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Valkenburg Weather Records (NLE00101982)

Record envelope, standing records and threshold days for Valkenburg (NLE00101982), Netherlands, with 66 years of record.

Key Facts for Valkenburg

  • Valkenburg (NLE00101982) is a weather station in Netherlands at 52.17 latitude and 4.43 longitude, 0 m (0 ft) above sea level.
  • The station reports from 1951 to 2016, 66 years of record.
  • 1,464 records set at Valkenburg still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Valkenburg set a daily record high minimum temperature of 11.9 C (53.4 F) on 3 April 2016.

About the Station

  • Location: Netherlands, 52.17 latitude, 4.43 longitude.
  • Elevation: 0 m (0 ft).
  • Period of record: 1951 to 2016, 66 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Valkenburg, with 2026 drawn through them The band shows the record high and record low for each calendar day at Valkenburg. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Valkenburg. 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 Valkenburg, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.3 C (57.7 F)-16.4 C (2.5 F)n/an/a
Feb17.1 C (62.8 F)-17.5 C (0.5 F)n/an/a
Mar23.0 C (73.4 F)-15.0 C (5.0 F)n/an/a
Apr27.7 C (81.9 F)-4.4 C (24.1 F)n/an/a
May30.4 C (86.7 F)-1.5 C (29.3 F)n/an/a
Jun33.5 C (92.3 F)1.7 C (35.1 F)n/an/a
Jul33.7 C (92.7 F)4.4 C (39.9 F)n/an/a
Aug34.6 C (94.3 F)5.4 C (41.7 F)n/an/a
Sep30.8 C (87.4 F)0.5 C (32.9 F)n/an/a
Oct26.4 C (79.5 F)-4.4 C (24.1 F)n/an/a
Nov18.6 C (65.5 F)-8.3 C (17.1 F)n/an/a
Dec15.4 C (59.7 F)-13.2 C (8.2 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Valkenburg by the year they were set 1,464 records at Valkenburg still stand. 1963 holds the most, with 43. 02040601951: 131952: 191953: 161954: 111955: 161956: 381957: 251958: 211959: 171960: 151961: 291962: 361963: 431964: 211965: 291966: 151967: 91968: 241969: 201970: 131971: 241972: 161973: 91974: 151975: 191976: 211977: 171978: 211979: 331980: 231981: 201982: 91983: 161984: 101985: 351986: 311987: 271988: 91989: 251990: 341991: 241992: 161993: 321994: 201995: 211996: 181997: 261998: 301999: 102000: 272001: 272002: 302003: 172004: 212005: 352006: 382007: 212008: 152009: 152010: 262011: 252012: 212013: 272014: 352015: 372016: 61951195819651972197919861993200020072014
1,464 records at Valkenburg still stand. 1963 holds the most, with 43.
Standing records at Valkenburg by the year they were set
Year setStanding records
195113
195219
195316
195411
195516
195638
195725
195821
195917
196015
196129
196236
196343
196421
196529
196615
19679
196824
196920
197013
197124
197216
19739
197415
197519
197621
197717
197821
197933
198023
198120
19829
198316
198410
198535
198631
198727
19889
198925
199034
199124
199216
199332
199420
199521
199618
199726
199830
199910
200027
200127
200230
200317
200421
200535
200638
200721
200815
200915
201026
201125
201221
201327
201435
201537
20166

All-Time Record Progression

3 new records
When Valkenburg set new all-time records 3 all-time records were set at Valkenburg between 14 January 1987 and 9 August 2004. Each dot is a new record. Record low maximum temperatureRecord high maximum temperatureRecord high minimum temperature14 January 1987: Record low maximum temperature -9.6 C (14.7 F)4 August 1990: Record high maximum temperature 34.6 C (94.3 F)9 August 2004: Record high minimum temperature 21.1 C (70.0 F)1990199520002005
3 all-time records were set at Valkenburg between 14 January 1987 and 9 August 2004. Each dot is a new record.
When Valkenburg set new all-time records
DateKindDetail
1987-01-14Record low maximum temperatureRecord low maximum temperature -9.6 C (14.7 F)
1990-08-04Record high maximum temperatureRecord high maximum temperature 34.6 C (94.3 F)
2004-08-09Record high minimum temperatureRecord high minimum temperature 21.1 C (70.0 F)

Period of Record Coverage

1951 to 2016
Days with data per year at Valkenburg 66 years of record at Valkenburg, 1951 to 2016. 1 years have data for under 90 percent of days and are left out of rankings: 2016. 1951: 364 of 365 days1952: 352 of 366 days1953: 363 of 365 days1954: 357 of 365 days1955: 346 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: 365 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 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 123 of 366 days196019701980199020002010
66 years of record at Valkenburg, 1951 to 2016. 1 years have data for under 90 percent of days and are left out of rankings: 2016.
Days with data per year at Valkenburg
YearDays with dataShare of yearComplete
1951364100%Yes
195235296%Yes
195336399%Yes
195435798%Yes
195534695%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964365100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
201612334%No

Latest Records

20
Latest records at Valkenburg
DateStationRecordValueBeat old record byOld record stoodSignificance
3 April 2016Valkenburg, NLdaily high min11.9 C (53.4 F)1.2 C (2.2 F)14 years13 of 100 (Routine)
21 February 2016Valkenburg, NLdaily high min8.5 C (47.3 F)0.9 C (1.6 F)17 years13 of 100 (Routine)
1 February 2016Valkenburg, NLdaily high min9.7 C (49.5 F)1.7 C (3.1 F)13 years13 of 100 (Routine)
27 January 2016Valkenburg, NLdaily high min8.3 C (46.9 F)0.5 C (0.9 F)32 years16 of 100 (Routine)
25 January 2016Valkenburg, NLdaily high min8.4 C (47.1 F)1.9 C (3.4 F)46 years24 of 100 (Routine)
25 January 2016Valkenburg, NLmonthly high max14.3 C (57.7 F)0.5 C (0.9 F)23 years23 of 100 (Routine)
27 December 2015Valkenburg, NLdaily high min10.5 C (50.9 F)1.5 C (2.7 F)12 years12 of 100 (Routine)
27 December 2015Valkenburg, NLdaily high max13.3 C (55.9 F)0.8 C (1.4 F)12 years11 of 100 (Routine)
26 December 2015Valkenburg, NLdaily high max14.7 C (58.5 F)2.0 C (3.6 F)40 years23 of 100 (Routine)
26 December 2015Valkenburg, NLdaily high min12.0 C (53.6 F)1.9 C (3.4 F)4 years11 of 100 (Routine)
25 December 2015Valkenburg, NLdaily high max14.3 C (57.7 F)2.0 C (3.6 F)40 years23 of 100 (Routine)
22 December 2015Valkenburg, NLdaily high max14.1 C (57.4 F)2.2 C (4.0 F)0 years11 of 100 (Routine)
22 December 2015Valkenburg, NLdaily high min10.5 C (50.9 F)0.2 C (0.4 F)0 years6 of 100 (Routine)
20 December 2015Valkenburg, NLdaily high min10.6 C (51.1 F)2.2 C (4.0 F)28 years18 of 100 (Routine)
19 December 2015Valkenburg, NLdaily high min10.8 C (51.4 F)3.0 C (5.4 F)28 years20 of 100 (Routine)
19 December 2015Valkenburg, NLdaily high max13.9 C (57.0 F)0.8 C (1.4 F)21 years14 of 100 (Routine)
18 December 2015Valkenburg, NLdaily high min10.4 C (50.7 F)0.2 C (0.4 F)0 years6 of 100 (Routine)
17 December 2015Valkenburg, NLdaily high max14.9 C (58.8 F)1.8 C (3.2 F)28 years18 of 100 (Routine)
17 December 2015Valkenburg, NLdaily high min12.1 C (53.8 F)2.6 C (4.7 F)25 years18 of 100 (Routine)
7 December 2015Valkenburg, NLdaily high min9.0 C (48.2 F)0.4 C (0.7 F)36 years16 of 100 (Routine)

Climate Trend

65 complete years, 1951 to 2015
Annual mean temperature at Valkenburg as warming stripes, 1951 to 2015 One stripe for each of 65 complete years at Valkenburg, 1951 to 2015. Blue stripes are years cooler than the station's own mean of 9.7 C (49.5 F); red stripes are warmer. The coolest year was 1963, at 7.3 C (45.1 F), and the warmest was 2014, at 11.6 C (52.9 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1951: 9.4 C, -0.3 C from the station mean1952: 9.1 C, -0.6 C from the station mean1953: 9.9 C, +0.2 C from the station mean1954: 9.3 C, -0.4 C from the station mean1955: 9.0 C, -0.7 C from the station mean1956: 8.4 C, -1.3 C from the station mean1957: 10.2 C, +0.5 C from the station mean1958: 9.6 C, -0.1 C from the station mean1959: 10.3 C, +0.6 C from the station mean1960: 9.9 C, +0.2 C from the station mean1961: 9.8 C, +0.1 C from the station mean1962: 8.2 C, -1.6 C from the station mean1963: 7.3 C, -2.4 C from the station mean1964: 8.8 C, -0.9 C from the station mean1965: 8.3 C, -1.5 C from the station mean1966: 9.2 C, -0.5 C from the station mean1967: 9.8 C, +0.1 C from the station mean1968: 8.8 C, -0.9 C from the station mean1969: 8.9 C, -0.8 C from the station mean1970: 9.1 C, -0.6 C from the station mean1971: 9.4 C, -0.3 C from the station mean1972: 8.9 C, -0.8 C from the station mean1973: 9.4 C, -0.3 C from the station mean1974: 9.6 C, -0.1 C from the station mean1975: 9.6 C, -0.1 C from the station mean1976: 9.7 C, -0.1 C from the station mean1977: 9.7 C, 0.0 C from the station mean1978: 9.1 C, -0.6 C from the station mean1979: 8.6 C, -1.1 C from the station mean1980: 9.4 C, -0.3 C from the station mean1981: 9.3 C, -0.4 C from the station mean1982: 9.9 C, +0.2 C from the station mean1983: 9.9 C, +0.1 C from the station mean1984: 9.4 C, -0.3 C from the station mean1985: 8.3 C, -1.4 C from the station mean1986: 8.8 C, -0.9 C from the station mean1987: 8.8 C, -0.9 C from the station mean1988: 10.4 C, +0.7 C from the station mean1989: 10.7 C, +1.0 C from the station mean1990: 10.7 C, +1.0 C from the station mean1991: 9.5 C, -0.2 C from the station mean1992: 10.6 C, +0.9 C from the station mean1993: 9.7 C, -0.1 C from the station mean1994: 10.6 C, +0.9 C from the station mean1995: 10.4 C, +0.7 C from the station mean1996: 8.4 C, -1.3 C from the station mean1997: 10.0 C, +0.3 C from the station mean1998: 10.4 C, +0.7 C from the station mean1999: 10.9 C, +1.2 C from the station mean2000: 10.9 C, +1.2 C from the station mean2001: 10.5 C, +0.8 C from the station mean2002: 10.8 C, +1.1 C from the station mean2003: 10.4 C, +0.6 C from the station mean2004: 10.3 C, +0.5 C from the station mean2005: 10.6 C, +0.8 C from the station mean2006: 11.0 C, +1.2 C from the station mean2007: 11.1 C, +1.4 C from the station mean2008: 10.4 C, +0.7 C from the station mean2009: 10.3 C, +0.6 C from the station mean2010: 8.8 C, -0.9 C from the station mean2011: 10.9 C, +1.2 C from the station mean2012: 10.2 C, +0.5 C from the station mean2013: 9.7 C, 0.0 C from the station mean2014: 11.6 C, +1.9 C from the station mean2015: 10.7 C, +1.0 C from the station mean1951196019701980199020002010
One stripe for each of 65 complete years at Valkenburg, 1951 to 2015. Blue stripes are years cooler than the station's own mean of 9.7 C (49.5 F); red stripes are warmer. The coolest year was 1963, at 7.3 C (45.1 F), and the warmest was 2014, at 11.6 C (52.9 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Valkenburg as warming stripes, 1951 to 2015
YearAnnual mean temperatureDifference from the station mean
19519.4 C-0.35 C
19529.1 C-0.58 C
19539.9 C+0.21 C
19549.3 C-0.42 C
19559.0 C-0.68 C
19568.4 C-1.33 C
195710.2 C+0.52 C
19589.6 C-0.10 C
195910.3 C+0.61 C
19609.9 C+0.21 C
19619.8 C+0.11 C
19628.2 C-1.56 C
19637.3 C-2.42 C
19648.8 C-0.91 C
19658.3 C-1.46 C
19669.2 C-0.53 C
19679.8 C+0.11 C
19688.8 C-0.94 C
19698.9 C-0.79 C
19709.1 C-0.60 C
19719.4 C-0.33 C
19728.9 C-0.79 C
19739.4 C-0.28 C
19749.6 C-0.10 C
19759.6 C-0.12 C
19769.7 C-0.06 C
19779.7 C-0.04 C
19789.1 C-0.58 C
19798.6 C-1.12 C
19809.4 C-0.35 C
19819.3 C-0.45 C
19829.9 C+0.15 C
19839.9 C+0.14 C
19849.4 C-0.31 C
19858.3 C-1.38 C
19868.8 C-0.91 C
19878.8 C-0.91 C
198810.4 C+0.68 C
198910.7 C+0.95 C
199010.7 C+0.98 C
19919.5 C-0.24 C
199210.6 C+0.89 C
19939.7 C-0.06 C
199410.6 C+0.89 C
199510.4 C+0.66 C
19968.4 C-1.30 C
199710.0 C+0.30 C
199810.4 C+0.70 C
199910.9 C+1.21 C
200010.9 C+1.18 C
200110.5 C+0.76 C
200210.8 C+1.12 C
200310.4 C+0.64 C
200410.3 C+0.54 C
200510.6 C+0.84 C
200611.0 C+1.24 C
200711.1 C+1.39 C
200810.4 C+0.71 C
200910.3 C+0.62 C
20108.8 C-0.90 C
201110.9 C+1.17 C
201210.2 C+0.50 C
20139.7 C-0.05 C
201411.6 C+1.89 C
201510.7 C+0.96 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1951 to 2015. In Fahrenheit: 0.5 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Valkenburg
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.6) per decade1951 to 201565Rise
Mean daily maximum0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.6) per decade1951 to 201565Rise
Mean daily minimum0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.7) per decade1951 to 201565Rise

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

1951 to 2016
Yearly extremes at Valkenburg: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.6 C (94.3 F)199030.7 C (87.3 F)66
Coldest night (TNn)-17.5 C (0.5 F)1956-9.2 C (15.4 F)66

Hottest day (TXx)

Hottest day (TXx) at Valkenburg by year The hottest day of the year at Valkenburg, 1951 to 2016. The record is 34.6 C (94.3 F) in 1990, marked on the chart; the median year is 30.7 C (87.3 F). 1520253035196019802000Record: 34.6 C (94.3 F) in 1990
The hottest day of the year at Valkenburg, 1951 to 2016. The record is 34.6 C (94.3 F) in 1990, marked on the chart; the median year is 30.7 C (87.3 F).
Hottest day (TXx) at Valkenburg by year
YearHottest day (TXx)
195129.4 C (84.9 F)
195231.7 C (89.1 F)
195331.8 C (89.2 F)
195429.3 C (84.7 F)
195529.5 C (85.1 F)
195628.2 C (82.8 F)
195732.9 C (91.2 F)
195828.0 C (82.4 F)
195932.7 C (90.9 F)
196028.8 C (83.8 F)
196131.5 C (88.7 F)
196226.8 C (80.2 F)
196325.3 C (77.5 F)
196430.7 C (87.3 F)
196526.3 C (79.3 F)
196630.3 C (86.5 F)
196729.8 C (85.6 F)
196830.3 C (86.5 F)
196930.5 C (86.9 F)
197029.8 C (85.6 F)
197128.1 C (82.6 F)
197229.2 C (84.6 F)
197330.8 C (87.4 F)
197426.4 C (79.5 F)
197532.4 C (90.3 F)
197632.4 C (90.3 F)
197730.8 C (87.4 F)
197831.4 C (88.5 F)
197928.3 C (82.9 F)
198028.9 C (84.0 F)
198128.3 C (82.9 F)
198230.7 C (87.3 F)
198331.7 C (89.1 F)
198430.4 C (86.7 F)
198528.5 C (83.3 F)
198629.7 C (85.5 F)
198729.6 C (85.3 F)
198827.6 C (81.7 F)
198931.8 C (89.2 F)
199034.6 C (94.3 F)
199131.8 C (89.2 F)
199229.7 C (85.5 F)
199329.3 C (84.7 F)
199433.3 C (91.9 F)
199531.2 C (88.2 F)
199633.5 C (92.3 F)
199731.3 C (88.3 F)
199829.7 C (85.5 F)
199931.4 C (88.5 F)
200032.1 C (89.8 F)
200130.7 C (87.3 F)
200230.4 C (86.7 F)
200333.5 C (92.3 F)
200430.8 C (87.4 F)
200532.4 C (90.3 F)
200633.7 C (92.7 F)
200727.8 C (82.0 F)
200829.1 C (84.4 F)
200931.9 C (89.4 F)
201033.4 C (92.1 F)
201131.1 C (88.0 F)
201231.5 C (88.7 F)
201331.0 C (87.8 F)
201433.5 C (92.3 F)
201532.9 C (91.2 F)
201618.4 C (65.1 F)

Coldest night (TNn)

Coldest night (TNn) at Valkenburg by year The coldest night of the year at Valkenburg, 1951 to 2016. The record is -17.5 C (0.5 F) in 1956, marked on the chart; the median year is -9.2 C (15.4 F). -20-15-10-50196019802000Record: -17.5 C (0.5 F) in 1956
The coldest night of the year at Valkenburg, 1951 to 2016. The record is -17.5 C (0.5 F) in 1956, marked on the chart; the median year is -9.2 C (15.4 F).
Coldest night (TNn) at Valkenburg by year
YearColdest night (TNn)
1951-5.7 C (21.7 F)
1952-7.1 C (19.2 F)
1953-6.1 C (21.0 F)
1954-12.4 C (9.7 F)
1955-7.6 C (18.3 F)
1956-17.5 C (0.5 F)
1957-8.0 C (17.6 F)
1958-11.1 C (12.0 F)
1959-5.8 C (21.6 F)
1960-9.0 C (15.8 F)
1961-11.3 C (11.7 F)
1962-11.8 C (10.8 F)
1963-15.8 C (3.6 F)
1964-9.7 C (14.5 F)
1965-10.1 C (13.8 F)
1966-11.5 C (11.3 F)
1967-9.1 C (15.6 F)
1968-12.9 C (8.8 F)
1969-13.0 C (8.6 F)
1970-11.2 C (11.8 F)
1971-13.7 C (7.3 F)
1972-10.9 C (12.4 F)
1973-9.9 C (14.2 F)
1974-4.2 C (24.4 F)
1975-6.5 C (20.3 F)
1976-9.7 C (14.5 F)
1977-4.6 C (23.7 F)
1978-10.6 C (12.9 F)
1979-16.4 C (2.5 F)
1980-8.9 C (16.0 F)
1981-10.2 C (13.6 F)
1982-10.9 C (12.4 F)
1983-6.3 C (20.7 F)
1984-6.4 C (20.5 F)
1985-15.0 C (5.0 F)
1986-14.0 C (6.8 F)
1987-14.4 C (6.1 F)
1988-4.9 C (23.2 F)
1989-6.0 C (21.2 F)
1990-3.4 C (25.9 F)
1991-11.4 C (11.5 F)
1992-7.8 C (18.0 F)
1993-8.6 C (16.5 F)
1994-8.8 C (16.2 F)
1995-9.9 C (14.2 F)
1996-10.5 C (13.1 F)
1997-13.8 C (7.2 F)
1998-9.5 C (14.9 F)
1999-7.3 C (18.9 F)
2000-5.6 C (21.9 F)
2001-7.8 C (18.0 F)
2002-7.9 C (17.8 F)
2003-9.1 C (15.6 F)
2004-9.4 C (15.1 F)
2005-15.0 C (5.0 F)
2006-6.2 C (20.8 F)
2007-7.0 C (19.4 F)
2008-8.6 C (16.5 F)
2009-8.2 C (17.2 F)
2010-13.2 C (8.2 F)
2011-5.7 C (21.7 F)
2012-17.5 C (0.5 F)
2013-13.5 C (7.7 F)
2014-3.1 C (26.4 F)
2015-5.1 C (22.8 F)
2016-4.8 C (23.4 F)

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

65 years with a frost

Across 65 years with a frost, the median last spring frost at Valkenburg falls on 18 April and the median first autumn frost on 11 November, which leaves a median of 204 days between them.

In 1986 to 2015 the median growing season was 211 days. That is 10 days more than in 1951 to 1980.

Fitted over all years, the growing season changes by +4.0 days per decade at this station.

Frost dates and growing season at Valkenburg
MeasureMedian, all yearsEarliest period (1951 to 1980)Recent period (1986 to 2015)Recent against earliestFitted trend
Last spring frost18 April23 April15 April8 days earlier-1.3 days per decade
First autumn frost11 November7 November15 November8 days later+2.8 days per decade
Growing days204 days201 days211 days10 days more+4.0 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.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Valkenburg, at 1962 and 1970. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1962 ran 0.4 C (0.8 F) lower than in the years before (possible change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1970 ran 0.2 C (0.4 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Valkenburg, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1962-0.4-0.8possible5
1970+0.2+0.4likely5

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