20029.3 C+1.47 C
20058.8 C+0.98 C
20068.2 C+0.38 C

The annual mean temperature here has risen by 0.16 C (0.03 to 0.29) per decade over 1945 to 2006. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 53 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Dalton
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.16 C (0.03 to 0.29) per decade0.3 F (0.1 to 0.5) per decade1945 to 200653Rise
Mean daily maximum0.14 C (-0.01 to 0.28) per decade0.24 F (-0.02 to 0.51) per decade1945 to 200653Not clearly different from zero
Mean daily minimum0.19 C (0.05 to 0.32) per decade0.3 F (0.1 to 0.6) per decade1945 to 200653Rise

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

1944 to 2007
Yearly extremes at Dalton: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)200734.7 C (94.5 F)64
Coldest night (TNn)-39.4 C (-38.9 F)1951-27.8 C (-18.0 F)64
Wettest day (Rx1day)119.1 mm (4.7 in)198961.3 mm (2.4 in)64
Wettest five days (Rx5day)196.1 mm (7.7 in)196592.0 mm (3.6 in)64
Longest dry spell (CDD)46 days196123 days64

Hottest day (TXx)

Hottest day (TXx) at Dalton by year The hottest day of the year at Dalton, 1944 to 2007. The record is 40.0 C (104.0 F) in 2007, marked on the chart; the median year is 34.7 C (94.5 F). 3032.53537.540196019802000Record: 40.0 C (104.0 F) in 2007
The hottest day of the year at Dalton, 1944 to 2007. The record is 40.0 C (104.0 F) in 2007, marked on the chart; the median year is 34.7 C (94.5 F).
Hottest day (TXx) at Dalton by year
YearHottest day (TXx)
194430.6 C (87.1 F)
194535.6 C (96.1 F)
194636.1 C (97.0 F)
194738.3 C (100.9 F)
194839.4 C (102.9 F)
194935.0 C (95.0 F)
195033.3 C (91.9 F)
195131.1 C (88.0 F)
195234.4 C (93.9 F)
195336.7 C (98.1 F)
195434.4 C (93.9 F)
195538.9 C (102.0 F)
195635.6 C (96.1 F)
195733.9 C (93.0 F)
195835.6 C (96.1 F)
195933.9 C (93.0 F)
196033.9 C (93.0 F)
196135.0 C (95.0 F)
196233.9 C (93.0 F)
196337.2 C (99.0 F)
196437.2 C (99.0 F)
196534.4 C (93.9 F)
196635.6 C (96.1 F)
196732.8 C (91.0 F)
196834.4 C (93.9 F)
196933.3 C (91.9 F)
197033.9 C (93.0 F)
197133.9 C (93.0 F)
197234.4 C (93.9 F)
197335.0 C (95.0 F)
197434.4 C (93.9 F)
197533.9 C (93.0 F)
197636.1 C (97.0 F)
197736.7 C (98.1 F)
197835.0 C (95.0 F)
197931.7 C (89.1 F)
198036.1 C (97.0 F)
198133.9 C (93.0 F)
198233.9 C (93.0 F)
198335.6 C (96.1 F)
198435.6 C (96.1 F)
198534.4 C (93.9 F)
198634.4 C (93.9 F)
198737.8 C (100.0 F)
198839.4 C (102.9 F)
198934.4 C (93.9 F)
199033.9 C (93.0 F)
199135.6 C (96.1 F)
199233.9 C (93.0 F)
199331.7 C (89.1 F)
199437.2 C (99.0 F)
199539.4 C (102.9 F)
199634.4 C (93.9 F)
199733.3 C (91.9 F)
199833.9 C (93.0 F)
199936.7 C (98.1 F)
200033.3 C (91.9 F)
200137.2 C (99.0 F)
200237.2 C (99.0 F)
200337.2 C (99.0 F)
200432.2 C (90.0 F)
200537.2 C (99.0 F)
200635.0 C (95.0 F)
200740.0 C (104.0 F)

Coldest night (TNn)

Coldest night (TNn) at Dalton by year The coldest night of the year at Dalton, 1944 to 2007. The record is -39.4 C (-38.9 F) in 1951, marked on the chart; the median year is -27.8 C (-18.0 F). -40-35-30-25-20-15196019802000Record: -39.4 C (-38.9 F) in 1951
The coldest night of the year at Dalton, 1944 to 2007. The record is -39.4 C (-38.9 F) in 1951, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Dalton by year
YearColdest night (TNn)
1944-26.1 C (-15.0 F)
1945-27.8 C (-18.0 F)
1946-26.7 C (-16.1 F)
1947-27.2 C (-17.0 F)
1948-30.6 C (-23.1 F)
1949-28.3 C (-18.9 F)
1950-28.9 C (-20.0 F)
1951-39.4 C (-38.9 F)
1952-27.8 C (-18.0 F)
1953-25.0 C (-13.0 F)
1954-28.9 C (-20.0 F)
1955-26.1 C (-15.0 F)
1956-27.8 C (-18.0 F)
1957-26.1 C (-15.0 F)
1958-27.2 C (-17.0 F)
1959-30.0 C (-22.0 F)
1960-25.0 C (-13.0 F)
1961-28.3 C (-18.9 F)
1962-32.8 C (-27.0 F)
1963-35.6 C (-32.1 F)
1964-23.9 C (-11.0 F)
1965-30.0 C (-22.0 F)
1966-31.7 C (-25.1 F)
1967-32.2 C (-26.0 F)
1968-28.9 C (-20.0 F)
1969-26.7 C (-16.1 F)
1970-30.6 C (-23.1 F)
1971-28.9 C (-20.0 F)
1972-33.3 C (-27.9 F)
1973-25.6 C (-14.1 F)
1974-28.3 C (-18.9 F)
1975-26.7 C (-16.1 F)
1976-28.9 C (-20.0 F)
1977-33.3 C (-27.9 F)
1978-25.0 C (-13.0 F)
1979-31.7 C (-25.1 F)
1980-26.7 C (-16.1 F)
1981-26.1 C (-15.0 F)
1982-33.3 C (-27.9 F)
1983-33.3 C (-27.9 F)
1984-30.0 C (-22.0 F)
1985-33.3 C (-27.9 F)
1986-27.2 C (-17.0 F)
1987-26.7 C (-16.1 F)
1988-28.3 C (-18.9 F)
1989-30.0 C (-22.0 F)
1990-28.3 C (-18.9 F)
1991-27.2 C (-17.0 F)
1992-25.6 C (-14.1 F)
1993-26.7 C (-16.1 F)
1994-33.9 C (-29.0 F)
1995-23.3 C (-9.9 F)
1996-36.7 C (-34.1 F)
1997-26.1 C (-15.0 F)
1998-25.6 C (-14.1 F)
1999-29.4 C (-20.9 F)
2000-23.9 C (-11.0 F)
2001-22.2 C (-8.0 F)
2002-25.6 C (-14.1 F)
2003-23.9 C (-11.0 F)
2004-26.7 C (-16.1 F)
2005-23.3 C (-9.9 F)
2006-19.4 C (-2.9 F)
2007-30.0 C (-22.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Dalton by year The wettest day of the year at Dalton, 1944 to 2007. The record is 119.1 mm (4.7 in) in 1989, marked on the chart; the median year is 61.3 mm (2.4 in). 255075100125196019802000Record: 119.1 mm (4.7 in) in 1989
The wettest day of the year at Dalton, 1944 to 2007. The record is 119.1 mm (4.7 in) in 1989, marked on the chart; the median year is 61.3 mm (2.4 in).
Wettest day (Rx1day) at Dalton by year
YearWettest day (Rx1day)
194465.5 mm (2.6 in)
194548.3 mm (1.9 in)
194646.5 mm (1.8 in)
194759.2 mm (2.3 in)
194829.5 mm (1.2 in)
194934.3 mm (1.4 in)
195076.5 mm (3.0 in)
195146.0 mm (1.8 in)
195256.4 mm (2.2 in)
195345.7 mm (1.8 in)
195476.2 mm (3.0 in)
195570.9 mm (2.8 in)
195668.1 mm (2.7 in)
195739.4 mm (1.6 in)
195827.9 mm (1.1 in)
195965.0 mm (2.6 in)
196063.5 mm (2.5 in)
196192.7 mm (3.6 in)
196263.0 mm (2.5 in)
196336.1 mm (1.4 in)
196439.1 mm (1.5 in)
196573.7 mm (2.9 in)
196640.4 mm (1.6 in)
196754.9 mm (2.2 in)
196844.5 mm (1.8 in)
196947.5 mm (1.9 in)
197046.5 mm (1.8 in)
197151.6 mm (2.0 in)
197262.2 mm (2.4 in)
197365.5 mm (2.6 in)
197457.4 mm (2.3 in)
197543.4 mm (1.7 in)
197637.6 mm (1.5 in)
197741.4 mm (1.6 in)
197879.2 mm (3.1 in)
197978.7 mm (3.1 in)
198075.2 mm (3.0 in)
198144.2 mm (1.7 in)
198250.3 mm (2.0 in)
198340.9 mm (1.6 in)
198459.4 mm (2.3 in)
1985113.5 mm (4.5 in)
198677.0 mm (3.0 in)
198766.8 mm (2.6 in)
1988106.2 mm (4.2 in)
1989119.1 mm (4.7 in)
199066.3 mm (2.6 in)
1991118.9 mm (4.7 in)
199273.2 mm (2.9 in)
199347.5 mm (1.9 in)
199456.4 mm (2.2 in)
199558.7 mm (2.3 in)
199664.5 mm (2.5 in)
199754.9 mm (2.2 in)
199867.1 mm (2.6 in)
1999112.3 mm (4.4 in)
200060.5 mm (2.4 in)
200171.4 mm (2.8 in)
200283.8 mm (3.3 in)
200362.0 mm (2.4 in)
200446.0 mm (1.8 in)
200568.1 mm (2.7 in)
200688.4 mm (3.5 in)
200774.9 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Dalton by year The wettest five days of the year at Dalton, 1944 to 2007. The record is 196.1 mm (7.7 in) in 1965, marked on the chart; the median year is 92.0 mm (3.6 in). 050100150200196019802000Record: 196.1 mm (7.7 in) in 1965
The wettest five days of the year at Dalton, 1944 to 2007. The record is 196.1 mm (7.7 in) in 1965, marked on the chart; the median year is 92.0 mm (3.6 in).
Wettest five days (Rx5day) at Dalton by year
YearWettest five days (Rx5day)
194471.1 mm (2.8 in)
194566.5 mm (2.6 in)
194668.6 mm (2.7 in)
194765.8 mm (2.6 in)
194857.2 mm (2.3 in)
194972.6 mm (2.9 in)
1950131.1 mm (5.2 in)
195172.2 mm (2.8 in)
195259.4 mm (2.3 in)
1953139.2 mm (5.5 in)
1954141.6 mm (5.6 in)
195571.4 mm (2.8 in)
195683.8 mm (3.3 in)
195765.6 mm (2.6 in)
195846.5 mm (1.8 in)
1959112.5 mm (4.4 in)
196091.7 mm (3.6 in)
1961132.8 mm (5.2 in)
196263.3 mm (2.5 in)
196350.0 mm (2.0 in)
196444.0 mm (1.7 in)
1965196.1 mm (7.7 in)
196661.5 mm (2.4 in)
196767.7 mm (2.7 in)
196893.8 mm (3.7 in)
1969123.2 mm (4.9 in)
197073.9 mm (2.9 in)
197158.2 mm (2.3 in)
197279.1 mm (3.1 in)
197392.2 mm (3.6 in)
197475.4 mm (3.0 in)
197551.8 mm (2.0 in)
197660.2 mm (2.4 in)
197768.9 mm (2.7 in)
1978111.0 mm (4.4 in)
197993.0 mm (3.7 in)
1980142.0 mm (5.6 in)
198170.9 mm (2.8 in)
198277.7 mm (3.1 in)
198369.8 mm (2.7 in)
198493.8 mm (3.7 in)
1985113.5 mm (4.5 in)
1986115.3 mm (4.5 in)
1987125.2 mm (4.9 in)
1988137.0 mm (5.4 in)
1989126.7 mm (5.0 in)
199098.5 mm (3.9 in)
1991139.7 mm (5.5 in)
1992181.0 mm (7.1 in)
199386.3 mm (3.4 in)
1994100.1 mm (3.9 in)
199577.2 mm (3.0 in)
1996167.1 mm (6.6 in)
199765.6 mm (2.6 in)
199894.9 mm (3.7 in)
1999152.2 mm (6.0 in)
200085.4 mm (3.4 in)
2001117.3 mm (4.6 in)
200293.7 mm (3.7 in)
2003125.2 mm (4.9 in)
2004140.8 mm (5.5 in)
2005114.1 mm (4.5 in)
2006103.9 mm (4.1 in)
2007116.3 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Dalton by year The longest dry spell of the year at Dalton, 1944 to 2007. The record is 46 days in 1961, marked on the chart; the median year is 23 days. 1020304050196019802000Record: 46 days in 1961
The longest dry spell of the year at Dalton, 1944 to 2007. The record is 46 days in 1961, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Dalton by year
YearLongest dry spell (CDD)
194425 days
194522 days
194618 days
194726 days
194818 days
194934 days
195030 days
195118 days
195230 days
195330 days
195426 days
195530 days
195619 days
195723 days
195836 days
195927 days
196031 days
196146 days
196229 days
196318 days
196424 days
196516 days
196624 days
196722 days
196840 days
196924 days
197034 days
197123 days
197217 days
197315 days
197414 days
197515 days
197632 days
197718 days
197829 days
197918 days
198028 days
198130 days
198218 days
198315 days
198420 days
198516 days
198623 days
198729 days
198837 days
198927 days
199012 days
199122 days
199221 days
199314 days
199414 days
199528 days
199628 days
199717 days
199831 days
199924 days
200014 days
200123 days
200228 days
200322 days
200414 days
200516 days
200619 days
200726 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

53 years with a frost

Across 53 years with a frost, the median last spring frost at Dalton falls on 13 May and the median first autumn frost on 28 September, which leaves a median of 139 days between them.

Fitted over all years, the growing season changes by +1.0 days per decade at this station.

Frost dates and growing season at Dalton
MeasureMedian, all yearsEarliest periodRecent period (1972 to 2006)Recent against earliestFitted trend
Last spring frost13 Mayn/a12 Mayn/a-0.6 days per decade
First autumn frost28 Septembern/a28 Septembern/a+0.3 days per decade
Growing days139 daysn/a140 daysn/a+1.0 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

57 years, 1945 to 2006

A day with at least 58.7 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 132.8 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Dalton: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.7 mm (2.3 in)
5 years77.7 mm (3.1 in)
10 years90.6 mm (3.6 in)
25 years107.3 mm (4.2 in)
50 years120.0 mm (4.7 in)
100 years132.8 mm (5.2 in)Longer than the 57 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, 57 years of values from 1945 to 2006.

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: 119.1 mm (4.7 in) in 1989; 118.9 mm (4.7 in) in 1991; 113.5 mm (4.5 in) in 1985.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

  • Data for Dalton standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Dalton 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 (2025-12-31).