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Built 2026-10-17 (17 October 2026)

Volta Ph Weather Records (USC00049390)

Record envelope, standing records and threshold days for Volta Ph (USC00049390), California, United States, with 101 years of record.

Key Facts for Volta Ph

  • Volta Ph (USC00049390) is a weather station in California, United States at 40.46 latitude and -121.87 longitude, 677 m (2,220 ft) above sea level.
  • The station reports from 1926 to 2026, 101 years of record.
  • 1,464 records set at Volta Ph still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Volta Ph set a daily record precipitation of 29.6 mm (1.2 in) on 4 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: California, United States, 40.46 latitude, -121.87 longitude.
  • Elevation: 677 m (2,220 ft).
  • Period of record: 1926 to 2026, 101 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 Volta Ph, with 2026 drawn through them The band shows the record high and record low for each calendar day at Volta Ph. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Volta Ph. 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 Volta Ph, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan24.4 C (75.9 F)-10.0 C (14.0 F)n/an/a
Feb26.1 C (79.0 F)-10.6 C (12.9 F)n/an/a
Mar29.4 C (84.9 F)-7.2 C (19.0 F)n/an/a
Apr33.3 C (91.9 F)-3.9 C (25.0 F)n/an/a
May37.2 C (99.0 F)-1.1 C (30.0 F)n/an/a
Jun40.6 C (105.1 F)1.7 C (35.1 F)n/an/a
Jul43.3 C (109.9 F)6.7 C (44.1 F)n/an/a
Aug45.0 C (113.0 F)3.3 C (37.9 F)n/an/a
Sep42.2 C (108.0 F)0.6 C (33.1 F)n/an/a
Oct36.7 C (98.1 F)-7.2 C (19.0 F)n/an/a
Nov31.7 C (89.1 F)-3.9 C (25.0 F)n/an/a
Dec25.0 C (77.0 F)-13.3 C (8.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Volta Ph by the year they were set 1,464 records at Volta Ph still stand. 1950 holds the most, with 78. 0204060801944: 411945: 471946: 421947: 621948: 631949: 581950: 781951: 371952: 621953: 491954: 471955: 661956: 431957: 431958: 481959: 511960: 431961: 451962: 401963: 341964: 401965: 351966: 431967: 661968: 431969: 171970: 261971: 661972: 621973: 321974: 3519441948195219561960196419681972
1,464 records at Volta Ph still stand. 1950 holds the most, with 78.
Standing records at Volta Ph by the year they were set
Year setStanding records
194441
194547
194642
194762
194863
194958
195078
195137
195262
195349
195447
195566
195643
195743
195848
195951
196043
196145
196240
196334
196440
196535
196643
196766
196843
196917
197026
197166
197262
197332
197435

All-Time Record Progression

3 new records
When Volta Ph set new all-time records 3 all-time records were set at Volta Ph between 10 February 2014 and 31 December 2022. Each dot is a new record. Record daily precipitation10 February 2014: Record daily precipitation 105.4 mm (4.1 in)14 February 2019: Record daily precipitation 115.1 mm (4.5 in)31 December 2022: Record daily precipitation 129.5 mm (5.1 in)20152020
3 all-time records were set at Volta Ph between 10 February 2014 and 31 December 2022. Each dot is a new record.
When Volta Ph set new all-time records
DateKindDetail
2014-02-10Record daily precipitationRecord daily precipitation 105.4 mm (4.1 in)
2019-02-14Record daily precipitationRecord daily precipitation 115.1 mm (4.5 in)
2022-12-31Record daily precipitationRecord daily precipitation 129.5 mm (5.1 in)

Wettest Day of Each Month

Dec: 129.5 mm (5.1 in)
Record daily precipitation for each month at Volta Ph The wettest day on record for each calendar month at Volta Ph. The most was 129.5 mm (5.1 in) on 31 December 2022. 050100150 Jan: 99.3 mm (3.9 in), 13 January 2003 Jan Feb: 115.1 mm (4.5 in), 14 February 2019 Feb Mar: 79.2 mm (3.1 in), 19 March 2020 Mar Apr: 81.0 mm (3.2 in), 29 April 1995 Apr May: 82.3 mm (3.2 in), 19 May 1953 May Jun: 54.4 mm (2.1 in), 12 June 1958 Jun Jul: 29.5 mm (1.2 in), 8 July 1974 Jul Aug: 57.4 mm (2.3 in), 15 August 1976 Aug Sep: 76.5 mm (3.0 in), 27 September 1957 Sep Oct: 90.4 mm (3.6 in), 25 October 2010 Oct Nov: 90.4 mm (3.6 in), 9 November 1964 Nov Dec: 129.5 mm (5.1 in), 31 December 2022 Dec
The wettest day on record for each calendar month at Volta Ph. The most was 129.5 mm (5.1 in) on 31 December 2022.
Record daily precipitation for each month at Volta Ph
MonthRecord daily precipitation (mm)Date
Jan99.3 mm (3.9 in)13 January 2003
Feb115.1 mm (4.5 in)14 February 2019
Mar79.2 mm (3.1 in)19 March 2020
Apr81.0 mm (3.2 in)29 April 1995
May82.3 mm (3.2 in)19 May 1953
Jun54.4 mm (2.1 in)12 June 1958
Jul29.5 mm (1.2 in)8 July 1974
Aug57.4 mm (2.3 in)15 August 1976
Sep76.5 mm (3.0 in)27 September 1957
Oct90.4 mm (3.6 in)25 October 2010
Nov90.4 mm (3.6 in)9 November 1964
Dec129.5 mm (5.1 in)31 December 2022

Period of Record Coverage

1944 to 1974
Days with data per year at Volta Ph 31 years of record at Volta Ph, 1944 to 1974. 2 years have data for under 90 percent of days and are left out of rankings: 1944, 1974. 1944: 214 of 366 days1945: 365 of 365 days1946: 365 of 365 days1947: 365 of 365 days1948: 366 of 366 days1949: 364 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 364 of 365 days1955: 364 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 359 of 365 days1960: 364 of 366 days1961: 364 of 365 days1962: 365 of 365 days1963: 361 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 364 of 365 days1967: 362 of 365 days1968: 365 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 361 of 365 days1974: 288 of 365 days194519501955196019651970
31 years of record at Volta Ph, 1944 to 1974. 2 years have data for under 90 percent of days and are left out of rankings: 1944, 1974.
Days with data per year at Volta Ph
YearDays with dataShare of yearComplete
194421458%No
1945365100%Yes
1946365100%Yes
1947365100%Yes
1948366100%Yes
1949364100%Yes
1950365100%Yes
1951365100%Yes
1952366100%Yes
1953365100%Yes
1954364100%Yes
1955364100%Yes
1956365100%Yes
1957365100%Yes
1958364100%Yes
195935998%Yes
196036499%Yes
1961364100%Yes
1962365100%Yes
196336199%Yes
1964365100%Yes
1965365100%Yes
1966364100%Yes
196736299%Yes
1968365100%Yes
1969364100%Yes
1970364100%Yes
1971364100%Yes
1972365100%Yes
197336199%Yes
197428879%No

Latest Records

20
Latest records at Volta Ph
DateStationRecordValueBeat old record byOld record stoodSignificance
4 September 2026Volta Ph, USdaily rain (Provisional)29.6 mm (1.2 in)29.6 mm (1.2 in)99 years65 of 100 (Major)
3 September 2026Volta Ph, USdaily rain (Provisional)8.2 mm (0.32 in)2.1 mm (0.08 in)89 years20 of 100 (Routine)
22 December 2025Volta Ph, USdaily rain63.5 mm (2.5 in)4.3 mm (0.17 in)3 years12 of 100 (Routine)
27 October 2025Volta Ph, USdaily rain59.7 mm (2.4 in)41.7 mm (1.6 in)11 years43 of 100 (Notable)
1 October 2025Volta Ph, USdaily rain14.0 mm (0.6 in)0.5 mm (0.02 in)88 years20 of 100 (Routine)
4 April 2025Volta Ph, USdaily rain74.4 mm (2.9 in)9.6 mm (0.38 in)0 years19 of 100 (Routine)
2 February 2025Volta Ph, USdaily rain64.3 mm (2.5 in)19.1 mm (0.8 in)34 years35 of 100 (Notable)
6 January 2025Volta Ph, USdaily rain59.7 mm (2.4 in)25.7 mm (1.0 in)98 years58 of 100 (Notable)
27 December 2024Volta Ph, USdaily rain96.3 mm (3.8 in)48.3 mm (1.9 in)73 years62 of 100 (Major)
17 December 2024Volta Ph, USdaily rain95.5 mm (3.8 in)24.4 mm (1.0 in)6 years26 of 100 (Routine)
12 November 2024Volta Ph, USdaily rain46.7 mm (1.8 in)4.5 mm (0.18 in)96 years40 of 100 (Notable)
26 August 2024Volta Ph, USdaily rain11.4 mm (0.4 in)5.0 mm (0.20 in)70 years20 of 100 (Routine)
7 May 2024Volta Ph, USdaily rain67.3 mm (2.6 in)29.5 mm (1.2 in)72 years59 of 100 (Notable)
16 April 2024Volta Ph, USdaily rain50.8 mm (2.0 in)17.0 mm (0.7 in)89 years51 of 100 (Notable)
4 April 2024Volta Ph, USdaily rain64.8 mm (2.6 in)15.5 mm (0.6 in)83 years48 of 100 (Notable)
27 March 2024Volta Ph, USdaily rain39.9 mm (1.6 in)8.7 mm (0.34 in)59 years34 of 100 (Routine)
21 February 2024Volta Ph, USdaily rain95.8 mm (3.8 in)63.0 mm (2.5 in)28 years57 of 100 (Notable)
25 January 2024Volta Ph, USdaily rain71.1 mm (2.8 in)11.4 mm (0.4 in)26 years25 of 100 (Routine)
29 December 2023Volta Ph, USdaily rain75.4 mm (3.0 in)16.2 mm (0.6 in)89 years45 of 100 (Notable)
7 November 2023Volta Ph, USdaily rain64.8 mm (2.6 in)14.5 mm (0.6 in)49 years34 of 100 (Routine)

Climate Trend

29 complete years, 1945 to 1973
Annual mean temperature at Volta Ph as warming stripes, 1945 to 1973 One stripe for each of 29 complete years at Volta Ph, 1945 to 1973. Blue stripes are years cooler than the station's own mean of 15.0 C (59.0 F); red stripes are warmer. The coolest year was 1971, at 13.9 C (57.0 F), and the warmest was 1959, at 16.2 C (61.1 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1945: 15.3 C, +0.3 C from the station mean1946: 14.9 C, -0.1 C from the station mean1947: 15.6 C, +0.6 C from the station mean1948: 14.0 C, -1.0 C from the station mean1949: 14.9 C, -0.1 C from the station mean1950: 15.4 C, +0.4 C from the station mean1951: 15.3 C, +0.3 C from the station mean1952: 15.1 C, +0.1 C from the station mean1953: 15.1 C, +0.1 C from the station mean1954: 15.2 C, +0.2 C from the station mean1955: 14.6 C, -0.4 C from the station mean1956: 15.0 C, 0.0 C from the station mean1957: 14.6 C, -0.4 C from the station mean1958: 16.0 C, +1.0 C from the station mean1959: 16.2 C, +1.2 C from the station mean1960: 15.2 C, +0.2 C from the station mean1961: 15.2 C, +0.2 C from the station mean1962: 15.0 C, 0.0 C from the station mean1963: 14.5 C, -0.5 C from the station mean1964: 14.5 C, -0.5 C from the station mean1965: 14.6 C, -0.4 C from the station mean1966: 15.4 C, +0.4 C from the station mean1967: 15.0 C, 0.0 C from the station mean1968: 15.0 C, 0.0 C from the station mean1969: 15.0 C, 0.0 C from the station mean1970: 15.1 C, +0.1 C from the station mean1971: 13.9 C, -1.1 C from the station mean1972: 14.7 C, -0.3 C from the station mean1973: 14.8 C, -0.2 C from the station mean194519501955196019651970
One stripe for each of 29 complete years at Volta Ph, 1945 to 1973. Blue stripes are years cooler than the station's own mean of 15.0 C (59.0 F); red stripes are warmer. The coolest year was 1971, at 13.9 C (57.0 F), and the warmest was 1959, at 16.2 C (61.1 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Volta Ph as warming stripes, 1945 to 1973
YearAnnual mean temperatureDifference from the station mean
194515.3 C+0.31 C
194614.9 C-0.13 C
194715.6 C+0.57 C
194814.0 C-1.02 C
194914.9 C-0.07 C
195015.4 C+0.41 C
195115.3 C+0.31 C
195215.1 C+0.09 C
195315.1 C+0.08 C
195415.2 C+0.16 C
195514.6 C-0.44 C
195615.0 C+0.01 C
195714.6 C-0.37 C
195816.0 C+0.98 C
195916.2 C+1.17 C
196015.2 C+0.21 C
196115.2 C+0.16 C
196215.0 C-0.04 C
196314.5 C-0.54 C
196414.5 C-0.48 C
196514.6 C-0.36 C
196615.4 C+0.39 C
196715.0 C+0.04 C
196815.0 C-0.05 C
196915.0 C-0.01 C
197015.1 C+0.12 C
197113.9 C-1.12 C
197214.7 C-0.29 C
197314.8 C-0.18 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1926 to 2026
Yearly extremes at Volta Ph: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)197140.0 C (104.0 F)31
Coldest night (TNn)-13.3 C (8.1 F)1972-6.1 C (21.0 F)31
Wettest day (Rx1day)129.5 mm (5.1 in)202257.4 mm (2.3 in)100
Wettest five days (Rx5day)255.7 mm (10.1 in)1937100.8 mm (4.0 in)100
Longest dry spell (CDD)167 days200272 days100

Hottest day (TXx)

Hottest day (TXx) at Volta Ph by year The hottest day of the year at Volta Ph, 1926 to 2026. The record is 45.0 C (113.0 F) in 1971, marked on the chart; the median year is 40.0 C (104.0 F). 3537.54042.54519401960198020002020Record: 45.0 C (113.0 F) in 1971
The hottest day of the year at Volta Ph, 1926 to 2026. The record is 45.0 C (113.0 F) in 1971, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Volta Ph by year
YearHottest day (TXx)
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1943n/a
194440.6 C (105.1 F)
194542.2 C (108.0 F)
194643.3 C (109.9 F)
194737.8 C (100.0 F)
194838.9 C (102.0 F)
194939.4 C (102.9 F)
195041.1 C (106.0 F)
195138.9 C (102.0 F)
195241.7 C (107.1 F)
195339.4 C (102.9 F)
195438.9 C (102.0 F)
195541.1 C (106.0 F)
195640.6 C (105.1 F)
195740.0 C (104.0 F)
195839.4 C (102.9 F)
195941.7 C (107.1 F)
196041.7 C (107.1 F)
196140.6 C (105.1 F)
196238.9 C (102.0 F)
196336.7 C (98.1 F)
196440.6 C (105.1 F)
196537.2 C (99.0 F)
196639.4 C (102.9 F)
196740.0 C (104.0 F)
196838.9 C (102.0 F)
196939.4 C (102.9 F)
197039.4 C (102.9 F)
197145.0 C (113.0 F)
197243.3 C (109.9 F)
197340.0 C (104.0 F)
197440.0 C (104.0 F)
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Volta Ph by year The coldest night of the year at Volta Ph, 1926 to 2026. The record is -13.3 C (8.1 F) in 1972, marked on the chart; the median year is -6.1 C (21.0 F). -15-10-5019401960198020002020Record: -13.3 C (8.1 F) in 1972
The coldest night of the year at Volta Ph, 1926 to 2026. The record is -13.3 C (8.1 F) in 1972, marked on the chart; the median year is -6.1 C (21.0 F).
Coldest night (TNn) at Volta Ph by year
YearColdest night (TNn)
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1943n/a
1944-1.1 C (30.0 F)
1945-5.0 C (23.0 F)
1946-4.4 C (24.1 F)
1947-5.0 C (23.0 F)
1948-8.3 C (17.1 F)
1949-10.0 C (14.0 F)
1950-7.8 C (18.0 F)
1951-5.6 C (21.9 F)
1952-6.1 C (21.0 F)
1953-3.9 C (25.0 F)
1954-5.0 C (23.0 F)
1955-5.0 C (23.0 F)
1956-6.7 C (19.9 F)
1957-6.1 C (21.0 F)
1958-3.9 C (25.0 F)
1959-5.0 C (23.0 F)
1960-6.1 C (21.0 F)
1961-6.7 C (19.9 F)
1962-10.6 C (12.9 F)
1963-9.4 C (15.1 F)
1964-4.4 C (24.1 F)
1965-6.1 C (21.0 F)
1966-6.7 C (19.9 F)
1967-7.8 C (18.0 F)
1968-6.1 C (21.0 F)
1969-6.7 C (19.9 F)
1970-3.9 C (25.0 F)
1971-7.2 C (19.0 F)
1972-13.3 C (8.1 F)
1973-6.7 C (19.9 F)
1974-6.1 C (21.0 F)
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Volta Ph by year The wettest day of the year at Volta Ph, 1926 to 2026. The record is 129.5 mm (5.1 in) in 2022, marked on the chart; the median year is 57.4 mm (2.3 in). 05010015019401960198020002020Record: 129.5 mm (5.1 in) in 2022
The wettest day of the year at Volta Ph, 1926 to 2026. The record is 129.5 mm (5.1 in) in 2022, marked on the chart; the median year is 57.4 mm (2.3 in).
Wettest day (Rx1day) at Volta Ph by year
YearWettest day (Rx1day)
192642.7 mm (1.7 in)
192752.8 mm (2.1 in)
192848.8 mm (1.9 in)
192944.7 mm (1.8 in)
193045.5 mm (1.8 in)
193146.7 mm (1.8 in)
193232.8 mm (1.3 in)
193359.2 mm (2.3 in)
193438.9 mm (1.5 in)
193553.3 mm (2.1 in)
193643.9 mm (1.7 in)
1937103.1 mm (4.1 in)
193841.7 mm (1.6 in)
193947.0 mm (1.9 in)
194084.6 mm (3.3 in)
194163.8 mm (2.5 in)
194354.6 mm (2.1 in)
194439.6 mm (1.6 in)
194550.8 mm (2.0 in)
194631.5 mm (1.2 in)
194743.2 mm (1.7 in)
194871.6 mm (2.8 in)
194926.7 mm (1.1 in)
195068.1 mm (2.7 in)
195153.8 mm (2.1 in)
195239.9 mm (1.6 in)
195382.3 mm (3.2 in)
195439.4 mm (1.6 in)
195557.9 mm (2.3 in)
195666.0 mm (2.6 in)
195776.5 mm (3.0 in)
195854.4 mm (2.1 in)
195959.4 mm (2.3 in)
196076.7 mm (3.0 in)
196166.0 mm (2.6 in)
196279.2 mm (3.1 in)
196368.1 mm (2.7 in)
196490.4 mm (3.6 in)
196531.2 mm (1.2 in)
196648.3 mm (1.9 in)
196758.4 mm (2.3 in)
196855.9 mm (2.2 in)
196980.3 mm (3.2 in)
197076.7 mm (3.0 in)
197163.0 mm (2.5 in)
197241.1 mm (1.6 in)
197354.6 mm (2.1 in)
197456.6 mm (2.2 in)
197571.6 mm (2.8 in)
197657.4 mm (2.3 in)
197744.7 mm (1.8 in)
197840.6 mm (1.6 in)
197963.5 mm (2.5 in)
198036.6 mm (1.4 in)
198161.7 mm (2.4 in)
198259.7 mm (2.4 in)
198357.4 mm (2.3 in)
198440.9 mm (1.6 in)
198548.3 mm (1.9 in)
198657.2 mm (2.3 in)
198741.9 mm (1.6 in)
198855.4 mm (2.2 in)
198957.4 mm (2.3 in)
199034.8 mm (1.4 in)
199151.8 mm (2.0 in)
199238.4 mm (1.5 in)
199375.7 mm (3.0 in)
199444.7 mm (1.8 in)
199581.0 mm (3.2 in)
199652.6 mm (2.1 in)
199759.7 mm (2.4 in)
199863.0 mm (2.5 in)
199937.1 mm (1.5 in)
200066.8 mm (2.6 in)
200143.7 mm (1.7 in)
200258.4 mm (2.3 in)
200399.3 mm (3.9 in)
200442.2 mm (1.7 in)
200578.2 mm (3.1 in)
200665.0 mm (2.6 in)
200761.2 mm (2.4 in)
200845.7 mm (1.8 in)
200953.3 mm (2.1 in)
201090.4 mm (3.6 in)
201163.2 mm (2.5 in)
201289.4 mm (3.5 in)
201338.9 mm (1.5 in)
2014105.4 mm (4.1 in)
201549.5 mm (1.9 in)
201666.5 mm (2.6 in)
201777.2 mm (3.0 in)
201871.1 mm (2.8 in)
2019115.1 mm (4.5 in)
202079.2 mm (3.1 in)
202162.2 mm (2.4 in)
2022129.5 mm (5.1 in)
202376.2 mm (3.0 in)
202496.3 mm (3.8 in)
202574.4 mm (2.9 in)
202629.6 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Volta Ph by year The wettest five days of the year at Volta Ph, 1926 to 2026. The record is 255.7 mm (10.1 in) in 1937, marked on the chart; the median year is 100.8 mm (4.0 in). 010020030019401960198020002020Record: 255.7 mm (10.1 in) in 1937
The wettest five days of the year at Volta Ph, 1926 to 2026. The record is 255.7 mm (10.1 in) in 1937, marked on the chart; the median year is 100.8 mm (4.0 in).
Wettest five days (Rx5day) at Volta Ph by year
YearWettest five days (Rx5day)
1926108.5 mm (4.3 in)
1927100.6 mm (4.0 in)
1928168.4 mm (6.6 in)
1929104.9 mm (4.1 in)
193086.1 mm (3.4 in)
193192.2 mm (3.6 in)
193261.8 mm (2.4 in)
193392.9 mm (3.7 in)
1934105.4 mm (4.1 in)
193595.5 mm (3.8 in)
1936119.4 mm (4.7 in)
1937255.7 mm (10.1 in)
193889.0 mm (3.5 in)
193971.5 mm (2.8 in)
1940109.5 mm (4.3 in)
1941150.4 mm (5.9 in)
1943158.0 mm (6.2 in)
194474.9 mm (2.9 in)
1945136.1 mm (5.4 in)
194695.5 mm (3.8 in)
194794.1 mm (3.7 in)
1948105.2 mm (4.1 in)
194966.6 mm (2.6 in)
1950105.4 mm (4.1 in)
1951113.8 mm (4.5 in)
1952101.8 mm (4.0 in)
1953107.7 mm (4.2 in)
195487.9 mm (3.5 in)
1955119.8 mm (4.7 in)
1956146.5 mm (5.8 in)
1957107.5 mm (4.2 in)
195899.6 mm (3.9 in)
1959103.4 mm (4.1 in)
1960101.3 mm (4.0 in)
1961100.9 mm (4.0 in)
1962148.3 mm (5.8 in)
1963124.2 mm (4.9 in)
1964131.6 mm (5.2 in)
196586.9 mm (3.4 in)
196681.0 mm (3.2 in)
196798.8 mm (3.9 in)
1968113.2 mm (4.5 in)
1969164.8 mm (6.5 in)
1970150.0 mm (5.9 in)
197178.0 mm (3.1 in)
197286.0 mm (3.4 in)
1973134.2 mm (5.3 in)
1974144.2 mm (5.7 in)
197595.2 mm (3.7 in)
1976117.7 mm (4.6 in)
197792.1 mm (3.6 in)
1978128.0 mm (5.0 in)
1979125.4 mm (4.9 in)
198096.2 mm (3.8 in)
1981120.9 mm (4.8 in)
198288.9 mm (3.5 in)
1983157.2 mm (6.2 in)
198476.2 mm (3.0 in)
1985109.0 mm (4.3 in)
1986130.8 mm (5.1 in)
198793.6 mm (3.7 in)
1988103.6 mm (4.1 in)
1989100.3 mm (3.9 in)
199068.3 mm (2.7 in)
199182.0 mm (3.2 in)
1992105.4 mm (4.1 in)
1993115.1 mm (4.5 in)
199499.0 mm (3.9 in)
1995154.7 mm (6.1 in)
1996100.3 mm (3.9 in)
1997124.9 mm (4.9 in)
1998129.0 mm (5.1 in)
199978.0 mm (3.1 in)
200093.2 mm (3.7 in)
200183.1 mm (3.3 in)
2002128.5 mm (5.1 in)
2003141.5 mm (5.6 in)
2004100.2 mm (3.9 in)
2005104.6 mm (4.1 in)
2006113.8 mm (4.5 in)
200798.8 mm (3.9 in)
200864.8 mm (2.6 in)
200972.5 mm (2.9 in)
2010103.6 mm (4.1 in)
201185.8 mm (3.4 in)
201278.2 mm (3.1 in)
201348.5 mm (1.9 in)
2014156.7 mm (6.2 in)
201594.2 mm (3.7 in)
2016152.9 mm (6.0 in)
201799.6 mm (3.9 in)
2018137.7 mm (5.4 in)
2019100.0 mm (3.9 in)
202093.9 mm (3.7 in)
202144.5 mm (1.8 in)
202247.0 mm (1.9 in)
20239.1 mm (0.36 in)
20240.0 mm (0.00 in)
20250.0 mm (0.00 in)
202639.9 mm (1.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Volta Ph by year The longest dry spell of the year at Volta Ph, 1926 to 2026. The record is 167 days in 2002, marked on the chart; the median year is 72 days. 05010015020019401960198020002020Record: 167 days in 2002
The longest dry spell of the year at Volta Ph, 1926 to 2026. The record is 167 days in 2002, marked on the chart; the median year is 72 days.
Longest dry spell (CDD) at Volta Ph by year
YearLongest dry spell (CDD)
192610 days
192783 days
1928103 days
192961 days
193097 days
193184 days
1932126 days
193364 days
193488 days
1935107 days
193655 days
193793 days
1938121 days
193966 days
1940108 days
194167 days
1943113 days
194466 days
194587 days
194660 days
194764 days
194848 days
1949111 days
195075 days
195175 days
195240 days
195381 days
195471 days
195594 days
195690 days
1957108 days
195836 days
195974 days
196056 days
196178 days
196250 days
1963103 days
196482 days
196554 days
196658 days
196746 days
196867 days
196976 days
1970110 days
197163 days
197266 days
1973111 days
197483 days
197551 days
197665 days
197764 days
197862 days
1979110 days
198071 days
1981103 days
198256 days
198348 days
198472 days
198555 days
1986128 days
198785 days
198865 days
198967 days
199053 days
199191 days
199293 days
199369 days
1994113 days
199584 days
199634 days
199750 days
1998105 days
199967 days
200057 days
200175 days
2002167 days
200354 days
200496 days
200584 days
2006111 days
200763 days
200867 days
200940 days
201052 days
201163 days
2012113 days
201385 days
201450 days
201595 days
2016103 days
201755 days
2018105 days
201977 days
202081 days
202111 days
202294 days
202342 days
202461 days
202530 days
202633 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Volta Ph falls on 14 April and the median first autumn frost on 15 November, which leaves a median of 212 days between them.

Fitted over all years, the growing season changes by -15.4 days per decade at this station.

Frost dates and growing season at Volta Ph
MeasureMedian, all yearsEarliest periodRecent period (1945 to 1973)Recent against earliestFitted trend
Last spring frost14 Apriln/a14 Apriln/a+11.6 days per decade
First autumn frost15 Novembern/a15 Novembern/a-3.8 days per decade
Growing days212 daysn/a212 daysn/a-15.4 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

84 years, 1927 to 2020

A day with at least 55.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 108.1 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Volta Ph: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years55.7 mm (2.2 in)
5 years71.2 mm (2.8 in)
10 years80.8 mm (3.2 in)
25 years92.3 mm (3.6 in)
50 years100.4 mm (4.0 in)
100 years108.1 mm (4.3 in)Longer than the 84 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, 84 years of values from 1927 to 2020.

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: 105.4 mm (4.1 in) in 2014; 103.1 mm (4.1 in) in 1937; 99.3 mm (3.9 in) in 2003.

Download the Data

  • Data for Volta Ph standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Volta Ph 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).