Built 2026-10-16 (16 October 2026)

Cambridge Water Trmt P Weather Records (USC00181385)

Record envelope, standing records and threshold days for Cambridge Water Trmt P (USC00181385), Maryland, United States, with 99 years of record.

Key Facts for Cambridge Water Trmt P

  • Cambridge Water Trmt P (USC00181385) is a weather station in Maryland, United States at 38.57 latitude and -76.07 longitude, 3 m (10 ft) above sea level.
  • The station reports from 1893 to 1991, 99 years of record.
  • 1,464 records set at Cambridge Water Trmt P still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Cambridge Water Trmt P tied a daily record low minimum temperature of 9.4 C (48.9 F) on 7 June 1991.

About the Station

  • Location: Maryland, United States, 38.57 latitude, -76.07 longitude.
  • Elevation: 3 m (10 ft).
  • Period of record: 1893 to 1991, 99 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 Cambridge Water Trmt P, with 2026 drawn through them The band shows the record high and record low for each calendar day at Cambridge Water Trmt P. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Cambridge Water Trmt P. 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 Cambridge Water Trmt P, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-21.1 C (-6.0 F)n/an/a
Feb28.3 C (82.9 F)-21.1 C (-6.0 F)n/an/a
Mar32.8 C (91.0 F)-13.3 C (8.1 F)n/an/a
Apr33.9 C (93.0 F)-8.3 C (17.1 F)n/an/a
May37.8 C (100.0 F)-0.6 C (30.9 F)n/an/a
Jun38.9 C (102.0 F)2.2 C (36.0 F)n/an/a
Jul41.1 C (106.0 F)8.9 C (48.0 F)n/an/a
Aug40.0 C (104.0 F)5.0 C (41.0 F)n/an/a
Sep38.3 C (100.9 F)1.7 C (35.1 F)n/an/a
Oct34.4 C (93.9 F)-4.4 C (24.1 F)n/an/a
Nov30.0 C (86.0 F)-13.3 C (8.1 F)n/an/a
Dec23.9 C (75.0 F)-18.9 C (-2.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Cambridge Water Trmt P by the year they were set 1,464 records at Cambridge Water Trmt P still stand. 1930 holds the most, with 35. 0102030401893: 281895: 21896: 191899: 151900: 71901: 251902: 101903: 151904: 171905: 141906: 121907: 181908: 151909: 201910: 141911: 211912: 211913: 321914: 301915: 191916: 251917: 231918: 281919: 161920: 141921: 171922: 61923: 91924: 121925: 181926: 91927: 121928: 111929: 231930: 351931: 121932: 221933: 181934: 201935: 181936: 241937: 201938: 101939: 121940: 251941: 191942: 111943: 131946: 151947: 211948: 191949: 71950: 181951: 181952: 71953: 191954: 171955: 71956: 131957: 211958: 161959: 101960: 151961: 181962: 161963: 141964: 181965: 171966: 181967: 151968: 71969: 71970: 141971: 131972: 141973: 101974: 171975: 101976: 211977: 121978: 41979: 151980: 81981: 91982: 81983: 121984: 151985: 131986: 111987: 41988: 161989: 171990: 191991: 131893190619161926193619481958196819781988
1,464 records at Cambridge Water Trmt P still stand. 1930 holds the most, with 35.
Standing records at Cambridge Water Trmt P by the year they were set
Year setStanding records
189328
18952
189619
189915
19007
190125
190210
190315
190417
190514
190612
190718
190815
190920
191014
191121
191221
191332
191430
191519
191625
191723
191828
191916
192014
192117
19226
19239
192412
192518
19269
192712
192811
192923
193035
193112
193222
193318
193420
193518
193624
193720
193810
193912
194025
194119
194211
194313
194615
194721
194819
19497
195018
195118
19527
195319
195417
19557
195613
195721
195816
195910
196015
196118
196216
196314
196418
196517
196618
196715
19687
19697
197014
197113
197214
197310
197417
197510
197621
197712
19784
197915
19808
19819
19828
198312
198415
198513
198611
19874
198816
198917
199019
199113

All-Time Record Progression

7 new records
When Cambridge Water Trmt P set new all-time records 7 all-time records were set at Cambridge Water Trmt P between 21 July 1930 and 21 January 1985. Each dot is a new record. Record high maximum temperatureRecord low minimum temperatureRecord daily precipitationRecord high minimum temperatureRecord low maximum temperatureRecord snow depth21 July 1930: Record high maximum temperature 41.1 C (106.0 F)9 February 1934: Record low minimum temperature -21.1 C (-6.0 F)6 September 1935: Record daily precipitation 261.6 mm (10.3 in)25 June 1943: Record high minimum temperature 31.7 C (89.1 F)9 January 1970: Record low maximum temperature -10.0 C (14.0 F)19 February 1979: Record snow depth 53.3 cm (21.0 in)21 January 1985: Record low maximum temperature -11.1 C (12.0 F)193019401950196019701980
7 all-time records were set at Cambridge Water Trmt P between 21 July 1930 and 21 January 1985. Each dot is a new record.
When Cambridge Water Trmt P set new all-time records
DateKindDetail
1930-07-21Record high maximum temperatureRecord high maximum temperature 41.1 C (106.0 F)
1934-02-09Record low minimum temperatureRecord low minimum temperature -21.1 C (-6.0 F)
1935-09-06Record daily precipitationRecord daily precipitation 261.6 mm (10.3 in)
1943-06-25Record high minimum temperatureRecord high minimum temperature 31.7 C (89.1 F)
1970-01-09Record low maximum temperatureRecord low maximum temperature -10.0 C (14.0 F)
1979-02-19Record snow depthRecord snow depth 53.3 cm (21.0 in)
1985-01-21Record low maximum temperatureRecord low maximum temperature -11.1 C (12.0 F)

Wettest Day of Each Month

Sep: 261.6 mm (10.3 in)
Record daily precipitation for each month at Cambridge Water Trmt P The wettest day on record for each calendar month at Cambridge Water Trmt P. The most was 261.6 mm (10.3 in) on 6 September 1935. 0100200300 Jan: 70.1 mm (2.8 in), 3 January 1936 Jan Feb: 83.6 mm (3.3 in), 17 February 1903 Feb Mar: 85.9 mm (3.4 in), 15 March 1912 Mar Apr: 81.3 mm (3.2 in), 10 April 1918 Apr May: 101.6 mm (4.0 in), 30 May 1984 May Jun: 103.1 mm (4.1 in), 6 June 1970 Jun Jul: 130.0 mm (5.1 in), 31 July 1893 Jul Aug: 153.7 mm (6.1 in), 27 August 1971 Aug Sep: 261.6 mm (10.3 in), 6 September 1935 Sep Oct: 182.6 mm (7.2 in), 19 October 1927 Oct Nov: 85.1 mm (3.4 in), 21 November 1952 Nov Dec: 85.1 mm (3.4 in), 25 December 1986 Dec
The wettest day on record for each calendar month at Cambridge Water Trmt P. The most was 261.6 mm (10.3 in) on 6 September 1935.
Record daily precipitation for each month at Cambridge Water Trmt P
MonthRecord daily precipitation (mm)Date
Jan70.1 mm (2.8 in)3 January 1936
Feb83.6 mm (3.3 in)17 February 1903
Mar85.9 mm (3.4 in)15 March 1912
Apr81.3 mm (3.2 in)10 April 1918
May101.6 mm (4.0 in)30 May 1984
Jun103.1 mm (4.1 in)6 June 1970
Jul130.0 mm (5.1 in)31 July 1893
Aug153.7 mm (6.1 in)27 August 1971
Sep261.6 mm (10.3 in)6 September 1935
Oct182.6 mm (7.2 in)19 October 1927
Nov85.1 mm (3.4 in)21 November 1952
Dec85.1 mm (3.4 in)25 December 1986

Period of Record Coverage

1893 to 1991
Days with data per year at Cambridge Water Trmt P 96 years of record at Cambridge Water Trmt P, 1893 to 1991. 17 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1895, 1896, 1899, 1900, 1901, 1916 and others. 1893: 316 of 365 days1894: 49 of 365 days1895: 88 of 365 days1896: 199 of 366 days1899: 257 of 365 days1900: 161 of 365 days1901: 214 of 365 days1902: 364 of 365 days1903: 363 of 365 days1904: 364 of 366 days1905: 365 of 365 days1906: 365 of 365 days1907: 362 of 365 days1908: 362 of 366 days1909: 360 of 365 days1910: 362 of 365 days1911: 365 of 365 days1912: 342 of 366 days1913: 363 of 365 days1914: 365 of 365 days1915: 363 of 365 days1916: 327 of 366 days1917: 363 of 365 days1918: 331 of 365 days1919: 337 of 365 days1920: 329 of 366 days1921: 319 of 365 days1922: 346 of 365 days1923: 356 of 365 days1924: 362 of 366 days1925: 361 of 365 days1926: 357 of 365 days1927: 306 of 365 days1928: 318 of 366 days1929: 307 of 365 days1930: 361 of 365 days1931: 364 of 365 days1932: 363 of 366 days1933: 365 of 365 days1934: 364 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 359 of 365 days1938: 363 of 365 days1939: 360 of 365 days1940: 364 of 366 days1941: 363 of 365 days1942: 335 of 365 days1943: 260 of 365 days1944: 60 of 366 days1946: 343 of 365 days1947: 364 of 365 days1948: 365 of 366 days1949: 363 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 364 of 366 days1953: 360 of 365 days1954: 359 of 365 days1955: 358 of 365 days1956: 353 of 366 days1957: 362 of 365 days1958: 363 of 365 days1959: 365 of 365 days1960: 353 of 366 days1961: 362 of 365 days1962: 361 of 365 days1963: 364 of 365 days1964: 363 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 365 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 364 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 360 of 365 days1978: 363 of 365 days1979: 365 of 365 days1980: 363 of 366 days1981: 362 of 365 days1982: 323 of 365 days1983: 350 of 365 days1984: 349 of 366 days1985: 352 of 365 days1986: 359 of 365 days1987: 358 of 365 days1988: 357 of 366 days1989: 358 of 365 days1990: 349 of 365 days1991: 162 of 365 days190519201935195019651980
96 years of record at Cambridge Water Trmt P, 1893 to 1991. 17 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1895, 1896, 1899, 1900, 1901, 1916 and others.
Days with data per year at Cambridge Water Trmt P
YearDays with dataShare of yearComplete
189331687%No
18944913%No
18958824%No
189619954%No
189925770%No
190016144%No
190121459%No
1902364100%Yes
190336399%Yes
190436499%Yes
1905365100%Yes
1906365100%Yes
190736299%Yes
190836299%Yes
190936099%Yes
191036299%Yes
1911365100%Yes
191234293%Yes
191336399%Yes
1914365100%Yes
191536399%Yes
191632789%No
191736399%Yes
191833191%Yes
191933792%Yes
192032990%No
192131987%No
192234695%Yes
192335698%Yes
192436299%Yes
192536199%Yes
192635798%Yes
192730684%No
192831887%No
192930784%No
193036199%Yes
1931364100%Yes
193236399%Yes
1933365100%Yes
1934364100%Yes
1935365100%Yes
1936366100%Yes
193735998%Yes
193836399%Yes
193936099%Yes
194036499%Yes
194136399%Yes
194233592%Yes
194326071%No
19446016%No
194634394%Yes
1947364100%Yes
1948365100%Yes
194936399%Yes
1950365100%Yes
1951365100%Yes
195236499%Yes
195336099%Yes
195435998%Yes
195535898%Yes
195635396%Yes
195736299%Yes
195836399%Yes
1959365100%Yes
196035396%Yes
196136299%Yes
196236199%Yes
1963364100%Yes
196436399%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968365100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973364100%Yes
1974364100%Yes
1975365100%Yes
1976366100%Yes
197736099%Yes
197836399%Yes
1979365100%Yes
198036399%Yes
198136299%Yes
198232388%No
198335096%Yes
198434995%Yes
198535296%Yes
198635998%Yes
198735898%Yes
198835798%Yes
198935898%Yes
199034996%Yes
199116244%No

Latest Records

20
Latest records at Cambridge Water Trmt P
DateStationRecordValueBeat old record byOld record stoodSignificance
7 June 1991Cambridge Water Trmt P, USdaily low min (Tie)9.4 C (48.9 F)tie32 years4 of 100 (Routine)
31 May 1991Cambridge Water Trmt P, USdaily high max36.1 C (97.0 F)1.1 C (2.0 F)4 years12 of 100 (Routine)
31 May 1991Cambridge Water Trmt P, USmonthly high min (Tie)23.9 C (75.0 F)tie95 years11 of 100 (Routine)
30 May 1991Cambridge Water Trmt P, USdaily high min21.7 C (71.1 F)0.6 C (1.1 F)85 years35 of 100 (Notable)
30 May 1991Cambridge Water Trmt P, USdaily high max36.7 C (98.1 F)1.7 C (3.1 F)4 years13 of 100 (Routine)
29 May 1991Cambridge Water Trmt P, USdaily high min (Tie)22.2 C (72.0 F)tie49 years5 of 100 (Routine)
28 May 1991Cambridge Water Trmt P, USdaily high min23.3 C (73.9 F)0.5 C (0.9 F)52 years25 of 100 (Routine)
27 May 1991Cambridge Water Trmt P, USdaily high min (Tie)21.7 C (71.1 F)tie49 years5 of 100 (Routine)
26 May 1991Cambridge Water Trmt P, USdaily high min20.6 C (69.1 F)0.6 C (1.1 F)97 years39 of 100 (Notable)
26 May 1991Cambridge Water Trmt P, USdaily high max (Tie)34.4 C (93.9 F)tie76 years8 of 100 (Routine)
25 May 1991Cambridge Water Trmt P, USdaily high max (Tie)34.4 C (93.9 F)tie86 years8 of 100 (Routine)
13 May 1991Cambridge Water Trmt P, USdaily high max (Tie)33.3 C (91.9 F)tie34 years4 of 100 (Routine)
28 April 1991Cambridge Water Trmt P, USdaily high min (Tie)17.2 C (63.0 F)tie56 years6 of 100 (Routine)
10 April 1991Cambridge Water Trmt P, USdaily high min (Tie)13.3 C (55.9 F)tie21 years3 of 100 (Routine)
9 April 1991Cambridge Water Trmt P, USdaily high min18.3 C (64.9 F)1.1 C (2.0 F)61 years29 of 100 (Routine)
28 March 1991Cambridge Water Trmt P, USdaily high min17.2 C (63.0 F)2.8 C (5.0 F)68 years34 of 100 (Routine)
3 March 1991Cambridge Water Trmt P, USdaily high min10.0 C (50.0 F)1.1 C (2.0 F)69 years31 of 100 (Routine)
2 March 1991Cambridge Water Trmt P, USdaily high min14.4 C (57.9 F)1.1 C (2.0 F)18 years16 of 100 (Routine)
6 February 1991Cambridge Water Trmt P, USdaily high min8.3 C (46.9 F)1.6 C (2.9 F)81 years36 of 100 (Notable)
5 February 1991Cambridge Water Trmt P, USdaily high max22.2 C (72.0 F)4.4 C (7.9 F)81 years40 of 100 (Notable)

Climate Trend

75 complete years, 1902 to 1990
Annual mean temperature at Cambridge Water Trmt P as warming stripes, 1902 to 1990 One stripe for each of 75 complete years at Cambridge Water Trmt P, 1902 to 1990. Blue stripes are years cooler than the station's own mean of 13.7 C (56.6 F); red stripes are warmer. The coolest year was 1940, at 12.2 C (54.0 F), and the warmest was 1990, at 15.6 C (60.1 F). The strongest colour marks a difference of 2.0 C (3.6 F). 1902: 13.7 C, 0.0 C from the station mean1903: 13.3 C, -0.4 C from the station mean1904: 12.4 C, -1.2 C from the station mean1905: 13.5 C, -0.1 C from the station mean1906: 14.0 C, +0.4 C from the station mean1907: 13.0 C, -0.7 C from the station mean1908: 14.1 C, +0.4 C from the station mean1909: 14.2 C, +0.5 C from the station mean1910: 13.8 C, +0.2 C from the station mean1911: 14.9 C, +1.2 C from the station mean1913: 15.1 C, +1.4 C from the station mean1914: 13.6 C, -0.1 C from the station mean1915: 14.1 C, +0.4 C from the station mean1917: 12.3 C, -1.4 C from the station mean1923: 13.8 C, +0.1 C from the station mean1924: 12.4 C, -1.2 C from the station mean1925: 14.1 C, +0.4 C from the station mean1926: 12.8 C, -0.9 C from the station mean1928: 14.0 C, +0.3 C from the station mean1929: 14.2 C, +0.5 C from the station mean1930: 14.0 C, +0.3 C from the station mean1931: 14.3 C, +0.7 C from the station mean1932: 14.0 C, +0.3 C from the station mean1933: 14.0 C, +0.3 C from the station mean1934: 13.3 C, -0.4 C from the station mean1935: 13.3 C, -0.4 C from the station mean1936: 13.7 C, 0.0 C from the station mean1937: 13.8 C, +0.1 C from the station mean1938: 14.1 C, +0.4 C from the station mean1939: 14.0 C, +0.4 C from the station mean1940: 12.2 C, -1.4 C from the station mean1941: 13.7 C, +0.1 C from the station mean1947: 13.2 C, -0.5 C from the station mean1948: 13.2 C, -0.5 C from the station mean1949: 14.6 C, +1.0 C from the station mean1950: 13.4 C, -0.3 C from the station mean1951: 13.6 C, -0.1 C from the station mean1952: 14.1 C, +0.5 C from the station mean1953: 14.6 C, +0.9 C from the station mean1954: 14.0 C, +0.3 C from the station mean1955: 13.4 C, -0.3 C from the station mean1956: 13.6 C, -0.1 C from the station mean1957: 13.9 C, +0.2 C from the station mean1958: 12.3 C, -1.4 C from the station mean1959: 14.2 C, +0.5 C from the station mean1960: 12.6 C, -1.1 C from the station mean1961: 13.3 C, -0.4 C from the station mean1962: 12.7 C, -1.0 C from the station mean1963: 12.7 C, -1.0 C from the station mean1964: 13.4 C, -0.3 C from the station mean1965: 13.1 C, -0.6 C from the station mean1966: 12.7 C, -1.0 C from the station mean1967: 12.5 C, -1.2 C from the station mean1968: 13.2 C, -0.4 C from the station mean1969: 12.9 C, -0.8 C from the station mean1970: 13.4 C, -0.3 C from the station mean1971: 13.6 C, -0.1 C from the station mean1972: 13.1 C, -0.6 C from the station mean1973: 14.0 C, +0.4 C from the station mean1974: 13.7 C, +0.1 C from the station mean1975: 14.0 C, +0.3 C from the station mean1976: 13.3 C, -0.4 C from the station mean1977: 13.8 C, +0.1 C from the station mean1978: 13.5 C, -0.2 C from the station mean1979: 13.8 C, +0.1 C from the station mean1980: 14.2 C, +0.5 C from the station mean1981: 14.0 C, +0.3 C from the station mean1983: 14.4 C, +0.7 C from the station mean1984: 14.3 C, +0.6 C from the station mean1985: 14.7 C, +1.0 C from the station mean1986: 14.6 C, +1.0 C from the station mean1987: 14.6 C, +1.0 C from the station mean1988: 14.1 C, +0.4 C from the station mean1989: 13.9 C, +0.3 C from the station mean1990: 15.6 C, +2.0 C from the station mean1902191019201930194019501960197019801990
One stripe for each of 75 complete years at Cambridge Water Trmt P, 1902 to 1990. Blue stripes are years cooler than the station's own mean of 13.7 C (56.6 F); red stripes are warmer. The coolest year was 1940, at 12.2 C (54.0 F), and the warmest was 1990, at 15.6 C (60.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Cambridge Water Trmt P as warming stripes, 1902 to 1990
YearAnnual mean temperatureDifference from the station mean
190213.7 C+0.01 C
190313.3 C-0.41 C
190412.4 C-1.24 C
190513.5 C-0.14 C
190614.0 C+0.37 C
190713.0 C-0.65 C
190814.1 C+0.39 C
190914.2 C+0.48 C
191013.8 C+0.17 C
191114.9 C+1.18 C
191315.1 C+1.43 C
191413.6 C-0.08 C
191514.1 C+0.42 C
191712.3 C-1.35 C
192313.8 C+0.09 C
192412.4 C-1.24 C
192514.1 C+0.38 C
192612.8 C-0.92 C
192814.0 C+0.33 C
192914.2 C+0.55 C
193014.0 C+0.29 C
193114.3 C+0.66 C
193214.0 C+0.32 C
193314.0 C+0.35 C
193413.3 C-0.38 C
193513.3 C-0.37 C
193613.7 C+0.01 C
193713.8 C+0.14 C
193814.1 C+0.43 C
193914.0 C+0.36 C
194012.2 C-1.43 C
194113.7 C+0.07 C
194713.2 C-0.51 C
194813.2 C-0.48 C
194914.6 C+0.97 C
195013.4 C-0.32 C
195113.6 C-0.05 C
195214.1 C+0.46 C
195314.6 C+0.93 C
195414.0 C+0.28 C
195513.4 C-0.27 C
195613.6 C-0.10 C
195713.9 C+0.25 C
195812.3 C-1.36 C
195914.2 C+0.49 C
196012.6 C-1.10 C
196113.3 C-0.37 C
196212.7 C-1.00 C
196312.7 C-1.02 C
196413.4 C-0.29 C
196513.1 C-0.61 C
196612.7 C-0.99 C
196712.5 C-1.15 C
196813.2 C-0.44 C
196912.9 C-0.79 C
197013.4 C-0.30 C
197113.6 C-0.07 C
197213.1 C-0.57 C
197314.0 C+0.37 C
197413.7 C+0.06 C
197514.0 C+0.33 C
197613.3 C-0.37 C
197713.8 C+0.12 C
197813.5 C-0.15 C
197913.8 C+0.14 C
198014.2 C+0.53 C
198114.0 C+0.35 C
198314.4 C+0.73 C
198414.3 C+0.61 C
198514.7 C+0.99 C
198614.6 C+0.96 C
198714.6 C+0.97 C
198814.1 C+0.43 C
198913.9 C+0.26 C
199015.6 C+1.96 C

The fitted trend in annual mean temperature here over 1902 to 1990 is 0.03 C (-0.03 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cambridge Water Trmt P
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.03 C (-0.03 to 0.09) per decade0.1 F (-0.1 to 0.2) per decade1902 to 199075Not clearly different from zero
Mean daily maximum0.01 C (-0.07 to 0.08) per decade0.01 F (-0.12 to 0.14) per decade1902 to 199075Not clearly different from zero
Mean daily minimum0.06 C (0.00 to 0.11) per decade0.10 F (0.00 to 0.20) per decade1902 to 199075Not clearly different from zero

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

1893 to 1991
Yearly extremes at Cambridge Water Trmt P: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.1 C (106.0 F)193036.7 C (98.1 F)96
Coldest night (TNn)-21.1 C (-6.0 F)1934-13.3 C (8.1 F)96
Wettest day (Rx1day)261.6 mm (10.3 in)193573.1 mm (2.9 in)96
Wettest five days (Rx5day)384.8 mm (15.1 in)1935104.2 mm (4.1 in)96
Longest dry spell (CDD)35 days192118 days96

Hottest day (TXx)

Hottest day (TXx) at Cambridge Water Trmt P by year The hottest day of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 41.1 C (106.0 F) in 1930, marked on the chart; the median year is 36.7 C (98.1 F). 102030405019001920194019601980Record: 41.1 C (106.0 F) in 1930
The hottest day of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 41.1 C (106.0 F) in 1930, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Cambridge Water Trmt P by year
YearHottest day (TXx)
189336.1 C (97.0 F)
189417.8 C (64.0 F)
189523.9 C (75.0 F)
189635.6 C (96.1 F)
189935.6 C (96.1 F)
190033.9 C (93.0 F)
190137.8 C (100.0 F)
190238.9 C (102.0 F)
190337.2 C (99.0 F)
190436.7 C (98.1 F)
190536.7 C (98.1 F)
190636.7 C (98.1 F)
190736.1 C (97.0 F)
190838.3 C (100.9 F)
190936.7 C (98.1 F)
191036.1 C (97.0 F)
191139.4 C (102.9 F)
191237.2 C (99.0 F)
191338.3 C (100.9 F)
191438.3 C (100.9 F)
191539.4 C (102.9 F)
191637.2 C (99.0 F)
191736.7 C (98.1 F)
191840.0 C (104.0 F)
191938.9 C (102.0 F)
192036.7 C (98.1 F)
192138.9 C (102.0 F)
192235.0 C (95.0 F)
192335.0 C (95.0 F)
192435.6 C (96.1 F)
192538.3 C (100.9 F)
192637.2 C (99.0 F)
192734.4 C (93.9 F)
192835.6 C (96.1 F)
192936.7 C (98.1 F)
193041.1 C (106.0 F)
193135.6 C (96.1 F)
193238.9 C (102.0 F)
193336.7 C (98.1 F)
193437.8 C (100.0 F)
193535.0 C (95.0 F)
193638.9 C (102.0 F)
193736.7 C (98.1 F)
193835.0 C (95.0 F)
193935.6 C (96.1 F)
194037.8 C (100.0 F)
194136.7 C (98.1 F)
194236.1 C (97.0 F)
194336.1 C (97.0 F)
194420.0 C (68.0 F)
194634.4 C (93.9 F)
194736.1 C (97.0 F)
194837.8 C (100.0 F)
194937.2 C (99.0 F)
195035.0 C (95.0 F)
195136.7 C (98.1 F)
195238.3 C (100.9 F)
195338.3 C (100.9 F)
195437.8 C (100.0 F)
195536.7 C (98.1 F)
195635.0 C (95.0 F)
195737.8 C (100.0 F)
195835.0 C (95.0 F)
195937.8 C (100.0 F)
196034.4 C (93.9 F)
196134.4 C (93.9 F)
196237.2 C (99.0 F)
196336.1 C (97.0 F)
196436.1 C (97.0 F)
196535.0 C (95.0 F)
196636.1 C (97.0 F)
196733.3 C (91.9 F)
196836.7 C (98.1 F)
196937.8 C (100.0 F)
197034.4 C (93.9 F)
197134.4 C (93.9 F)
197234.4 C (93.9 F)
197335.6 C (96.1 F)
197434.4 C (93.9 F)
197535.6 C (96.1 F)
197634.4 C (93.9 F)
197736.7 C (98.1 F)
197835.6 C (96.1 F)
197934.4 C (93.9 F)
198038.3 C (100.9 F)
198136.1 C (97.0 F)
198235.0 C (95.0 F)
198338.3 C (100.9 F)
198435.0 C (95.0 F)
198535.6 C (96.1 F)
198637.2 C (99.0 F)
198738.3 C (100.9 F)
198838.9 C (102.0 F)
198936.1 C (97.0 F)
199037.2 C (99.0 F)
199136.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at Cambridge Water Trmt P by year The coldest night of the year at Cambridge Water Trmt P, 1893 to 1991. The record is -21.1 C (-6.0 F) in 1934, marked on the chart; the median year is -13.3 C (8.1 F). -25-20-15-10-519001920194019601980Record: -21.1 C (-6.0 F) in 1934
The coldest night of the year at Cambridge Water Trmt P, 1893 to 1991. The record is -21.1 C (-6.0 F) in 1934, marked on the chart; the median year is -13.3 C (8.1 F).
Coldest night (TNn) at Cambridge Water Trmt P by year
YearColdest night (TNn)
1893-15.6 C (3.9 F)
1894-10.0 C (14.0 F)
1895-7.8 C (18.0 F)
1896-12.8 C (9.0 F)
1899-9.4 C (15.1 F)
1900-11.7 C (10.9 F)
1901-10.6 C (12.9 F)
1902-14.4 C (6.1 F)
1903-14.4 C (6.1 F)
1904-16.1 C (3.0 F)
1905-16.7 C (1.9 F)
1906-13.9 C (7.0 F)
1907-16.1 C (3.0 F)
1908-12.8 C (9.0 F)
1909-12.2 C (10.0 F)
1910-13.3 C (8.1 F)
1911-9.4 C (15.1 F)
1912-20.6 C (-5.1 F)
1913-11.1 C (12.0 F)
1914-15.0 C (5.0 F)
1915-7.8 C (18.0 F)
1916-13.9 C (7.0 F)
1917-18.9 C (-2.0 F)
1918-18.3 C (-0.9 F)
1919-13.3 C (8.1 F)
1920-12.8 C (9.0 F)
1921-11.7 C (10.9 F)
1922-12.8 C (9.0 F)
1923-10.0 C (14.0 F)
1924-12.8 C (9.0 F)
1925-15.0 C (5.0 F)
1926-12.8 C (9.0 F)
1927-13.3 C (8.1 F)
1928-10.6 C (12.9 F)
1929-11.1 C (12.0 F)
1930-16.7 C (1.9 F)
1931-10.6 C (12.9 F)
1932-16.7 C (1.9 F)
1933-13.3 C (8.1 F)
1934-21.1 C (-6.0 F)
1935-20.6 C (-5.1 F)
1936-17.2 C (1.0 F)
1937-8.9 C (16.0 F)
1938-10.0 C (14.0 F)
1939-11.1 C (12.0 F)
1940-16.1 C (3.0 F)
1941-7.8 C (18.0 F)
1942-14.4 C (6.1 F)
1943-14.4 C (6.1 F)
1944-8.9 C (16.0 F)
1946-10.6 C (12.9 F)
1947-12.8 C (9.0 F)
1948-16.1 C (3.0 F)
1949-10.0 C (14.0 F)
1950-11.7 C (10.9 F)
1951-12.2 C (10.0 F)
1952-10.0 C (14.0 F)
1953-6.1 C (21.0 F)
1954-12.2 C (10.0 F)
1955-13.3 C (8.1 F)
1956-11.7 C (10.9 F)
1957-20.6 C (-5.1 F)
1958-17.2 C (1.0 F)
1959-12.8 C (9.0 F)
1960-13.3 C (8.1 F)
1961-21.1 C (-6.0 F)
1962-14.4 C (6.1 F)
1963-16.1 C (3.0 F)
1964-15.0 C (5.0 F)
1965-20.6 C (-5.1 F)
1966-16.1 C (3.0 F)
1967-15.0 C (5.0 F)
1968-14.4 C (6.1 F)
1969-12.8 C (9.0 F)
1970-15.6 C (3.9 F)
1971-15.0 C (5.0 F)
1972-15.0 C (5.0 F)
1973-11.7 C (10.9 F)
1974-11.1 C (12.0 F)
1975-8.3 C (17.1 F)
1976-11.7 C (10.9 F)
1977-17.2 C (1.0 F)
1978-11.1 C (12.0 F)
1979-18.3 C (-0.9 F)
1980-14.4 C (6.1 F)
1981-16.1 C (3.0 F)
1982-20.6 C (-5.1 F)
1983-17.8 C (0.0 F)
1984-16.7 C (1.9 F)
1985-20.6 C (-5.1 F)
1986-11.1 C (12.0 F)
1987-18.9 C (-2.0 F)
1988-15.0 C (5.0 F)
1989-14.4 C (6.1 F)
1990-12.8 C (9.0 F)
1991-8.9 C (16.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Cambridge Water Trmt P by year The wettest day of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 261.6 mm (10.3 in) in 1935, marked on the chart; the median year is 73.1 mm (2.9 in). 010020030019001920194019601980Record: 261.6 mm (10.3 in) in 1935
The wettest day of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 261.6 mm (10.3 in) in 1935, marked on the chart; the median year is 73.1 mm (2.9 in).
Wettest day (Rx1day) at Cambridge Water Trmt P by year
YearWettest day (Rx1day)
1893130.0 mm (5.1 in)
189425.4 mm (1.0 in)
189530.5 mm (1.2 in)
189663.5 mm (2.5 in)
189981.3 mm (3.2 in)
190067.3 mm (2.6 in)
190143.2 mm (1.7 in)
190273.7 mm (2.9 in)
190383.6 mm (3.3 in)
190487.6 mm (3.4 in)
190571.9 mm (2.8 in)
190677.2 mm (3.0 in)
190753.8 mm (2.1 in)
190861.7 mm (2.4 in)
190960.5 mm (2.4 in)
191084.8 mm (3.3 in)
191192.2 mm (3.6 in)
191285.9 mm (3.4 in)
191357.7 mm (2.3 in)
191481.3 mm (3.2 in)
1915129.8 mm (5.1 in)
191657.2 mm (2.3 in)
1917114.3 mm (4.5 in)
191881.3 mm (3.2 in)
1919101.6 mm (4.0 in)
192051.8 mm (2.0 in)
192148.3 mm (1.9 in)
192261.0 mm (2.4 in)
192355.6 mm (2.2 in)
192477.5 mm (3.1 in)
192565.5 mm (2.6 in)
192644.5 mm (1.8 in)
1927182.6 mm (7.2 in)
192880.0 mm (3.1 in)
192972.4 mm (2.9 in)
193030.5 mm (1.2 in)
1931139.7 mm (5.5 in)
193250.8 mm (2.0 in)
1933111.8 mm (4.4 in)
193448.8 mm (1.9 in)
1935261.6 mm (10.3 in)
193670.1 mm (2.8 in)
193766.0 mm (2.6 in)
193856.1 mm (2.2 in)
193992.7 mm (3.6 in)
194071.1 mm (2.8 in)
194195.3 mm (3.8 in)
194255.9 mm (2.2 in)
194348.3 mm (1.9 in)
194432.0 mm (1.3 in)
194668.1 mm (2.7 in)
194782.6 mm (3.3 in)
194888.9 mm (3.5 in)
1949110.5 mm (4.4 in)
195042.7 mm (1.7 in)
1951128.5 mm (5.1 in)
195285.1 mm (3.4 in)
195380.3 mm (3.2 in)
195447.2 mm (1.9 in)
1955137.2 mm (5.4 in)
195667.3 mm (2.6 in)
195799.1 mm (3.9 in)
1958115.8 mm (4.6 in)
195970.6 mm (2.8 in)
1960167.4 mm (6.6 in)
196149.8 mm (2.0 in)
196249.8 mm (2.0 in)
196367.8 mm (2.7 in)
196493.2 mm (3.7 in)
1965124.2 mm (4.9 in)
196697.8 mm (3.9 in)
196764.3 mm (2.5 in)
196856.4 mm (2.2 in)
1969104.1 mm (4.1 in)
1970103.1 mm (4.1 in)
1971153.7 mm (6.1 in)
197279.2 mm (3.1 in)
197374.4 mm (2.9 in)
1974103.1 mm (4.1 in)
197569.1 mm (2.7 in)
197667.3 mm (2.6 in)
197762.7 mm (2.5 in)
197853.3 mm (2.1 in)
197989.2 mm (3.5 in)
198075.4 mm (3.0 in)
198174.9 mm (2.9 in)
198245.7 mm (1.8 in)
198371.1 mm (2.8 in)
1984101.6 mm (4.0 in)
1985177.8 mm (7.0 in)
198685.1 mm (3.4 in)
198743.2 mm (1.7 in)
198865.0 mm (2.6 in)
198966.0 mm (2.6 in)
199082.0 mm (3.2 in)
199137.8 mm (1.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Cambridge Water Trmt P by year The wettest five days of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 384.8 mm (15.1 in) in 1935, marked on the chart; the median year is 104.2 mm (4.1 in). 010020030040019001920194019601980Record: 384.8 mm (15.1 in) in 1935
The wettest five days of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 384.8 mm (15.1 in) in 1935, marked on the chart; the median year is 104.2 mm (4.1 in).
Wettest five days (Rx5day) at Cambridge Water Trmt P by year
YearWettest five days (Rx5day)
1893130.0 mm (5.1 in)
189449.6 mm (2.0 in)
189552.6 mm (2.1 in)
189670.6 mm (2.8 in)
189986.4 mm (3.4 in)
1900105.4 mm (4.1 in)
190161.7 mm (2.4 in)
190292.9 mm (3.7 in)
1903110.8 mm (4.4 in)
1904127.5 mm (5.0 in)
190580.5 mm (3.2 in)
190687.8 mm (3.5 in)
190794.0 mm (3.7 in)
190888.5 mm (3.5 in)
190964.6 mm (2.5 in)
1910119.2 mm (4.7 in)
1911170.7 mm (6.7 in)
1912113.1 mm (4.5 in)
191389.7 mm (3.5 in)
1914117.7 mm (4.6 in)
1915156.7 mm (6.2 in)
1916149.9 mm (5.9 in)
1917127.0 mm (5.0 in)
1918167.4 mm (6.6 in)
1919131.6 mm (5.2 in)
1920121.4 mm (4.8 in)
192172.6 mm (2.9 in)
1922101.9 mm (4.0 in)
192389.1 mm (3.5 in)
1924100.6 mm (4.0 in)
192588.1 mm (3.5 in)
192674.1 mm (2.9 in)
1927188.7 mm (7.4 in)
1928114.3 mm (4.5 in)
1929119.7 mm (4.7 in)
193050.7 mm (2.0 in)
1931196.4 mm (7.7 in)
193275.0 mm (3.0 in)
1933184.1 mm (7.2 in)
193468.5 mm (2.7 in)
1935384.8 mm (15.1 in)
193680.2 mm (3.2 in)
1937110.5 mm (4.4 in)
1938129.3 mm (5.1 in)
193995.3 mm (3.8 in)
194078.7 mm (3.1 in)
1941164.3 mm (6.5 in)
1942103.9 mm (4.1 in)
194371.1 mm (2.8 in)
194468.6 mm (2.7 in)
1946109.0 mm (4.3 in)
194784.7 mm (3.3 in)
1948200.2 mm (7.9 in)
1949176.6 mm (7.0 in)
195080.8 mm (3.2 in)
1951128.5 mm (5.1 in)
1952136.9 mm (5.4 in)
1953101.4 mm (4.0 in)
195459.1 mm (2.3 in)
1955271.1 mm (10.7 in)
1956132.3 mm (5.2 in)
1957108.3 mm (4.3 in)
1958182.1 mm (7.2 in)
1959108.7 mm (4.3 in)
1960218.7 mm (8.6 in)
196187.4 mm (3.4 in)
196273.4 mm (2.9 in)
196386.3 mm (3.4 in)
196494.3 mm (3.7 in)
1965140.7 mm (5.5 in)
1966108.0 mm (4.3 in)
1967150.4 mm (5.9 in)
196869.9 mm (2.8 in)
1969123.5 mm (4.9 in)
1970104.4 mm (4.1 in)
1971188.0 mm (7.4 in)
1972124.7 mm (4.9 in)
197377.2 mm (3.0 in)
1974135.1 mm (5.3 in)
1975146.0 mm (5.7 in)
197677.4 mm (3.0 in)
197796.0 mm (3.8 in)
197880.0 mm (3.1 in)
1979127.8 mm (5.0 in)
198082.0 mm (3.2 in)
198198.3 mm (3.9 in)
198262.2 mm (2.4 in)
1983126.2 mm (5.0 in)
1984169.2 mm (6.7 in)
1985194.1 mm (7.6 in)
198698.6 mm (3.9 in)
198797.0 mm (3.8 in)
198872.3 mm (2.8 in)
198998.8 mm (3.9 in)
1990112.8 mm (4.4 in)
199183.1 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Cambridge Water Trmt P by year The longest dry spell of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 35 days in 1921, marked on the chart; the median year is 18 days. 01020304019001920194019601980Record: 35 days in 1921
The longest dry spell of the year at Cambridge Water Trmt P, 1893 to 1991. The record is 35 days in 1921, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Cambridge Water Trmt P by year
YearLongest dry spell (CDD)
189311 days
189410 days
189517 days
189618 days
189922 days
190016 days
19017 days
190219 days
190320 days
190422 days
190512 days
190616 days
190713 days
190818 days
190912 days
191030 days
191123 days
191217 days
191315 days
191418 days
191513 days
191617 days
191730 days
191819 days
191920 days
192026 days
192135 days
192224 days
192325 days
192426 days
192514 days
192619 days
192721 days
192813 days
192917 days
193030 days
193120 days
193216 days
193314 days
193419 days
193517 days
193622 days
193717 days
193816 days
193919 days
194014 days
194127 days
194224 days
194318 days
194411 days
194620 days
194725 days
194812 days
194923 days
195015 days
195115 days
195223 days
195318 days
195420 days
195513 days
195616 days
195713 days
195817 days
195917 days
196015 days
196121 days
196218 days
196328 days
196428 days
196519 days
196618 days
196717 days
196824 days
196919 days
197021 days
197116 days
197212 days
197326 days
197417 days
197520 days
197626 days
197719 days
197821 days
197912 days
198017 days
198116 days
198233 days
198313 days
198423 days
198521 days
198634 days
198715 days
198815 days
198923 days
199016 days
199116 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

75 years with a frost

Across 75 years with a frost, the median last spring frost at Cambridge Water Trmt P falls on 10 April and the median first autumn frost on 31 October, which leaves a median of 202 days between them.

In 1960 to 1990 the median growing season was 206 days. That is 8 days more than in 1902 to 1939.

Fitted over all years, the growing season changes by +0.7 days per decade at this station.

Frost dates and growing season at Cambridge Water Trmt P
MeasureMedian, all yearsEarliest period (1902 to 1939)Recent period (1960 to 1990)Recent against earliestFitted trend
Last spring frost10 April10 April11 April1 day later-0.5 days per decade
First autumn frost31 October31 October31 Octoberno change+0.1 days per decade
Growing days202 days198 days206 days8 days more+0.7 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

76 years, 1902 to 1990

A day with at least 76.9 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 225.1 mm (8.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Cambridge Water Trmt P: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years76.9 mm (3.0 in)
5 years107.2 mm (4.2 in)
10 years130.6 mm (5.1 in)
25 years164.5 mm (6.5 in)
50 years193.2 mm (7.6 in)
100 years225.1 mm (8.9 in)Longer than the 76 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, 76 years of values from 1902 to 1990.

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: 261.6 mm (10.3 in) in 1935; 182.6 mm (7.2 in) in 1927; 177.8 mm (7.0 in) in 1985.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Cambridge Water Trmt P, at 1978. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1978 ran 0.4 C (0.6 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Cambridge Water Trmt P, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1978+0.4+0.6likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

  • Data for Cambridge Water Trmt P standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Cambridge Water Trmt P 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).