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Mansfield Hollow Lake Weather Records (USC00064488)

Record envelope, standing records and threshold days for Mansfield Hollow Lake (USC00064488), Connecticut, United States, with 56 years of record.

Key Facts for Mansfield Hollow Lake

  • Mansfield Hollow Lake (USC00064488) is a weather station in Connecticut, United States at 41.76 latitude and -72.19 longitude, 76 m (250 ft) above sea level.
  • The station reports from 1952 to 2007, 56 years of record.
  • 1,464 records set at Mansfield Hollow Lake still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mansfield Hollow Lake set a daily record high maximum temperature of 28.9 C (84.0 F) on 24 April 2007.

About the Station

  • Location: Connecticut, United States, 41.76 latitude, -72.19 longitude.
  • Elevation: 76 m (250 ft).
  • Period of record: 1952 to 2007, 56 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 Mansfield Hollow Lake, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mansfield Hollow Lake. 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 Mansfield Hollow Lake. 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 Mansfield Hollow Lake, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan20.6 C (69.1 F)-32.8 C (-27.0 F)n/an/a
Feb22.2 C (72.0 F)-29.4 C (-20.9 F)n/an/a
Mar27.8 C (82.0 F)-26.7 C (-16.1 F)n/an/a
Apr33.9 C (93.0 F)-14.4 C (6.1 F)n/an/a
May35.0 C (95.0 F)-5.6 C (21.9 F)n/an/a
Jun36.7 C (98.1 F)-1.1 C (30.0 F)n/an/a
Jul37.8 C (100.0 F)2.8 C (37.0 F)n/an/a
Aug37.8 C (100.0 F)0.0 C (32.0 F)n/an/a
Sep37.8 C (100.0 F)-6.7 C (19.9 F)n/an/a
Oct31.1 C (88.0 F)-9.4 C (15.1 F)n/an/a
Nov26.7 C (80.1 F)-17.2 C (1.0 F)n/an/a
Dec23.9 C (75.0 F)-27.8 C (-18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mansfield Hollow Lake by the year they were set 1,464 records at Mansfield Hollow Lake still stand. 1957 holds the most, with 57. 02040601952: 191953: 511954: 371955: 361956: 491957: 571958: 331959: 471960: 261961: 401962: 341963: 471964: 391965: 331966: 261967: 441968: 331969: 181970: 241971: 201972: 141973: 171974: 281975: 231976: 351977: 221978: 231979: 471980: 151981: 261982: 271983: 241984: 311985: 201986: 171987: 281988: 301989: 291990: 291991: 181992: 121993: 201994: 211995: 171996: 301997: 131998: 161999: 52000: 42001: 192002: 252003: 102004: 142005: 232006: 102007: 91952195819641970197619821988199420002006
1,464 records at Mansfield Hollow Lake still stand. 1957 holds the most, with 57.
Standing records at Mansfield Hollow Lake by the year they were set
Year setStanding records
195219
195351
195437
195536
195649
195757
195833
195947
196026
196140
196234
196347
196439
196533
196626
196744
196833
196918
197024
197120
197214
197317
197428
197523
197635
197722
197823
197947
198015
198126
198227
198324
198431
198520
198617
198728
198830
198929
199029
199118
199212
199320
199421
199517
199630
199713
199816
19995
20004
200119
200225
200310
200414
200523
200610
20079

All-Time Record Progression

1 new records
When Mansfield Hollow Lake set new all-time records 1 all-time records were set at Mansfield Hollow Lake between 20 August 1991 and 20 August 1991. Each dot is a new record. Record daily precipitation20 August 1991: Record daily precipitation 140.0 mm (5.5 in)
1 all-time records were set at Mansfield Hollow Lake between 20 August 1991 and 20 August 1991. Each dot is a new record.
When Mansfield Hollow Lake set new all-time records
DateKindDetail
1991-08-20Record daily precipitationRecord daily precipitation 140.0 mm (5.5 in)

Wettest Day of Each Month

Aug: 140.0 mm (5.5 in)
Record daily precipitation for each month at Mansfield Hollow Lake The wettest day on record for each calendar month at Mansfield Hollow Lake. The most was 140.0 mm (5.5 in) on 20 August 1991. 050100150 Jan: 85.1 mm (3.4 in), 26 January 1978 Jan Feb: 63.5 mm (2.5 in), 7 February 1978 Feb Mar: 104.1 mm (4.1 in), 22 March 1980 Mar Apr: 92.2 mm (3.6 in), 14 April 2004 Apr May: 68.6 mm (2.7 in), 13 May 2006 May Jun: 115.3 mm (4.5 in), 18 June 2001 Jun Jul: 105.7 mm (4.2 in), 19 July 1965 Jul Aug: 140.0 mm (5.5 in), 20 August 1991 Aug Sep: 113.0 mm (4.4 in), 17 September 1999 Sep Oct: 122.9 mm (4.8 in), 14 October 1990 Oct Nov: 67.3 mm (2.6 in), 2 November 1988 Nov Dec: 71.1 mm (2.8 in), 18 December 2003 Dec
The wettest day on record for each calendar month at Mansfield Hollow Lake. The most was 140.0 mm (5.5 in) on 20 August 1991.
Record daily precipitation for each month at Mansfield Hollow Lake
MonthRecord daily precipitation (mm)Date
Jan85.1 mm (3.4 in)26 January 1978
Feb63.5 mm (2.5 in)7 February 1978
Mar104.1 mm (4.1 in)22 March 1980
Apr92.2 mm (3.6 in)14 April 2004
May68.6 mm (2.7 in)13 May 2006
Jun115.3 mm (4.5 in)18 June 2001
Jul105.7 mm (4.2 in)19 July 1965
Aug140.0 mm (5.5 in)20 August 1991
Sep113.0 mm (4.4 in)17 September 1999
Oct122.9 mm (4.8 in)14 October 1990
Nov67.3 mm (2.6 in)2 November 1988
Dec71.1 mm (2.8 in)18 December 2003

Period of Record Coverage

1952 to 2007
Days with data per year at Mansfield Hollow Lake 56 years of record at Mansfield Hollow Lake, 1952 to 2007. 12 years have data for under 90 percent of days and are left out of rankings: 1952, 1991, 1992, 1993, 1994, 1999, 2000, 2001 and others. 1952: 229 of 366 days1953: 364 of 365 days1954: 362 of 365 days1955: 362 of 365 days1956: 364 of 366 days1957: 362 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 364 of 366 days1961: 364 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 363 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 361 of 365 days1984: 365 of 366 days1985: 363 of 365 days1986: 362 of 365 days1987: 363 of 365 days1988: 365 of 366 days1989: 364 of 365 days1990: 346 of 365 days1991: 208 of 365 days1992: 236 of 366 days1993: 221 of 365 days1994: 319 of 365 days1995: 335 of 365 days1996: 355 of 366 days1997: 349 of 365 days1998: 341 of 365 days1999: 188 of 365 days2000: 49 of 366 days2001: 328 of 365 days2002: 259 of 365 days2003: 210 of 365 days2004: 359 of 366 days2005: 339 of 365 days2006: 288 of 365 days2007: 88 of 365 days19601970198019902000
56 years of record at Mansfield Hollow Lake, 1952 to 2007. 12 years have data for under 90 percent of days and are left out of rankings: 1952, 1991, 1992, 1993, 1994, 1999, 2000, 2001 and others.
Days with data per year at Mansfield Hollow Lake
YearDays with dataShare of yearComplete
195222963%No
1953364100%Yes
195436299%Yes
195536299%Yes
195636499%Yes
195736299%Yes
1958365100%Yes
1959365100%Yes
196036499%Yes
1961364100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
196936399%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977364100%Yes
197836399%Yes
1979365100%Yes
1980365100%Yes
1981365100%Yes
1982365100%Yes
198336199%Yes
1984365100%Yes
198536399%Yes
198636299%Yes
198736399%Yes
1988365100%Yes
1989364100%Yes
199034695%Yes
199120857%No
199223664%No
199322161%No
199431987%No
199533592%Yes
199635597%Yes
199734996%Yes
199834193%Yes
199918852%No
20004913%No
200132890%No
200225971%No
200321058%No
200435998%Yes
200533993%Yes
200628879%No
20078824%No

Latest Records

20
Latest records at Mansfield Hollow Lake
DateStationRecordValueBeat old record byOld record stoodSignificance
24 April 2007Mansfield Hollow Lake, USdaily high max28.9 C (84.0 F)2.8 C (5.0 F)33 years19 of 100 (Routine)
13 April 2007Mansfield Hollow Lake, USdaily low max3.9 C (39.0 F)1.1 C (2.0 F)30 years15 of 100 (Routine)
15 March 2007Mansfield Hollow Lake, USdaily high max19.4 C (66.9 F)1.6 C (2.9 F)16 years12 of 100 (Routine)
9 March 2007Mansfield Hollow Lake, USdaily low min (Tie)-16.1 C (3.0 F)tie28 years3 of 100 (Routine)
8 March 2007Mansfield Hollow Lake, USdaily low min (Tie)-15.6 C (3.9 F)tie16 years2 of 100 (Routine)
7 March 2007Mansfield Hollow Lake, USmonthly low max-11.1 C (12.0 F)1.1 C (2.0 F)39 years27 of 100 (Routine)
6 March 2007Mansfield Hollow Lake, USdaily low min-16.7 C (1.9 F)2.3 C (4.1 F)37 years20 of 100 (Routine)
27 February 2007Mansfield Hollow Lake, USdaily snowfall5.1 cm (2.0 in)2.6 cm (1.0 in)37 years19 of 100 (Routine)
23 February 2007Mansfield Hollow Lake, USdaily snowfall7.6 cm (3.0 in)1.2 cm (0.5 in)5 years7 of 100 (Routine)
6 February 2007Mansfield Hollow Lake, USdaily low max (Tie)-8.9 C (16.0 F)tie32 years3 of 100 (Routine)
27 January 2007Mansfield Hollow Lake, USdaily low max-10.6 C (12.9 F)1.7 C (3.1 F)12 years10 of 100 (Routine)
15 January 2007Mansfield Hollow Lake, USdaily high min0.6 C (33.1 F)0.6 C (1.1 F)27 years13 of 100 (Routine)
8 January 2007Mansfield Hollow Lake, USmonthly high max20.6 C (69.1 F)1.7 C (3.1 F)41 years29 of 100 (Routine)
8 January 2007Mansfield Hollow Lake, USdaily high min2.8 C (37.0 F)1.1 C (2.0 F)8 years8 of 100 (Routine)
15 December 2006Mansfield Hollow Lake, USdaily high max13.3 C (55.9 F)0.5 C (0.9 F)31 years14 of 100 (Routine)
13 December 2006Mansfield Hollow Lake, USdaily high min (Tie)1.7 C (35.1 F)tie49 years4 of 100 (Routine)
1 December 2006Mansfield Hollow Lake, USdaily high min10.0 C (50.0 F)1.7 C (3.1 F)4 years8 of 100 (Routine)
1 December 2006Mansfield Hollow Lake, USdaily high max (Tie)17.2 C (63.0 F)tie4 years1 of 100 (Routine)
24 November 2006Mansfield Hollow Lake, USdaily rain55.9 mm (2.2 in)38.6 mm (1.5 in)16 years39 of 100 (Notable)
12 October 2006Mansfield Hollow Lake, USdaily rain49.0 mm (1.9 in)21.1 mm (0.8 in)31 years26 of 100 (Routine)

Climate Trend

42 complete years, 1953 to 2005
Annual mean temperature at Mansfield Hollow Lake as warming stripes, 1953 to 2005 One stripe for each of 42 complete years at Mansfield Hollow Lake, 1953 to 2005. Blue stripes are years cooler than the station's own mean of 8.8 C (47.9 F); red stripes are warmer. The coolest year was 1962, at 7.8 C (46.0 F), and the warmest was 1953, at 10.5 C (50.8 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1953: 10.5 C, +1.6 C from the station mean1954: 9.5 C, +0.6 C from the station mean1955: 9.6 C, +0.8 C from the station mean1956: 9.0 C, +0.2 C from the station mean1957: 9.9 C, +1.0 C from the station mean1958: 7.9 C, -1.0 C from the station mean1959: 9.2 C, +0.4 C from the station mean1960: 8.4 C, -0.4 C from the station mean1961: 8.5 C, -0.3 C from the station mean1962: 7.8 C, -1.0 C from the station mean1963: 8.0 C, -0.8 C from the station mean1964: 8.3 C, -0.5 C from the station mean1965: 8.2 C, -0.6 C from the station mean1966: 8.5 C, -0.4 C from the station mean1967: 8.2 C, -0.7 C from the station mean1968: 8.4 C, -0.4 C from the station mean1969: 8.7 C, -0.2 C from the station mean1970: 8.3 C, -0.5 C from the station mean1971: 8.7 C, -0.1 C from the station mean1972: 8.3 C, -0.6 C from the station mean1973: 9.7 C, +0.9 C from the station mean1974: 8.6 C, -0.2 C from the station mean1975: 9.4 C, +0.5 C from the station mean1976: 8.4 C, -0.4 C from the station mean1977: 8.6 C, -0.2 C from the station mean1978: 8.0 C, -0.8 C from the station mean1979: 9.6 C, +0.7 C from the station mean1980: 8.8 C, 0.0 C from the station mean1981: 9.0 C, +0.1 C from the station mean1982: 8.8 C, -0.1 C from the station mean1983: 9.9 C, +1.0 C from the station mean1984: 9.5 C, +0.6 C from the station mean1985: 9.1 C, +0.3 C from the station mean1986: 8.9 C, +0.1 C from the station mean1987: 8.9 C, +0.1 C from the station mean1988: 8.8 C, -0.1 C from the station mean1989: 8.8 C, -0.1 C from the station mean1990: 10.0 C, +1.2 C from the station mean1996: 8.5 C, -0.4 C from the station mean1997: 8.7 C, -0.2 C from the station mean2004: 8.6 C, -0.3 C from the station mean2005: 9.2 C, +0.3 C from the station mean19531960196519701975198019851990199520002005
One stripe for each of 42 complete years at Mansfield Hollow Lake, 1953 to 2005. Blue stripes are years cooler than the station's own mean of 8.8 C (47.9 F); red stripes are warmer. The coolest year was 1962, at 7.8 C (46.0 F), and the warmest was 1953, at 10.5 C (50.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Mansfield Hollow Lake as warming stripes, 1953 to 2005
YearAnnual mean temperatureDifference from the station mean
195310.5 C+1.62 C
19549.5 C+0.60 C
19559.6 C+0.77 C
19569.0 C+0.16 C
19579.9 C+1.00 C
19587.9 C-0.99 C
19599.2 C+0.35 C
19608.4 C-0.41 C
19618.5 C-0.33 C
19627.8 C-1.05 C
19638.0 C-0.83 C
19648.3 C-0.54 C
19658.2 C-0.63 C
19668.5 C-0.39 C
19678.2 C-0.70 C
19688.4 C-0.44 C
19698.7 C-0.16 C
19708.3 C-0.53 C
19718.7 C-0.12 C
19728.3 C-0.57 C
19739.7 C+0.85 C
19748.6 C-0.23 C
19759.4 C+0.52 C
19768.4 C-0.41 C
19778.6 C-0.24 C
19788.0 C-0.83 C
19799.6 C+0.71 C
19808.8 C-0.02 C
19819.0 C+0.14 C
19828.8 C-0.06 C
19839.9 C+1.00 C
19849.5 C+0.61 C
19859.1 C+0.28 C
19868.9 C+0.09 C
19878.9 C+0.09 C
19888.8 C-0.07 C
19898.8 C-0.10 C
199010.0 C+1.19 C
19968.5 C-0.36 C
19978.7 C-0.19 C
20048.6 C-0.26 C
20059.2 C+0.34 C

The fitted trend in annual mean temperature here over 1953 to 2005 is 0.02 C (-0.13 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.23 to 0.29) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mansfield Hollow Lake
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.02 C (-0.13 to 0.16) per decade0.03 F (-0.23 to 0.29) per decade1953 to 200542Not clearly different from zero
Mean daily maximum-0.1 C (-0.3 to 0.1) per decade-0.2 F (-0.5 to 0.1) per decade1953 to 200542Not clearly different from zero
Mean daily minimum0.14 C (-0.02 to 0.30) per decade0.25 F (-0.03 to 0.53) per decade1953 to 200542Not 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

1952 to 2007
Yearly extremes at Mansfield Hollow Lake: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)195334.4 C (93.9 F)56
Coldest night (TNn)-32.8 C (-27.0 F)1961-23.3 C (-9.9 F)56
Wettest day (Rx1day)140.0 mm (5.5 in)199171.4 mm (2.8 in)56
Wettest five days (Rx5day)213.8 mm (8.4 in)1982103.0 mm (4.1 in)56
Longest dry spell (CDD)36 days199916 days56

Hottest day (TXx)

Hottest day (TXx) at Mansfield Hollow Lake by year The hottest day of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 37.8 C (100.0 F) in 1953, marked on the chart; the median year is 34.4 C (93.9 F). 2530354019601970198019902000Record: 37.8 C (100.0 F) in 1953
The hottest day of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 37.8 C (100.0 F) in 1953, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Mansfield Hollow Lake by year
YearHottest day (TXx)
195236.7 C (98.1 F)
195337.8 C (100.0 F)
195434.4 C (93.9 F)
195537.2 C (99.0 F)
195634.4 C (93.9 F)
195736.1 C (97.0 F)
195833.3 C (91.9 F)
195934.4 C (93.9 F)
196032.2 C (90.0 F)
196133.9 C (93.0 F)
196235.0 C (95.0 F)
196335.6 C (96.1 F)
196436.7 C (98.1 F)
196534.4 C (93.9 F)
196636.1 C (97.0 F)
196734.4 C (93.9 F)
196836.1 C (97.0 F)
196933.9 C (93.0 F)
197035.6 C (96.1 F)
197133.9 C (93.0 F)
197232.2 C (90.0 F)
197333.3 C (91.9 F)
197433.3 C (91.9 F)
197537.8 C (100.0 F)
197633.9 C (93.0 F)
197736.1 C (97.0 F)
197833.9 C (93.0 F)
197934.4 C (93.9 F)
198036.1 C (97.0 F)
198134.4 C (93.9 F)
198235.6 C (96.1 F)
198336.7 C (98.1 F)
198434.4 C (93.9 F)
198532.8 C (91.0 F)
198633.3 C (91.9 F)
198734.4 C (93.9 F)
198837.2 C (99.0 F)
198934.4 C (93.9 F)
199032.8 C (91.0 F)
199137.8 C (100.0 F)
199233.3 C (91.9 F)
199335.0 C (95.0 F)
199433.9 C (93.0 F)
199536.1 C (97.0 F)
199633.3 C (91.9 F)
199736.1 C (97.0 F)
199832.2 C (90.0 F)
199936.7 C (98.1 F)
200026.1 C (79.0 F)
200137.8 C (100.0 F)
200235.0 C (95.0 F)
200333.9 C (93.0 F)
200432.2 C (90.0 F)
200536.1 C (97.0 F)
200635.6 C (96.1 F)
200728.9 C (84.0 F)

Coldest night (TNn)

Coldest night (TNn) at Mansfield Hollow Lake by year The coldest night of the year at Mansfield Hollow Lake, 1952 to 2007. The record is -32.8 C (-27.0 F) in 1961, marked on the chart; the median year is -23.3 C (-9.9 F). -35-30-25-20-15-1019601970198019902000Record: -32.8 C (-27.0 F) in 1961
The coldest night of the year at Mansfield Hollow Lake, 1952 to 2007. The record is -32.8 C (-27.0 F) in 1961, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Mansfield Hollow Lake by year
YearColdest night (TNn)
1952-15.6 C (3.9 F)
1953-15.6 C (3.9 F)
1954-29.4 C (-20.9 F)
1955-25.0 C (-13.0 F)
1956-21.7 C (-7.1 F)
1957-32.2 C (-26.0 F)
1958-24.4 C (-11.9 F)
1959-20.6 C (-5.1 F)
1960-22.2 C (-8.0 F)
1961-32.8 C (-27.0 F)
1962-25.6 C (-14.1 F)
1963-27.8 C (-18.0 F)
1964-25.0 C (-13.0 F)
1965-29.4 C (-20.9 F)
1966-23.9 C (-11.0 F)
1967-28.3 C (-18.9 F)
1968-26.7 C (-16.1 F)
1969-21.1 C (-6.0 F)
1970-27.2 C (-17.0 F)
1971-28.9 C (-20.0 F)
1972-23.3 C (-9.9 F)
1973-19.4 C (-2.9 F)
1974-23.3 C (-9.9 F)
1975-23.3 C (-9.9 F)
1976-22.2 C (-8.0 F)
1977-24.4 C (-11.9 F)
1978-23.9 C (-11.0 F)
1979-27.8 C (-18.0 F)
1980-27.8 C (-18.0 F)
1981-28.9 C (-20.0 F)
1982-28.3 C (-18.9 F)
1983-20.6 C (-5.1 F)
1984-30.6 C (-23.1 F)
1985-22.2 C (-8.0 F)
1986-18.3 C (-0.9 F)
1987-25.0 C (-13.0 F)
1988-30.0 C (-22.0 F)
1989-26.1 C (-15.0 F)
1990-19.4 C (-2.9 F)
1991-20.6 C (-5.1 F)
1992-20.0 C (-4.0 F)
1993-19.4 C (-2.9 F)
1994-26.1 C (-15.0 F)
1995-21.1 C (-6.0 F)
1996-28.3 C (-18.9 F)
1997-18.9 C (-2.0 F)
1998-18.3 C (-0.9 F)
1999-17.8 C (0.0 F)
2000-17.2 C (1.0 F)
2001-18.9 C (-2.0 F)
2002-15.0 C (5.0 F)
2003-14.4 C (6.1 F)
2004-22.8 C (-9.0 F)
2005-22.8 C (-9.0 F)
2006-15.6 C (3.9 F)
2007-17.8 C (0.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mansfield Hollow Lake by year The wettest day of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 140.0 mm (5.5 in) in 1991, marked on the chart; the median year is 71.4 mm (2.8 in). 05010015019601970198019902000Record: 140.0 mm (5.5 in) in 1991
The wettest day of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 140.0 mm (5.5 in) in 1991, marked on the chart; the median year is 71.4 mm (2.8 in).
Wettest day (Rx1day) at Mansfield Hollow Lake by year
YearWettest day (Rx1day)
195269.9 mm (2.8 in)
195355.9 mm (2.2 in)
195486.4 mm (3.4 in)
1955128.3 mm (5.1 in)
195647.5 mm (1.9 in)
195743.2 mm (1.7 in)
195857.2 mm (2.3 in)
195962.2 mm (2.4 in)
196093.2 mm (3.7 in)
196137.3 mm (1.5 in)
196254.6 mm (2.1 in)
196340.1 mm (1.6 in)
196462.7 mm (2.5 in)
1965105.7 mm (4.2 in)
196653.3 mm (2.1 in)
196747.5 mm (1.9 in)
196854.4 mm (2.1 in)
196963.5 mm (2.5 in)
197050.8 mm (2.0 in)
197183.8 mm (3.3 in)
197266.8 mm (2.6 in)
197371.6 mm (2.8 in)
197472.4 mm (2.9 in)
197553.3 mm (2.1 in)
197652.3 mm (2.1 in)
197756.4 mm (2.2 in)
197885.1 mm (3.4 in)
197976.2 mm (3.0 in)
1980104.1 mm (4.1 in)
198143.9 mm (1.7 in)
198282.6 mm (3.3 in)
198372.4 mm (2.9 in)
198491.9 mm (3.6 in)
198572.4 mm (2.9 in)
198657.7 mm (2.3 in)
198775.2 mm (3.0 in)
198879.8 mm (3.1 in)
198988.6 mm (3.5 in)
1990122.9 mm (4.8 in)
1991140.0 mm (5.5 in)
199284.1 mm (3.3 in)
199367.3 mm (2.6 in)
199450.3 mm (2.0 in)
199574.9 mm (2.9 in)
199694.0 mm (3.7 in)
199763.5 mm (2.5 in)
199886.9 mm (3.4 in)
1999113.0 mm (4.4 in)
200074.9 mm (2.9 in)
2001115.3 mm (4.5 in)
200259.2 mm (2.3 in)
200371.1 mm (2.8 in)
200492.2 mm (3.6 in)
2005109.2 mm (4.3 in)
200668.6 mm (2.7 in)
200735.6 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mansfield Hollow Lake by year The wettest five days of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 213.8 mm (8.4 in) in 1982, marked on the chart; the median year is 103.0 mm (4.1 in). 5010015020025019601970198019902000Record: 213.8 mm (8.4 in) in 1982
The wettest five days of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 213.8 mm (8.4 in) in 1982, marked on the chart; the median year is 103.0 mm (4.1 in).
Wettest five days (Rx5day) at Mansfield Hollow Lake by year
YearWettest five days (Rx5day)
195297.9 mm (3.9 in)
195398.3 mm (3.9 in)
1954122.4 mm (4.8 in)
1955183.9 mm (7.2 in)
195663.8 mm (2.5 in)
195770.5 mm (2.8 in)
195878.8 mm (3.1 in)
1959104.2 mm (4.1 in)
1960120.9 mm (4.8 in)
196172.9 mm (2.9 in)
196258.4 mm (2.3 in)
196355.9 mm (2.2 in)
196477.2 mm (3.0 in)
1965138.5 mm (5.5 in)
196672.9 mm (2.9 in)
196778.8 mm (3.1 in)
196879.6 mm (3.1 in)
1969128.5 mm (5.1 in)
1970103.2 mm (4.1 in)
1971106.9 mm (4.2 in)
197283.3 mm (3.3 in)
197389.7 mm (3.5 in)
197488.9 mm (3.5 in)
1975145.8 mm (5.7 in)
1976103.1 mm (4.1 in)
197798.8 mm (3.9 in)
197887.2 mm (3.4 in)
1979160.2 mm (6.3 in)
1980136.7 mm (5.4 in)
1981105.7 mm (4.2 in)
1982213.8 mm (8.4 in)
1983113.5 mm (4.5 in)
1984193.0 mm (7.6 in)
198572.4 mm (2.9 in)
198680.5 mm (3.2 in)
1987142.0 mm (5.6 in)
1988135.9 mm (5.4 in)
1989163.8 mm (6.4 in)
1990133.0 mm (5.2 in)
1991171.0 mm (6.7 in)
199289.7 mm (3.5 in)
199386.3 mm (3.4 in)
199486.9 mm (3.4 in)
199583.5 mm (3.3 in)
1996121.2 mm (4.8 in)
199782.2 mm (3.2 in)
1998147.3 mm (5.8 in)
1999138.7 mm (5.5 in)
2000101.6 mm (4.0 in)
2001116.1 mm (4.6 in)
200282.3 mm (3.2 in)
2003102.9 mm (4.1 in)
2004129.3 mm (5.1 in)
2005175.7 mm (6.9 in)
2006129.0 mm (5.1 in)
200758.5 mm (2.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mansfield Hollow Lake by year The longest dry spell of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 36 days in 1999, marked on the chart; the median year is 16 days. 1020304019601970198019902000Record: 36 days in 1999
The longest dry spell of the year at Mansfield Hollow Lake, 1952 to 2007. The record is 36 days in 1999, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Mansfield Hollow Lake by year
YearLongest dry spell (CDD)
195227 days
195322 days
195413 days
195517 days
195615 days
195716 days
195820 days
195912 days
196018 days
196121 days
196213 days
196324 days
196415 days
196516 days
196620 days
196713 days
196818 days
196916 days
197013 days
197117 days
197211 days
197314 days
197416 days
197515 days
197617 days
197715 days
197823 days
197911 days
198023 days
198118 days
198218 days
198320 days
198420 days
198519 days
198617 days
198712 days
198814 days
198915 days
199012 days
199114 days
199213 days
199312 days
199411 days
199525 days
199612 days
199718 days
199816 days
199936 days
200011 days
200129 days
200216 days
200313 days
200414 days
200515 days
200617 days
200714 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

42 years with a frost

Across 42 years with a frost, the median last spring frost at Mansfield Hollow Lake falls on 15 May and the median first autumn frost on 26 September, which leaves a median of 138 days between them.

Fitted over all years, the growing season changes by +9.2 days per decade at this station.

Frost dates and growing season at Mansfield Hollow Lake
MeasureMedian, all yearsEarliest periodRecent period (1965 to 2005)Recent against earliestFitted trend
Last spring frost15 Mayn/a13 Mayn/a-5.7 days per decade
First autumn frost26 Septembern/a29 Septembern/a+3.4 days per decade
Growing days138 daysn/a143 daysn/a+9.2 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

50 years, 1953 to 2005

A day with at least 71.0 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 152.3 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Mansfield Hollow Lake: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years71.0 mm (2.8 in)
5 years93.5 mm (3.7 in)
10 years108.1 mm (4.3 in)
25 years126.2 mm (5.0 in)
50 years139.4 mm (5.5 in)
100 years152.3 mm (6.0 in)Longer than the 50 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, 50 years of values from 1953 to 2005.

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: 140.0 mm (5.5 in) in 1991; 128.3 mm (5.1 in) in 1955; 122.9 mm (4.8 in) in 1990.

Station Changes

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

Download the Data

  • Data for Mansfield Hollow Lake standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mansfield Hollow Lake 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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